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Diffstat (limited to 'src/mesa/main/texstate.c')
-rw-r--r--src/mesa/main/texstate.c3238
1 files changed, 3238 insertions, 0 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
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+++ b/src/mesa/main/texstate.c
@@ -0,0 +1,3238 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5.1
+ *
+ * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file texstate.c
+ *
+ * Texture state handling.
+ */
+
+#include "glheader.h"
+#include "colormac.h"
+#include "colortab.h"
+#include "context.h"
+#include "enums.h"
+#include "macros.h"
+#include "texcompress.h"
+#include "texobj.h"
+#include "teximage.h"
+#include "texstate.h"
+#include "texenvprogram.h"
+#include "mtypes.h"
+#include "math/m_xform.h"
+#include "shaderobjects.h"
+
+
+
+#define ENUM_TO_FLOAT(X) ((GLfloat)(GLint)(X))
+#define ENUM_TO_DOUBLE(X) ((GLdouble)(GLint)(X))
+
+
+/**
+ * Default texture combine environment state. This is used to initialize
+ * a context's texture units and as the basis for converting "classic"
+ * texture environmnets to ARB_texture_env_combine style values.
+ */
+static const struct gl_tex_env_combine_state default_combine_state = {
+ GL_MODULATE, GL_MODULATE,
+ { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT },
+ { GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT },
+ { GL_SRC_COLOR, GL_SRC_COLOR, GL_SRC_ALPHA },
+ { GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA },
+ 0, 0,
+ 2, 2
+};
+
+
+/**
+ * Copy a texture binding. Helper used by _mesa_copy_texture_state().
+ */
+static void
+copy_texture_binding(const GLcontext *ctx,
+ struct gl_texture_object **dst,
+ struct gl_texture_object *src)
+{
+ /* only copy if names differ (per OpenGL SI) */
+ if ((*dst)->Name != src->Name) {
+ /* unbind/delete dest binding which we're changing */
+ (*dst)->RefCount--;
+ if ((*dst)->RefCount == 0) {
+ /* time to delete this texture object */
+ ASSERT((*dst)->Name != 0);
+ ASSERT(ctx->Driver.DeleteTexture);
+ /* XXX cast-away const, unfortunately */
+ (*ctx->Driver.DeleteTexture)((GLcontext *) ctx, *dst);
+ }
+ /* make new binding, incrementing ref count */
+ *dst = src;
+ src->RefCount++;
+ }
+}
+
+
+/**
+ * Used by glXCopyContext to copy texture state from one context to another.
+ */
+void
+_mesa_copy_texture_state( const GLcontext *src, GLcontext *dst )
+{
+ GLuint i;
+
+ ASSERT(src);
+ ASSERT(dst);
+
+ dst->Texture.CurrentUnit = src->Texture.CurrentUnit;
+ dst->Texture._GenFlags = src->Texture._GenFlags;
+ dst->Texture._TexGenEnabled = src->Texture._TexGenEnabled;
+ dst->Texture._TexMatEnabled = src->Texture._TexMatEnabled;
+ dst->Texture.SharedPalette = src->Texture.SharedPalette;
+
+ /* per-unit state */
+ for (i = 0; i < src->Const.MaxTextureUnits; i++) {
+ dst->Texture.Unit[i].Enabled = src->Texture.Unit[i].Enabled;
+ dst->Texture.Unit[i].EnvMode = src->Texture.Unit[i].EnvMode;
+ COPY_4V(dst->Texture.Unit[i].EnvColor, src->Texture.Unit[i].EnvColor);
+ dst->Texture.Unit[i].TexGenEnabled = src->Texture.Unit[i].TexGenEnabled;
+ dst->Texture.Unit[i].GenModeS = src->Texture.Unit[i].GenModeS;
+ dst->Texture.Unit[i].GenModeT = src->Texture.Unit[i].GenModeT;
+ dst->Texture.Unit[i].GenModeR = src->Texture.Unit[i].GenModeR;
+ dst->Texture.Unit[i].GenModeQ = src->Texture.Unit[i].GenModeQ;
+ dst->Texture.Unit[i]._GenBitS = src->Texture.Unit[i]._GenBitS;
+ dst->Texture.Unit[i]._GenBitT = src->Texture.Unit[i]._GenBitT;
+ dst->Texture.Unit[i]._GenBitR = src->Texture.Unit[i]._GenBitR;
+ dst->Texture.Unit[i]._GenBitQ = src->Texture.Unit[i]._GenBitQ;
+ dst->Texture.Unit[i]._GenFlags = src->Texture.Unit[i]._GenFlags;
+ COPY_4V(dst->Texture.Unit[i].ObjectPlaneS, src->Texture.Unit[i].ObjectPlaneS);
+ COPY_4V(dst->Texture.Unit[i].ObjectPlaneT, src->Texture.Unit[i].ObjectPlaneT);
+ COPY_4V(dst->Texture.Unit[i].ObjectPlaneR, src->Texture.Unit[i].ObjectPlaneR);
+ COPY_4V(dst->Texture.Unit[i].ObjectPlaneQ, src->Texture.Unit[i].ObjectPlaneQ);
+ COPY_4V(dst->Texture.Unit[i].EyePlaneS, src->Texture.Unit[i].EyePlaneS);
+ COPY_4V(dst->Texture.Unit[i].EyePlaneT, src->Texture.Unit[i].EyePlaneT);
+ COPY_4V(dst->Texture.Unit[i].EyePlaneR, src->Texture.Unit[i].EyePlaneR);
+ COPY_4V(dst->Texture.Unit[i].EyePlaneQ, src->Texture.Unit[i].EyePlaneQ);
+ dst->Texture.Unit[i].LodBias = src->Texture.Unit[i].LodBias;
+
+ /* GL_EXT_texture_env_combine */
+ dst->Texture.Unit[i].Combine.ModeRGB = src->Texture.Unit[i].Combine.ModeRGB;
+ dst->Texture.Unit[i].Combine.ModeA = src->Texture.Unit[i].Combine.ModeA;
+ COPY_3V(dst->Texture.Unit[i].Combine.SourceRGB, src->Texture.Unit[i].Combine.SourceRGB);
+ COPY_3V(dst->Texture.Unit[i].Combine.SourceA, src->Texture.Unit[i].Combine.SourceA);
+ COPY_3V(dst->Texture.Unit[i].Combine.OperandRGB, src->Texture.Unit[i].Combine.OperandRGB);
+ COPY_3V(dst->Texture.Unit[i].Combine.OperandA, src->Texture.Unit[i].Combine.OperandA);
+ dst->Texture.Unit[i].Combine.ScaleShiftRGB = src->Texture.Unit[i].Combine.ScaleShiftRGB;
+ dst->Texture.Unit[i].Combine.ScaleShiftA = src->Texture.Unit[i].Combine.ScaleShiftA;
+
+ /* copy texture object bindings, not contents of texture objects */
+ copy_texture_binding(src, &dst->Texture.Unit[i].Current1D,
+ src->Texture.Unit[i].Current1D);
+ copy_texture_binding(src, &dst->Texture.Unit[i].Current2D,
+ src->Texture.Unit[i].Current2D);
+ copy_texture_binding(src, &dst->Texture.Unit[i].Current3D,
+ src->Texture.Unit[i].Current3D);
+ copy_texture_binding(src, &dst->Texture.Unit[i].CurrentCubeMap,
+ src->Texture.Unit[i].CurrentCubeMap);
+ copy_texture_binding(src, &dst->Texture.Unit[i].CurrentRect,
+ src->Texture.Unit[i].CurrentRect);
+ }
+}
+
+
+/*
+ * For debugging
+ */
+void
+_mesa_print_texunit_state( GLcontext *ctx, GLuint unit )
+{
+ const struct gl_texture_unit *texUnit = ctx->Texture.Unit + unit;
+ _mesa_printf("Texture Unit %d\n", unit);
+ _mesa_printf(" GL_TEXTURE_ENV_MODE = %s\n", _mesa_lookup_enum_by_nr(texUnit->EnvMode));
+ _mesa_printf(" GL_COMBINE_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeRGB));
+ _mesa_printf(" GL_COMBINE_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeA));
+ _mesa_printf(" GL_SOURCE0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[0]));
+ _mesa_printf(" GL_SOURCE1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[1]));
+ _mesa_printf(" GL_SOURCE2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[2]));
+ _mesa_printf(" GL_SOURCE0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[0]));
+ _mesa_printf(" GL_SOURCE1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[1]));
+ _mesa_printf(" GL_SOURCE2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[2]));
+ _mesa_printf(" GL_OPERAND0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[0]));
+ _mesa_printf(" GL_OPERAND1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[1]));
+ _mesa_printf(" GL_OPERAND2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[2]));
+ _mesa_printf(" GL_OPERAND0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[0]));
+ _mesa_printf(" GL_OPERAND1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[1]));
+ _mesa_printf(" GL_OPERAND2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[2]));
+ _mesa_printf(" GL_RGB_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftRGB);
+ _mesa_printf(" GL_ALPHA_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftA);
+ _mesa_printf(" GL_TEXTURE_ENV_COLOR = (%f, %f, %f, %f)\n", texUnit->EnvColor[0], texUnit->EnvColor[1], texUnit->EnvColor[2], texUnit->EnvColor[3]);
+}
+
+
+
+/**********************************************************************/
+/* Texture Environment */
+/**********************************************************************/
+
+/**
+ * Convert "classic" texture environment to ARB_texture_env_combine style
+ * environments.
+ *
+ * \param state texture_env_combine state vector to be filled-in.
+ * \param mode Classic texture environment mode (i.e., \c GL_REPLACE,
+ * \c GL_BLEND, \c GL_DECAL, etc.).
+ * \param texBaseFormat Base format of the texture associated with the
+ * texture unit.
+ */
+static void
+calculate_derived_texenv( struct gl_tex_env_combine_state *state,
+ GLenum mode, GLenum texBaseFormat )
+{
+ GLenum mode_rgb;
+ GLenum mode_a;
+
+ *state = default_combine_state;
+
+ switch (texBaseFormat) {
+ case GL_ALPHA:
+ state->SourceRGB[0] = GL_PREVIOUS;
+ break;
+
+ case GL_LUMINANCE_ALPHA:
+ case GL_INTENSITY:
+ case GL_RGBA:
+ break;
+
+ case GL_LUMINANCE:
+ case GL_RGB:
+ case GL_YCBCR_MESA:
+ state->SourceA[0] = GL_PREVIOUS;
+ break;
+
+ default:
+ _mesa_problem(NULL, "Invalid texBaseFormat in calculate_derived_texenv");
+ return;
+ }
+
+ switch (mode) {
+ case GL_REPLACE:
+ case GL_MODULATE:
+ mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : mode;
+ mode_a = mode;
+ break;
+
+ case GL_DECAL:
+ mode_rgb = GL_INTERPOLATE;
+ mode_a = GL_REPLACE;
+
+ state->SourceA[0] = GL_PREVIOUS;
+
+ /* Having alpha / luminance / intensity textures replace using the
+ * incoming fragment color matches the definition in NV_texture_shader.
+ * The 1.5 spec simply marks these as "undefined".
+ */
+ switch (texBaseFormat) {
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_INTENSITY:
+ state->SourceRGB[0] = GL_PREVIOUS;
+ break;
+ case GL_RGB:
+ case GL_YCBCR_MESA:
+ mode_rgb = GL_REPLACE;
+ break;
+ case GL_RGBA:
+ state->SourceRGB[2] = GL_TEXTURE;
+ break;
+ }
+ break;
+
+ case GL_BLEND:
+ mode_rgb = GL_INTERPOLATE;
+ mode_a = GL_MODULATE;
+
+ switch (texBaseFormat) {
+ case GL_ALPHA:
+ mode_rgb = GL_REPLACE;
+ break;
+ case GL_INTENSITY:
+ mode_a = GL_INTERPOLATE;
+ state->SourceA[0] = GL_CONSTANT;
+ state->OperandA[2] = GL_SRC_ALPHA;
+ /* FALLTHROUGH */
+ case GL_LUMINANCE:
+ case GL_RGB:
+ case GL_LUMINANCE_ALPHA:
+ case GL_RGBA:
+ case GL_YCBCR_MESA:
+ state->SourceRGB[2] = GL_TEXTURE;
+ state->SourceA[2] = GL_TEXTURE;
+ state->SourceRGB[0] = GL_CONSTANT;
+ state->OperandRGB[2] = GL_SRC_COLOR;
+ break;
+ }
+ break;
+
+ case GL_ADD:
+ mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : GL_ADD;
+ mode_a = (texBaseFormat == GL_INTENSITY) ? GL_ADD : GL_MODULATE;
+ break;
+
+ default:
+ _mesa_problem(NULL,
+ "Invalid texture env mode in calculate_derived_texenv");
+ return;
+ }
+
+ state->ModeRGB = (state->SourceRGB[0] != GL_PREVIOUS)
+ ? mode_rgb : GL_REPLACE;
+ state->ModeA = (state->SourceA[0] != GL_PREVIOUS)
+ ? mode_a : GL_REPLACE;
+}
+
+
+void GLAPIENTRY
+_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
+{
+ GLuint maxUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_texture_unit *texUnit;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
+ ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+ if (ctx->Texture.CurrentUnit >= maxUnit) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+#define TE_ERROR(errCode, msg, value) \
+ _mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));
+
+ if (target == GL_TEXTURE_ENV) {
+ switch (pname) {
+ case GL_TEXTURE_ENV_MODE:
+ {
+ const GLenum mode = (GLenum) (GLint) *param;
+ if (texUnit->EnvMode == mode)
+ return;
+ if (mode == GL_MODULATE ||
+ mode == GL_BLEND ||
+ mode == GL_DECAL ||
+ mode == GL_REPLACE ||
+ (mode == GL_ADD && ctx->Extensions.EXT_texture_env_add) ||
+ (mode == GL_COMBINE &&
+ (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine))) {
+ /* legal */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->EnvMode = mode;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ }
+ break;
+ case GL_TEXTURE_ENV_COLOR:
+ {
+ GLfloat tmp[4];
+ tmp[0] = CLAMP( param[0], 0.0F, 1.0F );
+ tmp[1] = CLAMP( param[1], 0.0F, 1.0F );
+ tmp[2] = CLAMP( param[2], 0.0F, 1.0F );
+ tmp[3] = CLAMP( param[3], 0.0F, 1.0F );
+ if (TEST_EQ_4V(tmp, texUnit->EnvColor))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->EnvColor, tmp);
+ }
+ break;
+ case GL_COMBINE_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum mode = (GLenum) (GLint) *param;
+ if (texUnit->Combine.ModeRGB == mode)
+ return;
+ switch (mode) {
+ case GL_REPLACE:
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_INTERPOLATE:
+ /* OK */
+ break;
+ case GL_SUBTRACT:
+ if (!ctx->Extensions.ARB_texture_env_combine) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ case GL_DOT3_RGB_EXT:
+ case GL_DOT3_RGBA_EXT:
+ if (!ctx->Extensions.EXT_texture_env_dot3) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ case GL_DOT3_RGB:
+ case GL_DOT3_RGBA:
+ if (!ctx->Extensions.ARB_texture_env_dot3) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ if (!ctx->Extensions.ATI_texture_env_combine3) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.ModeRGB = mode;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_COMBINE_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum mode = (GLenum) (GLint) *param;
+ if (texUnit->Combine.ModeA == mode)
+ return;
+ switch (mode) {
+ case GL_REPLACE:
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_INTERPOLATE:
+ /* OK */
+ break;
+ case GL_SUBTRACT:
+ if (!ctx->Extensions.ARB_texture_env_combine) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ if (!ctx->Extensions.ATI_texture_env_combine3) {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
+ return;
+ }
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.ModeA = mode;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_SOURCE0_RGB:
+ case GL_SOURCE1_RGB:
+ case GL_SOURCE2_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum source = (GLenum) (GLint) *param;
+ const GLuint s = pname - GL_SOURCE0_RGB;
+ if (texUnit->Combine.SourceRGB[s] == source)
+ return;
+ if (source == GL_TEXTURE ||
+ source == GL_CONSTANT ||
+ source == GL_PRIMARY_COLOR ||
+ source == GL_PREVIOUS ||
+ (ctx->Extensions.ARB_texture_env_crossbar &&
+ source >= GL_TEXTURE0 &&
+ source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
+ (ctx->Extensions.ATI_texture_env_combine3 &&
+ (source == GL_ZERO || source == GL_ONE))) {
+ /* legal */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.SourceRGB[s] = source;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_SOURCE0_ALPHA:
+ case GL_SOURCE1_ALPHA:
+ case GL_SOURCE2_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum source = (GLenum) (GLint) *param;
+ const GLuint s = pname - GL_SOURCE0_ALPHA;
+ if (texUnit->Combine.SourceA[s] == source)
+ return;
+ if (source == GL_TEXTURE ||
+ source == GL_CONSTANT ||
+ source == GL_PRIMARY_COLOR ||
+ source == GL_PREVIOUS ||
+ (ctx->Extensions.ARB_texture_env_crossbar &&
+ source >= GL_TEXTURE0 &&
+ source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
+ (ctx->Extensions.ATI_texture_env_combine3 &&
+ (source == GL_ZERO || source == GL_ONE))) {
+ /* legal */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.SourceA[s] = source;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_OPERAND0_RGB:
+ case GL_OPERAND1_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ const GLuint s = pname - GL_OPERAND0_RGB;
+ if (texUnit->Combine.OperandRGB[s] == operand)
+ return;
+ switch (operand) {
+ case GL_SRC_COLOR:
+ case GL_ONE_MINUS_SRC_COLOR:
+ case GL_SRC_ALPHA:
+ case GL_ONE_MINUS_SRC_ALPHA:
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.OperandRGB[s] = operand;
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_OPERAND0_ALPHA:
+ case GL_OPERAND1_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ if (texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] == operand)
+ return;
+ switch (operand) {
+ case GL_SRC_ALPHA:
+ case GL_ONE_MINUS_SRC_ALPHA:
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] = operand;
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_OPERAND2_RGB:
+ if (ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ if (texUnit->Combine.OperandRGB[2] == operand)
+ return;
+ switch (operand) {
+ case GL_SRC_COLOR: /* ARB combine only */
+ case GL_ONE_MINUS_SRC_COLOR: /* ARB combine only */
+ case GL_SRC_ALPHA:
+ case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.OperandRGB[2] = operand;
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else if (ctx->Extensions.EXT_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ if (texUnit->Combine.OperandRGB[2] == operand)
+ return;
+ /* operand must be GL_SRC_ALPHA which is the initial value - thus
+ don't need to actually compare the operand to the possible value */
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_OPERAND2_ALPHA:
+ if (ctx->Extensions.ARB_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ if (texUnit->Combine.OperandA[2] == operand)
+ return;
+ switch (operand) {
+ case GL_SRC_ALPHA:
+ case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.OperandA[2] = operand;
+ break;
+ default:
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else if (ctx->Extensions.EXT_texture_env_combine) {
+ const GLenum operand = (GLenum) (GLint) *param;
+ if (texUnit->Combine.OperandA[2] == operand)
+ return;
+ /* operand must be GL_SRC_ALPHA which is the initial value - thus
+ don't need to actually compare the operand to the possible value */
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
+ return;
+ }
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_RGB_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ GLuint newshift;
+ if (*param == 1.0) {
+ newshift = 0;
+ }
+ else if (*param == 2.0) {
+ newshift = 1;
+ }
+ else if (*param == 4.0) {
+ newshift = 2;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
+ return;
+ }
+ if (texUnit->Combine.ScaleShiftRGB == newshift)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.ScaleShiftRGB = newshift;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ case GL_ALPHA_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ GLuint newshift;
+ if (*param == 1.0) {
+ newshift = 0;
+ }
+ else if (*param == 2.0) {
+ newshift = 1;
+ }
+ else if (*param == 4.0) {
+ newshift = 2;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glTexEnv(GL_ALPHA_SCALE not 1, 2 or 4)" );
+ return;
+ }
+ if (texUnit->Combine.ScaleShiftA == newshift)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->Combine.ScaleShiftA = newshift;
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
+ return;
+ }
+ }
+ else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
+ /* GL_EXT_texture_lod_bias */
+ if (!ctx->Extensions.EXT_texture_lod_bias) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
+ return;
+ }
+ if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
+ if (texUnit->LodBias == param[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->LodBias = param[0];
+ }
+ else {
+ TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
+ return;
+ }
+ }
+ else if (target == GL_POINT_SPRITE_NV) {
+ /* GL_ARB_point_sprite / GL_NV_point_sprite */
+ if (!ctx->Extensions.NV_point_sprite
+ && !ctx->Extensions.ARB_point_sprite) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
+ return;
+ }
+ if (pname == GL_COORD_REPLACE_NV) {
+ const GLenum value = (GLenum) param[0];
+ if (value == GL_TRUE || value == GL_FALSE) {
+ /* It's kind of weird to set point state via glTexEnv,
+ * but that's what the spec calls for.
+ */
+ const GLboolean state = (GLboolean) value;
+ if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_POINT);
+ ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
+ return;
+ }
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
+ return;
+ }
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );
+ return;
+ }
+
+ if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(pname),
+ *param,
+ _mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
+
+ /* Tell device driver about the new texture environment */
+ if (ctx->Driver.TexEnv) {
+ (*ctx->Driver.TexEnv)( ctx, target, pname, param );
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
+{
+ _mesa_TexEnvfv( target, pname, &param );
+}
+
+
+
+void GLAPIENTRY
+_mesa_TexEnvi( GLenum target, GLenum pname, GLint param )
+{
+ GLfloat p[4];
+ p[0] = (GLfloat) param;
+ p[1] = p[2] = p[3] = 0.0;
+ _mesa_TexEnvfv( target, pname, p );
+}
+
+
+void GLAPIENTRY
+_mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
+{
+ GLfloat p[4];
+ if (pname == GL_TEXTURE_ENV_COLOR) {
+ p[0] = INT_TO_FLOAT( param[0] );
+ p[1] = INT_TO_FLOAT( param[1] );
+ p[2] = INT_TO_FLOAT( param[2] );
+ p[3] = INT_TO_FLOAT( param[3] );
+ }
+ else {
+ p[0] = (GLfloat) param[0];
+ p[1] = p[2] = p[3] = 0; /* init to zero, just to be safe */
+ }
+ _mesa_TexEnvfv( target, pname, p );
+}
+
+
+void GLAPIENTRY
+_mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
+{
+ GLuint maxUnit;
+ const struct gl_texture_unit *texUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
+ ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+ if (ctx->Texture.CurrentUnit >= maxUnit) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ if (target == GL_TEXTURE_ENV) {
+ switch (pname) {
+ case GL_TEXTURE_ENV_MODE:
+ *params = ENUM_TO_FLOAT(texUnit->EnvMode);
+ break;
+ case GL_TEXTURE_ENV_COLOR:
+ COPY_4FV( params, texUnit->EnvColor );
+ break;
+ case GL_COMBINE_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.ModeRGB;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_COMBINE_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.ModeA;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE0_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceRGB[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE1_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceRGB[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE2_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceRGB[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE0_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceA[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE1_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceA[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_SOURCE2_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.SourceA[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND0_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandRGB[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND1_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandRGB[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND2_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandRGB[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND0_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandA[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND1_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandA[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_OPERAND2_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLfloat) texUnit->Combine.OperandA[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ }
+ break;
+ case GL_RGB_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ if (texUnit->Combine.ScaleShiftRGB == 0)
+ *params = 1.0;
+ else if (texUnit->Combine.ScaleShiftRGB == 1)
+ *params = 2.0;
+ else
+ *params = 4.0;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ return;
+ }
+ break;
+ case GL_ALPHA_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ if (texUnit->Combine.ScaleShiftA == 0)
+ *params = 1.0;
+ else if (texUnit->Combine.ScaleShiftA == 1)
+ *params = 2.0;
+ else
+ *params = 4.0;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
+ return;
+ }
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname=0x%x)", pname);
+ }
+ }
+ else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
+ /* GL_EXT_texture_lod_bias */
+ if (!ctx->Extensions.EXT_texture_lod_bias) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
+ return;
+ }
+ if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
+ *params = texUnit->LodBias;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
+ return;
+ }
+ }
+ else if (target == GL_POINT_SPRITE_NV) {
+ /* GL_ARB_point_sprite / GL_NV_point_sprite */
+ if (!ctx->Extensions.NV_point_sprite
+ && !ctx->Extensions.ARB_point_sprite) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
+ return;
+ }
+ if (pname == GL_COORD_REPLACE_NV) {
+ *params = (GLfloat) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
+ return;
+ }
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
+ return;
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
+{
+ GLuint maxUnit;
+ const struct gl_texture_unit *texUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
+ ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
+ if (ctx->Texture.CurrentUnit >= maxUnit) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ if (target == GL_TEXTURE_ENV) {
+ switch (pname) {
+ case GL_TEXTURE_ENV_MODE:
+ *params = (GLint) texUnit->EnvMode;
+ break;
+ case GL_TEXTURE_ENV_COLOR:
+ params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );
+ params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );
+ params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );
+ params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
+ break;
+ case GL_COMBINE_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.ModeRGB;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_COMBINE_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.ModeA;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE0_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceRGB[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE1_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceRGB[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE2_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceRGB[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE0_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceA[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE1_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceA[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_SOURCE2_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.SourceA[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND0_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandRGB[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND1_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandRGB[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND2_RGB:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandRGB[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND0_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandA[0];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND1_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandA[1];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_OPERAND2_ALPHA:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ *params = (GLint) texUnit->Combine.OperandA[2];
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ }
+ break;
+ case GL_RGB_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ if (texUnit->Combine.ScaleShiftRGB == 0)
+ *params = 1;
+ else if (texUnit->Combine.ScaleShiftRGB == 1)
+ *params = 2;
+ else
+ *params = 4;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ return;
+ }
+ break;
+ case GL_ALPHA_SCALE:
+ if (ctx->Extensions.EXT_texture_env_combine ||
+ ctx->Extensions.ARB_texture_env_combine) {
+ if (texUnit->Combine.ScaleShiftA == 0)
+ *params = 1;
+ else if (texUnit->Combine.ScaleShiftA == 1)
+ *params = 2;
+ else
+ *params = 4;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
+ return;
+ }
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname=0x%x)",
+ pname);
+ }
+ }
+ else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
+ /* GL_EXT_texture_lod_bias */
+ if (!ctx->Extensions.EXT_texture_lod_bias) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
+ return;
+ }
+ if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
+ *params = (GLint) texUnit->LodBias;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
+ return;
+ }
+ }
+ else if (target == GL_POINT_SPRITE_NV) {
+ /* GL_ARB_point_sprite / GL_NV_point_sprite */
+ if (!ctx->Extensions.NV_point_sprite
+ && !ctx->Extensions.ARB_point_sprite) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
+ return;
+ }
+ if (pname == GL_COORD_REPLACE_NV) {
+ *params = (GLint) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
+ return;
+ }
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
+ return;
+ }
+}
+
+
+
+
+/**********************************************************************/
+/* Texture Parameters */
+/**********************************************************************/
+
+static GLboolean
+_mesa_validate_texture_wrap_mode(GLcontext * ctx,
+ GLenum target, GLenum eparam)
+{
+ const struct gl_extensions * const e = & ctx->Extensions;
+
+ if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
+ (eparam == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
+ /* any texture target */
+ return GL_TRUE;
+ }
+ else if (target != GL_TEXTURE_RECTANGLE_NV &&
+ (eparam == GL_REPEAT ||
+ (eparam == GL_MIRRORED_REPEAT &&
+ e->ARB_texture_mirrored_repeat) ||
+ (eparam == GL_MIRROR_CLAMP_EXT &&
+ (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
+ (eparam == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
+ (e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
+ (eparam == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
+ (e->EXT_texture_mirror_clamp)))) {
+ /* non-rectangle texture */
+ return GL_TRUE;
+ }
+
+ _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return GL_FALSE;
+}
+
+
+void GLAPIENTRY
+_mesa_TexParameterf( GLenum target, GLenum pname, GLfloat param )
+{
+ _mesa_TexParameterfv(target, pname, &param);
+}
+
+
+void GLAPIENTRY
+_mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
+{
+ const GLenum eparam = (GLenum) (GLint) params[0];
+ struct gl_texture_unit *texUnit;
+ struct gl_texture_object *texObj;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glTexParameter %s %s %.1f(%s)...\n",
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(pname),
+ *params,
+ _mesa_lookup_enum_by_nr(eparam));
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glTexParameterfv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ switch (target) {
+ case GL_TEXTURE_1D:
+ texObj = texUnit->Current1D;
+ break;
+ case GL_TEXTURE_2D:
+ texObj = texUnit->Current2D;
+ break;
+ case GL_TEXTURE_3D:
+ texObj = texUnit->Current3D;
+ break;
+ case GL_TEXTURE_CUBE_MAP:
+ if (!ctx->Extensions.ARB_texture_cube_map) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
+ return;
+ }
+ texObj = texUnit->CurrentCubeMap;
+ break;
+ case GL_TEXTURE_RECTANGLE_NV:
+ if (!ctx->Extensions.NV_texture_rectangle) {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
+ return;
+ }
+ texObj = texUnit->CurrentRect;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
+ return;
+ }
+
+ switch (pname) {
+ case GL_TEXTURE_MIN_FILTER:
+ /* A small optimization */
+ if (texObj->MinFilter == eparam)
+ return;
+ if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MinFilter = eparam;
+ }
+ else if ((eparam==GL_NEAREST_MIPMAP_NEAREST ||
+ eparam==GL_LINEAR_MIPMAP_NEAREST ||
+ eparam==GL_NEAREST_MIPMAP_LINEAR ||
+ eparam==GL_LINEAR_MIPMAP_LINEAR) &&
+ texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MinFilter = eparam;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ break;
+ case GL_TEXTURE_MAG_FILTER:
+ /* A small optimization */
+ if (texObj->MagFilter == eparam)
+ return;
+
+ if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MagFilter = eparam;
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ break;
+ case GL_TEXTURE_WRAP_S:
+ if (texObj->WrapS == eparam)
+ return;
+ if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->WrapS = eparam;
+ }
+ else {
+ return;
+ }
+ break;
+ case GL_TEXTURE_WRAP_T:
+ if (texObj->WrapT == eparam)
+ return;
+ if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->WrapT = eparam;
+ }
+ else {
+ return;
+ }
+ break;
+ case GL_TEXTURE_WRAP_R:
+ if (texObj->WrapR == eparam)
+ return;
+ if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->WrapR = eparam;
+ }
+ else {
+ return;
+ }
+ break;
+ case GL_TEXTURE_BORDER_COLOR:
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->BorderColor[RCOMP] = params[0];
+ texObj->BorderColor[GCOMP] = params[1];
+ texObj->BorderColor[BCOMP] = params[2];
+ texObj->BorderColor[ACOMP] = params[3];
+ UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[RCOMP], params[0]);
+ UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[GCOMP], params[1]);
+ UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[BCOMP], params[2]);
+ UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[ACOMP], params[3]);
+ break;
+ case GL_TEXTURE_MIN_LOD:
+ if (texObj->MinLod == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MinLod = params[0];
+ break;
+ case GL_TEXTURE_MAX_LOD:
+ if (texObj->MaxLod == params[0])
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MaxLod = params[0];
+ break;
+ case GL_TEXTURE_BASE_LEVEL:
+ if (params[0] < 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ if (target == GL_TEXTURE_RECTANGLE_NV && params[0] != 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->BaseLevel = (GLint) params[0];
+ break;
+ case GL_TEXTURE_MAX_LEVEL:
+ if (params[0] < 0.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->MaxLevel = (GLint) params[0];
+ break;
+ case GL_TEXTURE_PRIORITY:
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->Priority = CLAMP( params[0], 0.0F, 1.0F );
+ break;
+ case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+ if (ctx->Extensions.EXT_texture_filter_anisotropic) {
+ if (params[0] < 1.0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
+ return;
+ }
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ /* clamp to max, that's what NVIDIA does */
+ texObj->MaxAnisotropy = MIN2(params[0],
+ ctx->Const.MaxTextureMaxAnisotropy);
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->CompareFlag = params[0] ? GL_TRUE : GL_FALSE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_TEXTURE_COMPARE_SGIX)");
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ GLenum op = (GLenum) params[0];
+ if (op == GL_TEXTURE_LEQUAL_R_SGIX ||
+ op == GL_TEXTURE_GEQUAL_R_SGIX) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->CompareOperator = op;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param)");
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_TEXTURE_COMPARE_OPERATOR_SGIX)");
+ return;
+ }
+ break;
+ case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
+ if (ctx->Extensions.SGIX_shadow_ambient) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->ShadowAmbient = CLAMP(params[0], 0.0F, 1.0F);
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_SHADOW_AMBIENT_SGIX)");
+ return;
+ }
+ break;
+ case GL_GENERATE_MIPMAP_SGIS:
+ if (ctx->Extensions.SGIS_generate_mipmap) {
+ texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_GENERATE_MIPMAP_SGIS)");
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_MODE_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ const GLenum mode = (GLenum) params[0];
+ if (mode == GL_NONE || mode == GL_COMPARE_R_TO_TEXTURE_ARB) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->CompareMode = mode;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(bad GL_TEXTURE_COMPARE_MODE_ARB: 0x%x)", mode);
+ return;
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_TEXTURE_COMPARE_MODE_ARB)");
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_FUNC_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ const GLenum func = (GLenum) params[0];
+ if (func == GL_LEQUAL || func == GL_GEQUAL) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->CompareFunc = func;
+ }
+ else if (ctx->Extensions.EXT_shadow_funcs &&
+ (func == GL_EQUAL ||
+ func == GL_NOTEQUAL ||
+ func == GL_LESS ||
+ func == GL_GREATER ||
+ func == GL_ALWAYS ||
+ func == GL_NEVER)) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->CompareFunc = func;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(bad GL_TEXTURE_COMPARE_FUNC_ARB)");
+ return;
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_TEXTURE_COMPARE_FUNC_ARB)");
+ return;
+ }
+ break;
+ case GL_DEPTH_TEXTURE_MODE_ARB:
+ if (ctx->Extensions.ARB_depth_texture) {
+ const GLenum result = (GLenum) params[0];
+ if (result == GL_LUMINANCE || result == GL_INTENSITY
+ || result == GL_ALPHA) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->DepthMode = result;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(bad GL_DEPTH_TEXTURE_MODE_ARB)");
+ return;
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=GL_DEPTH_TEXTURE_MODE_ARB)");
+ return;
+ }
+ break;
+ case GL_TEXTURE_LOD_BIAS:
+ /* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias*/
+ if (ctx->Extensions.EXT_texture_lod_bias) {
+ if (texObj->LodBias != params[0]) {
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texObj->LodBias = params[0];
+ }
+ }
+ break;
+
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glTexParameter(pname=0x%x)", pname);
+ return;
+ }
+
+ texObj->Complete = GL_FALSE;
+
+ if (ctx->Driver.TexParameter) {
+ (*ctx->Driver.TexParameter)( ctx, target, texObj, pname, params );
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_TexParameteri( GLenum target, GLenum pname, GLint param )
+{
+ GLfloat fparam[4];
+ if (pname == GL_TEXTURE_PRIORITY)
+ fparam[0] = INT_TO_FLOAT(param);
+ else
+ fparam[0] = (GLfloat) param;
+ fparam[1] = fparam[2] = fparam[3] = 0.0;
+ _mesa_TexParameterfv(target, pname, fparam);
+}
+
+
+void GLAPIENTRY
+_mesa_TexParameteriv( GLenum target, GLenum pname, const GLint *params )
+{
+ GLfloat fparam[4];
+ if (pname == GL_TEXTURE_BORDER_COLOR) {
+ fparam[0] = INT_TO_FLOAT(params[0]);
+ fparam[1] = INT_TO_FLOAT(params[1]);
+ fparam[2] = INT_TO_FLOAT(params[2]);
+ fparam[3] = INT_TO_FLOAT(params[3]);
+ }
+ else {
+ if (pname == GL_TEXTURE_PRIORITY)
+ fparam[0] = INT_TO_FLOAT(params[0]);
+ else
+ fparam[0] = (GLfloat) params[0];
+ fparam[1] = fparam[2] = fparam[3] = 0.0F;
+ }
+ _mesa_TexParameterfv(target, pname, fparam);
+}
+
+
+void GLAPIENTRY
+_mesa_GetTexLevelParameterfv( GLenum target, GLint level,
+ GLenum pname, GLfloat *params )
+{
+ GLint iparam;
+ _mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
+ *params = (GLfloat) iparam;
+}
+
+
+static GLuint
+tex_image_dimensions(GLcontext *ctx, GLenum target)
+{
+ switch (target) {
+ case GL_TEXTURE_1D:
+ case GL_PROXY_TEXTURE_1D:
+ return 1;
+ case GL_TEXTURE_2D:
+ case GL_PROXY_TEXTURE_2D:
+ return 2;
+ case GL_TEXTURE_3D:
+ case GL_PROXY_TEXTURE_3D:
+ return 3;
+ case GL_TEXTURE_CUBE_MAP:
+ case GL_PROXY_TEXTURE_CUBE_MAP:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
+ return ctx->Extensions.ARB_texture_cube_map ? 2 : 0;
+ case GL_TEXTURE_RECTANGLE_NV:
+ case GL_PROXY_TEXTURE_RECTANGLE_NV:
+ return ctx->Extensions.NV_texture_rectangle ? 2 : 0;
+ default:
+ _mesa_problem(ctx, "bad target in _mesa_tex_target_dimensions()");
+ return 0;
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_GetTexLevelParameteriv( GLenum target, GLint level,
+ GLenum pname, GLint *params )
+{
+ const struct gl_texture_unit *texUnit;
+ const struct gl_texture_image *img = NULL;
+ GLuint dimensions;
+ GLboolean isProxy;
+ GLint maxLevels;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetTexLevelParameteriv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ /* this will catch bad target values */
+ dimensions = tex_image_dimensions(ctx, target); /* 1, 2 or 3 */
+ if (dimensions == 0) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(target)");
+ return;
+ }
+
+ maxLevels = _mesa_max_texture_levels(ctx, target);
+ if (maxLevels == 0) {
+ /* should not happen since <target> was just checked above */
+ _mesa_problem(ctx, "maxLevels=0 in _mesa_GetTexLevelParameter");
+ return;
+ }
+
+ if (level < 0 || level >= maxLevels) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
+ return;
+ }
+
+ img = _mesa_select_tex_image(ctx, texUnit, target, level);
+ if (!img || !img->TexFormat) {
+ /* undefined texture image */
+ if (pname == GL_TEXTURE_COMPONENTS)
+ *params = 1;
+ else
+ *params = 0;
+ return;
+ }
+
+ isProxy = _mesa_is_proxy_texture(target);
+
+ switch (pname) {
+ case GL_TEXTURE_WIDTH:
+ *params = img->Width;
+ return;
+ case GL_TEXTURE_HEIGHT:
+ *params = img->Height;
+ return;
+ case GL_TEXTURE_DEPTH:
+ *params = img->Depth;
+ return;
+ case GL_TEXTURE_INTERNAL_FORMAT:
+ *params = img->InternalFormat;
+ return;
+ case GL_TEXTURE_BORDER:
+ *params = img->Border;
+ return;
+ case GL_TEXTURE_RED_SIZE:
+ if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
+ *params = img->TexFormat->RedBits;
+ else
+ *params = 0;
+ return;
+ case GL_TEXTURE_GREEN_SIZE:
+ if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
+ *params = img->TexFormat->GreenBits;
+ else
+ *params = 0;
+ return;
+ case GL_TEXTURE_BLUE_SIZE:
+ if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
+ *params = img->TexFormat->BlueBits;
+ else
+ *params = 0;
+ return;
+ case GL_TEXTURE_ALPHA_SIZE:
+ if (img->_BaseFormat == GL_ALPHA ||
+ img->_BaseFormat == GL_LUMINANCE_ALPHA ||
+ img->_BaseFormat == GL_RGBA)
+ *params = img->TexFormat->AlphaBits;
+ else
+ *params = 0;
+ return;
+ case GL_TEXTURE_INTENSITY_SIZE:
+ if (img->_BaseFormat != GL_INTENSITY)
+ *params = 0;
+ else if (img->TexFormat->IntensityBits > 0)
+ *params = img->TexFormat->IntensityBits;
+ else /* intensity probably stored as rgb texture */
+ *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
+ return;
+ case GL_TEXTURE_LUMINANCE_SIZE:
+ if (img->_BaseFormat != GL_LUMINANCE &&
+ img->_BaseFormat != GL_LUMINANCE_ALPHA)
+ *params = 0;
+ else if (img->TexFormat->LuminanceBits > 0)
+ *params = img->TexFormat->LuminanceBits;
+ else /* luminance probably stored as rgb texture */
+ *params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
+ return;
+ case GL_TEXTURE_INDEX_SIZE_EXT:
+ if (img->_BaseFormat == GL_COLOR_INDEX)
+ *params = img->TexFormat->IndexBits;
+ else
+ *params = 0;
+ return;
+ case GL_TEXTURE_DEPTH_SIZE_ARB:
+ if (ctx->Extensions.SGIX_depth_texture ||
+ ctx->Extensions.ARB_depth_texture)
+ *params = img->TexFormat->DepthBits;
+ else
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ return;
+ case GL_TEXTURE_STENCIL_SIZE_EXT:
+ if (ctx->Extensions.EXT_packed_depth_stencil) {
+ *params = img->TexFormat->StencilBits;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+
+ /* GL_ARB_texture_compression */
+ case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
+ if (ctx->Extensions.ARB_texture_compression) {
+ if (img->IsCompressed && !isProxy) {
+ /* Don't use ctx->Driver.CompressedTextureSize() since that
+ * may returned a padded hardware size.
+ */
+ *params = _mesa_compressed_texture_size(ctx, img->Width,
+ img->Height, img->Depth,
+ img->TexFormat->MesaFormat);
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_COMPRESSED:
+ if (ctx->Extensions.ARB_texture_compression) {
+ *params = (GLint) img->IsCompressed;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+
+ /* GL_ARB_texture_float */
+ case GL_TEXTURE_RED_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->RedBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_GREEN_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->GreenBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_BLUE_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->BlueBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_ALPHA_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->AlphaBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_LUMINANCE_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->LuminanceBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_INTENSITY_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->IntensityBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+ case GL_TEXTURE_DEPTH_TYPE_ARB:
+ if (ctx->Extensions.ARB_texture_float) {
+ *params = img->TexFormat->DepthBits ? img->TexFormat->DataType : GL_NONE;
+ }
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+ return;
+
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glGetTexLevelParameter[if]v(pname)");
+ }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
+{
+ struct gl_texture_unit *texUnit;
+ struct gl_texture_object *obj;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetTexParameterfv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ obj = _mesa_select_tex_object(ctx, texUnit, target);
+ if (!obj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(target)");
+ return;
+ }
+
+ switch (pname) {
+ case GL_TEXTURE_MAG_FILTER:
+ *params = ENUM_TO_FLOAT(obj->MagFilter);
+ return;
+ case GL_TEXTURE_MIN_FILTER:
+ *params = ENUM_TO_FLOAT(obj->MinFilter);
+ return;
+ case GL_TEXTURE_WRAP_S:
+ *params = ENUM_TO_FLOAT(obj->WrapS);
+ return;
+ case GL_TEXTURE_WRAP_T:
+ *params = ENUM_TO_FLOAT(obj->WrapT);
+ return;
+ case GL_TEXTURE_WRAP_R:
+ *params = ENUM_TO_FLOAT(obj->WrapR);
+ return;
+ case GL_TEXTURE_BORDER_COLOR:
+ params[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F);
+ params[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F);
+ params[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F);
+ params[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F);
+ return;
+ case GL_TEXTURE_RESIDENT:
+ {
+ GLboolean resident;
+ if (ctx->Driver.IsTextureResident)
+ resident = ctx->Driver.IsTextureResident(ctx, obj);
+ else
+ resident = GL_TRUE;
+ *params = ENUM_TO_FLOAT(resident);
+ }
+ return;
+ case GL_TEXTURE_PRIORITY:
+ *params = obj->Priority;
+ return;
+ case GL_TEXTURE_MIN_LOD:
+ *params = obj->MinLod;
+ return;
+ case GL_TEXTURE_MAX_LOD:
+ *params = obj->MaxLod;
+ return;
+ case GL_TEXTURE_BASE_LEVEL:
+ *params = (GLfloat) obj->BaseLevel;
+ return;
+ case GL_TEXTURE_MAX_LEVEL:
+ *params = (GLfloat) obj->MaxLevel;
+ return;
+ case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+ if (ctx->Extensions.EXT_texture_filter_anisotropic) {
+ *params = obj->MaxAnisotropy;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ *params = (GLfloat) obj->CompareFlag;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ *params = (GLfloat) obj->CompareOperator;
+ return;
+ }
+ break;
+ case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
+ if (ctx->Extensions.SGIX_shadow_ambient) {
+ *params = obj->ShadowAmbient;
+ return;
+ }
+ break;
+ case GL_GENERATE_MIPMAP_SGIS:
+ if (ctx->Extensions.SGIS_generate_mipmap) {
+ *params = (GLfloat) obj->GenerateMipmap;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_MODE_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ *params = (GLfloat) obj->CompareMode;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_FUNC_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ *params = (GLfloat) obj->CompareFunc;
+ return;
+ }
+ break;
+ case GL_DEPTH_TEXTURE_MODE_ARB:
+ if (ctx->Extensions.ARB_depth_texture) {
+ *params = (GLfloat) obj->DepthMode;
+ return;
+ }
+ break;
+ case GL_TEXTURE_LOD_BIAS:
+ if (ctx->Extensions.EXT_texture_lod_bias) {
+ *params = obj->LodBias;
+ return;
+ }
+ break;
+ default:
+ ; /* silence warnings */
+ }
+ /* If we get here, pname was an unrecognized enum */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)",
+ pname);
+}
+
+
+void GLAPIENTRY
+_mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
+{
+ struct gl_texture_unit *texUnit;
+ struct gl_texture_object *obj;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureImageUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetTexParameteriv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ obj = _mesa_select_tex_object(ctx, texUnit, target);
+ if (!obj) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(target)");
+ return;
+ }
+
+ switch (pname) {
+ case GL_TEXTURE_MAG_FILTER:
+ *params = (GLint) obj->MagFilter;
+ return;
+ case GL_TEXTURE_MIN_FILTER:
+ *params = (GLint) obj->MinFilter;
+ return;
+ case GL_TEXTURE_WRAP_S:
+ *params = (GLint) obj->WrapS;
+ return;
+ case GL_TEXTURE_WRAP_T:
+ *params = (GLint) obj->WrapT;
+ return;
+ case GL_TEXTURE_WRAP_R:
+ *params = (GLint) obj->WrapR;
+ return;
+ case GL_TEXTURE_BORDER_COLOR:
+ {
+ GLfloat b[4];
+ b[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F);
+ b[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F);
+ b[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F);
+ b[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F);
+ params[0] = FLOAT_TO_INT(b[0]);
+ params[1] = FLOAT_TO_INT(b[1]);
+ params[2] = FLOAT_TO_INT(b[2]);
+ params[3] = FLOAT_TO_INT(b[3]);
+ }
+ return;
+ case GL_TEXTURE_RESIDENT:
+ {
+ GLboolean resident;
+ if (ctx->Driver.IsTextureResident)
+ resident = ctx->Driver.IsTextureResident(ctx, obj);
+ else
+ resident = GL_TRUE;
+ *params = (GLint) resident;
+ }
+ return;
+ case GL_TEXTURE_PRIORITY:
+ *params = FLOAT_TO_INT(obj->Priority);
+ return;
+ case GL_TEXTURE_MIN_LOD:
+ *params = (GLint) obj->MinLod;
+ return;
+ case GL_TEXTURE_MAX_LOD:
+ *params = (GLint) obj->MaxLod;
+ return;
+ case GL_TEXTURE_BASE_LEVEL:
+ *params = obj->BaseLevel;
+ return;
+ case GL_TEXTURE_MAX_LEVEL:
+ *params = obj->MaxLevel;
+ return;
+ case GL_TEXTURE_MAX_ANISOTROPY_EXT:
+ if (ctx->Extensions.EXT_texture_filter_anisotropic) {
+ *params = (GLint) obj->MaxAnisotropy;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ *params = (GLint) obj->CompareFlag;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
+ if (ctx->Extensions.SGIX_shadow) {
+ *params = (GLint) obj->CompareOperator;
+ return;
+ }
+ break;
+ case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
+ if (ctx->Extensions.SGIX_shadow_ambient) {
+ *params = (GLint) FLOAT_TO_INT(obj->ShadowAmbient);
+ return;
+ }
+ break;
+ case GL_GENERATE_MIPMAP_SGIS:
+ if (ctx->Extensions.SGIS_generate_mipmap) {
+ *params = (GLint) obj->GenerateMipmap;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_MODE_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ *params = (GLint) obj->CompareMode;
+ return;
+ }
+ break;
+ case GL_TEXTURE_COMPARE_FUNC_ARB:
+ if (ctx->Extensions.ARB_shadow) {
+ *params = (GLint) obj->CompareFunc;
+ return;
+ }
+ break;
+ case GL_DEPTH_TEXTURE_MODE_ARB:
+ if (ctx->Extensions.ARB_depth_texture) {
+ *params = (GLint) obj->DepthMode;
+ return;
+ }
+ break;
+ case GL_TEXTURE_LOD_BIAS:
+ if (ctx->Extensions.EXT_texture_lod_bias) {
+ *params = (GLint) obj->LodBias;
+ return;
+ }
+ break;
+ default:
+ ; /* silence warnings */
+ }
+ /* If we get here, pname was an unrecognized enum */
+ _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
+}
+
+
+
+
+/**********************************************************************/
+/* Texture Coord Generation */
+/**********************************************************************/
+
+#if FEATURE_texgen
+void GLAPIENTRY
+_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ struct gl_texture_unit *texUnit;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
+ _mesa_lookup_enum_by_nr(coord),
+ _mesa_lookup_enum_by_nr(pname),
+ *params,
+ _mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ switch (coord) {
+ case GL_S:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ GLenum mode = (GLenum) (GLint) *params;
+ GLbitfield bits;
+ switch (mode) {
+ case GL_OBJECT_LINEAR:
+ bits = TEXGEN_OBJ_LINEAR;
+ break;
+ case GL_EYE_LINEAR:
+ bits = TEXGEN_EYE_LINEAR;
+ break;
+ case GL_REFLECTION_MAP_NV:
+ bits = TEXGEN_REFLECTION_MAP_NV;
+ break;
+ case GL_NORMAL_MAP_NV:
+ bits = TEXGEN_NORMAL_MAP_NV;
+ break;
+ case GL_SPHERE_MAP:
+ bits = TEXGEN_SPHERE_MAP;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
+ return;
+ }
+ if (texUnit->GenModeS == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->GenModeS = mode;
+ texUnit->_GenBitS = bits;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ if (TEST_EQ_4V(texUnit->ObjectPlaneS, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->ObjectPlaneS, params);
+ }
+ else if (pname==GL_EYE_PLANE) {
+ GLfloat tmp[4];
+ /* Transform plane equation by the inverse modelview matrix */
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+ _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+ }
+ _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
+ if (TEST_EQ_4V(texUnit->EyePlaneS, tmp))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->EyePlaneS, tmp);
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_T:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ GLenum mode = (GLenum) (GLint) *params;
+ GLbitfield bitt;
+ switch (mode) {
+ case GL_OBJECT_LINEAR:
+ bitt = TEXGEN_OBJ_LINEAR;
+ break;
+ case GL_EYE_LINEAR:
+ bitt = TEXGEN_EYE_LINEAR;
+ break;
+ case GL_REFLECTION_MAP_NV:
+ bitt = TEXGEN_REFLECTION_MAP_NV;
+ break;
+ case GL_NORMAL_MAP_NV:
+ bitt = TEXGEN_NORMAL_MAP_NV;
+ break;
+ case GL_SPHERE_MAP:
+ bitt = TEXGEN_SPHERE_MAP;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
+ return;
+ }
+ if (texUnit->GenModeT == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->GenModeT = mode;
+ texUnit->_GenBitT = bitt;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ if (TEST_EQ_4V(texUnit->ObjectPlaneT, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->ObjectPlaneT, params);
+ }
+ else if (pname==GL_EYE_PLANE) {
+ GLfloat tmp[4];
+ /* Transform plane equation by the inverse modelview matrix */
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+ _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+ }
+ _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
+ if (TEST_EQ_4V(texUnit->EyePlaneT, tmp))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->EyePlaneT, tmp);
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_R:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ GLenum mode = (GLenum) (GLint) *params;
+ GLbitfield bitr;
+ switch (mode) {
+ case GL_OBJECT_LINEAR:
+ bitr = TEXGEN_OBJ_LINEAR;
+ break;
+ case GL_REFLECTION_MAP_NV:
+ bitr = TEXGEN_REFLECTION_MAP_NV;
+ break;
+ case GL_NORMAL_MAP_NV:
+ bitr = TEXGEN_NORMAL_MAP_NV;
+ break;
+ case GL_EYE_LINEAR:
+ bitr = TEXGEN_EYE_LINEAR;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
+ return;
+ }
+ if (texUnit->GenModeR == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->GenModeR = mode;
+ texUnit->_GenBitR = bitr;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ if (TEST_EQ_4V(texUnit->ObjectPlaneR, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->ObjectPlaneR, params);
+ }
+ else if (pname==GL_EYE_PLANE) {
+ GLfloat tmp[4];
+ /* Transform plane equation by the inverse modelview matrix */
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+ _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+ }
+ _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
+ if (TEST_EQ_4V(texUnit->EyePlaneR, tmp))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->EyePlaneR, tmp);
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_Q:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ GLenum mode = (GLenum) (GLint) *params;
+ GLbitfield bitq;
+ switch (mode) {
+ case GL_OBJECT_LINEAR:
+ bitq = TEXGEN_OBJ_LINEAR;
+ break;
+ case GL_EYE_LINEAR:
+ bitq = TEXGEN_EYE_LINEAR;
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
+ return;
+ }
+ if (texUnit->GenModeQ == mode)
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ texUnit->GenModeQ = mode;
+ texUnit->_GenBitQ = bitq;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ if (TEST_EQ_4V(texUnit->ObjectPlaneQ, params))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->ObjectPlaneQ, params);
+ }
+ else if (pname==GL_EYE_PLANE) {
+ GLfloat tmp[4];
+ /* Transform plane equation by the inverse modelview matrix */
+ if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
+ _math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
+ }
+ _mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
+ if (TEST_EQ_4V(texUnit->EyePlaneQ, tmp))
+ return;
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+ COPY_4FV(texUnit->EyePlaneQ, tmp);
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
+ return;
+ }
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(coord)" );
+ return;
+ }
+
+ if (ctx->Driver.TexGen)
+ ctx->Driver.TexGen( ctx, coord, pname, params );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
+{
+ GLfloat p[4];
+ p[0] = (GLfloat) params[0];
+ if (pname == GL_TEXTURE_GEN_MODE) {
+ p[1] = p[2] = p[3] = 0.0F;
+ }
+ else {
+ p[1] = (GLfloat) params[1];
+ p[2] = (GLfloat) params[2];
+ p[3] = (GLfloat) params[3];
+ }
+ _mesa_TexGenfv(coord, pname, p);
+}
+
+
+void GLAPIENTRY
+_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
+{
+ GLfloat p = (GLfloat) param;
+ _mesa_TexGenfv( coord, pname, &p );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
+{
+ GLfloat p[4];
+ p[0] = (GLfloat) params[0];
+ if (pname == GL_TEXTURE_GEN_MODE) {
+ p[1] = p[2] = p[3] = 0.0F;
+ }
+ else {
+ p[1] = (GLfloat) params[1];
+ p[2] = (GLfloat) params[2];
+ p[3] = (GLfloat) params[3];
+ }
+ _mesa_TexGenfv( coord, pname, p );
+}
+
+
+void GLAPIENTRY
+_mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
+{
+ _mesa_TexGenfv(coord, pname, &param);
+}
+
+
+void GLAPIENTRY
+_mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
+{
+ _mesa_TexGeniv( coord, pname, &param );
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
+{
+ const struct gl_texture_unit *texUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGendv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ switch (coord) {
+ case GL_S:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_DOUBLE(texUnit->GenModeS);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneS );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneS );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
+ return;
+ }
+ break;
+ case GL_T:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_DOUBLE(texUnit->GenModeT);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneT );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneT );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
+ return;
+ }
+ break;
+ case GL_R:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_DOUBLE(texUnit->GenModeR);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneR );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneR );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
+ return;
+ }
+ break;
+ case GL_Q:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_DOUBLE(texUnit->GenModeQ);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneQ );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneQ );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
+ return;
+ }
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)" );
+ return;
+ }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
+{
+ const struct gl_texture_unit *texUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ switch (coord) {
+ case GL_S:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_FLOAT(texUnit->GenModeS);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneS );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneS );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_T:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_FLOAT(texUnit->GenModeT);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneT );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneT );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_R:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_FLOAT(texUnit->GenModeR);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneR );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneR );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
+ return;
+ }
+ break;
+ case GL_Q:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = ENUM_TO_FLOAT(texUnit->GenModeQ);
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ COPY_4V( params, texUnit->ObjectPlaneQ );
+ }
+ else if (pname==GL_EYE_PLANE) {
+ COPY_4V( params, texUnit->EyePlaneQ );
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
+ return;
+ }
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)" );
+ return;
+ }
+}
+
+
+
+void GLAPIENTRY
+_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
+{
+ const struct gl_texture_unit *texUnit;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGeniv(current unit)");
+ return;
+ }
+
+ texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
+
+ switch (coord) {
+ case GL_S:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = texUnit->GenModeS;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ params[0] = (GLint) texUnit->ObjectPlaneS[0];
+ params[1] = (GLint) texUnit->ObjectPlaneS[1];
+ params[2] = (GLint) texUnit->ObjectPlaneS[2];
+ params[3] = (GLint) texUnit->ObjectPlaneS[3];
+ }
+ else if (pname==GL_EYE_PLANE) {
+ params[0] = (GLint) texUnit->EyePlaneS[0];
+ params[1] = (GLint) texUnit->EyePlaneS[1];
+ params[2] = (GLint) texUnit->EyePlaneS[2];
+ params[3] = (GLint) texUnit->EyePlaneS[3];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
+ return;
+ }
+ break;
+ case GL_T:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = texUnit->GenModeT;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ params[0] = (GLint) texUnit->ObjectPlaneT[0];
+ params[1] = (GLint) texUnit->ObjectPlaneT[1];
+ params[2] = (GLint) texUnit->ObjectPlaneT[2];
+ params[3] = (GLint) texUnit->ObjectPlaneT[3];
+ }
+ else if (pname==GL_EYE_PLANE) {
+ params[0] = (GLint) texUnit->EyePlaneT[0];
+ params[1] = (GLint) texUnit->EyePlaneT[1];
+ params[2] = (GLint) texUnit->EyePlaneT[2];
+ params[3] = (GLint) texUnit->EyePlaneT[3];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
+ return;
+ }
+ break;
+ case GL_R:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = texUnit->GenModeR;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ params[0] = (GLint) texUnit->ObjectPlaneR[0];
+ params[1] = (GLint) texUnit->ObjectPlaneR[1];
+ params[2] = (GLint) texUnit->ObjectPlaneR[2];
+ params[3] = (GLint) texUnit->ObjectPlaneR[3];
+ }
+ else if (pname==GL_EYE_PLANE) {
+ params[0] = (GLint) texUnit->EyePlaneR[0];
+ params[1] = (GLint) texUnit->EyePlaneR[1];
+ params[2] = (GLint) texUnit->EyePlaneR[2];
+ params[3] = (GLint) texUnit->EyePlaneR[3];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
+ return;
+ }
+ break;
+ case GL_Q:
+ if (pname==GL_TEXTURE_GEN_MODE) {
+ params[0] = texUnit->GenModeQ;
+ }
+ else if (pname==GL_OBJECT_PLANE) {
+ params[0] = (GLint) texUnit->ObjectPlaneQ[0];
+ params[1] = (GLint) texUnit->ObjectPlaneQ[1];
+ params[2] = (GLint) texUnit->ObjectPlaneQ[2];
+ params[3] = (GLint) texUnit->ObjectPlaneQ[3];
+ }
+ else if (pname==GL_EYE_PLANE) {
+ params[0] = (GLint) texUnit->EyePlaneQ[0];
+ params[1] = (GLint) texUnit->EyePlaneQ[1];
+ params[2] = (GLint) texUnit->EyePlaneQ[2];
+ params[3] = (GLint) texUnit->EyePlaneQ[3];
+ }
+ else {
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
+ return;
+ }
+ break;
+ default:
+ _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)" );
+ return;
+ }
+}
+#endif
+
+
+/* GL_ARB_multitexture */
+void GLAPIENTRY
+_mesa_ActiveTextureARB(GLenum texture)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ const GLuint texUnit = texture - GL_TEXTURE0;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
+ _mesa_debug(ctx, "glActiveTexture %s\n",
+ _mesa_lookup_enum_by_nr(texture));
+
+ /* XXX error-check against max(coordunits, imageunits) */
+ if (texUnit >= ctx->Const.MaxTextureUnits) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glActiveTexture(texture)");
+ return;
+ }
+
+ if (ctx->Texture.CurrentUnit == texUnit)
+ return;
+
+ FLUSH_VERTICES(ctx, _NEW_TEXTURE);
+
+ ctx->Texture.CurrentUnit = texUnit;
+ if (ctx->Transform.MatrixMode == GL_TEXTURE) {
+ /* update current stack pointer */
+ ctx->CurrentStack = &ctx->TextureMatrixStack[texUnit];
+ }
+
+ if (ctx->Driver.ActiveTexture) {
+ (*ctx->Driver.ActiveTexture)( ctx, (GLuint) texUnit );
+ }
+}
+
+
+/* GL_ARB_multitexture */
+void GLAPIENTRY
+_mesa_ClientActiveTextureARB(GLenum texture)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLuint texUnit = texture - GL_TEXTURE0;
+ ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (texUnit >= ctx->Const.MaxTextureCoordUnits) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTexture(texture)");
+ return;
+ }
+
+ FLUSH_VERTICES(ctx, _NEW_ARRAY);
+ ctx->Array.ActiveTexture = texUnit;
+}
+
+
+
+/**********************************************************************/
+/***** State management *****/
+/**********************************************************************/
+
+
+/**
+ * \note This routine refers to derived texture attribute values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE_MATRIX. On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_textures(), below.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_matrices( GLcontext *ctx )
+{
+ GLuint i;
+
+ ctx->Texture._TexMatEnabled = 0;
+
+ for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
+ if (_math_matrix_is_dirty(ctx->TextureMatrixStack[i].Top)) {
+ _math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
+
+ if (ctx->Texture.Unit[i]._ReallyEnabled &&
+ ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
+ ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
+
+ if (ctx->Driver.TextureMatrix)
+ ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
+ }
+ }
+}
+
+
+/**
+ * Helper function for determining which texture object (1D, 2D, cube, etc)
+ * should actually be used.
+ */
+static void
+texture_override(GLcontext *ctx,
+ struct gl_texture_unit *texUnit, GLbitfield enableBits,
+ struct gl_texture_object *texObj, GLuint textureBit)
+{
+ if (!texUnit->_ReallyEnabled && (enableBits & textureBit)) {
+ if (!texObj->Complete) {
+ _mesa_test_texobj_completeness(ctx, texObj);
+ }
+ if (texObj->Complete) {
+ texUnit->_ReallyEnabled = textureBit;
+ texUnit->_Current = texObj;
+ }
+ }
+}
+
+
+/**
+ * \note This routine refers to derived texture matrix values to
+ * compute the ENABLE_TEXMAT flags, but is only called on
+ * _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
+ * flags are updated by _mesa_update_texture_matrices, above.
+ *
+ * \param ctx GL context.
+ */
+static void
+update_texture_state( GLcontext *ctx )
+{
+ GLuint unit;
+
+#if FEATURE_ARB_fragment_shader
+ struct gl2_program_intf **prog = ctx->ShaderObjects.CurrentProgram;
+ GLbitfield progteximageusage[MAX_TEXTURE_IMAGE_UNITS];
+#endif
+
+ ctx->NewState |= _NEW_TEXTURE; /* TODO: only set this if there are
+ * actual changes.
+ */
+
+ ctx->Texture._EnabledUnits = 0;
+ ctx->Texture._GenFlags = 0;
+ ctx->Texture._TexMatEnabled = 0;
+ ctx->Texture._TexGenEnabled = 0;
+
+#if FEATURE_ARB_fragment_shader
+ /*
+ * Grab texture image usage state from shader program. It must be
+ * grabbed every time uniform sampler changes, so maybe there is a
+ * better place to perform these rather expensive computations.
+ */
+ if (ctx->ShaderObjects._FragmentShaderPresent) {
+ (**prog).GetTextureImageUsage (prog, progteximageusage);
+ }
+#endif /* FEATURE_ARB_fragment_shader */
+
+ /*
+ * Update texture unit state.
+ */
+ for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
+ struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+ GLbitfield enableBits;
+
+ texUnit->_Current = NULL;
+ texUnit->_ReallyEnabled = 0;
+ texUnit->_GenFlags = 0;
+
+ /* Get the bitmask of texture enables */
+#if FEATURE_ARB_fragment_shader
+ if (ctx->ShaderObjects._FragmentShaderPresent) {
+ enableBits = progteximageusage[unit];
+ }
+ else
+#endif
+ if (ctx->FragmentProgram._Enabled) {
+ enableBits = ctx->FragmentProgram.Current->TexturesUsed[unit];
+ }
+ else {
+ if (!texUnit->Enabled)
+ continue;
+ enableBits = texUnit->Enabled;
+ }
+
+ /* Look for the highest-priority texture target that's enabled and
+ * complete. That's the one we'll use for texturing. If we're using
+ * a fragment program we're guaranteed that bitcount(enabledBits) <= 1.
+ */
+ texture_override(ctx, texUnit, enableBits,
+ texUnit->CurrentCubeMap, TEXTURE_CUBE_BIT);
+ texture_override(ctx, texUnit, enableBits,
+ texUnit->Current3D, TEXTURE_3D_BIT);
+ texture_override(ctx, texUnit, enableBits,
+ texUnit->CurrentRect, TEXTURE_RECT_BIT);
+ texture_override(ctx, texUnit, enableBits,
+ texUnit->Current2D, TEXTURE_2D_BIT);
+ texture_override(ctx, texUnit, enableBits,
+ texUnit->Current1D, TEXTURE_1D_BIT);
+
+ if (!texUnit->_ReallyEnabled) {
+ continue;
+ }
+
+ if (texUnit->_ReallyEnabled)
+ ctx->Texture._EnabledUnits |= (1 << unit);
+
+ if (texUnit->EnvMode == GL_COMBINE) {
+ texUnit->_CurrentCombine = & texUnit->Combine;
+ }
+ else {
+ const struct gl_texture_object *texObj = texUnit->_Current;
+ GLenum format = texObj->Image[0][texObj->BaseLevel]->_BaseFormat;
+ if (format == GL_COLOR_INDEX) {
+ format = GL_RGBA; /* a bit of a hack */
+ }
+ else if (format == GL_DEPTH_COMPONENT
+ || format == GL_DEPTH_STENCIL_EXT) {
+ format = texObj->DepthMode;
+ }
+ calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);
+ texUnit->_CurrentCombine = & texUnit->_EnvMode;
+ }
+
+ switch (texUnit->_CurrentCombine->ModeRGB) {
+ case GL_REPLACE:
+ texUnit->_CurrentCombine->_NumArgsRGB = 1;
+ break;
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_SUBTRACT:
+ case GL_DOT3_RGB:
+ case GL_DOT3_RGBA:
+ case GL_DOT3_RGB_EXT:
+ case GL_DOT3_RGBA_EXT:
+ texUnit->_CurrentCombine->_NumArgsRGB = 2;
+ break;
+ case GL_INTERPOLATE:
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ texUnit->_CurrentCombine->_NumArgsRGB = 3;
+ break;
+ default:
+ texUnit->_CurrentCombine->_NumArgsRGB = 0;
+ _mesa_problem(ctx, "invalid RGB combine mode in update_texture_state");
+ return;
+ }
+
+ switch (texUnit->_CurrentCombine->ModeA) {
+ case GL_REPLACE:
+ texUnit->_CurrentCombine->_NumArgsA = 1;
+ break;
+ case GL_MODULATE:
+ case GL_ADD:
+ case GL_ADD_SIGNED:
+ case GL_SUBTRACT:
+ texUnit->_CurrentCombine->_NumArgsA = 2;
+ break;
+ case GL_INTERPOLATE:
+ case GL_MODULATE_ADD_ATI:
+ case GL_MODULATE_SIGNED_ADD_ATI:
+ case GL_MODULATE_SUBTRACT_ATI:
+ texUnit->_CurrentCombine->_NumArgsA = 3;
+ break;
+ default:
+ texUnit->_CurrentCombine->_NumArgsA = 0;
+ _mesa_problem(ctx, "invalid Alpha combine mode in update_texture_state");
+ break;
+ }
+
+ if (texUnit->TexGenEnabled) {
+ if (texUnit->TexGenEnabled & S_BIT) {
+ texUnit->_GenFlags |= texUnit->_GenBitS;
+ }
+ if (texUnit->TexGenEnabled & T_BIT) {
+ texUnit->_GenFlags |= texUnit->_GenBitT;
+ }
+ if (texUnit->TexGenEnabled & Q_BIT) {
+ texUnit->_GenFlags |= texUnit->_GenBitQ;
+ }
+ if (texUnit->TexGenEnabled & R_BIT) {
+ texUnit->_GenFlags |= texUnit->_GenBitR;
+ }
+
+ ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
+ ctx->Texture._GenFlags |= texUnit->_GenFlags;
+ }
+
+ if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
+ ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
+ }
+
+ ctx->Texture._EnabledCoordUnits = ctx->Texture._EnabledUnits;
+ /* Fragment programs may need texture coordinates but not the
+ * corresponding texture images.
+ */
+ if (ctx->ShaderObjects.CurrentProgram != NULL) {
+ ctx->Texture._EnabledCoordUnits |= (1 << ctx->Const.MaxTextureCoordUnits) - 1;
+ }
+ else if (ctx->FragmentProgram._Enabled) {
+ ctx->Texture._EnabledCoordUnits |=
+ (ctx->FragmentProgram.Current->Base.InputsRead >> FRAG_ATTRIB_TEX0);
+ }
+}
+
+
+void _mesa_update_texture( GLcontext *ctx, GLuint new_state )
+{
+ if (new_state & _NEW_TEXTURE_MATRIX)
+ update_texture_matrices( ctx );
+
+ if (new_state & (_NEW_TEXTURE | _NEW_PROGRAM))
+ update_texture_state( ctx );
+}
+
+
+/**********************************************************************/
+/***** Initialization *****/
+/**********************************************************************/
+
+/**
+ * Allocate the proxy textures for the given context.
+ *
+ * \param ctx the context to allocate proxies for.
+ *
+ * \return GL_TRUE on success, or GL_FALSE on failure
+ *
+ * If run out of memory part way through the allocations, clean up and return
+ * GL_FALSE.
+ */
+static GLboolean
+alloc_proxy_textures( GLcontext *ctx )
+{
+ ctx->Texture.Proxy1D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_1D);
+ if (!ctx->Texture.Proxy1D)
+ goto cleanup;
+
+ ctx->Texture.Proxy2D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_2D);
+ if (!ctx->Texture.Proxy2D)
+ goto cleanup;
+
+ ctx->Texture.Proxy3D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_3D);
+ if (!ctx->Texture.Proxy3D)
+ goto cleanup;
+
+ ctx->Texture.ProxyCubeMap = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_CUBE_MAP_ARB);
+ if (!ctx->Texture.ProxyCubeMap)
+ goto cleanup;
+
+ ctx->Texture.ProxyRect = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_RECTANGLE_NV);
+ if (!ctx->Texture.ProxyRect)
+ goto cleanup;
+
+ return GL_TRUE;
+
+ cleanup:
+ if (ctx->Texture.Proxy1D)
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D);
+ if (ctx->Texture.Proxy2D)
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D);
+ if (ctx->Texture.Proxy3D)
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy3D);
+ if (ctx->Texture.ProxyCubeMap)
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyCubeMap);
+ if (ctx->Texture.ProxyRect)
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyRect);
+ return GL_FALSE;
+}
+
+
+/**
+ * Initialize a texture unit.
+ *
+ * \param ctx GL context.
+ * \param unit texture unit number to be initialized.
+ */
+static void
+init_texture_unit( GLcontext *ctx, GLuint unit )
+{
+ struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+
+ texUnit->EnvMode = GL_MODULATE;
+ ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );
+
+ texUnit->Combine = default_combine_state;
+ texUnit->_EnvMode = default_combine_state;
+ texUnit->_CurrentCombine = & texUnit->_EnvMode;
+
+ texUnit->TexGenEnabled = 0;
+ texUnit->GenModeS = GL_EYE_LINEAR;
+ texUnit->GenModeT = GL_EYE_LINEAR;
+ texUnit->GenModeR = GL_EYE_LINEAR;
+ texUnit->GenModeQ = GL_EYE_LINEAR;
+ texUnit->_GenBitS = TEXGEN_EYE_LINEAR;
+ texUnit->_GenBitT = TEXGEN_EYE_LINEAR;
+ texUnit->_GenBitR = TEXGEN_EYE_LINEAR;
+ texUnit->_GenBitQ = TEXGEN_EYE_LINEAR;
+
+ /* Yes, these plane coefficients are correct! */
+ ASSIGN_4V( texUnit->ObjectPlaneS, 1.0, 0.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->ObjectPlaneT, 0.0, 1.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->ObjectPlaneR, 0.0, 0.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->ObjectPlaneQ, 0.0, 0.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->EyePlaneS, 1.0, 0.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->EyePlaneT, 0.0, 1.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 );
+ ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 );
+
+ texUnit->Current1D = ctx->Shared->Default1D;
+ texUnit->Current2D = ctx->Shared->Default2D;
+ texUnit->Current3D = ctx->Shared->Default3D;
+ texUnit->CurrentCubeMap = ctx->Shared->DefaultCubeMap;
+ texUnit->CurrentRect = ctx->Shared->DefaultRect;
+}
+
+
+/**
+ * Initialize texture state for the given context.
+ */
+GLboolean
+_mesa_init_texture(GLcontext *ctx)
+{
+ GLuint i;
+
+ assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS);
+ assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS);
+
+ /* Effectively bind the default textures to all texture units */
+ ctx->Shared->Default1D->RefCount += MAX_TEXTURE_UNITS;
+ ctx->Shared->Default2D->RefCount += MAX_TEXTURE_UNITS;
+ ctx->Shared->Default3D->RefCount += MAX_TEXTURE_UNITS;
+ ctx->Shared->DefaultCubeMap->RefCount += MAX_TEXTURE_UNITS;
+ ctx->Shared->DefaultRect->RefCount += MAX_TEXTURE_UNITS;
+
+ /* Texture group */
+ ctx->Texture.CurrentUnit = 0; /* multitexture */
+ ctx->Texture._EnabledUnits = 0;
+ for (i=0; i<MAX_TEXTURE_UNITS; i++)
+ init_texture_unit( ctx, i );
+ ctx->Texture.SharedPalette = GL_FALSE;
+ _mesa_init_colortable(&ctx->Texture.Palette);
+
+ _mesa_TexEnvProgramCacheInit( ctx );
+
+ /* Allocate proxy textures */
+ if (!alloc_proxy_textures( ctx ))
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Free dynamically-allocted texture data attached to the given context.
+ */
+void
+_mesa_free_texture_data(GLcontext *ctx)
+{
+ GLuint i;
+
+ /* Free proxy texture objects */
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D );
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D );
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy3D );
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyCubeMap );
+ (ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyRect );
+
+ for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
+ _mesa_free_colortable_data( &ctx->Texture.Unit[i].ColorTable );
+
+ _mesa_TexEnvProgramCacheDestroy( ctx );
+}