summaryrefslogtreecommitdiff
path: root/src/mesa/main/drawpix.c
diff options
context:
space:
mode:
authorAlex Heck <nesl247@beryl-project.org>2007-03-17 19:55:09 -0400
committerAlex Heck <nesl247@beryl-project.org>2007-03-17 19:55:09 -0400
commit3c464a6f450c7b9e5f35460458e4d37a9be15f6e (patch)
treec98caeee9b16d98fee3db95977a713b25bb7919b /src/mesa/main/drawpix.c
parentd34c1c65bd18eaaae2d1da2a32654916477cb86f (diff)
downloadberyl-mesa-3c464a6f450c7b9e5f35460458e4d37a9be15f6e.tar.gz
beryl-mesa-3c464a6f450c7b9e5f35460458e4d37a9be15f6e.tar.bz2
Added missing filesHEADmaster
Diffstat (limited to 'src/mesa/main/drawpix.c')
-rw-r--r--src/mesa/main/drawpix.c435
1 files changed, 435 insertions, 0 deletions
diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
new file mode 100644
index 0000000..c82abcc
--- /dev/null
+++ b/src/mesa/main/drawpix.c
@@ -0,0 +1,435 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * 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.
+ */
+
+#include "glheader.h"
+#include "imports.h"
+#include "context.h"
+#include "drawpix.h"
+#include "feedback.h"
+#include "framebuffer.h"
+#include "image.h"
+#include "state.h"
+
+
+/**
+ * Do error checking of the format/type parameters to glReadPixels and
+ * glDrawPixels.
+ * \param drawing if GL_TRUE do checking for DrawPixels, else do checking
+ * for ReadPixels.
+ * \return GL_TRUE if error detected, GL_FALSE if no errors
+ */
+static GLboolean
+error_check_format_type(GLcontext *ctx, GLenum format, GLenum type,
+ GLboolean drawing)
+{
+ const char *readDraw = drawing ? "Draw" : "Read";
+
+ if (ctx->Extensions.EXT_packed_depth_stencil
+ && type == GL_UNSIGNED_INT_24_8_EXT
+ && format != GL_DEPTH_STENCIL_EXT) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw);
+ return GL_TRUE;
+ }
+
+ /* basic combinations test */
+ if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "gl%sPixels(format or type)", readDraw);
+ return GL_TRUE;
+ }
+
+ /* additional checks */
+ switch (format) {
+ case GL_RED:
+ case GL_GREEN:
+ case GL_BLUE:
+ case GL_ALPHA:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE_ALPHA:
+ case GL_RGB:
+ case GL_BGR:
+ case GL_RGBA:
+ case GL_BGRA:
+ case GL_ABGR_EXT:
+ if (drawing && !ctx->Visual.rgbMode) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels(drawing RGB pixels into color index buffer)");
+ return GL_TRUE;
+ }
+ if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(no color buffer)");
+ return GL_TRUE;
+ }
+ break;
+ case GL_COLOR_INDEX:
+ if (!drawing && ctx->Visual.rgbMode) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(reading color index format from RGB buffer)");
+ return GL_TRUE;
+ }
+ if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(no color buffer)");
+ return GL_TRUE;
+ }
+ break;
+ case GL_STENCIL_INDEX:
+ if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+ (!drawing && !_mesa_source_buffer_exists(ctx, format))) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no stencil buffer)", readDraw);
+ return GL_TRUE;
+ }
+ break;
+ case GL_DEPTH_COMPONENT:
+ if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+ (!drawing && !_mesa_source_buffer_exists(ctx, format))) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no depth buffer)", readDraw);
+ return GL_TRUE;
+ }
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ if (!ctx->Extensions.EXT_packed_depth_stencil ||
+ type != GL_UNSIGNED_INT_24_8_EXT) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw);
+ return GL_TRUE;
+ }
+ if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) ||
+ (!drawing && !_mesa_source_buffer_exists(ctx, format))) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no depth or stencil buffer)", readDraw);
+ return GL_TRUE;
+ }
+ break;
+ default:
+ /* this should have been caught in _mesa_is_legal_format_type() */
+ _mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);
+ return GL_TRUE;
+ }
+
+ /* no errors */
+ return GL_FALSE;
+}
+
+
+
+#if _HAVE_FULL_GL
+
+/*
+ * Execute glDrawPixels
+ */
+void GLAPIENTRY
+_mesa_DrawPixels( GLsizei width, GLsizei height,
+ GLenum format, GLenum type, const GLvoid *pixels )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
+ return;
+ }
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels (invalid fragment program)");
+ return;
+ }
+
+ if (error_check_format_type(ctx, format, type, GL_TRUE)) {
+ /* found an error */
+ return;
+ }
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glDrawPixels(incomplete framebuffer)" );
+ return;
+ }
+
+ if (!ctx->Current.RasterPosValid) {
+ return;
+ }
+
+ if (ctx->RenderMode == GL_RENDER) {
+ /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
+ GLint x = IROUND(ctx->Current.RasterPos[0]);
+ GLint y = IROUND(ctx->Current.RasterPos[1]);
+ ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
+ &ctx->Unpack, pixels);
+ }
+ else if (ctx->RenderMode == GL_FEEDBACK) {
+ /* Feedback the current raster pos info */
+ FLUSH_CURRENT( ctx, 0 );
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
+ }
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
+ }
+}
+
+
+void GLAPIENTRY
+_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+ GLenum type )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyPixels (invalid fragment program)");
+ return;
+ }
+
+ if (width < 0 || height < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
+ return;
+ }
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
+ ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glCopyPixels(incomplete framebuffer)" );
+ return;
+ }
+
+ if (!_mesa_source_buffer_exists(ctx, type) ||
+ !_mesa_dest_buffer_exists(ctx, type)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyPixels(missing source or dest buffer)");
+ return;
+ }
+
+ if (!ctx->Current.RasterPosValid) {
+ return;
+ }
+
+ if (ctx->RenderMode == GL_RENDER) {
+ /* Round to satisfy conformance tests (matches SGI's OpenGL) */
+ GLint destx = IROUND(ctx->Current.RasterPos[0]);
+ GLint desty = IROUND(ctx->Current.RasterPos[1]);
+ ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
+ type );
+ }
+ else if (ctx->RenderMode == GL_FEEDBACK) {
+ FLUSH_CURRENT( ctx, 0 );
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
+ }
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
+ }
+}
+
+#endif /* _HAVE_FULL_GL */
+
+
+
+void GLAPIENTRY
+_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type, GLvoid *pixels )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glReadPixels(width=%d height=%d)", width, height );
+ return;
+ }
+
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ if (error_check_format_type(ctx, format, type, GL_FALSE)) {
+ /* found an error */
+ return;
+ }
+
+ if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glReadPixels(incomplete framebuffer)" );
+ return;
+ }
+
+ if (!_mesa_source_buffer_exists(ctx, format)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");
+ return;
+ }
+
+ ctx->Driver.ReadPixels(ctx, x, y, width, height,
+ format, type, &ctx->Pack, pixels);
+}
+
+
+
+void GLAPIENTRY
+_mesa_Bitmap( GLsizei width, GLsizei height,
+ GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
+ const GLubyte *bitmap )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
+ return;
+ }
+
+ if (!ctx->Current.RasterPosValid) {
+ return; /* do nothing */
+ }
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBitmap (invalid fragment program)");
+ return;
+ }
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glBitmap(incomplete framebuffer)");
+ return;
+ }
+
+ if (ctx->RenderMode == GL_RENDER) {
+ if (bitmap) {
+ /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
+ GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
+ GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);
+ ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
+ }
+ }
+#if _HAVE_FULL_GL
+ else if (ctx->RenderMode == GL_FEEDBACK) {
+ FLUSH_CURRENT(ctx, 0);
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
+ }
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
+ }
+#endif
+
+ /* update raster position */
+ ctx->Current.RasterPos[0] += xmove;
+ ctx->Current.RasterPos[1] += ymove;
+}
+
+
+
+#if 0 /* experimental */
+/*
+ * Execute glDrawDepthPixelsMESA(). This function accepts both a color
+ * image and depth (Z) image. Rasterization produces fragments with
+ * color and Z taken from these images. This function is intended for
+ * Z-compositing. Normally, this operation requires two glDrawPixels
+ * calls with stencil testing.
+ */
+void GLAPIENTRY
+_mesa_DrawDepthPixelsMESA( GLsizei width, GLsizei height,
+ GLenum colorFormat, GLenum colorType,
+ const GLvoid *colors,
+ GLenum depthType, const GLvoid *depths )
+{
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glDrawDepthPixelsMESA(width or height < 0" );
+ return;
+ }
+
+ if (!ctx->Current.RasterPosValid) {
+ return;
+ }
+
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
+
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glDrawDepthPixelsMESA(incomplete framebuffer)");
+ return;
+ }
+
+ if (ctx->RenderMode == GL_RENDER) {
+ /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
+ GLint x = IROUND(ctx->Current.RasterPos[0]);
+ GLint y = IROUND(ctx->Current.RasterPos[1]);
+ ctx->Driver.DrawDepthPixelsMESA(ctx, x, y, width, height,
+ colorFormat, colorType, colors,
+ depthType, depths, &ctx->Unpack);
+ }
+ else if (ctx->RenderMode == GL_FEEDBACK) {
+ /* Feedback the current raster pos info */
+ FLUSH_CURRENT( ctx, 0 );
+ FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
+ _mesa_feedback_vertex( ctx,
+ ctx->Current.RasterPos,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
+ }
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
+ }
+}
+
+#endif