-/* $Id: drawpix.c,v 1.54 2001/06/18 17:26:08 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.5
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 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"),
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
-#include "colormac.h"
+#include "imports.h"
#include "context.h"
#include "drawpix.h"
#include "feedback.h"
-#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
+#include "image.h"
#include "state.h"
-#include "mtypes.h"
-#endif
+/**
+ * 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";
+ struct gl_framebuffer *fb = drawing ? ctx->DrawBuffer : ctx->ReadBuffer;
+
+ 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;
+ }
+ 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;
+ }
+ break;
+ case GL_STENCIL_INDEX:
+ if (fb->Visual.stencilBits == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no stencil buffer)", readDraw);
+ return GL_TRUE;
+ }
+ break;
+ case GL_DEPTH_COMPONENT:
+ if (fb->Visual.depthBits == 0) {
+ _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 (fb->Visual.depthBits == 0 || fb->Visual.stencilBits == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no depth or stencil buffer)", readDraw);
+ return GL_TRUE;
+ }
+ ASSERT(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
+ ASSERT(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
+ 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
+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 (ctx->RenderMode==GL_RENDER) {
- GLint x, y;
- if (!pixels || !ctx->Current.RasterPosValid) {
- return;
- }
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels (invalid fragment program)");
+ return;
+ }
- if (ctx->NewState) {
- _mesa_update_state(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 (error_check_format_type(ctx, format, type, GL_TRUE)) {
+ /* found an error */
+ return;
+ }
- x = IROUND(ctx->Current.RasterPos[0]);
- y = IROUND(ctx->Current.RasterPos[1]);
+ 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;
+ }
- ctx->OcclusionResult = GL_TRUE;
+ 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) {
- if (ctx->Current.RasterPosValid) {
- GLfloat texcoord[4], invq;
-
- FLUSH_CURRENT(ctx, 0);
- invq = 1.0F / ctx->Current.Texcoord[0][3];
- texcoord[0] = ctx->Current.Texcoord[0][0] * invq;
- texcoord[1] = ctx->Current.Texcoord[0][1] * invq;
- texcoord[2] = ctx->Current.Texcoord[0][2] * invq;
- texcoord[3] = ctx->Current.Texcoord[0][3];
- FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
- _mesa_feedback_vertex( ctx,
- ctx->Current.RasterPos,
- ctx->Current.Color,
- ctx->Current.Index,
- texcoord );
- }
+ 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);
}
- else if (ctx->RenderMode==GL_SELECT) {
- if (ctx->Current.RasterPosValid) {
- _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+
+ 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;
+ }
+
+ switch (type) {
+ case GL_COLOR:
+ /* OK */
+ break;
+ case GL_DEPTH:
+ if (ctx->DrawBuffer->Visual.depthBits == 0 ||
+ ctx->ReadBuffer->Visual.depthBits == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyPixels(no depth buffer)");
+ return;
+ }
+ break;
+ case GL_STENCIL:
+ if (ctx->DrawBuffer->Visual.stencilBits == 0 ||
+ ctx->ReadBuffer->Visual.stencilBits == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyPixels(no stencil buffer)");
+ return;
}
+ break;
+ case GL_DEPTH_STENCIL_EXT:
+ if (!ctx->Extensions.EXT_packed_depth_stencil) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels");
+ return;
+ }
+ if (ctx->DrawBuffer->Visual.depthBits == 0 ||
+ ctx->ReadBuffer->Visual.depthBits == 0 ||
+ ctx->DrawBuffer->Visual.stencilBits == 0 ||
+ ctx->ReadBuffer->Visual.stencilBits == 0) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glCopyPixels(no depth or stencil buffer)");
+ return;
+ }
+ break;
+ default:
+ _mesa_error(ctx, GL_INVALID_ENUM, "glCopyPixels");
+ 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 (!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
+void GLAPIENTRY
_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
+ const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- if (!pixels) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
+ 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 (!rb) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");
+ return;
+ }
+
ctx->Driver.ReadPixels(ctx, x, y, width, height,
format, type, &ctx->Pack, pixels);
-
}
-void
-_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
- GLenum type )
+void GLAPIENTRY
+_mesa_Bitmap( GLsizei width, GLsizei height,
+ GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
+ const GLubyte *bitmap )
{
GET_CURRENT_CONTEXT(ctx);
- GLint destx, desty;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBitmap (invalid fragment program)");
+ return;
+ }
+
if (width < 0 || height < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels" );
+ _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->RenderMode==GL_RENDER) {
- /* Destination of copy: */
- if (!ctx->Current.RasterPosValid) {
- return;
- }
- destx = IROUND(ctx->Current.RasterPos[0]);
- desty = IROUND(ctx->Current.RasterPos[1]);
-
- ctx->OcclusionResult = GL_TRUE;
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glBitmap(incomplete framebuffer)");
+ return;
+ }
- ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
- type );
+ if (ctx->RenderMode == GL_RENDER) {
+ /* 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_COPY_PIXEL_TOKEN );
- _mesa_feedback_vertex( ctx,
- ctx->Current.RasterPos,
- ctx->Current.Color,
- ctx->Current.Index,
- ctx->Current.Texcoord[0] );
+ 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 if (ctx->RenderMode == GL_SELECT) {
- _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+ 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;
}
-void
-_mesa_Bitmap( GLsizei width, GLsizei height,
- GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
- const GLubyte *bitmap )
+#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);
-
- /* Error checking */
if (width < 0 || height < 0) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap" );
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glDrawDepthPixelsMESA(width or height < 0" );
return;
}
- if (ctx->Current.RasterPosValid == GL_FALSE) {
- return; /* do nothing */
+ if (!ctx->Current.RasterPosValid) {
+ return;
}
- if (ctx->RenderMode==GL_RENDER) {
- if (bitmap) {
- GLint x = (GLint) ( (ctx->Current.RasterPos[0] - xorig) + 0.0F );
- GLint y = (GLint) ( (ctx->Current.RasterPos[1] - yorig) + 0.0F );
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
- 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;
+ }
- ctx->OcclusionResult = GL_TRUE;
- ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
- }
+ 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) {
- GLfloat color[4], texcoord[4], invq;
-
- color[0] = ctx->Current.RasterColor[0];
- color[1] = ctx->Current.RasterColor[1];
- color[2] = ctx->Current.RasterColor[2];
- color[3] = ctx->Current.RasterColor[3];
- if (ctx->Current.Texcoord[0][3] == 0.0)
- invq = 1.0F;
- else
- invq = 1.0F / ctx->Current.RasterTexCoord[3];
- texcoord[0] = ctx->Current.RasterTexCoord[0] * invq;
- texcoord[1] = ctx->Current.RasterTexCoord[1] * invq;
- texcoord[2] = ctx->Current.RasterTexCoord[2] * invq;
- texcoord[3] = ctx->Current.RasterTexCoord[3];
- FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
+ 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,
- color, ctx->Current.RasterIndex, texcoord );
+ ctx->Current.RasterPos,
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
}
- else if (ctx->RenderMode==GL_SELECT) {
- /* Bitmaps don't generate selection hits. See appendix B of 1.1 spec. */
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
}
-
- /* update raster position */
- ctx->Current.RasterPos[0] += xmove;
- ctx->Current.RasterPos[1] += ymove;
}
+
+#endif
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