-/* $Id: drawpix.c,v 1.27 2000/08/16 17:32:42 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.4
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ * Version: 7.1
+ *
+ * Copyright (C) 1999-2008 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
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-
-#ifdef PC_HEADER
-#include "all.h"
-#else
#include "glheader.h"
+#include "imports.h"
+#include "bufferobj.h"
#include "context.h"
#include "drawpix.h"
#include "feedback.h"
+#include "framebuffer.h"
#include "image.h"
-#include "macros.h"
-#include "mem.h"
-#include "mmath.h"
-#include "pixel.h"
-#include "pixeltex.h"
-#include "span.h"
#include "state.h"
-#include "stencil.h"
-#include "texture.h"
-#include "types.h"
-#include "zoom.h"
-#endif
-
-/*
- * Given the dest position, size and skipPixels and skipRows values
- * for a glDrawPixels command, perform clipping of the image bounds
- * so the result lies withing the context's buffer bounds.
- * Return: GL_TRUE if image is ready for drawing
- * GL_FALSE if image was completely clipped away (draw nothing)
- */
-GLboolean
-_mesa_clip_pixelrect(const GLcontext *ctx,
- GLint *destX, GLint *destY,
- GLsizei *width, GLsizei *height,
- GLint *skipPixels, GLint *skipRows)
-{
- const GLframebuffer *buffer = ctx->DrawBuffer;
-
- /* left clipping */
- if (*destX < buffer->Xmin) {
- *skipPixels += (buffer->Xmin - *destX);
- *width -= (buffer->Xmin - *destX);
- *destX = buffer->Xmin;
- }
- /* right clipping */
- if (*destX + *width > buffer->Xmax)
- *width -= (*destX + *width - buffer->Xmax - 1);
-
- if (*width <= 0)
- return GL_FALSE;
-
- /* bottom clipping */
- if (*destY < buffer->Ymin) {
- *skipRows += (buffer->Ymin - *destY);
- *height -= (buffer->Ymin - *destY);
- *destY = buffer->Ymin;
- }
- /* top clipping */
- if (*destY + *height > buffer->Ymax)
- *height -= (*destY + *height - buffer->Ymax - 1);
-
- if (*height <= 0)
- return GL_TRUE;
-
- return GL_TRUE;
-}
-
-
-
-/*
- * Try to do a fast and simple RGB(a) glDrawPixels.
- * Return: GL_TRUE if success, GL_FALSE if slow path must be used instead
+/**
+ * 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
-simple_DrawPixels( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height, GLenum format, GLenum type,
- const GLvoid *pixels )
+error_check_format_type(GLcontext *ctx, GLenum format, GLenum type,
+ GLboolean drawing)
{
- const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
- GLubyte rgb[MAX_WIDTH][3];
- GLubyte rgba[MAX_WIDTH][4];
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, "glDrawPixels",
- GL_FALSE);
+ const char *readDraw = drawing ? "Draw" : "Read";
-
- if (!ctx->Current.RasterPosValid) {
- /* no-op */
+ 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;
}
- if ((ctx->RasterMask&(~(SCISSOR_BIT|WINCLIP_BIT)))==0
- && !ctx->Pixel.ScaleOrBiasRGBA
- && !ctx->Pixel.ScaleOrBiasRGBApcm
- && ctx->ColorMatrix.type == MATRIX_IDENTITY
- && !ctx->Pixel.ColorTableEnabled
- && !ctx->Pixel.PostColorMatrixColorTableEnabled
- && !ctx->Pixel.PostConvolutionColorTableEnabled
- && !ctx->Pixel.MinMaxEnabled
- && !ctx->Pixel.HistogramEnabled
- && ctx->Pixel.IndexShift==0 && ctx->Pixel.IndexOffset==0
- && ctx->Pixel.MapColorFlag==0
- && ctx->Texture.ReallyEnabled == 0
- && unpack->Alignment==1
- && !unpack->SwapBytes
- && !unpack->LsbFirst) {
-
- GLint destX = x;
- GLint destY = y;
- GLint drawWidth = width; /* actual width drawn */
- GLint drawHeight = height; /* actual height drawn */
- GLint skipPixels = unpack->SkipPixels;
- GLint skipRows = unpack->SkipRows;
- GLint rowLength;
- GLdepth zSpan[MAX_WIDTH]; /* only used when zooming */
- GLint zoomY0;
-
- if (unpack->RowLength > 0)
- rowLength = unpack->RowLength;
- else
- rowLength = width;
-
- /* If we're not using pixel zoom then do all clipping calculations
- * now. Otherwise, we'll let the gl_write_zoomed_*_span() functions
- * handle the clipping.
- */
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* horizontal clipping */
- if (destX < ctx->DrawBuffer->Xmin) {
- skipPixels += (ctx->DrawBuffer->Xmin - destX);
- drawWidth -= (ctx->DrawBuffer->Xmin - destX);
- destX = ctx->DrawBuffer->Xmin;
- }
- if (destX + drawWidth > ctx->DrawBuffer->Xmax)
- drawWidth -= (destX + drawWidth - ctx->DrawBuffer->Xmax - 1);
- if (drawWidth <= 0)
- return GL_TRUE;
-
- /* vertical clipping */
- if (destY < ctx->DrawBuffer->Ymin) {
- skipRows += (ctx->DrawBuffer->Ymin - destY);
- drawHeight -= (ctx->DrawBuffer->Ymin - destY);
- destY = ctx->DrawBuffer->Ymin;
- }
- if (destY + drawHeight > ctx->DrawBuffer->Ymax)
- drawHeight -= (destY + drawHeight - ctx->DrawBuffer->Ymax - 1);
- if (drawHeight <= 0)
- 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;
+ }
- zoomY0 = 0; /* not used - silence compiler warning */
+ /* 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;
}
- else {
- /* setup array of fragment Z value to pass to zoom function */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->Visual->DepthMaxF);
- GLint i;
- assert(drawWidth < MAX_WIDTH);
- for (i=0; i<drawWidth; i++)
- zSpan[i] = z;
-
- /* save Y value of first row */
- zoomY0 = (GLint) (ctx->Current.RasterPos[1] + 0.5F);
+ if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(no color buffer)");
+ return GL_TRUE;
}
-
-
- /*
- * Ready to draw!
- * The window region at (destX, destY) of size (drawWidth, drawHeight)
- * will be written to.
- * We'll take pixel data from buffer pointed to by "pixels" but we'll
- * skip "skipRows" rows and skip "skipPixels" pixels/row.
- */
-
- if (format==GL_RGBA && type==GL_UNSIGNED_BYTE) {
- if (ctx->Visual->RGBAflag) {
- GLubyte *src = (GLubyte *) pixels
- + (skipRows * rowLength + skipPixels) * 4;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- (*ctx->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (void *) src, NULL);
- src += rowLength * 4;
- destY++;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- gl_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, (void *) src, zoomY0);
- src += rowLength * 4;
- destY++;
- }
- }
- }
+ 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;
}
- else if (format==GL_RGB && type==GL_UNSIGNED_BYTE) {
- if (ctx->Visual->RGBAflag) {
- GLubyte *src = (GLubyte *) pixels
- + (skipRows * rowLength + skipPixels) * 3;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- GLint row;
- for (row=0; row<drawHeight; row++) {
- (*ctx->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (void *) src, NULL);
- src += rowLength * 3;
- destY++;
- }
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- gl_write_zoomed_rgb_span(ctx, drawWidth, destX, destY,
- zSpan, (void *) src, zoomY0);
- src += rowLength * 3;
- destY++;
- }
- }
- }
+ if (!drawing && !_mesa_dest_buffer_exists(ctx, GL_COLOR)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(no color buffer)");
return GL_TRUE;
}
- else if (format==GL_LUMINANCE && type==GL_UNSIGNED_BYTE) {
- if (ctx->Visual->RGBAflag) {
- GLubyte *src = (GLubyte *) pixels
- + (skipRows * rowLength + skipPixels);
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- assert(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgb[i][0] = src[i];
- rgb[i][1] = src[i];
- rgb[i][2] = src[i];
- }
- (*ctx->Driver.WriteRGBSpan)(ctx, drawWidth, destX, destY,
- (void *) rgb, NULL);
- src += rowLength;
- destY++;
- }
- }
- else {
- /* with zooming */
- GLint row;
- assert(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgb[i][0] = src[i];
- rgb[i][1] = src[i];
- rgb[i][2] = src[i];
- }
- gl_write_zoomed_rgb_span(ctx, drawWidth, destX, destY,
- zSpan, (void *) rgb, zoomY0);
- src += rowLength;
- destY++;
- }
- }
- }
+ 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;
}
- else if (format==GL_LUMINANCE_ALPHA && type==GL_UNSIGNED_BYTE) {
- if (ctx->Visual->RGBAflag) {
- GLubyte *src = (GLubyte *) pixels
- + (skipRows * rowLength + skipPixels)*2;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- assert(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLint i;
- GLubyte *ptr = src;
- for (i=0;i<drawWidth;i++) {
- rgba[i][0] = *ptr;
- rgba[i][1] = *ptr;
- rgba[i][2] = *ptr++;
- rgba[i][3] = *ptr++;
- }
- (*ctx->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (void *) rgba, NULL);
- src += rowLength*2;
- destY++;
- }
- }
- else {
- /* with zooming */
- GLint row;
- assert(drawWidth < MAX_WIDTH);
- for (row=0; row<drawHeight; row++) {
- GLubyte *ptr = src;
- GLint i;
- for (i=0;i<drawWidth;i++) {
- rgba[i][0] = *ptr;
- rgba[i][1] = *ptr;
- rgba[i][2] = *ptr++;
- rgba[i][3] = *ptr++;
- }
- gl_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, (void *) rgba, zoomY0);
- src += rowLength*2;
- destY++;
- }
- }
- }
+ break;
+ case GL_DEPTH_COMPONENT:
+ if (!drawing && !_mesa_source_buffer_exists(ctx, format)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "gl%sPixels(no depth buffer)", readDraw);
return GL_TRUE;
}
- else if (format==GL_COLOR_INDEX && type==GL_UNSIGNED_BYTE) {
- GLubyte *src = (GLubyte *) pixels + skipRows * rowLength + skipPixels;
- if (ctx->Visual->RGBAflag) {
- /* convert CI data to RGBA */
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- assert(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
- (*ctx->Driver.WriteRGBASpan)(ctx, drawWidth, destX, destY,
- (const GLubyte (*)[4])rgba,
- NULL);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
- }
- else {
- /* with zooming */
- GLint row;
- for (row=0; row<drawHeight; row++) {
- assert(drawWidth < MAX_WIDTH);
- _mesa_map_ci8_to_rgba(ctx, drawWidth, src, rgba);
- gl_write_zoomed_rgba_span(ctx, drawWidth, destX, destY,
- zSpan, (void *) rgba, zoomY0);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
- }
- }
- else {
- /* write CI data to CI frame buffer */
- GLint row;
- if (ctx->Pixel.ZoomX==1.0F && ctx->Pixel.ZoomY==1.0F) {
- /* no zooming */
- for (row=0; row<drawHeight; row++) {
- (*ctx->Driver.WriteCI8Span)(ctx, drawWidth, destX, destY,
- src, NULL);
- src += rowLength;
- destY++;
- }
- return GL_TRUE;
- }
- else {
- /* with zooming */
- return GL_FALSE;
- }
- }
+ 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;
}
- else {
- /* can't handle this pixel format and/or data type here */
- return GL_FALSE;
+ 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;
}
- /* can't do a simple draw, have to use slow path */
+ /* no errors */
return GL_FALSE;
}
+
+#if _HAVE_FULL_GL
/*
- * Do glDrawPixels of index pixels.
+ * Execute glDrawPixels
*/
-static void
-draw_index_pixels( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+void GLAPIENTRY
+_mesa_DrawPixels( GLsizei width, GLsizei height,
+ GLenum format, GLenum type, const GLvoid *pixels )
{
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLint row, drawWidth;
- GLdepth zspan[MAX_WIDTH];
-
- drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
-
- /* Fragment depth values */
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- GLdepth zval = (GLdepth) (ctx->Current.RasterPos[2] * ctx->Visual->DepthMaxF);
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- zspan[i] = zval;
- }
+ 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;
}
- /*
- * General solution
- */
- for (row = 0; row < height; row++, y++) {
- GLuint indexes[MAX_WIDTH];
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, GL_UNSIGNED_INT, indexes,
- type, source, &ctx->Unpack, GL_TRUE);
- if (zoom) {
- gl_write_zoomed_index_span(ctx, drawWidth, x, y, zspan, indexes, desty);
- }
- else {
- gl_write_index_span(ctx, drawWidth, x, y, zspan, indexes, GL_BITMAP);
+ 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]);
+
+ if (ctx->Unpack.BufferObj->Name) {
+ /* unpack from PBO */
+ if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
+ format, type, pixels)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels(invalid PBO access)");
+ return;
+ }
+ if (ctx->Unpack.BufferObj->Pointer) {
+ /* buffer is mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glDrawPixels(PBO is mapped)");
+ return;
+ }
}
+
+ 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. */
}
}
-
-/*
- * Do glDrawPixels of stencil image. The image datatype may either
- * be GLubyte or GLbitmap.
- */
-static void
-draw_stencil_pixels( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+void GLAPIENTRY
+_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
+ GLenum type )
{
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLboolean shift_or_offset = ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset;
- const GLint desty = y;
- GLint row, drawWidth;
-
- if (type != GL_BYTE &&
- type != GL_UNSIGNED_BYTE &&
- type != GL_SHORT &&
- type != GL_UNSIGNED_SHORT &&
- type != GL_INT &&
- type != GL_UNSIGNED_INT &&
- type != GL_FLOAT &&
- type != GL_BITMAP) {
- gl_error( ctx, GL_INVALID_ENUM, "glDrawPixels(stencil 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;
}
- drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
+ if (width < 0 || height < 0) {
+ _mesa_error(ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)");
+ return;
+ }
- for (row = 0; row < height; row++, y++) {
- GLstencil values[MAX_WIDTH];
- GLenum destType = (sizeof(GLstencil) == sizeof(GLubyte))
- ? GL_UNSIGNED_BYTE : GL_UNSIGNED_SHORT;
- const GLvoid *source = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_COLOR_INDEX, type, 0, row, 0);
- _mesa_unpack_index_span(ctx, drawWidth, destType, values,
- type, source, &ctx->Unpack, GL_FALSE);
- if (shift_or_offset) {
- _mesa_shift_and_offset_stencil( ctx, drawWidth, values );
- }
- if (ctx->Pixel.MapStencilFlag) {
- _mesa_map_stencil( ctx, drawWidth, values );
- }
+ 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 (zoom) {
- gl_write_zoomed_stencil_span( ctx, (GLuint) drawWidth, x, y,
- values, desty );
- }
- else {
- _mesa_write_stencil_span( ctx, (GLuint) drawWidth, x, y, values );
- }
+ 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 */
-/*
- * Do a glDrawPixels of depth values.
- */
-static void
-draw_depth_pixels( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum type, const GLvoid *pixels )
+
+void GLAPIENTRY
+_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
+ GLenum format, GLenum type, GLvoid *pixels )
{
- const GLboolean bias_or_scale = ctx->Pixel.DepthBias!=0.0 || ctx->Pixel.DepthScale!=1.0;
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLubyte rgba[MAX_WIDTH][4];
- GLuint ispan[MAX_WIDTH];
- GLint drawWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
-
- if (type != GL_BYTE
- && type != GL_UNSIGNED_BYTE
- && type != GL_SHORT
- && type != GL_UNSIGNED_SHORT
- && type != GL_INT
- && type != GL_UNSIGNED_INT
- && type != GL_FLOAT) {
- gl_error(ctx, GL_INVALID_ENUM, "glDrawPixels(type)");
+ 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;
}
- /* Colors or indexes */
- if (ctx->Visual->RGBAflag) {
- GLint r = (GLint) (ctx->Current.RasterColor[0] * 255.0F);
- GLint g = (GLint) (ctx->Current.RasterColor[1] * 255.0F);
- GLint b = (GLint) (ctx->Current.RasterColor[2] * 255.0F);
- GLint a = (GLint) (ctx->Current.RasterColor[3] * 255.0F);
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- rgba[i][RCOMP] = r;
- rgba[i][GCOMP] = g;
- rgba[i][BCOMP] = b;
- rgba[i][ACOMP] = a;
- }
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ if (error_check_format_type(ctx, format, type, GL_FALSE)) {
+ /* found an error */
+ return;
}
- else {
- GLint i;
- for (i = 0; i < drawWidth; i++) {
- ispan[i] = ctx->Current.RasterIndex;
- }
+
+ if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glReadPixels(incomplete framebuffer)" );
+ return;
}
- if (type==GL_UNSIGNED_SHORT && sizeof(GLdepth)==sizeof(GLushort)
- && !bias_or_scale && !zoom && ctx->Visual->RGBAflag) {
- /* Special case: directly write 16-bit depth values */
- GLint row;
- for (row = 0; row < height; row++, y++) {
- GLdepth zspan[MAX_WIDTH];
- const GLushort *zptr = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_DEPTH_COMPONENT, type, 0, row, 0);
- GLint i;
- for (i = 0; i < width; i++)
- zspan[i] = zptr[i];
- gl_write_rgba_span( ctx, width, x, y, zspan, rgba, GL_BITMAP );
- }
+ if (!_mesa_source_buffer_exists(ctx, format)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)");
+ return;
}
- else if (type==GL_UNSIGNED_INT && ctx->Visual->DepthBits == 32
- && !bias_or_scale && !zoom && ctx->Visual->RGBAflag) {
- /* Special case: directly write 32-bit depth values */
- GLint row;
- for (row = 0; row < height; row++, y++) {
- const GLuint *zptr = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_DEPTH_COMPONENT, type, 0, row, 0);
- gl_write_rgba_span( ctx, width, x, y, zptr, rgba, GL_BITMAP );
+
+ if (ctx->Pack.BufferObj->Name) {
+ if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1,
+ format, type, pixels)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glReadPixels(invalid PBO access)");
+ return;
}
- }
- else {
- /* General case */
- GLint row;
- for (row = 0; row < height; row++, y++) {
- GLdepth zspan[MAX_WIDTH];
- const GLvoid *src = _mesa_image_address(&ctx->Unpack,
- pixels, width, height, GL_DEPTH_COMPONENT, type, 0, row, 0);
- _mesa_unpack_depth_span( ctx, drawWidth, zspan, type, src,
- &ctx->Unpack, GL_TRUE );
- if (ctx->Visual->RGBAflag) {
- if (zoom) {
- gl_write_zoomed_rgba_span(ctx, width, x, y, zspan,
- (const GLubyte (*)[4])rgba, desty);
- }
- else {
- gl_write_rgba_span(ctx, width, x, y, zspan, rgba, GL_BITMAP);
- }
- }
- else {
- if (zoom) {
- gl_write_zoomed_index_span(ctx, width, x, y, zspan,
- ispan, GL_BITMAP);
- }
- else {
- gl_write_index_span(ctx, width, x, y, zspan, ispan, GL_BITMAP);
- }
- }
+ if (ctx->Pack.BufferObj->Pointer) {
+ /* buffer is mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)");
+ return;
}
}
+
+ ctx->Driver.ReadPixels(ctx, x, y, width, height,
+ format, type, &ctx->Pack, pixels);
}
-/*
- * Do glDrawPixels of RGBA pixels.
- */
-static void
-draw_rgba_pixels( GLcontext *ctx, GLint x, GLint y,
- GLsizei width, GLsizei height,
- GLenum format, GLenum type, const GLvoid *pixels )
+
+void GLAPIENTRY
+_mesa_Bitmap( GLsizei width, GLsizei height,
+ GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
+ const GLubyte *bitmap )
{
- const struct gl_pixelstore_attrib *unpack = &ctx->Unpack;
- const GLboolean zoom = ctx->Pixel.ZoomX!=1.0 || ctx->Pixel.ZoomY!=1.0;
- const GLint desty = y;
- GLdepth zspan[MAX_WIDTH];
- GLboolean quickDraw;
-
- /* Try an optimized glDrawPixels first */
- if (simple_DrawPixels(ctx, x, y, width, height, format, type, pixels))
+ 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;
+ }
- /* Fragment depth values */
- if (ctx->Depth.Test || ctx->Fog.Enabled) {
- /* fill in array of z values */
- GLdepth z = (GLdepth) (ctx->Current.RasterPos[2] * ctx->Visual->DepthMaxF);
- GLint i;
- for (i=0;i<width;i++) {
- zspan[i] = z;
- }
+ if (!ctx->Current.RasterPosValid) {
+ return; /* do nothing */
}
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
- if (ctx->RasterMask == 0 && !zoom
- && x >= 0 && y >= 0
- && x + width <= ctx->DrawBuffer->Width
- && y + height <= ctx->DrawBuffer->Height) {
- quickDraw = GL_TRUE;
+ if (ctx->FragmentProgram.Enabled && !ctx->FragmentProgram._Enabled) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBitmap (invalid fragment program)");
+ return;
}
- else {
- quickDraw = GL_FALSE;
- }
-
- /*
- * General solution
- */
- {
- GLubyte rgba[MAX_WIDTH][4];
- GLint row;
- if (width > MAX_WIDTH)
- width = MAX_WIDTH;
- for (row = 0; row < height; row++, y++) {
- const GLvoid *source = _mesa_image_address(unpack,
- pixels, width, height, format, type, 0, row, 0);
- _mesa_unpack_ubyte_color_span(ctx, width, GL_RGBA, (void*) rgba,
- format, type, source, unpack, GL_TRUE);
- if ((ctx->Pixel.MinMaxEnabled && ctx->MinMax.Sink) ||
- (ctx->Pixel.HistogramEnabled && ctx->Histogram.Sink))
- continue;
-
- if (ctx->Texture.ReallyEnabled && ctx->Pixel.PixelTextureEnabled) {
- GLfloat s[MAX_WIDTH], t[MAX_WIDTH], r[MAX_WIDTH], q[MAX_WIDTH];
- GLubyte primary_rgba[MAX_WIDTH][4];
- GLuint unit;
- /* XXX not sure how multitexture is supposed to work here */
-
- MEMCPY(primary_rgba, rgba, 4 * width * sizeof(GLubyte));
-
- for (unit = 0; unit < MAX_TEXTURE_UNITS; unit++) {
- _mesa_pixeltexgen(ctx, width, (const GLubyte (*)[4]) rgba,
- s, t, r, q);
- gl_texture_pixels(ctx, unit, width, s, t, r, NULL,
- primary_rgba, rgba);
- }
- }
- if (quickDraw) {
- (*ctx->Driver.WriteRGBASpan)( ctx, width, x, y,
- (CONST GLubyte (*)[]) rgba, NULL);
- }
- else if (zoom) {
- gl_write_zoomed_rgba_span( ctx, width, x, y, zspan,
- (CONST GLubyte (*)[]) rgba, desty );
+ 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) {
+ /* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
+ const GLfloat epsilon = 0.0001;
+ GLint x = IFLOOR(ctx->Current.RasterPos[0] + epsilon - xorig);
+ GLint y = IFLOOR(ctx->Current.RasterPos[1] + epsilon - yorig);
+
+ if (ctx->Unpack.BufferObj->Name) {
+ /* unpack from PBO */
+ if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1,
+ GL_COLOR_INDEX, GL_BITMAP,
+ (GLvoid *) bitmap)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glBitmap(invalid PBO access)");
+ return;
}
- else {
- gl_write_rgba_span( ctx, (GLuint) width, x, y, zspan, rgba, GL_BITMAP);
+ if (ctx->Unpack.BufferObj->Pointer) {
+ /* buffer is mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)");
+ return;
}
}
+
+ 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 glDrawPixels
+ * 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
-_mesa_DrawPixels( GLsizei width, GLsizei height,
- GLenum format, GLenum type, const GLvoid *pixels )
+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, "glDrawPixels");
-
- if (ctx->RenderMode==GL_RENDER) {
- GLint x, y;
- if (!pixels || !ctx->Current.RasterPosValid) {
- return;
- }
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
- if (ctx->NewState) {
- gl_update_state(ctx);
- }
+ if (width < 0 || height < 0) {
+ _mesa_error( ctx, GL_INVALID_VALUE,
+ "glDrawDepthPixelsMESA(width or height < 0" );
+ return;
+ }
- x = (GLint) (ctx->Current.RasterPos[0] + 0.5F);
- y = (GLint) (ctx->Current.RasterPos[1] + 0.5F);
+ if (!ctx->Current.RasterPosValid) {
+ return;
+ }
- ctx->OcclusionResult = GL_TRUE;
+ if (ctx->NewState) {
+ _mesa_update_state(ctx);
+ }
- /* see if device driver can do the drawpix */
- if (ctx->Driver.DrawPixels
- && (*ctx->Driver.DrawPixels)(ctx, x, y, width, height, format, type,
- &ctx->Unpack, pixels)) {
- return;
- }
+ if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+ _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+ "glDrawDepthPixelsMESA(incomplete framebuffer)");
+ return;
+ }
- switch (format) {
- case GL_STENCIL_INDEX:
- draw_stencil_pixels( ctx, x, y, width, height, type, pixels );
- break;
- case GL_DEPTH_COMPONENT:
- draw_depth_pixels( ctx, x, y, width, height, type, pixels );
- break;
- case GL_COLOR_INDEX:
- if (ctx->Visual->RGBAflag)
- draw_rgba_pixels(ctx, x,y, width, height, format, type, pixels);
- else
- draw_index_pixels(ctx, x, y, width, height, type, pixels);
- break;
- 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:
- draw_rgba_pixels(ctx, x, y, width, height, format, type, pixels);
- break;
- default:
- gl_error( ctx, GL_INVALID_ENUM, "glDrawPixels(format)" );
- 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) {
- if (ctx->Current.RasterPosValid) {
- GLfloat color[4];
- GLfloat texcoord[4], invq;
- UBYTE_RGBA_TO_FLOAT_RGBA(color, ctx->Current.ByteColor);
- 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 );
- gl_feedback_vertex( ctx,
+ 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.Index, texcoord );
- }
+ ctx->Current.RasterColor,
+ ctx->Current.RasterIndex,
+ ctx->Current.RasterTexCoords[0] );
}
- else if (ctx->RenderMode==GL_SELECT) {
- if (ctx->Current.RasterPosValid) {
- gl_update_hitflag( ctx, ctx->Current.RasterPos[2] );
- }
+ else {
+ ASSERT(ctx->RenderMode == GL_SELECT);
+ /* Do nothing. See OpenGL Spec, Appendix B, Corollary 6. */
}
}
+#endif
projects / mesa.git / blobdiff