-/* $Id: s_readpix.c,v 1.9 2001/03/07 05:06:12 brianp Exp $ */
+/* $Id: s_readpix.c,v 1.12 2001/05/16 20:27:12 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
- *
+ *
* Copyright (C) 1999-2001 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
GLenum type, GLvoid *pixels,
const struct gl_pixelstore_attrib *packing )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLint i, readWidth;
/* error checking */
return;
}
- ASSERT(ctx->Driver.SetReadBuffer);
- (*ctx->Driver.SetReadBuffer)(ctx, ctx->ReadBuffer,
+ ASSERT(swrast->Driver.SetReadBuffer);
+ (*swrast->Driver.SetReadBuffer)(ctx, ctx->ReadBuffer,
ctx->Pixel.DriverReadBuffer);
readWidth = (width > MAX_WIDTH) ? MAX_WIDTH : width;
GLuint index[MAX_WIDTH];
GLvoid *dest;
- (*ctx->Driver.ReadCI32Span)(ctx, readWidth, x, y + i, index);
+ (*swrast->Driver.ReadCI32Span)(ctx, readWidth, x, y + i, index);
dest = _mesa_image_address(packing, pixels, width, height,
GL_COLOR_INDEX, type, 0, i, 0);
&ctx->Pack, ctx->_ImageTransferState);
}
- (*ctx->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer,
+ (*swrast->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer,
ctx->Color.DriverDrawBuffer);
}
GLvoid *pixels,
const struct gl_pixelstore_attrib *packing )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
/* can't do scale, bias, mapping, etc */
if (ctx->_ImageTransferState)
return GL_FALSE;
+ (skipRows * rowLength + skipPixels) * 4;
GLint row;
for (row=0; row<readHeight; row++) {
- (*ctx->Driver.ReadRGBASpan)(ctx, readWidth, srcX, srcY,
+ (*swrast->Driver.ReadRGBASpan)(ctx, readWidth, srcX, srcY,
(GLchan (*)[4]) dest);
if (ctx->DrawBuffer->UseSoftwareAlphaBuffers) {
_mesa_read_alpha_span(ctx, readWidth, srcX, srcY,
GLenum format, GLenum type, GLvoid *pixels,
const struct gl_pixelstore_attrib *packing )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLint readWidth;
- (*ctx->Driver.SetReadBuffer)(ctx, ctx->ReadBuffer, ctx->Pixel.DriverReadBuffer);
+ (*swrast->Driver.SetReadBuffer)(ctx, ctx->ReadBuffer, ctx->Pixel.DriverReadBuffer);
/* Try optimized path first */
if (read_fast_rgba_pixels( ctx, x, y, width, height,
format, type, pixels, packing )) {
- (*ctx->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer, ctx->Color.DriverDrawBuffer);
+ (*swrast->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer, ctx->Color.DriverDrawBuffer);
return; /* done! */
}
}
else {
GLuint index[MAX_WIDTH];
- (*ctx->Driver.ReadCI32Span)(ctx, readWidth, x, y, index);
+ (*swrast->Driver.ReadCI32Span)(ctx, readWidth, x, y, index);
if (ctx->Pixel.IndexShift != 0 || ctx->Pixel.IndexOffset !=0 ) {
_mesa_map_ci(ctx, readWidth, index);
}
}
else {
GLuint index[MAX_WIDTH];
- (*ctx->Driver.ReadCI32Span)(ctx, readWidth, x, y, index);
+ (*swrast->Driver.ReadCI32Span)(ctx, readWidth, x, y, index);
if (ctx->Pixel.IndexShift != 0 || ctx->Pixel.IndexOffset != 0) {
_mesa_map_ci(ctx, readWidth, index);
}
* there. This fixes conformance failures with 16-bit color
* buffers, for example.
*/
- GLfloat rgbaf[MAX_WIDTH][4];
+ DEFMARRAY(GLfloat, rgbaf, MAX_WIDTH, 4); /* mac 32k limitation */
+ CHECKARRAY(rgbaf, return); /* mac 32k limitation */
_mesa_chan_to_float_span(ctx, readWidth,
(CONST GLchan (*)[4]) rgba, rgbaf);
_mesa_pack_float_rgba_span(ctx, readWidth,
(CONST GLfloat (*)[4]) rgbaf,
format, type, dst, packing,
ctx->_ImageTransferState);
+ UNDEFARRAY(rgbaf); /* mac 32k limitation */
}
else {
/* GLubytes are fine */
}
}
- (*ctx->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer, ctx->Color.DriverDrawBuffer);
+ (*swrast->Driver.SetReadBuffer)(ctx, ctx->DrawBuffer, ctx->Color.DriverDrawBuffer);
}
void
_swrast_ReadPixels( GLcontext *ctx,
GLint x, GLint y, GLsizei width, GLsizei height,
- GLenum format, GLenum type,
+ GLenum format, GLenum type,
const struct gl_pixelstore_attrib *pack,
GLvoid *pixels )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
(void) pack;
- if (SWRAST_CONTEXT(ctx)->NewState)
+ if (swrast->NewState)
_swrast_validate_derived( ctx );
+ RENDER_START(swrast,ctx);
+
switch (format) {
case GL_COLOR_INDEX:
read_index_pixels(ctx, x, y, width, height, type, pixels, &ctx->Pack);
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glReadPixels(format)" );
}
+
+ RENDER_FINISH(swrast,ctx);
}