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mesa: meta functions for glCopyColorTable, glCopyConvolutionFilter, etc

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This commit is contained in:
Brian Paul
2009-09-19 16:32:42 -06:00
parent dc3839ef3d
commit 3e5a35269b
2 changed files with 141 additions and 0 deletions
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src/mesa/drivers/common/meta.c
+122
View File
@@ -38,6 +38,7 @@
#include "main/blend.h"
#include "main/bufferobj.h"
#include "main/buffers.h"
#include "main/colortab.h"
#include "main/convolve.h"
#include "main/depth.h"
#include "main/enable.h"
@@ -2365,3 +2366,124 @@ _mesa_meta_CopyTexSubImage3D(GLcontext *ctx, GLenum target, GLint level,
copy_tex_sub_image(ctx, 3, target, level, xoffset, yoffset, zoffset,
x, y, width, height);
}
void
_mesa_meta_CopyColorTable(GLcontext *ctx,
GLenum target, GLenum internalformat,
GLint x, GLint y, GLsizei width)
{
GLfloat *buf;
buf = (GLfloat *) _mesa_malloc(width * 4 * sizeof(GLfloat));
if (!buf) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorTable");
return;
}
/*
* Read image from framebuffer (disable pixel transfer ops)
*/
_mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
ctx->Driver.ReadPixels(ctx, x, y, width, 1,
GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
_mesa_ColorTable(target, internalformat, width, GL_RGBA, GL_FLOAT, buf);
_mesa_meta_end(ctx);
_mesa_free(buf);
}
void
_mesa_meta_CopyColorSubTable(GLcontext *ctx,GLenum target, GLsizei start,
GLint x, GLint y, GLsizei width)
{
GLfloat *buf;
buf = (GLfloat *) _mesa_malloc(width * 4 * sizeof(GLfloat));
if (!buf) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyColorSubTable");
return;
}
/*
* Read image from framebuffer (disable pixel transfer ops)
*/
_mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
ctx->Driver.ReadPixels(ctx, x, y, width, 1,
GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
_mesa_ColorSubTable(target, start, width, GL_RGBA, GL_FLOAT, buf);
_mesa_meta_end(ctx);
_mesa_free(buf);
}
void
_mesa_meta_CopyConvolutionFilter1D(GLcontext *ctx, GLenum target,
GLenum internalFormat,
GLint x, GLint y, GLsizei width)
{
GLfloat *buf;
buf = (GLfloat *) _mesa_malloc(width * 4 * sizeof(GLfloat));
if (!buf) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyConvolutionFilter2D");
return;
}
/*
* Read image from framebuffer (disable pixel transfer ops)
*/
_mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
_mesa_update_state(ctx);
ctx->Driver.ReadPixels(ctx, x, y, width, 1,
GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
_mesa_ConvolutionFilter1D(target, internalFormat, width,
GL_RGBA, GL_FLOAT, buf);
_mesa_meta_end(ctx);
_mesa_free(buf);
}
void
_mesa_meta_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
GLenum internalFormat, GLint x, GLint y,
GLsizei width, GLsizei height)
{
GLfloat *buf;
if (!ctx->ReadBuffer->_ColorReadBuffer) {
/* no readbuffer - OK */
return;
}
buf = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
if (!buf) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyConvolutionFilter2D");
return;
}
/*
* Read image from framebuffer (disable pixel transfer ops)
*/
_mesa_meta_begin(ctx, META_PIXEL_STORE | META_PIXEL_TRANSFER);
_mesa_update_state(ctx);
ctx->Driver.ReadPixels(ctx, x, y, width, height,
GL_RGBA, GL_FLOAT, &ctx->Pack, buf);
_mesa_ConvolutionFilter2D(target, internalFormat, width, height,
GL_RGBA, GL_FLOAT, buf);
_mesa_meta_end(ctx);
_mesa_free(buf);
}
src/mesa/drivers/common/meta.h
+19
View File
@@ -91,5 +91,24 @@ _mesa_meta_CopyTexSubImage3D(GLcontext *ctx, GLenum target, GLint level,
GLint x, GLint y,
GLsizei width, GLsizei height);
extern void
_mesa_meta_CopyColorTable(GLcontext *ctx,
GLenum target, GLenum internalformat,
GLint x, GLint y, GLsizei width);
extern void
_mesa_meta_CopyColorSubTable(GLcontext *ctx,GLenum target, GLsizei start,
GLint x, GLint y, GLsizei width);
extern void
_mesa_meta_CopyConvolutionFilter1D(GLcontext *ctx, GLenum target,
GLenum internalFormat,
GLint x, GLint y, GLsizei width);
extern void
_mesa_meta_CopyConvolutionFilter2D(GLcontext *ctx, GLenum target,
GLenum internalFormat, GLint x, GLint y,
GLsizei width, GLsizei height);
#endif /* META_H */