#include "pack.h"
#include "pbo.h"
#include "texgetimage.h"
+#include "texfetch.h"
#include "teximage.h"
}
-#if FEATURE_EXT_texture_sRGB
-
-
-/**
- * Convert a float value from linear space to a
- * non-linear sRGB value in [0, 255].
- * Not terribly efficient.
- */
-static INLINE GLfloat
-linear_to_nonlinear(GLfloat cl)
-{
- /* can't have values outside [0, 1] */
- GLfloat cs;
- if (cl < 0.0031308f) {
- cs = 12.92f * cl;
- }
- else {
- cs = (GLfloat)(1.055 * pow(cl, 0.41666) - 0.055);
- }
- return cs;
-}
-
-
-/**
- * glGetTexImagefor sRGB pixels;
- */
-static void
-get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
- GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
-{
- const GLint width = texImage->Width;
- const GLint height = texImage->Height;
- const GLint depth = texImage->Depth;
- const GLbitfield transferOps = 0x0;
- GLint img, row;
- GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
-
- if (!rgba) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
- return;
- }
-
- for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- img, row, 0);
-
- GLint col;
-
- /* convert row to RGBA format */
- for (col = 0; col < width; col++) {
- texImage->FetchTexelf(texImage, col, row, img, rgba[col]);
- if (texImage->_BaseFormat == GL_LUMINANCE) {
- rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- }
- else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
- rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- }
- else if (texImage->_BaseFormat == GL_RGB ||
- texImage->_BaseFormat == GL_RGBA) {
- rgba[col][RCOMP] = linear_to_nonlinear(rgba[col][RCOMP]);
- rgba[col][GCOMP] = linear_to_nonlinear(rgba[col][GCOMP]);
- rgba[col][BCOMP] = linear_to_nonlinear(rgba[col][BCOMP]);
- }
- }
- _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
- format, type, dest,
- &ctx->Pack, transferOps);
- }
- }
-
- free(rgba);
-}
-
-
-#else /* FEATURE_EXT_texture_sRGB */
-
-
-static INLINE void
-get_tex_srgb(struct gl_context *ctx, GLuint dimensions,
- GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
-{
- ASSERT_NO_FEATURE();
-}
-
-
-#endif /* FEATURE_EXT_texture_sRGB */
-
-
/**
- * glGetTexImagefor RGBA, Luminance, etc. pixels.
+ * glGetTexImage for (s)RGBA, Luminance, etc. pixels.
* This is the slow way since we use texture sampling.
*/
static void
get_tex_rgba(struct gl_context *ctx, GLuint dimensions,
GLenum format, GLenum type, GLvoid *pixels,
- const struct gl_texture_image *texImage)
+ struct gl_texture_image *texImage)
{
const GLint width = texImage->Width;
const GLint height = texImage->Height;
const GLint depth = texImage->Depth;
+ const GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
/* Normally, no pixel transfer ops are performed during glGetTexImage.
* The only possible exception is component clamping to [0,1].
*/
GLbitfield transferOps = 0x0;
GLint img, row;
GLfloat (*rgba)[4] = (GLfloat (*)[4]) malloc(4 * width * sizeof(GLfloat));
+ const GLboolean is_sampler_srgb_decode =
+ _mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB &&
+ texImage->TexObject->Sampler.sRGBDecode == GL_DECODE_EXT;
if (!rgba) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage");
return;
}
+ /* Clamping does not apply to GetTexImage (final conversion)?
+ * Looks like we need clamp though when going from format
+ * containing negative values to unsigned format.
+ */
+ if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {
+ transferOps |= IMAGE_CLAMP_BIT;
+ }
+ else if (!type_with_negative_values(type) &&
+ (dataType == GL_FLOAT ||
+ dataType == GL_SIGNED_NORMALIZED)) {
+ transferOps |= IMAGE_CLAMP_BIT;
+ }
+
+ /* glGetTexImage always returns sRGB data for sRGB textures. Make sure the
+ * fetch functions return sRGB data without linearizing it.
+ */
+ if (is_sampler_srgb_decode) {
+ texImage->TexObject->Sampler.sRGBDecode = GL_SKIP_DECODE_EXT;
+ _mesa_set_fetch_functions(texImage, dimensions);
+ }
+
for (img = 0; img < depth; img++) {
for (row = 0; row < height; row++) {
void *dest = _mesa_image_address(dimensions, &ctx->Pack, pixels,
width, height, format, type,
img, row, 0);
GLint col;
- GLenum dataType = _mesa_get_format_datatype(texImage->TexFormat);
-
- /* clamp does not apply to GetTexImage (final conversion)?
- * Looks like we need clamp though when going from format
- * containing negative values to unsigned format.
- */
- if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {
- transferOps |= IMAGE_CLAMP_BIT;
- }
- else if (!type_with_negative_values(type) &&
- (dataType == GL_FLOAT ||
- dataType == GL_SIGNED_NORMALIZED)) {
- transferOps |= IMAGE_CLAMP_BIT;
- }
for (col = 0; col < width; col++) {
texImage->FetchTexelf(texImage, col, row, img, rgba[col]);
}
}
+ if (is_sampler_srgb_decode) {
+ texImage->TexObject->Sampler.sRGBDecode = GL_DECODE_EXT;
+ _mesa_set_fetch_functions(texImage, dimensions);
+ }
+
free(rgba);
}
* texture data to the PBO if the PBO is in VRAM along with the texture.
*/
GLubyte *buf = (GLubyte *)
- ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
+ ctx->Driver.MapBuffer(ctx, GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
if (!buf) {
/* out of memory or other unexpected error */
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGetTexImage(map PBO failed)");
else if (format == GL_YCBCR_MESA) {
get_tex_ycbcr(ctx, dimensions, format, type, pixels, texImage);
}
- else if (_mesa_get_format_color_encoding(texImage->TexFormat) == GL_SRGB) {
- get_tex_srgb(ctx, dimensions, format, type, pixels, texImage);
- }
else {
get_tex_rgba(ctx, dimensions, format, type, pixels, texImage);
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- ctx->Pack.BufferObj);
+ ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj);
}
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
/* pack texture image into a PBO */
GLubyte *buf = (GLubyte *)
- ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
+ ctx->Driver.MapBuffer(ctx, GL_WRITE_ONLY_ARB, ctx->Pack.BufferObj);
if (!buf) {
/* out of memory or other unexpected error */
_mesa_error(ctx, GL_OUT_OF_MEMORY,
}
if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- ctx->Pack.BufferObj);
+ ctx->Driver.UnmapBuffer(ctx, ctx->Pack.BufferObj);
}
}
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