aboutsummaryrefslogtreecommitdiffstats
path: root/src/mesa/main/texstore.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/main/texstore.c')
-rw-r--r--src/mesa/main/texstore.c324
1 files changed, 2 insertions, 322 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index bde69b11485..f3739f950b0 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1,9 +1,9 @@
/*
* Mesa 3-D graphics library
- * Version: 7.3
+ * Version: 7.5
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (c) 2008 VMware, Inc.
+ * Copyright (c) 2008-2009 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@@ -3890,323 +3890,3 @@ _mesa_store_compressed_texsubimage3d(GLcontext *ctx, GLenum target,
(void) texObj;
(void) texImage;
}
-
-
-
-
-#if FEATURE_EXT_texture_sRGB
-
-/**
- * Test if given texture image is an sRGB format.
- */
-static GLboolean
-is_srgb_teximage(const struct gl_texture_image *texImage)
-{
- switch (texImage->TexFormat->MesaFormat) {
- case MESA_FORMAT_SRGB8:
- case MESA_FORMAT_SRGBA8:
- case MESA_FORMAT_SARGB8:
- case MESA_FORMAT_SL8:
- case MESA_FORMAT_SLA8:
- case MESA_FORMAT_SRGB_DXT1:
- case MESA_FORMAT_SRGBA_DXT1:
- case MESA_FORMAT_SRGBA_DXT3:
- case MESA_FORMAT_SRGBA_DXT5:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * 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 < 0.0031308) {
- cs = 12.92 * cl;
- }
- else {
- cs = 1.055 * _mesa_pow(cl, 0.41666) - 0.055;
- }
- return cs;
-}
-
-#endif /* FEATURE_EXT_texture_sRGB */
-
-
-/**
- * Can the given type represent negative values?
- */
-static INLINE GLboolean
-type_with_negative_values(GLenum type)
-{
- switch (type) {
- case GL_BYTE:
- case GL_SHORT:
- case GL_INT:
- case GL_FLOAT:
- case GL_HALF_FLOAT_ARB:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * This is the software fallback for Driver.GetTexImage().
- * All error checking will have been done before this routine is called.
- */
-void
-_mesa_get_teximage(GLcontext *ctx, GLenum target, GLint level,
- GLenum format, GLenum type, GLvoid *pixels,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage)
-{
- const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
-
- if (ctx->Pack.BufferObj->Name) {
- /* Packing texture image into a PBO.
- * Map the (potentially) VRAM-based buffer into our process space so
- * we can write into it with the code below.
- * A hardware driver might use a sophisticated blit to move the
- * 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);
- if (!buf) {
- /* buffer is already mapped - that's an error */
- _mesa_error(ctx, GL_INVALID_OPERATION,"glGetTexImage(PBO is mapped)");
- return;
- }
- /* <pixels> was an offset into the PBO.
- * Now make it a real, client-side pointer inside the mapped region.
- */
- pixels = ADD_POINTERS(buf, pixels);
- }
- else if (!pixels) {
- /* not an error */
- return;
- }
-
- {
- const GLint width = texImage->Width;
- const GLint height = texImage->Height;
- const GLint depth = texImage->Depth;
- GLint img, row;
- for (img = 0; img < depth; img++) {
- for (row = 0; row < height; row++) {
- /* compute destination address in client memory */
- GLvoid *dest = _mesa_image_address( dimensions, &ctx->Pack, pixels,
- width, height, format, type,
- img, row, 0);
- assert(dest);
-
- if (format == GL_COLOR_INDEX) {
- GLuint indexRow[MAX_WIDTH];
- GLint col;
- /* Can't use FetchTexel here because that returns RGBA */
- if (texImage->TexFormat->IndexBits == 8) {
- const GLubyte *src = (const GLubyte *) texImage->Data;
- src += width * (img * texImage->Height + row);
- for (col = 0; col < width; col++) {
- indexRow[col] = src[col];
- }
- }
- else if (texImage->TexFormat->IndexBits == 16) {
- const GLushort *src = (const GLushort *) texImage->Data;
- src += width * (img * texImage->Height + row);
- for (col = 0; col < width; col++) {
- indexRow[col] = src[col];
- }
- }
- else {
- _mesa_problem(ctx,
- "Color index problem in _mesa_GetTexImage");
- }
- _mesa_pack_index_span(ctx, width, type, dest,
- indexRow, &ctx->Pack,
- 0 /* no image transfer */);
- }
- else if (format == GL_DEPTH_COMPONENT) {
- GLfloat depthRow[MAX_WIDTH];
- GLint col;
- for (col = 0; col < width; col++) {
- (*texImage->FetchTexelf)(texImage, col, row, img,
- depthRow + col);
- }
- _mesa_pack_depth_span(ctx, width, dest, type,
- depthRow, &ctx->Pack);
- }
- else if (format == GL_DEPTH_STENCIL_EXT) {
- /* XXX Note: we're bypassing texImage->FetchTexel()! */
- const GLuint *src = (const GLuint *) texImage->Data;
- src += width * row + width * height * img;
- _mesa_memcpy(dest, src, width * sizeof(GLuint));
- if (ctx->Pack.SwapBytes) {
- _mesa_swap4((GLuint *) dest, width);
- }
- }
- else if (format == GL_YCBCR_MESA) {
- /* No pixel transfer */
- const GLint rowstride = texImage->RowStride;
- MEMCPY(dest,
- (const GLushort *) texImage->Data + row * rowstride,
- width * sizeof(GLushort));
- /* check for byte swapping */
- if ((texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR
- && type == GL_UNSIGNED_SHORT_8_8_REV_MESA) ||
- (texImage->TexFormat->MesaFormat == MESA_FORMAT_YCBCR_REV
- && type == GL_UNSIGNED_SHORT_8_8_MESA)) {
- if (!ctx->Pack.SwapBytes)
- _mesa_swap2((GLushort *) dest, width);
- }
- else if (ctx->Pack.SwapBytes) {
- _mesa_swap2((GLushort *) dest, width);
- }
- }
-#if FEATURE_EXT_texture_sRGB
- else if (is_srgb_teximage(texImage)) {
- /* special case this since need to backconvert values */
- /* convert row to RGBA format */
- GLfloat rgba[MAX_WIDTH][4];
- GLint col;
- GLbitfield transferOps = 0x0;
-
- 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);
- }
-#endif /* FEATURE_EXT_texture_sRGB */
- else {
- /* general case: convert row to RGBA format */
- GLfloat rgba[MAX_WIDTH][4];
- GLint col;
- GLbitfield transferOps = 0x0;
-
- /* 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) &&
- (texImage->TexFormat->DataType == GL_FLOAT ||
- texImage->TexFormat->DataType == GL_SIGNED_NORMALIZED))
- transferOps |= IMAGE_CLAMP_BIT;
-
- for (col = 0; col < width; col++) {
- (*texImage->FetchTexelf)(texImage, col, row, img, rgba[col]);
- if (texImage->_BaseFormat == GL_ALPHA) {
- rgba[col][RCOMP] = 0.0;
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- }
- else if (texImage->_BaseFormat == GL_LUMINANCE) {
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- rgba[col][ACOMP] = 1.0;
- }
- else if (texImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- }
- else if (texImage->_BaseFormat == GL_INTENSITY) {
- rgba[col][GCOMP] = 0.0;
- rgba[col][BCOMP] = 0.0;
- rgba[col][ACOMP] = 1.0;
- }
- }
- _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba,
- format, type, dest,
- &ctx->Pack, transferOps);
- } /* format */
- } /* row */
- } /* img */
- }
-
- if (ctx->Pack.BufferObj->Name) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- ctx->Pack.BufferObj);
- }
-}
-
-
-
-/**
- * This is the software fallback for Driver.GetCompressedTexImage().
- * All error checking will have been done before this routine is called.
- */
-void
-_mesa_get_compressed_teximage(GLcontext *ctx, GLenum target, GLint level,
- GLvoid *img,
- struct gl_texture_object *texObj,
- struct gl_texture_image *texImage)
-{
- GLuint size;
-
- if (ctx->Pack.BufferObj->Name) {
- /* pack texture image into a PBO */
- GLubyte *buf;
- if ((const GLubyte *) img + texImage->CompressedSize >
- (const GLubyte *) ctx->Pack.BufferObj->Size) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetCompressedTexImage(invalid PBO access)");
- return;
- }
- buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- GL_WRITE_ONLY_ARB,
- ctx->Pack.BufferObj);
- if (!buf) {
- /* buffer is already mapped - that's an error */
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetCompressedTexImage(PBO is mapped)");
- return;
- }
- img = ADD_POINTERS(buf, img);
- }
- else if (!img) {
- /* not an error */
- return;
- }
-
- /* don't use texImage->CompressedSize since that may be padded out */
- size = _mesa_compressed_texture_size(ctx, texImage->Width, texImage->Height,
- texImage->Depth,
- texImage->TexFormat->MesaFormat);
-
- /* just memcpy, no pixelstore or pixel transfer */
- _mesa_memcpy(img, texImage->Data, size);
-
- if (ctx->Pack.BufferObj->Name) {
- ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
- ctx->Pack.BufferObj);
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 15:34:38 +0000