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-rw-r--r--src/mesa/main/mipmap.c177
1 files changed, 77 insertions, 100 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c
index 45fcc27e00b..43eea5050de 100644
--- a/src/mesa/main/mipmap.c
+++ b/src/mesa/main/mipmap.c
@@ -1970,79 +1970,72 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
GLuint maxLevel)
{
GLint level;
- gl_format convertFormat;
+ gl_format temp_format;
const GLubyte *srcData = NULL;
GLubyte *dstData = NULL;
- GLenum datatype;
+ GLenum datatype, temp_base_format;
GLuint comps;
+ GLuint row;
+ GLint components, size;
+ GLchan *dst;
- /* Find convertFormat - the format that do_row() will process */
- if (_mesa_is_format_compressed(srcImage->TexFormat)) {
- /* setup for compressed textures - need to allocate temporary
- * image buffers to hold uncompressed images.
- */
- GLuint row;
- GLint components, size;
- GLchan *dst;
-
- assert(texObj->Target == GL_TEXTURE_2D ||
- texObj->Target == GL_TEXTURE_CUBE_MAP_ARB);
-
- if (srcImage->_BaseFormat == GL_RGB) {
- convertFormat = MESA_FORMAT_RGB888;
- components = 3;
- } else if (srcImage->_BaseFormat == GL_RED) {
- convertFormat = MESA_FORMAT_R8;
- components = 1;
- } else if (srcImage->_BaseFormat == GL_RG) {
- convertFormat = MESA_FORMAT_RG88;
- components = 2;
- } else if (srcImage->_BaseFormat == GL_RGBA) {
- convertFormat = MESA_FORMAT_RGBA8888;
- components = 4;
- } else if (srcImage->_BaseFormat == GL_LUMINANCE) {
- convertFormat = MESA_FORMAT_L8;
- components = 1;
- } else if (srcImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
- convertFormat = MESA_FORMAT_AL88;
- components = 2;
- } else {
- _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps");
- return;
- }
+ /* Choose the format we will do _mesa_generate_mipmap_level() in,
+ * and uncompress the firstImage into a temporary of that format.
+ */
+ assert(texObj->Target == GL_TEXTURE_2D ||
+ texObj->Target == GL_TEXTURE_CUBE_MAP_ARB);
+
+ if (srcImage->_BaseFormat == GL_RGB) {
+ temp_format = MESA_FORMAT_RGB888;
+ components = 3;
+ } else if (srcImage->_BaseFormat == GL_RED) {
+ temp_format = MESA_FORMAT_R8;
+ components = 1;
+ } else if (srcImage->_BaseFormat == GL_RG) {
+ temp_format = MESA_FORMAT_RG88;
+ components = 2;
+ } else if (srcImage->_BaseFormat == GL_RGBA) {
+ temp_format = MESA_FORMAT_RGBA8888;
+ components = 4;
+ } else if (srcImage->_BaseFormat == GL_LUMINANCE) {
+ temp_format = MESA_FORMAT_L8;
+ components = 1;
+ } else if (srcImage->_BaseFormat == GL_LUMINANCE_ALPHA) {
+ temp_format = MESA_FORMAT_AL88;
+ components = 2;
+ } else {
+ _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps");
+ return;
+ }
- /* allocate storage for uncompressed GL_RGB or GL_RGBA images */
- size = _mesa_bytes_per_pixel(srcImage->_BaseFormat, CHAN_TYPE)
- * srcImage->Width * srcImage->Height * srcImage->Depth + 20;
- /* 20 extra bytes, just be safe when calling last FetchTexel */
- srcData = (GLubyte *) malloc(size);
- if (!srcData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- return;
- }
- dstData = (GLubyte *) malloc(size / 2); /* 1/4 would probably be OK */
- if (!dstData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- free((void *) srcData);
- return;
- }
+ /* allocate storage for uncompressed GL_RGB or GL_RGBA images */
+ size = _mesa_bytes_per_pixel(srcImage->_BaseFormat, CHAN_TYPE)
+ * srcImage->Width * srcImage->Height * srcImage->Depth + 20;
+ /* 20 extra bytes, just be safe when calling last FetchTexel */
+ srcData = (GLubyte *) malloc(size);
+ if (!srcData) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
+ return;
+ }
+ dstData = (GLubyte *) malloc(size / 2); /* 1/4 would probably be OK */
+ if (!dstData) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
+ free((void *) srcData);
+ return;
+ }
- /* decompress base image here */
- dst = (GLchan *) srcData;
- for (row = 0; row < srcImage->Height; row++) {
- GLuint col;
- for (col = 0; col < srcImage->Width; col++) {
- srcImage->FetchTexelc(srcImage, col, row, 0, dst);
- dst += components;
- }
+ /* decompress base image here */
+ dst = (GLchan *) srcData;
+ for (row = 0; row < srcImage->Height; row++) {
+ GLuint col;
+ for (col = 0; col < srcImage->Width; col++) {
+ srcImage->FetchTexelc(srcImage, col, row, 0, dst);
+ dst += components;
}
}
- else {
- /* uncompressed */
- convertFormat = srcImage->TexFormat;
- }
- _mesa_format_to_type_and_comps(convertFormat, &datatype, &comps);
+ _mesa_format_to_type_and_comps(temp_format, &datatype, &comps);
+ temp_base_format = _mesa_get_format_base_format(temp_format);
for (level = texObj->BaseLevel; level < maxLevel; level++) {
/* generate image[level+1] from image[level] */
@@ -2066,10 +2059,8 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
&dstWidth, &dstHeight, &dstDepth);
if (!nextLevel) {
/* all done */
- if (_mesa_is_format_compressed(srcImage->TexFormat)) {
- free((void *) srcData);
- free(dstData);
- }
+ free((void *) srcData);
+ free(dstData);
return;
}
@@ -2103,17 +2094,6 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
}
}
- /* Setup src and dest data pointers */
- if (_mesa_is_format_compressed(dstImage->TexFormat)) {
- /* srcData and dstData are already set */
- ASSERT(srcData);
- ASSERT(dstData);
- }
- else {
- srcData = (const GLubyte *) srcImage->Data;
- dstData = (GLubyte *) dstImage->Data;
- }
-
ASSERT(dstImage->TexFormat);
ASSERT(dstImage->FetchTexelc);
ASSERT(dstImage->FetchTexelf);
@@ -2124,27 +2104,24 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
dstWidth, dstHeight, dstDepth,
dstData, dstImage->RowStride);
- if (_mesa_is_format_compressed(dstImage->TexFormat)) {
- GLubyte *temp;
- /* compress image from dstData into dstImage->Data */
- const GLenum srcFormat = _mesa_get_format_base_format(convertFormat);
- GLint dstRowStride
- = _mesa_format_row_stride(dstImage->TexFormat, dstWidth);
-
- _mesa_texstore(ctx, 2, dstImage->_BaseFormat,
- dstImage->TexFormat,
- dstImage->Data,
- 0, 0, 0, /* dstX/Y/Zoffset */
- dstRowStride, 0, /* strides */
- dstWidth, dstHeight, 1, /* size */
- srcFormat, CHAN_TYPE,
- dstData, /* src data, actually */
- &ctx->DefaultPacking);
-
- /* swap src and dest pointers */
- temp = (GLubyte *) srcData;
- srcData = dstData;
- dstData = temp;
+ /* compress image from dstData into dstImage->Data */
+ _mesa_texstore(ctx, 2, dstImage->_BaseFormat,
+ dstImage->TexFormat,
+ dstImage->Data,
+ 0, 0, 0, /* dstX/Y/Zoffset */
+ _mesa_format_row_stride(dstImage->TexFormat, dstWidth),
+ NULL,
+ dstWidth, dstHeight, 1, /* size */
+ temp_base_format, CHAN_TYPE,
+ dstData, /* src data, actually */
+ &ctx->DefaultPacking);
+
+ /* swap src and dest pointers */
+ {
+ GLubyte *temp;
+ temp = (GLubyte *) srcData;
+ srcData = dstData;
+ dstData = temp;
}
} /* loop over mipmap levels */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 16:07:17 +0000