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Diffstat (limited to 'src/mesa/main/texstore.c')
-rw-r--r--src/mesa/main/texstore.c115
1 files changed, 81 insertions, 34 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index 899cf044fa7..91bd6357549 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -1,4 +1,4 @@
-/* $Id: texstore.c,v 1.42 2002/09/27 02:45:38 brianp Exp $ */
+/* $Id: texstore.c,v 1.43 2002/10/18 17:41:45 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -674,7 +674,8 @@ transfer_compressed_teximage(GLcontext *ctx, GLuint dimensions,
GLenum srcFormat, GLenum srcType,
const struct gl_pixelstore_attrib *unpacking,
const GLvoid *source,
- GLenum dstFormat, GLubyte *dest,
+ const struct gl_texture_format *dstFormat,
+ GLubyte *dest,
GLint dstRowStride)
{
GLchan *tempImage = NULL;
@@ -682,8 +683,10 @@ transfer_compressed_teximage(GLcontext *ctx, GLuint dimensions,
GLenum baseFormat;
ASSERT(dimensions == 2);
+ /* TexelBytes is zero if and only if it's a compressed format */
+ ASSERT(dstFormat->TexelBytes == 0);
- baseFormat = _mesa_base_tex_format(ctx, dstFormat);
+ baseFormat = dstFormat->BaseFormat;
if (srcFormat != baseFormat || srcType != CHAN_TYPE ||
ctx->_ImageTransferState != 0 || unpacking->SwapBytes) {
@@ -786,7 +789,7 @@ _mesa_store_teximage1d(GLcontext *ctx, GLenum target, GLint level,
width);
transfer_compressed_teximage(ctx, 1, width, 1, 1,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
@@ -862,7 +865,7 @@ _mesa_store_teximage2d(GLcontext *ctx, GLenum target, GLint level,
width);
transfer_compressed_teximage(ctx, 2, width, height, 1,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
@@ -933,7 +936,7 @@ _mesa_store_teximage3d(GLcontext *ctx, GLenum target, GLint level,
width);
transfer_compressed_teximage(ctx, 3, width, height, depth,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
@@ -982,7 +985,7 @@ _mesa_store_texsubimage1d(GLcontext *ctx, GLenum target, GLint level,
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
@@ -1031,7 +1034,7 @@ _mesa_store_texsubimage2d(GLcontext *ctx, GLenum target, GLint level,
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
@@ -1079,7 +1082,7 @@ _mesa_store_texsubimage3d(GLcontext *ctx, GLenum target, GLint level,
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
@@ -1890,13 +1893,16 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
const struct gl_texture_unit *texUnit,
struct gl_texture_object *texObj)
{
+ const struct gl_texture_image *srcImage;
+ const struct gl_texture_format *convertFormat;
const GLubyte *srcData;
GLubyte *dstData;
GLint level;
GLint maxLevels = 0;
ASSERT(texObj);
- ASSERT(texObj->Image[texObj->BaseLevel]);
+ srcImage = texObj->Image[texObj->BaseLevel];
+ ASSERT(srcImage);
switch (texObj->Target) {
case GL_TEXTURE_1D:
@@ -1920,28 +1926,57 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
return;
}
- /* setup for compressed textures */
- {
- const struct gl_texture_image *srcImage;
- srcImage = texObj->Image[texObj->BaseLevel];
- if (srcImage->IsCompressed) {
- /* allocate storage for uncompressed images */
- GLint size = _mesa_bytes_per_pixel(srcImage->Format, CHAN_TYPE)
- * srcImage->Width * srcImage->Height * srcImage->Depth;
- srcData = MALLOC(size);
- if (!srcData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- return;
- }
- dstData = MALLOC(size / 2); /* 1/4 would probably be OK */
- if (!dstData) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
- FREE((void *) srcData);
- return;
+ /* Find convertFormat - the format that do_row() will process */
+ if (srcImage->IsCompressed) {
+ /* setup for compressed textures */
+ GLint row, components, size;
+ GLchan *dst;
+
+ assert(texObj->Target == GL_TEXTURE_2D);
+
+ if (srcImage->Format == GL_RGB) {
+ convertFormat = &_mesa_texformat_rgb;
+ components = 3;
+ }
+ else if (srcImage->Format == GL_RGBA) {
+ convertFormat = &_mesa_texformat_rgba;
+ components = 4;
+ }
+ else {
+ _mesa_problem(ctx, "bad srcImage->Format in _mesa_generate_mipmaps");
+ return;
+ }
+
+ /* allocate storage for uncompressed GL_RGB or GL_RGBA images */
+ size = _mesa_bytes_per_pixel(srcImage->Format, CHAN_TYPE)
+ * srcImage->Width * srcImage->Height * srcImage->Depth + 20;
+ /* 20 extra bytes, just be safe when calling last FetchTexel */
+ srcData = MALLOC(size);
+ if (!srcData) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
+ return;
+ }
+ dstData = 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++) {
+ GLint col;
+ for (col = 0; col < srcImage->Width; col++) {
+ (*srcImage->FetchTexel)(srcImage, col, row, 0, (GLvoid *) dst);
+ dst += components;
}
- /* XXX decompress base image here */
}
}
+ else {
+ /* uncompressed */
+ convertFormat = srcImage->TexFormat;
+ }
for (level = texObj->BaseLevel; level < texObj->MaxLevel
&& level < maxLevels - 1; level++) {
@@ -2025,7 +2060,7 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
_mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
return;
}
- /* srcData and dstData are all set */
+ /* srcData and dstData are already set */
ASSERT(srcData);
ASSERT(dstData);
}
@@ -2047,7 +2082,7 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
*/
switch (target) {
case GL_TEXTURE_1D:
- make_1d_mipmap(srcImage->TexFormat, border,
+ make_1d_mipmap(convertFormat, border,
srcWidth, srcData,
dstWidth, dstData);
break;
@@ -2058,12 +2093,12 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
- make_2d_mipmap(srcImage->TexFormat, border,
+ make_2d_mipmap(convertFormat, border,
srcWidth, srcHeight, srcData,
dstWidth, dstHeight, dstData);
break;
case GL_TEXTURE_3D:
- make_3d_mipmap(srcImage->TexFormat, border,
+ make_3d_mipmap(convertFormat, border,
srcWidth, srcHeight, srcDepth, srcData,
dstWidth, dstHeight, dstDepth, dstData);
break;
@@ -2077,7 +2112,19 @@ _mesa_generate_mipmap(GLcontext *ctx, GLenum target,
if (dstImage->IsCompressed) {
GLubyte *temp;
- /* XXX compress from dstData into dstImage->Data */
+ /* compress image from dstData into dstImage->Data */
+ const GLenum srcFormat = convertFormat->BaseFormat;
+ GLint dstRowStride = _mesa_compressed_row_stride(srcImage->IntFormat,
+ dstWidth);
+ ASSERT(srcFormat == GL_RGB || srcFormat == GL_RGBA);
+ _mesa_compress_teximage(ctx,
+ dstWidth, dstHeight, /* size */
+ srcFormat, /* source format */
+ dstData, /* source buffer */
+ dstWidth, /* source row stride */
+ dstImage->TexFormat, /* dest format */
+ dstImage->Data, /* dest buffer */
+ dstRowStride ); /* dest row stride */
/* swap src and dest pointers */
temp = (GLubyte *) srcData;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 09:24:10 +0000