-/* $Id: texstore.c,v 1.42 2002/09/27 02:45:38 brianp Exp $ */
+/* $Id: texstore.c,v 1.45 2002/10/24 23:57:21 brianp Exp $ */
/*
* Mesa 3-D graphics library
*/
-
+#include "glheader.h"
#include "colormac.h"
#include "context.h"
#include "convolve.h"
#include "image.h"
#include "macros.h"
-#include "mem.h"
+#include "imports.h"
#include "texcompress.h"
#include "texformat.h"
#include "teximage.h"
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;
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) {
width);
transfer_compressed_teximage(ctx, 1, width, 1, 1,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
width);
transfer_compressed_teximage(ctx, 2, width, height, 1,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
width);
transfer_compressed_teximage(ctx, 3, width, height, depth,
format, type, packing,
- pixels, texImage->IntFormat,
+ pixels, texImage->TexFormat,
(GLubyte *) texImage->Data, dstRowStride);
}
else {
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
format, type, /* source format/type */
packing, /* source packing */
pixels, /* source data */
- texImage->IntFormat,/* dest format */
+ texImage->TexFormat,/* dest format */
dest, dstRowStride);
}
else {
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;
+ GLint level, maxLevels;
ASSERT(texObj);
- ASSERT(texObj->Image[texObj->BaseLevel]);
-
- switch (texObj->Target) {
- case GL_TEXTURE_1D:
- maxLevels = ctx->Const.MaxTextureLevels;
- break;
- case GL_TEXTURE_2D:
- maxLevels = ctx->Const.MaxTextureLevels;
- break;
- case GL_TEXTURE_3D:
- maxLevels = ctx->Const.Max3DTextureLevels;
- break;
- case GL_TEXTURE_CUBE_MAP_ARB:
- maxLevels = ctx->Const.MaxCubeTextureLevels;
- break;
- case GL_TEXTURE_RECTANGLE_NV:
- maxLevels = 1;
- break;
- default:
- _mesa_problem(ctx,
- "Bad texture object dimension in _mesa_generate_mipmaps");
- return;
- }
+ srcImage = texObj->Image[texObj->BaseLevel];
+ ASSERT(srcImage);
- /* 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;
+ maxLevels = _mesa_max_texture_levels(ctx, texObj->Target);
+ ASSERT(maxLevels > 0); /* bad target */
+
+ /* 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++) {
_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);
}
*/
switch (target) {
case GL_TEXTURE_1D:
- make_1d_mipmap(srcImage->TexFormat, border,
+ make_1d_mipmap(convertFormat, border,
srcWidth, srcData,
dstWidth, dstData);
break;
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;
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;
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