diff options
Diffstat (limited to 'src/mesa/state_tracker')
-rw-r--r-- | src/mesa/state_tracker/st_gen_mipmap.c | 205 |
1 files changed, 1 insertions, 204 deletions
diff --git a/src/mesa/state_tracker/st_gen_mipmap.c b/src/mesa/state_tracker/st_gen_mipmap.c index e53da5fd4ae..36fea3d7ff8 100644 --- a/src/mesa/state_tracker/st_gen_mipmap.c +++ b/src/mesa/state_tracker/st_gen_mipmap.c @@ -106,209 +106,6 @@ st_render_mipmap(struct st_context *st, return TRUE; } - -/** - * Helper function to decompress an image. The result is a 32-bpp RGBA - * image with stride==width. - */ -static void -decompress_image(enum pipe_format format, int datatype, - const uint8_t *src, void *dst, - unsigned width, unsigned height, unsigned src_stride) -{ - const struct util_format_description *desc = util_format_description(format); - const uint bw = util_format_get_blockwidth(format); - const uint bh = util_format_get_blockheight(format); - uint dst_stride = 4 * MAX2(width, bw); - - if (datatype == GL_FLOAT) { - desc->unpack_rgba_float((float *)dst, dst_stride * sizeof(GLfloat), src, src_stride, width, height); - if (width < bw || height < bh) { - float *dst_p = (float *)dst; - /* We're decompressing an image smaller than the compression - * block size. We don't want garbage pixel values in the region - * outside (width x height) so replicate pixels from the (width - * x height) region to fill out the (bw x bh) block size. - */ - uint x, y; - for (y = 0; y < bh; y++) { - for (x = 0; x < bw; x++) { - if (x >= width || y >= height) { - uint p = (y * bw + x) * 4; - dst_p[p + 0] = dst_p[0]; - dst_p[p + 1] = dst_p[1]; - dst_p[p + 2] = dst_p[2]; - dst_p[p + 3] = dst_p[3]; - } - } - } - } - } else { - desc->unpack_rgba_8unorm((uint8_t *)dst, dst_stride, src, src_stride, width, height); - if (width < bw || height < bh) { - uint8_t *dst_p = (uint8_t *)dst; - /* We're decompressing an image smaller than the compression - * block size. We don't want garbage pixel values in the region - * outside (width x height) so replicate pixels from the (width - * x height) region to fill out the (bw x bh) block size. - */ - uint x, y; - for (y = 0; y < bh; y++) { - for (x = 0; x < bw; x++) { - if (x >= width || y >= height) { - uint p = (y * bw + x) * 4; - dst_p[p + 0] = dst_p[0]; - dst_p[p + 1] = dst_p[1]; - dst_p[p + 2] = dst_p[2]; - dst_p[p + 3] = dst_p[3]; - } - } - } - } - } -} - -/** - * Helper function to compress an image. The source is a 32-bpp RGBA image - * with stride==width. - */ -static void -compress_image(enum pipe_format format, int datatype, - const void *src, uint8_t *dst, - unsigned width, unsigned height, unsigned dst_stride) -{ - const struct util_format_description *desc = util_format_description(format); - const uint src_stride = 4 * width; - - if (datatype == GL_FLOAT) - desc->pack_rgba_float(dst, dst_stride, (GLfloat *)src, src_stride * sizeof(GLfloat), width, height); - else - desc->pack_rgba_8unorm(dst, dst_stride, (uint8_t *)src, src_stride, width, height); -} - - -/** - * Software fallback for generate mipmap levels. - */ -static void -fallback_generate_mipmap(struct gl_context *ctx, GLenum target, - struct gl_texture_object *texObj) -{ - struct pipe_context *pipe = st_context(ctx)->pipe; - struct pipe_resource *pt = st_get_texobj_resource(texObj); - const uint baseLevel = texObj->BaseLevel; - const uint lastLevel = pt->last_level; - const uint face = _mesa_tex_target_to_face(target); - uint dstLevel; - GLenum datatype; - GLuint comps; - GLboolean compressed; - - if (ST_DEBUG & DEBUG_FALLBACK) - debug_printf("%s: fallback processing\n", __FUNCTION__); - - assert(target != GL_TEXTURE_3D); /* not done yet */ - - compressed = - _mesa_is_format_compressed(texObj->Image[face][baseLevel]->TexFormat); - - if (compressed) { - GLenum type = - _mesa_get_format_datatype(texObj->Image[face][baseLevel]->TexFormat); - - datatype = type == GL_UNSIGNED_NORMALIZED ? GL_UNSIGNED_BYTE : GL_FLOAT; - comps = 4; - } - else { - _mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat, - &datatype, &comps); - assert(comps > 0 && "bad texture format in fallback_generate_mipmap()"); - } - - for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) { - const uint srcLevel = dstLevel - 1; - const uint srcWidth = u_minify(pt->width0, srcLevel); - const uint srcHeight = u_minify(pt->height0, srcLevel); - const uint srcDepth = u_minify(pt->depth0, srcLevel); - const uint dstWidth = u_minify(pt->width0, dstLevel); - const uint dstHeight = u_minify(pt->height0, dstLevel); - const uint dstDepth = u_minify(pt->depth0, dstLevel); - struct pipe_transfer *srcTrans, *dstTrans; - const ubyte *srcData; - ubyte *dstData; - int srcStride, dstStride; - - srcTrans = pipe_get_transfer(pipe, pt, srcLevel, - face, - PIPE_TRANSFER_READ, 0, 0, - srcWidth, srcHeight); - - dstTrans = pipe_get_transfer(pipe, pt, dstLevel, - face, - PIPE_TRANSFER_WRITE, 0, 0, - dstWidth, dstHeight); - - srcData = (ubyte *) pipe_transfer_map(pipe, srcTrans); - dstData = (ubyte *) pipe_transfer_map(pipe, dstTrans); - - srcStride = srcTrans->stride / util_format_get_blocksize(srcTrans->resource->format); - dstStride = dstTrans->stride / util_format_get_blocksize(dstTrans->resource->format); - - /* this cannot work correctly for 3d since it does - not respect layerStride. */ - if (compressed) { - const enum pipe_format format = pt->format; - const uint bw = util_format_get_blockwidth(format); - const uint bh = util_format_get_blockheight(format); - const uint srcWidth2 = align(srcWidth, bw); - const uint srcHeight2 = align(srcHeight, bh); - const uint dstWidth2 = align(dstWidth, bw); - const uint dstHeight2 = align(dstHeight, bh); - uint8_t *srcTemp, *dstTemp; - - assert(comps == 4); - - srcTemp = malloc(srcWidth2 * srcHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1)); - dstTemp = malloc(dstWidth2 * dstHeight2 * comps * (datatype == GL_FLOAT ? 4 : 1)); - - /* decompress the src image: srcData -> srcTemp */ - decompress_image(format, datatype, srcData, srcTemp, srcWidth2, srcHeight2, srcTrans->stride); - - _mesa_generate_mipmap_level(target, datatype, comps, - 0 /*border*/, - srcWidth2, srcHeight2, srcDepth, - srcTemp, - srcWidth2, /* stride in texels */ - dstWidth2, dstHeight2, dstDepth, - dstTemp, - dstWidth2); /* stride in texels */ - - /* compress the new image: dstTemp -> dstData */ - compress_image(format, datatype, dstTemp, dstData, dstWidth2, dstHeight2, dstTrans->stride); - - free(srcTemp); - free(dstTemp); - } - else { - _mesa_generate_mipmap_level(target, datatype, comps, - 0 /*border*/, - srcWidth, srcHeight, srcDepth, - srcData, - srcStride, /* stride in texels */ - dstWidth, dstHeight, dstDepth, - dstData, - dstStride); /* stride in texels */ - } - - pipe_transfer_unmap(pipe, srcTrans); - pipe_transfer_unmap(pipe, dstTrans); - - pipe->transfer_destroy(pipe, srcTrans); - pipe->transfer_destroy(pipe, dstTrans); - } -} - - /** * Compute the expected number of mipmap levels in the texture given * the width/height/depth of the base image and the GL_TEXTURE_BASE_LEVEL/ @@ -422,7 +219,7 @@ st_generate_mipmap(struct gl_context *ctx, GLenum target, if (!st_render_mipmap(st, target, stObj, baseLevel, lastLevel)) { /* since the util code actually also has a fallback, should probably make it never fail and kill this */ - fallback_generate_mipmap(ctx, target, texObj); + _mesa_generate_mipmap(ctx, target, texObj); } /* Fill in the Mesa gl_texture_image fields */ |