diff options
Diffstat (limited to 'src/mesa/main/mipmap.c')
| -rw-r--r-- | src/mesa/main/mipmap.c | 59 |
1 files changed, 43 insertions, 16 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c index edf72572145..5839632328f 100644 --- a/src/mesa/main/mipmap.c +++ b/src/mesa/main/mipmap.c @@ -2020,13 +2020,15 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, GLuint level; gl_format temp_format; GLint components; - GLuint temp_src_stride; /* in bytes */ + GLuint temp_src_row_stride, temp_src_img_stride; /* in bytes */ GLubyte *temp_src = NULL, *temp_dst = NULL; GLenum temp_datatype; GLenum temp_base_format; + GLubyte **temp_src_slices, **temp_dst_slices; /* only two types of compressed textures at this time */ assert(texObj->Target == GL_TEXTURE_2D || + texObj->Target == GL_TEXTURE_2D_ARRAY || texObj->Target == GL_TEXTURE_CUBE_MAP_ARB); /* @@ -2051,15 +2053,24 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, /* allocate storage for the temporary, uncompressed image */ - /* 20 extra bytes, just be safe when calling last FetchTexel */ - temp_src_stride = _mesa_format_row_stride(temp_format, srcImage->Width); - temp_src = malloc(temp_src_stride * srcImage->Height + 20); - if (!temp_src) { + temp_src_row_stride = _mesa_format_row_stride(temp_format, srcImage->Width); + temp_src_img_stride = _mesa_format_image_size(temp_format, srcImage->Width, + srcImage->Height, 1); + temp_src = malloc(temp_src_img_stride * srcImage->Depth); + + /* Allocate storage for arrays of slice pointers */ + temp_src_slices = malloc(srcImage->Depth * sizeof(GLubyte *)); + temp_dst_slices = malloc(srcImage->Depth * sizeof(GLubyte *)); + + if (!temp_src || !temp_src_slices || !temp_dst_slices) { + free(temp_src); + free(temp_src_slices); + free(temp_dst_slices); _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); return; } - /* decompress base image to the temporary */ + /* decompress base image to the temporary src buffer */ { /* save pixel packing mode */ struct gl_pixelstore_attrib save = ctx->Pack; @@ -2075,7 +2086,6 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, ctx->Pack = save; } - for (level = texObj->BaseLevel; level < maxLevel; level++) { /* generate image[level+1] from image[level] */ const struct gl_texture_image *srcImage; @@ -2084,7 +2094,8 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, GLint dstWidth, dstHeight, dstDepth; GLint border; GLboolean nextLevel; - GLuint temp_dst_stride; /* in bytes */ + GLuint temp_dst_row_stride, temp_dst_img_stride; /* in bytes */ + GLuint i; /* get src image parameters */ srcImage = _mesa_select_tex_image(ctx, texObj, target, level); @@ -2100,9 +2111,12 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, if (!nextLevel) break; - temp_dst_stride = _mesa_format_row_stride(temp_format, dstWidth); + /* Compute dst image strides and alloc memory on first iteration */ + temp_dst_row_stride = _mesa_format_row_stride(temp_format, dstWidth); + temp_dst_img_stride = _mesa_format_image_size(temp_format, dstWidth, + dstHeight, 1); if (!temp_dst) { - temp_dst = malloc(temp_dst_stride * dstHeight); + temp_dst = malloc(temp_dst_img_stride * dstDepth); if (!temp_dst) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); break; @@ -2117,13 +2131,23 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, return; } - /* rescale src image to dest image */ + /* for 2D arrays, setup array[depth] of slice pointers */ + for (i = 0; i < srcDepth; i++) { + temp_src_slices[i] = temp_src + temp_src_img_stride * i; + } + for (i = 0; i < dstDepth; i++) { + temp_dst_slices[i] = temp_dst + temp_dst_img_stride * i; + } + + /* Rescale src image to dest image. + * This will loop over the slices of a 2D array. + */ _mesa_generate_mipmap_level(target, temp_datatype, components, border, srcWidth, srcHeight, srcDepth, - (const GLubyte **) &temp_src, - temp_src_stride, + (const GLubyte **) temp_src_slices, + temp_src_row_stride, dstWidth, dstHeight, dstDepth, - &temp_dst, temp_dst_stride); + temp_dst_slices, temp_dst_row_stride); if (!_mesa_prepare_mipmap_level(ctx, texObj, level + 1, dstWidth, dstHeight, dstDepth, @@ -2135,7 +2159,7 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, /* The image space was allocated above so use glTexSubImage now */ ctx->Driver.TexSubImage(ctx, 2, dstImage, - 0, 0, 0, dstWidth, dstHeight, 1, + 0, 0, 0, dstWidth, dstHeight, dstDepth, temp_base_format, temp_datatype, temp_dst, &ctx->DefaultPacking); @@ -2144,12 +2168,15 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target, GLubyte *temp = temp_src; temp_src = temp_dst; temp_dst = temp; - temp_src_stride = temp_dst_stride; + temp_src_row_stride = temp_dst_row_stride; + temp_src_img_stride = temp_dst_img_stride; } } /* loop over mipmap levels */ free(temp_src); free(temp_dst); + free(temp_src_slices); + free(temp_dst_slices); } /** |