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-rw-r--r--src/mesa/main/mipmap.c59
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);
}
/**