On 12/16/2014 03:22 PM, Laura Ekstrand wrote:
On Sat, Dec 13, 2014 at 6:42 AM, Brian Paul <bri...@vmware.com
<mailto:bri...@vmware.com>> wrote:
Needed for GL_ARB_get_texture_sub_image. But at this point, the
offsets are always zero and the sizes match the whole texture image.
---
src/mesa/main/texgetimage.c | 105
++++++++++++++++++++++++--------------------
1 file changed, 58 insertions(+), 47 deletions(-)
diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index 03ad5f4..71c25bb 100644
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -74,12 +74,11 @@ type_needs_clamping(GLenum type)
*/
static void
get_tex_depth(struct gl_context *ctx, GLuint dimensions,
+ GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLsizei height, GLint depth,
GLenum format, GLenum type, GLvoid *pixels,
struct gl_texture_image *texImage)
{
- const GLint width = texImage->Width;
- GLint height = texImage->Height;
- GLint depth = texImage->Depth;
GLint img, row;
GLfloat *depthRow = malloc(width * sizeof(GLfloat));
@@ -98,9 +97,9 @@ get_tex_depth(struct gl_context *ctx, GLuint
dimensions,
GLint srcRowStride;
You are not checking here to make sure that zoffset + img < depth. I
looked in the next patch (implement _mesa_GetTextureSubImage) and found
that the dimensions_error_check does this. It might be good to make a
note of that here.
I've added a comment and assertion there and before similar loops.
/* map src texture buffer */
- ctx->Driver.MapTextureImage(ctx, texImage, img,
- 0, 0, width, height, GL_MAP_READ_BIT,
- &srcMap, &srcRowStride);
+ ctx->Driver.MapTextureImage(ctx, texImage, zoffset + img,
+ xoffset, yoffset, width, height,
+ GL_MAP_READ_BIT, &srcMap,
&srcRowStride);
if (srcMap) {
for (row = 0; row < height; row++) {
Why didn't you update ctx->Driver.UnmapTextureImage(ctx, texImage, img)
to take zoffset + img here? You did that for
get_tex_rgba_uncompressed. Is there some reason that it has to be
UnmapTextureImage(.. img only) for all of the other functions?
Those were oversights. Fixed now. I'll post a v2 patch.
Thanks.
-Brian
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