On 08/22/2013 01:32 AM, Kenneth Graunke wrote:
_mesa_meta_begin() initializes the viewport based on the current
drawbuffer's width and height. This is probably the window size,
since it occurs before the meta operation binds any temporary buffers.
decompress_texture_image needs the viewport to be the size of the image
it's trying to draw. Otherwise, it may only draw part of the image.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68250
Signed-off-by: Kenneth Graunke <[email protected]>
Cc: Mak Nazecic-Andrlon <[email protected]>
---
src/mesa/drivers/common/meta.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 1a42b05..ecb52b9 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -4022,6 +4022,8 @@ decompress_texture_image(struct gl_context *ctx,
verts[3].x = 0.0F;
verts[3].y = height;
+ _mesa_set_viewport(ctx, 0, 0, width, height);
+
/* upload new vertex data */
_mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
Sorry, please ignore this patch - I forgot to Piglit it and it breaks a
lot of things.
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