_mesa_meta_begin() sets up an orthographic project and initializes the viewport based on the current drawbuffer's width and height. This is likely 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. v2: Actually set the projection properly too. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68250 Signed-off-by: Kenneth Graunke <[email protected]> Cc: Mak Nazecic-Andrlon <[email protected]> Cc: "9.1 9.2" <[email protected]> --- src/mesa/drivers/common/meta.c | 5 +++++ 1 file changed, 5 insertions(+) Okay, this one actually passes Piglit (on Ivybridge)! Sorry for the noise. diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index 1a42b05..798efa6 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -4022,6 +4022,11 @@ decompress_texture_image(struct gl_context *ctx, verts[3].x = 0.0F; verts[3].y = height; + _mesa_MatrixMode(GL_PROJECTION); + _mesa_LoadIdentity(); + _mesa_Ortho(0.0, width, 0.0, height, -1.0, 1.0); + _mesa_set_viewport(ctx, 0, 0, width, height); + /* upload new vertex data */ _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts); -- 1.8.3.4 _______________________________________________ mesa-dev mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-dev
