Mesa (master): meta: Use NDC in decompress_texture_image
Ian Romanick
idr at kemper.freedesktop.org
Sun Feb 2 15:50:01 UTC 2014
Module: Mesa
Branch: master
Commit: eb65d4b84d4c514bfa9114a56a08513efabbe030
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=eb65d4b84d4c514bfa9114a56a08513efabbe030
Author: Ian Romanick <ian.d.romanick at intel.com>
Date: Fri Dec 13 14:12:09 2013 -0800
meta: Use NDC in decompress_texture_image
There is no need to use pixel coordinates, and using NDC directly will
simplify the GLSL paths.
Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Brian Paul <brianp at vmware.com>
---
src/mesa/drivers/common/meta.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 3479eb1..1d870d2 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -4108,18 +4108,17 @@ decompress_texture_image(struct gl_context *ctx,
verts[3].tex);
/* setup vertex positions */
- verts[0].x = 0.0F;
- verts[0].y = 0.0F;
- verts[1].x = width;
- verts[1].y = 0.0F;
- verts[2].x = width;
- verts[2].y = height;
- verts[3].x = 0.0F;
- verts[3].y = height;
+ verts[0].x = -1.0F;
+ verts[0].y = -1.0F;
+ verts[1].x = 1.0F;
+ verts[1].y = -1.0F;
+ verts[2].x = 1.0F;
+ verts[2].y = 1.0F;
+ verts[3].x = -1.0F;
+ verts[3].y = 1.0F;
_mesa_MatrixMode(GL_PROJECTION);
_mesa_LoadIdentity();
- _mesa_Ortho(0.0, width, 0.0, height, -1.0, 1.0);
_mesa_set_viewport(ctx, 0, 0, 0, width, height);
/* upload new vertex data */
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