From eb65d4b84d4c514bfa9114a56a08513efabbe030 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Fri, 13 Dec 2013 14:12:09 -0800 Subject: [PATCH] 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 Reviewed-by: Brian Paul --- 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 3479eb16d6f..1d870d2980f 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 */ -- 2.30.2