Mesa (master): u_vbuf: Add a few more format fallbacks.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: e2f66315cbf234779b195b6f7390ea9b11b288ad
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e2f66315cbf234779b195b6f7390ea9b11b288ad

Author: Eric Anholt <eric at anholt.net>
Date:   Fri Aug 22 10:50:15 2014 -0700

u_vbuf: Add a few more format fallbacks.

Fixes piglit draw-vertices and gl-2.0-vertexattribpointer on vc4, where
I'm only advertising R32F to RGBA32F support so far.

Note: regresses gl-1.5-normal3b3s-invariance due to introduced flushes and
missing depth buffer load/store support in the driver.

Reviewed-by: Marek Olšák <marek.olsak at amd.com>

---

 src/gallium/auxiliary/util/u_vbuf.c |   32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_vbuf.c b/src/gallium/auxiliary/util/u_vbuf.c
index 26017fa..4bee899 100644
--- a/src/gallium/auxiliary/util/u_vbuf.c
+++ b/src/gallium/auxiliary/util/u_vbuf.c
@@ -222,6 +222,38 @@ static const struct {
    { PIPE_FORMAT_R32G32_SSCALED,       PIPE_FORMAT_R32G32_FLOAT },
    { PIPE_FORMAT_R32G32B32_SSCALED,    PIPE_FORMAT_R32G32B32_FLOAT },
    { PIPE_FORMAT_R32G32B32A32_SSCALED, PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R16_UNORM,            PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R16G16_UNORM,         PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R16G16B16_UNORM,      PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R16G16B16A16_UNORM,   PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R16_SNORM,            PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R16G16_SNORM,         PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R16G16B16_SNORM,      PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R16G16B16A16_SNORM,   PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R16_USCALED,          PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R16G16_USCALED,       PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R16G16B16_USCALED,    PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R16G16B16A16_USCALED, PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R16_SSCALED,          PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R16G16_SSCALED,       PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R16G16B16_SSCALED,    PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R8_UNORM,             PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R8G8_UNORM,           PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R8G8B8_UNORM,         PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R8G8B8A8_UNORM,       PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R8_SNORM,             PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R8G8_SNORM,           PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R8G8B8_SNORM,         PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R8G8B8A8_SNORM,       PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R8_USCALED,           PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R8G8_USCALED,         PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R8G8B8_USCALED,       PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R8G8B8A8_USCALED,     PIPE_FORMAT_R32G32B32A32_FLOAT },
+   { PIPE_FORMAT_R8_SSCALED,           PIPE_FORMAT_R32_FLOAT },
+   { PIPE_FORMAT_R8G8_SSCALED,         PIPE_FORMAT_R32G32_FLOAT },
+   { PIPE_FORMAT_R8G8B8_SSCALED,       PIPE_FORMAT_R32G32B32_FLOAT },
+   { PIPE_FORMAT_R8G8B8A8_SSCALED,     PIPE_FORMAT_R32G32B32A32_FLOAT },
 };
 
 boolean u_vbuf_get_caps(struct pipe_screen *screen, struct u_vbuf_caps *caps)