On 09/25/2014 03:56 PM, Anuj Phogat wrote:
On Thu, Sep 25, 2014 at 6:52 AM, Brian Paul <[email protected]> wrote:
Use Mesa's UBYTE_TO_FLOAT_TEX() arithmetic. This lets Mesa pass the
I think you mean BYTE_TO_FLOAT_TEX() here.
Yes, thanks. I'll fix that.
test. No regression with nvidia's driver either.
---
tests/general/draw-pixels.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/general/draw-pixels.c b/tests/general/draw-pixels.c
index 27b1675..65f5122 100644
--- a/tests/general/draw-pixels.c
+++ b/tests/general/draw-pixels.c
@@ -37,7 +37,7 @@
#define UBYTE_TO_FLOAT(u) ((float) u / 255.0F)
/** Convert GLbyte in [-128,127] to GLfloat in [-1.0,1.0] */
-#define BYTE_TO_FLOAT(B) ((2.0F * (B) + 1.0F) * (1.0F/255.0F))
+#define BYTE_TO_FLOAT(B) ((B) == -128 ? -1.0F : (B) * (1.0F/127.0F))
/** Convert GLushort in [0,65535] to GLfloat in [0.0,1.0] */
#define USHORT_TO_FLOAT(S) ((GLfloat) (S) * (1.0F / 65535.0F))
--
1.7.10.4
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Both patches are:
Reviewed-by: Anuj Phogat <[email protected]>
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