diff options
Diffstat (limited to 'src/mesa/main/pixel.c')
| -rw-r--r-- | src/mesa/main/pixel.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mesa/main/pixel.c b/src/mesa/main/pixel.c index eb4fd6e7c94..0e9915dd38f 100644 --- a/src/mesa/main/pixel.c +++ b/src/mesa/main/pixel.c @@ -1341,6 +1341,21 @@ _mesa_scale_and_bias_depth(const GLcontext *ctx, GLuint n, } +void +_mesa_scale_and_bias_depth_uint(const GLcontext *ctx, GLuint n, + GLuint depthValues[]) +{ + const GLdouble max = (double) 0xffffffff; + const GLdouble scale = ctx->Pixel.DepthScale; + const GLdouble bias = ctx->Pixel.DepthBias * max; + GLuint i; + for (i = 0; i < n; i++) { + GLdouble d = (GLdouble) depthValues[i] * scale + bias; + d = CLAMP(d, 0.0, max); + depthValues[i] = (GLuint) d; + } +} + /**********************************************************************/ /***** State Management *****/ |