diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2006-08-25 19:45:31 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2006-08-25 19:45:31 +0000 |
| commit | 473f1aca7f4eb1dbb70e93cc6bf9a555512cd552 (patch) | |
| tree | 58f4ac17f3078fa826cb5e528841e60d2c111561 | |
| parent | 439d59926ad8581bac74751b73b07268aa47ab65 (diff) | |
clamp result.depth to [0,1] if written to
| -rw-r--r-- | src/mesa/swrast/s_nvfragprog.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 826e71d45c..97dbed04a8 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -1491,7 +1491,12 @@ _swrast_exec_fragment_program( GLcontext *ctx, struct sw_span *span ) if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { const GLfloat depth = ctx->FragmentProgram.Machine.Outputs[FRAG_RESULT_DEPR][2]; - span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); + if (depth <= 0.0) + span->array->z[i] = 0; + else if (depth >= 1.0) + span->array->z[i] = ctx->DrawBuffer->_DepthMax; + else + span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); } } } |