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| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-01-10 12:15:24 +0100 |
|---|---|---|
| committer | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-01-10 15:59:55 +0100 |
| commit | a07e4c9ce0c1687239301566bd0a05f91e65a24b (patch) | |
| tree | 07611f99d82eb8ca018ce035465d491f05ba90f0 | |
| parent | 41969f0d068e15730c8b22d79293cc36cb414da6 (diff) | |
radeonsi: fix the offset in cube map coordinate conversion
The correct offset is really 0.5, both intuitively and according to the
formulas in Section 8.13 (Cube Map Texture Selection) of the OpenGL spec.
This mistake probably never hurt because wrap-around is constrained to
individual cube faces.
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c index 0a49bc2b2c..277ed5bf20 100644 --- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c +++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c @@ -961,7 +961,7 @@ static void si_llvm_cube_to_2d_coords(struct lp_build_tgsi_context *bld_base, coords[2] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_RCP, coords[2]); mad_args[1] = coords[2]; - mad_args[2] = LLVMConstReal(type, 1.5); + mad_args[2] = LLVMConstReal(type, 0.5); mad_args[0] = coords[0]; coords[0] = lp_build_emit_llvm_ternary(bld_base, TGSI_OPCODE_MAD, |