+ if (devinfo->gen >= 8 && !(INTEL_DEBUG & DEBUG_VEC4VS))
+ compiler->scalar_vs = true;
+
+ nir_shader_compiler_options *nir_options =
+ rzalloc(compiler, nir_shader_compiler_options);
+ nir_options->native_integers = true;
+ /* In order to help allow for better CSE at the NIR level we tell NIR
+ * to split all ffma instructions during opt_algebraic and we then
+ * re-combine them as a later step.
+ */
+ nir_options->lower_ffma = true;
+ nir_options->lower_sub = true;
+
+ /* We want the GLSL compiler to emit code that uses condition codes */
+ for (int i = 0; i < MESA_SHADER_STAGES; i++) {
+ compiler->glsl_compiler_options[i].MaxUnrollIterations = 32;
+ compiler->glsl_compiler_options[i].MaxIfDepth =
+ devinfo->gen < 6 ? 16 : UINT_MAX;
+
+ compiler->glsl_compiler_options[i].EmitCondCodes = true;
+ compiler->glsl_compiler_options[i].EmitNoNoise = true;
+ compiler->glsl_compiler_options[i].EmitNoMainReturn = true;
+ compiler->glsl_compiler_options[i].EmitNoIndirectInput = true;
+ compiler->glsl_compiler_options[i].EmitNoIndirectOutput =
+ (i == MESA_SHADER_FRAGMENT);
+ compiler->glsl_compiler_options[i].EmitNoIndirectTemp =
+ (i == MESA_SHADER_FRAGMENT);
+ compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false;
+ compiler->glsl_compiler_options[i].LowerClipDistance = true;
+ }
+
+ compiler->glsl_compiler_options[MESA_SHADER_VERTEX].OptimizeForAOS = true;
+ compiler->glsl_compiler_options[MESA_SHADER_GEOMETRY].OptimizeForAOS = true;
+
+ if (compiler->scalar_vs) {
+ /* If we're using the scalar backend for vertex shaders, we need to
+ * configure these accordingly.
+ */
+ compiler->glsl_compiler_options[MESA_SHADER_VERTEX].EmitNoIndirectOutput = true;
+ compiler->glsl_compiler_options[MESA_SHADER_VERTEX].EmitNoIndirectTemp = true;
+ compiler->glsl_compiler_options[MESA_SHADER_VERTEX].OptimizeForAOS = false;
+
+ compiler->glsl_compiler_options[MESA_SHADER_VERTEX].NirOptions = nir_options;
+ }
+
+ compiler->glsl_compiler_options[MESA_SHADER_FRAGMENT].NirOptions = nir_options;
+ compiler->glsl_compiler_options[MESA_SHADER_COMPUTE].NirOptions = nir_options;
+