diff options
author | Ian Romanick <ian.d.romanick@intel.com> | 2010-11-16 12:01:42 -0800 |
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committer | Ian Romanick <ian.d.romanick@intel.com> | 2010-11-19 15:00:26 -0800 |
commit | 11d6f1c69871d0b7edc28f639256460839fccd2d (patch) | |
tree | df65ce56f09c3eaeb78c4e8ba9d509e12f176dfa /src/glsl/ir_constant_expression.cpp | |
parent | 13f57d42b6929f50d8ef8b4123f46a61c46fde7b (diff) |
glsl: Add ir_quadop_vector expression
The vector operator collects 2, 3, or 4 scalar components into a
vector. Doing this has several advantages. First, it will make
ud-chain tracking for components of vectors much easier. Second, a
later optimization pass could collect scalars into vectors to allow
generation of SWZ instructions (or similar as operands to other
instructions on R200 and i915). It also enables an easy way to
generate IR for SWZ instructions in the ARB_vertex_program assembler.
Diffstat (limited to 'src/glsl/ir_constant_expression.cpp')
-rw-r--r-- | src/glsl/ir_constant_expression.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp index 1fe1505047..4fd6d09a3a 100644 --- a/src/glsl/ir_constant_expression.cpp +++ b/src/glsl/ir_constant_expression.cpp @@ -788,6 +788,24 @@ ir_expression::constant_expression_value() } break; + case ir_quadop_vector: + for (unsigned c = 0; c < this->type->vector_elements; c++) { + switch (this->type->base_type) { + case GLSL_TYPE_INT: + data.i[c] = op[c]->value.i[0]; + break; + case GLSL_TYPE_UINT: + data.u[c] = op[c]->value.u[0]; + break; + case GLSL_TYPE_FLOAT: + data.f[c] = op[c]->value.f[0]; + break; + default: + assert(0); + } + } + break; + default: /* FINISHME: Should handle all expression types. */ return NULL; |