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ir_constant_expression: Extract dot product calculation for reuse.

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This commit is contained in:
Kenneth Graunke
2010-07-21 20:09:21 -07:00
parent 4b1d77ea96
commit ffcec13599
1 changed files with 14 additions and 7 deletions
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21
src/glsl/ir_constant_expression.cpp
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@@ -39,6 +39,18 @@
#include "ir_visitor.h"
#include "glsl_types.h"
static float
dot(ir_constant *op0, ir_constant *op1)
{
assert(op0->type->is_float() && op1->type->is_float());
float result = 0;
for (unsigned c = 0; c < op0->type->components(); c++)
result += op0->value.f[c] * op1->value.f[c];
return result;
}
ir_constant *
ir_expression::constant_expression_value()
{
@@ -326,14 +338,9 @@ ir_expression::constant_expression_value()
break;
case ir_binop_dot:
assert(op[0]->type->is_vector() && op[1]->type->is_vector());
assert(op[0]->type->is_float() && op[1]->type->is_float());
data.f[0] = 0;
for (unsigned c = 0; c < op[0]->type->components(); c++) {
data.f[0] += op[0]->value.f[c] * op[1]->value.f[c];
}
data.f[0] = dot(op[0], op[1]);
break;
case ir_binop_min:
assert(op[0]->type == op[1]->type || op0_scalar || op1_scalar);
for (unsigned c = 0, c0 = 0, c1 = 0;