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ir_to_mesa: Add support for constant matrices (untested).

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This commit is contained in:
Eric Anholt
2010-07-07 17:49:05 -07:00
parent b4d0c0e0ee
commit ffd24b0a68
1 changed files with 33 additions and 2 deletions
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35
src/mesa/shader/ir_to_mesa.cpp
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@@ -1355,8 +1355,39 @@ ir_to_mesa_visitor::visit(ir_constant *ir)
GLfloat *values = stack_vals;
unsigned int i;
if (ir->type->is_matrix() || ir->type->is_array()) {
assert(!"FINISHME: array/matrix constants");
if (ir->type->is_array()) {
ir->print();
printf("\n");
assert(!"FINISHME: array constants");
}
if (ir->type->is_matrix()) {
/* Unfortunately, 4 floats is all we can get into
* _mesa_add_unnamed_constant. So, make a temp to store the
* matrix and move each constant value into it. If we get
* lucky, copy propagation will eliminate the extra moves.
*/
ir_to_mesa_src_reg mat = get_temp(glsl_type::vec4_type);
ir_to_mesa_dst_reg mat_column = ir_to_mesa_dst_reg_from_src(mat);
for (i = 0; i < ir->type->matrix_columns; i++) {
src_reg.file = PROGRAM_CONSTANT;
assert(ir->type->base_type == GLSL_TYPE_FLOAT);
values = &ir->value.f[i * ir->type->vector_elements];
src_reg.index = _mesa_add_unnamed_constant(this->prog->Parameters,
values,
ir->type->vector_elements,
&src_reg.swizzle);
src_reg.reladdr = false;
src_reg.negate = 0;
ir_to_mesa_emit_op1(ir, OPCODE_MOV, mat_column, src_reg);
mat_column.index++;
}
this->result = mat;
}
src_reg.file = PROGRAM_CONSTANT;