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ir_to_mesa: Fix matrix * scalar multiplication.

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We're accessing in terms of columns, so we need to do MUL/MAD/MAD/MAD
instead of DP4s.

Fixes:
glsl-fs-exp2
glsl-fs-log2
glsl-fs-mix-constant
glsl-fs-sqrt-zero
glsl-vs-sqrt-zero
This commit is contained in:
Eric Anholt
2010-06-28 19:56:53 -07:00
parent ad2dc740b9
commit 3f3f41357d
1 changed files with 13 additions and 7 deletions
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20
src/mesa/shader/ir_to_mesa.cpp
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@@ -589,15 +589,21 @@ ir_to_mesa_visitor::visit(ir_expression *ir)
src_column.index++;
}
} else {
ir_to_mesa_dst_reg dst_chan = result_dst;
ir_to_mesa_src_reg src_column = op[0];
ir_to_mesa_src_reg src_chan = op[1];
for (int i = 0; i < ir->operands[0]->type->matrix_columns; i++) {
dst_chan.writemask = (1 << i);
src_chan.swizzle = MAKE_SWIZZLE4(i, i, i, i);
ir_to_mesa_emit_op2(ir, OPCODE_MUL,
dst_chan, src_column, src_chan);
src_column.index++;
assert(!ir->operands[1]->type->is_matrix() ||
!"FINISHME: matrix * matrix");
for (int i = 0; i < ir->operands[0]->type->matrix_columns; i++) {
src_chan.swizzle = MAKE_SWIZZLE4(i, i, i, i);
if (i == 0) {
ir_to_mesa_emit_op2(ir, OPCODE_MUL,
result_dst, src_column, src_chan);
} else {
ir_to_mesa_emit_op3(ir, OPCODE_MAD,
result_dst, src_column, src_chan,
result_src);
}
src_column.index++;
}
}
} else {