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glsl_to_tgsi: implement ir_binop_all_equal and ir_binop_any_nequal for native integers

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This commit is contained in:
Bryan Cain
2011-09-19 16:46:44 -05:00
parent c662764f4f
commit 6da8c21124
1 changed files with 85 additions and 34 deletions
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src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+85 -34
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@@ -1528,15 +1528,45 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
st_src_reg temp = get_temp(native_integers ?
glsl_type::get_instance(ir->operands[0]->type->base_type, 4, 1) :
glsl_type::vec4_type);
assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT);
emit(ir, TGSI_OPCODE_SNE, st_dst_reg(temp), op[0], op[1]);
/* After the dot-product, the value will be an integer on the
* range [0,4]. Zero becomes 1.0, and positive values become zero.
*/
emit_dp(ir, result_dst, temp, temp, vector_elements);
if (result_dst.type == GLSL_TYPE_FLOAT) {
if (native_integers) {
st_dst_reg temp_dst = st_dst_reg(temp);
st_src_reg temp1 = st_src_reg(temp), temp2 = st_src_reg(temp);
emit(ir, TGSI_OPCODE_SEQ, st_dst_reg(temp), op[0], op[1]);
/* Emit 1-3 AND operations to combine the SEQ results. */
switch (ir->operands[0]->type->vector_elements) {
case 2:
break;
case 3:
temp_dst.writemask = WRITEMASK_Y;
temp1.swizzle = SWIZZLE_YYYY;
temp2.swizzle = SWIZZLE_ZZZZ;
emit(ir, TGSI_OPCODE_AND, temp_dst, temp1, temp2);
break;
case 4:
temp_dst.writemask = WRITEMASK_X;
temp1.swizzle = SWIZZLE_XXXX;
temp2.swizzle = SWIZZLE_YYYY;
emit(ir, TGSI_OPCODE_AND, temp_dst, temp1, temp2);
temp_dst.writemask = WRITEMASK_Y;
temp1.swizzle = SWIZZLE_ZZZZ;
temp2.swizzle = SWIZZLE_WWWW;
emit(ir, TGSI_OPCODE_AND, temp_dst, temp1, temp2);
}
temp1.swizzle = SWIZZLE_XXXX;
temp2.swizzle = SWIZZLE_YYYY;
emit(ir, TGSI_OPCODE_AND, result_dst, temp1, temp2);
} else {
emit(ir, TGSI_OPCODE_SNE, st_dst_reg(temp), op[0], op[1]);
/* After the dot-product, the value will be an integer on the
* range [0,4]. Zero becomes 1.0, and positive values become zero.
*/
emit_dp(ir, result_dst, temp, temp, vector_elements);
/* Negating the result of the dot-product gives values on the range
* [-4, 0]. Zero becomes 1.0, and negative values become zero.
* This is achieved using SGE.
@@ -1544,11 +1574,6 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
st_src_reg sge_src = result_src;
sge_src.negate = ~sge_src.negate;
emit(ir, TGSI_OPCODE_SGE, result_dst, sge_src, st_src_reg_for_float(0.0));
} else {
/* The TGSI negate flag doesn't work for integers, so use SEQ 0
* instead.
*/
emit(ir, TGSI_OPCODE_SEQ, result_dst, result_src, st_src_reg_for_int(0));
}
} else {
emit(ir, TGSI_OPCODE_SEQ, result_dst, op[0], op[1]);
@@ -1561,30 +1586,56 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
st_src_reg temp = get_temp(native_integers ?
glsl_type::get_instance(ir->operands[0]->type->base_type, 4, 1) :
glsl_type::vec4_type);
assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT);
emit(ir, TGSI_OPCODE_SNE, st_dst_reg(temp), op[0], op[1]);
/* After the dot-product, the value will be an integer on the
* range [0,4]. Zero stays zero, and positive values become 1.0.
*/
glsl_to_tgsi_instruction *const dp =
emit_dp(ir, result_dst, temp, temp, vector_elements);
if (this->prog->Target == GL_FRAGMENT_PROGRAM_ARB &&
result_dst.type == GLSL_TYPE_FLOAT) {
/* The clamping to [0,1] can be done for free in the fragment
* shader with a saturate.
*/
dp->saturate = true;
} else if (result_dst.type == GLSL_TYPE_FLOAT) {
/* Negating the result of the dot-product gives values on the range
* [-4, 0]. Zero stays zero, and negative values become 1.0. This
* achieved using SLT.
*/
st_src_reg slt_src = result_src;
slt_src.negate = ~slt_src.negate;
emit(ir, TGSI_OPCODE_SLT, result_dst, slt_src, st_src_reg_for_float(0.0));
if (native_integers) {
st_dst_reg temp_dst = st_dst_reg(temp);
st_src_reg temp1 = st_src_reg(temp), temp2 = st_src_reg(temp);
/* Emit 1-3 OR operations to combine the SNE results. */
switch (ir->operands[0]->type->vector_elements) {
case 2:
break;
case 3:
temp_dst.writemask = WRITEMASK_Y;
temp1.swizzle = SWIZZLE_YYYY;
temp2.swizzle = SWIZZLE_ZZZZ;
emit(ir, TGSI_OPCODE_OR, temp_dst, temp1, temp2);
break;
case 4:
temp_dst.writemask = WRITEMASK_X;
temp1.swizzle = SWIZZLE_XXXX;
temp2.swizzle = SWIZZLE_YYYY;
emit(ir, TGSI_OPCODE_OR, temp_dst, temp1, temp2);
temp_dst.writemask = WRITEMASK_Y;
temp1.swizzle = SWIZZLE_ZZZZ;
temp2.swizzle = SWIZZLE_WWWW;
emit(ir, TGSI_OPCODE_OR, temp_dst, temp1, temp2);
}
temp1.swizzle = SWIZZLE_XXXX;
temp2.swizzle = SWIZZLE_YYYY;
emit(ir, TGSI_OPCODE_OR, result_dst, temp1, temp2);
} else {
emit(ir, TGSI_OPCODE_SNE, result_dst, result_src, st_src_reg_for_int(0));
/* After the dot-product, the value will be an integer on the
* range [0,4]. Zero stays zero, and positive values become 1.0.
*/
glsl_to_tgsi_instruction *const dp =
emit_dp(ir, result_dst, temp, temp, vector_elements);
if (this->prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
/* The clamping to [0,1] can be done for free in the fragment
* shader with a saturate.
*/
dp->saturate = true;
} else {
/* Negating the result of the dot-product gives values on the range
* [-4, 0]. Zero stays zero, and negative values become 1.0. This
* achieved using SLT.
*/
st_src_reg slt_src = result_src;
slt_src.negate = ~slt_src.negate;
emit(ir, TGSI_OPCODE_SLT, result_dst, slt_src, st_src_reg_for_float(0.0));
}
}
} else {
emit(ir, TGSI_OPCODE_SNE, result_dst, op[0], op[1]);