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authorMatt Turner <mattst88@gmail.com>2013-04-23 17:19:06 -0700
committerMatt Turner <mattst88@gmail.com>2013-08-27 15:03:30 -0700
commitd55c543c3637fec784518f34b1f12e7a73be2281 (patch)
tree1a15ea60c074d916df2971af7803426ac08d0672
parent6829c18609fc3c979133b462173141dd7dfd09c3 (diff)
glsl: Add support for new fma built-in in ARB_gpu_shader5.
v2: Add constant folding support. Reviewed-by: Paul Berry <stereotype441@gmail.com> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
-rw-r--r--src/glsl/ir.cpp1
-rw-r--r--src/glsl/ir.h7
-rw-r--r--src/glsl/ir_constant_expression.cpp11
-rw-r--r--src/glsl/ir_validate.cpp1
-rw-r--r--src/mesa/program/ir_to_mesa.cpp1
-rw-r--r--src/mesa/state_tracker/st_glsl_to_tgsi.cpp1
6 files changed, 22 insertions, 0 deletions
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 99dceacf85f..c6d96d8da03 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -515,6 +515,7 @@ static const char *const operator_strs[] = {
"bfm",
"ubo_load",
"vector_extract",
+ "fma",
"lrp",
"bfi",
"bitfield_extract",
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 62e3b27ca92..b45e6cbd831 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -1169,6 +1169,13 @@ enum ir_expression_operation {
*/
ir_last_binop = ir_binop_vector_extract,
+ /**
+ * \name Fused floating-point multiply-add, part of ARB_gpu_shader5.
+ */
+ /*@{*/
+ ir_triop_fma,
+ /*@}*/
+
ir_triop_lrp,
/**
diff --git a/src/glsl/ir_constant_expression.cpp b/src/glsl/ir_constant_expression.cpp
index 0a725b45bc4..bf019b95577 100644
--- a/src/glsl/ir_constant_expression.cpp
+++ b/src/glsl/ir_constant_expression.cpp
@@ -1375,6 +1375,17 @@ ir_expression::constant_expression_value(struct hash_table *variable_context)
break;
}
+ case ir_triop_fma:
+ assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+ assert(op[1]->type->base_type == GLSL_TYPE_FLOAT);
+ assert(op[2]->type->base_type == GLSL_TYPE_FLOAT);
+
+ for (unsigned c = 0; c < components; c++) {
+ data.f[c] = op[0]->value.f[c] * op[1]->value.f[c]
+ + op[2]->value.f[c];
+ }
+ break;
+
case ir_triop_lrp: {
assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(op[1]->type->base_type == GLSL_TYPE_FLOAT);
diff --git a/src/glsl/ir_validate.cpp b/src/glsl/ir_validate.cpp
index ce96f6855a7..37f26febe55 100644
--- a/src/glsl/ir_validate.cpp
+++ b/src/glsl/ir_validate.cpp
@@ -522,6 +522,7 @@ ir_validate::visit_leave(ir_expression *ir)
&& ir->operands[1]->type->is_integer());
break;
+ case ir_triop_fma:
case ir_triop_lrp:
assert(ir->operands[0]->type->base_type == GLSL_TYPE_FLOAT);
assert(ir->operands[0]->type == ir->operands[1]->type);
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index f612f41baff..340a4497fdd 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -1492,6 +1492,7 @@ ir_to_mesa_visitor::visit(ir_expression *ir)
case ir_binop_vector_extract:
case ir_binop_bfm:
+ case ir_triop_fma:
case ir_triop_bfi:
case ir_triop_bitfield_extract:
case ir_triop_vector_insert:
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 4e29e4500e9..37779d4e5e4 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1972,6 +1972,7 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
case ir_unop_find_msb:
case ir_unop_find_lsb:
case ir_binop_bfm:
+ case ir_triop_fma:
case ir_triop_bfi:
case ir_triop_bitfield_extract:
case ir_quadop_bitfield_insert: