The opcodes are bf2u, bf2i, bi2f and bu2f, with "b" meaning bitwise
conversions.
Signed-off-by: Olivier Galibert <galib...@pobox.com>
---
src/glsl/builtins/ir/floatBitsToInt.ir | 21 +++++++++++++++++++
src/glsl/builtins/ir/floatBitsToUint.ir | 21 +++++++++++++++++++
src/glsl/builtins/ir/intBitsToFloat.ir | 21 +++++++++++++++++++
src/glsl/builtins/ir/uintBitsToFloat.ir | 21 +++++++++++++++++++
.../builtins/profiles/ARB_shader_bit_encoding.glsl | 22 ++++++++++++++++++++
src/glsl/ir.cpp | 4 ++++
src/glsl/ir.h | 4 ++++
7 files changed, 114 insertions(+)
create mode 100644 src/glsl/builtins/ir/floatBitsToInt.ir
create mode 100644 src/glsl/builtins/ir/floatBitsToUint.ir
create mode 100644 src/glsl/builtins/ir/intBitsToFloat.ir
create mode 100644 src/glsl/builtins/ir/uintBitsToFloat.ir
create mode 100644 src/glsl/builtins/profiles/ARB_shader_bit_encoding.glsl
diff --git a/src/glsl/builtins/ir/floatBitsToInt.ir
b/src/glsl/builtins/ir/floatBitsToInt.ir
new file mode 100644
index 0000000..3811fac
--- /dev/null
+++ b/src/glsl/builtins/ir/floatBitsToInt.ir
@@ -0,0 +1,21 @@
+((function floatBitsToInt
+ (signature int
+ (parameters
+ (declare (in) float arg))
+ ((return (expression int bf2i (var_ref arg)))))
+
+ (signature ivec2
+ (parameters
+ (declare (in) vec2 arg))
+ ((return (expression ivec2 bf2i (var_ref arg)))))
+
+ (signature ivec3
+ (parameters
+ (declare (in) vec3 arg))
+ ((return (expression ivec3 bf2i (var_ref arg)))))
+
+ (signature ivec4
+ (parameters
+ (declare (in) vec4 arg))
+ ((return (expression ivec4 bf2i (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/floatBitsToUint.ir
b/src/glsl/builtins/ir/floatBitsToUint.ir
new file mode 100644
index 0000000..7b33740
--- /dev/null
+++ b/src/glsl/builtins/ir/floatBitsToUint.ir
@@ -0,0 +1,21 @@
+((function floatBitsToUint
+ (signature uint
+ (parameters
+ (declare (in) float arg))
+ ((return (expression uint bf2u (var_ref arg)))))
+
+ (signature uvec2
+ (parameters
+ (declare (in) vec2 arg))
+ ((return (expression uvec2 bf2u (var_ref arg)))))
+
+ (signature uvec3
+ (parameters
+ (declare (in) vec3 arg))
+ ((return (expression uvec3 bf2u (var_ref arg)))))
+
+ (signature uvec4
+ (parameters
+ (declare (in) vec4 arg))
+ ((return (expression uvec4 bf2u (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/intBitsToFloat.ir
b/src/glsl/builtins/ir/intBitsToFloat.ir
new file mode 100644
index 0000000..05e359b
--- /dev/null
+++ b/src/glsl/builtins/ir/intBitsToFloat.ir
@@ -0,0 +1,21 @@
+((function intBitsToFloat
+ (signature float
+ (parameters
+ (declare (in) int arg))
+ ((return (expression float bi2f (var_ref arg)))))
+
+ (signature vec2
+ (parameters
+ (declare (in) ivec2 arg))
+ ((return (expression vec2 bi2f (var_ref arg)))))
+
+ (signature vec3
+ (parameters
+ (declare (in) ivec3 arg))
+ ((return (expression vec3 bi2f (var_ref arg)))))
+
+ (signature vec4
+ (parameters
+ (declare (in) ivec4 arg))
+ ((return (expression vec4 bi2f (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/uintBitsToFloat.ir
b/src/glsl/builtins/ir/uintBitsToFloat.ir
new file mode 100644
index 0000000..46eb263
--- /dev/null
+++ b/src/glsl/builtins/ir/uintBitsToFloat.ir
@@ -0,0 +1,21 @@
+((function uintBitsToFloat
+ (signature float
+ (parameters
+ (declare (in) uint arg))
+ ((return (expression float bu2f (var_ref arg)))))
+
+ (signature vec2
+ (parameters
+ (declare (in) uvec2 arg))
+ ((return (expression vec2 bu2f (var_ref arg)))))
+
+ (signature vec3
+ (parameters
+ (declare (in) uvec3 arg))
+ ((return (expression vec3 bu2f (var_ref arg)))))
+
+ (signature vec4
+ (parameters
+ (declare (in) uvec4 arg))
+ ((return (expression vec4 bu2f (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/profiles/ARB_shader_bit_encoding.glsl
b/src/glsl/builtins/profiles/ARB_shader_bit_encoding.glsl
new file mode 100644
index 0000000..e034594
--- /dev/null
+++ b/src/glsl/builtins/profiles/ARB_shader_bit_encoding.glsl
@@ -0,0 +1,22 @@
+#version 130
+#extension GL_ARB_shader_bit_encoding : enable
+
+int floatBitsToInt(float value);
+ivec2 floatBitsToInt(vec2 value);
+ivec3 floatBitsToInt(vec3 value);
+ivec4 floatBitsToInt(vec4 value);
+
+uint floatBitsToUint(float value);
+uvec2 floatBitsToUint(vec2 value);
+uvec3 floatBitsToUint(vec3 value);
+uvec4 floatBitsToUint(vec4 value);
+
+float intBitsToFloat(int value);
+vec2 intBitsToFloat(ivec2 value);
+vec3 intBitsToFloat(ivec3 value);
+vec4 intBitsToFloat(ivec4 value);
+
+float uintBitsToFloat(uint value);
+vec2 uintBitsToFloat(uvec2 value);
+vec3 uintBitsToFloat(uvec3 value);
+vec4 uintBitsToFloat(uvec4 value);
diff --git a/src/glsl/ir.cpp b/src/glsl/ir.cpp
index 782d19a..edff9b6 100644
--- a/src/glsl/ir.cpp
+++ b/src/glsl/ir.cpp
@@ -428,6 +428,10 @@ static const char *const operator_strs[] = {
"u2f",
"i2u",
"u2i",
+ "bi2f",
+ "bf2i",
+ "bu2f",
+ "bf2u",
"any",
"trunc",
"ceil",
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 9db6c84..6808a94 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -858,6 +858,10 @@ enum ir_expression_operation {
ir_unop_u2f, /**< Unsigned-to-float conversion. */
ir_unop_i2u, /**< Integer-to-unsigned conversion. */
ir_unop_u2i, /**< Unsigned-to-integer conversion. */
+ ir_unop_bi2f, /**< Bit-identical int-to-float "conversion" */
+ ir_unop_bf2i, /**< Bit-identical float-to-int "conversion" */
+ ir_unop_bu2f, /**< Bit-identical uint-to-float "conversion" */
+ ir_unop_bf2u, /**< Bit-identical float-to-uint "conversion" */
ir_unop_any,
/**
--
1.7.10.rc3.1.gb306
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