From 500dcbb1aa991d4c92200fcacd6eb288bb2638d7 Mon Sep 17 00:00:00 2001
From: Olivier Galibert <galibert@pobox.com>
Date: Tue, 8 May 2012 20:40:32 +0200
Subject: glsl: New unary opcodes for ARB_shader_bit_encoding support.

The opcodes are bitcast_f2u, bitcast_f2i, bitcast_i2f and bitcast_u2f.

Signed-off-by: Olivier Galibert <galibert@pobox.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---
 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 ++++++++++++++++++++++
 5 files changed, 106 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

(limited to 'src/glsl/builtins')

diff --git a/src/glsl/builtins/ir/floatBitsToInt.ir b/src/glsl/builtins/ir/floatBitsToInt.ir
new file mode 100644
index 00000000000..a5db4b3269a
--- /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 bitcast_f2i (var_ref arg)))))
+
+   (signature ivec2
+     (parameters
+       (declare (in) vec2 arg))
+     ((return (expression ivec2 bitcast_f2i (var_ref arg)))))
+
+   (signature ivec3
+     (parameters
+       (declare (in) vec3 arg))
+     ((return (expression ivec3 bitcast_f2i (var_ref arg)))))
+
+   (signature ivec4
+     (parameters
+       (declare (in) vec4 arg))
+     ((return (expression ivec4 bitcast_f2i (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/floatBitsToUint.ir b/src/glsl/builtins/ir/floatBitsToUint.ir
new file mode 100644
index 00000000000..09463bd9a75
--- /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 bitcast_f2u (var_ref arg)))))
+
+   (signature uvec2
+     (parameters
+       (declare (in) vec2 arg))
+     ((return (expression uvec2 bitcast_f2u (var_ref arg)))))
+
+   (signature uvec3
+     (parameters
+       (declare (in) vec3 arg))
+     ((return (expression uvec3 bitcast_f2u (var_ref arg)))))
+
+   (signature uvec4
+     (parameters
+       (declare (in) vec4 arg))
+     ((return (expression uvec4 bitcast_f2u (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/intBitsToFloat.ir b/src/glsl/builtins/ir/intBitsToFloat.ir
new file mode 100644
index 00000000000..cc6aafe1adc
--- /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 bitcast_i2f (var_ref arg)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) ivec2 arg))
+     ((return (expression vec2 bitcast_i2f (var_ref arg)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) ivec3 arg))
+     ((return (expression vec3 bitcast_i2f (var_ref arg)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) ivec4 arg))
+     ((return (expression vec4 bitcast_i2f (var_ref arg)))))
+))
diff --git a/src/glsl/builtins/ir/uintBitsToFloat.ir b/src/glsl/builtins/ir/uintBitsToFloat.ir
new file mode 100644
index 00000000000..1073d761898
--- /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 bitcast_u2f (var_ref arg)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) uvec2 arg))
+     ((return (expression vec2 bitcast_u2f (var_ref arg)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) uvec3 arg))
+     ((return (expression vec3 bitcast_u2f (var_ref arg)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) uvec4 arg))
+     ((return (expression vec4 bitcast_u2f (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 00000000000..e0345940157
--- /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);
-- 
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