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-rw-r--r--src/3rdparty/angle/src/compiler/translator/BuiltInFunctionEmulatorGLSL.cpp293
1 files changed, 0 insertions, 293 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/BuiltInFunctionEmulatorGLSL.cpp b/src/3rdparty/angle/src/compiler/translator/BuiltInFunctionEmulatorGLSL.cpp
deleted file mode 100644
index 27ee04da35..0000000000
--- a/src/3rdparty/angle/src/compiler/translator/BuiltInFunctionEmulatorGLSL.cpp
+++ /dev/null
@@ -1,293 +0,0 @@
-//
-// Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-
-#include "angle_gl.h"
-#include "compiler/translator/BuiltInFunctionEmulator.h"
-#include "compiler/translator/BuiltInFunctionEmulatorGLSL.h"
-#include "compiler/translator/Cache.h"
-#include "compiler/translator/SymbolTable.h"
-#include "compiler/translator/VersionGLSL.h"
-
-namespace sh
-{
-
-void InitBuiltInAbsFunctionEmulatorForGLSLWorkarounds(BuiltInFunctionEmulator *emu,
- sh::GLenum shaderType)
-{
- if (shaderType == GL_VERTEX_SHADER)
- {
- const TType *int1 = TCache::getType(EbtInt);
- emu->addEmulatedFunction(EOpAbs, int1, "int abs_emu(int x) { return x * sign(x); }");
- }
-}
-
-void InitBuiltInIsnanFunctionEmulatorForGLSLWorkarounds(BuiltInFunctionEmulator *emu,
- int targetGLSLVersion)
-{
- // isnan() is supported since GLSL 1.3.
- if (targetGLSLVersion < GLSL_VERSION_130)
- return;
-
- const TType *float1 = TCache::getType(EbtFloat);
- const TType *float2 = TCache::getType(EbtFloat, 2);
- const TType *float3 = TCache::getType(EbtFloat, 3);
- const TType *float4 = TCache::getType(EbtFloat, 4);
-
- // !(x > 0.0 || x < 0.0 || x == 0.0) will be optimized and always equal to false.
- emu->addEmulatedFunction(
- EOpIsNan, float1,
- "bool isnan_emu(float x) { return (x > 0.0 || x < 0.0) ? false : x != 0.0; }");
- emu->addEmulatedFunction(
- EOpIsNan, float2,
- "bvec2 isnan_emu(vec2 x)\n"
- "{\n"
- " bvec2 isnan;\n"
- " for (int i = 0; i < 2; i++)\n"
- " {\n"
- " isnan[i] = (x[i] > 0.0 || x[i] < 0.0) ? false : x[i] != 0.0;\n"
- " }\n"
- " return isnan;\n"
- "}\n");
- emu->addEmulatedFunction(
- EOpIsNan, float3,
- "bvec3 isnan_emu(vec3 x)\n"
- "{\n"
- " bvec3 isnan;\n"
- " for (int i = 0; i < 3; i++)\n"
- " {\n"
- " isnan[i] = (x[i] > 0.0 || x[i] < 0.0) ? false : x[i] != 0.0;\n"
- " }\n"
- " return isnan;\n"
- "}\n");
- emu->addEmulatedFunction(
- EOpIsNan, float4,
- "bvec4 isnan_emu(vec4 x)\n"
- "{\n"
- " bvec4 isnan;\n"
- " for (int i = 0; i < 4; i++)\n"
- " {\n"
- " isnan[i] = (x[i] > 0.0 || x[i] < 0.0) ? false : x[i] != 0.0;\n"
- " }\n"
- " return isnan;\n"
- "}\n");
-}
-
-void InitBuiltInAtanFunctionEmulatorForGLSLWorkarounds(BuiltInFunctionEmulator *emu)
-{
- const TType *float1 = TCache::getType(EbtFloat);
- auto floatFuncId = emu->addEmulatedFunction(
- EOpAtan, float1, float1,
- "emu_precision float atan_emu(emu_precision float y, emu_precision "
- "float x)\n"
- "{\n"
- " if (x > 0.0) return atan(y / x);\n"
- " else if (x < 0.0 && y >= 0.0) return atan(y / x) + 3.14159265;\n"
- " else if (x < 0.0 && y < 0.0) return atan(y / x) - 3.14159265;\n"
- " else return 1.57079632 * sign(y);\n"
- "}\n");
- for (int dim = 2; dim <= 4; ++dim)
- {
- const TType *floatVec = TCache::getType(EbtFloat, static_cast<unsigned char>(dim));
- std::stringstream ss;
- ss << "emu_precision vec" << dim << " atan_emu(emu_precision vec" << dim
- << " y, emu_precision vec" << dim << " x)\n"
- << "{\n"
- " return vec"
- << dim << "(";
- for (int i = 0; i < dim; ++i)
- {
- ss << "atan_emu(y[" << i << "], x[" << i << "])";
- if (i < dim - 1)
- {
- ss << ", ";
- }
- }
- ss << ");\n"
- "}\n";
- emu->addEmulatedFunctionWithDependency(floatFuncId, EOpAtan, floatVec, floatVec,
- ss.str().c_str());
- }
-}
-
-// Emulate built-in functions missing from GLSL 1.30 and higher
-void InitBuiltInFunctionEmulatorForGLSLMissingFunctions(BuiltInFunctionEmulator *emu,
- sh::GLenum shaderType,
- int targetGLSLVersion)
-{
- // Emulate packUnorm2x16 and unpackUnorm2x16 (GLSL 4.10)
- if (targetGLSLVersion < GLSL_VERSION_410)
- {
- const TType *float2 = TCache::getType(EbtFloat, 2);
- const TType *uint1 = TCache::getType(EbtUInt);
-
- // clang-format off
- emu->addEmulatedFunction(EOpPackUnorm2x16, float2,
- "uint packUnorm2x16_emu(vec2 v)\n"
- "{\n"
- " int x = int(round(clamp(v.x, 0.0, 1.0) * 65535.0));\n"
- " int y = int(round(clamp(v.y, 0.0, 1.0) * 65535.0));\n"
- " return uint((y << 16) | (x & 0xFFFF));\n"
- "}\n");
-
- emu->addEmulatedFunction(EOpUnpackUnorm2x16, uint1,
- "vec2 unpackUnorm2x16_emu(uint u)\n"
- "{\n"
- " float x = float(u & 0xFFFFu) / 65535.0;\n"
- " float y = float(u >> 16) / 65535.0;\n"
- " return vec2(x, y);\n"
- "}\n");
- // clang-format on
- }
-
- // Emulate packSnorm2x16, packHalf2x16, unpackSnorm2x16, and unpackHalf2x16 (GLSL 4.20)
- // by using floatBitsToInt, floatBitsToUint, intBitsToFloat, and uintBitsToFloat (GLSL 3.30).
- if (targetGLSLVersion >= GLSL_VERSION_330 && targetGLSLVersion < GLSL_VERSION_420)
- {
- const TType *float2 = TCache::getType(EbtFloat, 2);
- const TType *uint1 = TCache::getType(EbtUInt);
-
- // clang-format off
- emu->addEmulatedFunction(EOpPackSnorm2x16, float2,
- "uint packSnorm2x16_emu(vec2 v)\n"
- "{\n"
- " #if defined(GL_ARB_shading_language_packing)\n"
- " return packSnorm2x16(v);\n"
- " #else\n"
- " int x = int(round(clamp(v.x, -1.0, 1.0) * 32767.0));\n"
- " int y = int(round(clamp(v.y, -1.0, 1.0) * 32767.0));\n"
- " return uint((y << 16) | (x & 0xFFFF));\n"
- " #endif\n"
- "}\n");
- emu->addEmulatedFunction(EOpUnpackSnorm2x16, uint1,
- "#if !defined(GL_ARB_shading_language_packing)\n"
- " float fromSnorm(uint x)\n"
- " {\n"
- " int xi = (int(x) & 0x7FFF) - (int(x) & 0x8000);\n"
- " return clamp(float(xi) / 32767.0, -1.0, 1.0);\n"
- " }\n"
- "#endif\n"
- "\n"
- "vec2 unpackSnorm2x16_emu(uint u)\n"
- "{\n"
- " #if defined(GL_ARB_shading_language_packing)\n"
- " return unpackSnorm2x16(u);\n"
- " #else\n"
- " uint y = (u >> 16);\n"
- " uint x = u;\n"
- " return vec2(fromSnorm(x), fromSnorm(y));\n"
- " #endif\n"
- "}\n");
- // Functions uint f32tof16(float val) and float f16tof32(uint val) are
- // based on the OpenGL redbook Appendix Session "Floating-Point Formats Used in OpenGL".
- emu->addEmulatedFunction(EOpPackHalf2x16, float2,
- "#if !defined(GL_ARB_shading_language_packing)\n"
- " uint f32tof16(float val)\n"
- " {\n"
- " uint f32 = floatBitsToUint(val);\n"
- " uint f16 = 0u;\n"
- " uint sign = (f32 >> 16) & 0x8000u;\n"
- " int exponent = int((f32 >> 23) & 0xFFu) - 127;\n"
- " uint mantissa = f32 & 0x007FFFFFu;\n"
- " if (exponent == 128)\n"
- " {\n"
- " // Infinity or NaN\n"
- " // NaN bits that are masked out by 0x3FF get discarded.\n"
- " // This can turn some NaNs to infinity, but this is allowed by the spec.\n"
- " f16 = sign | (0x1Fu << 10);\n"
- " f16 |= (mantissa & 0x3FFu);\n"
- " }\n"
- " else if (exponent > 15)\n"
- " {\n"
- " // Overflow - flush to Infinity\n"
- " f16 = sign | (0x1Fu << 10);\n"
- " }\n"
- " else if (exponent > -15)\n"
- " {\n"
- " // Representable value\n"
- " exponent += 15;\n"
- " mantissa >>= 13;\n"
- " f16 = sign | uint(exponent << 10) | mantissa;\n"
- " }\n"
- " else\n"
- " {\n"
- " f16 = sign;\n"
- " }\n"
- " return f16;\n"
- " }\n"
- "#endif\n"
- "\n"
- "uint packHalf2x16_emu(vec2 v)\n"
- "{\n"
- " #if defined(GL_ARB_shading_language_packing)\n"
- " return packHalf2x16(v);\n"
- " #else\n"
- " uint x = f32tof16(v.x);\n"
- " uint y = f32tof16(v.y);\n"
- " return (y << 16) | x;\n"
- " #endif\n"
- "}\n");
- emu->addEmulatedFunction(EOpUnpackHalf2x16, uint1,
- "#if !defined(GL_ARB_shading_language_packing)\n"
- " float f16tof32(uint val)\n"
- " {\n"
- " uint sign = (val & 0x8000u) << 16;\n"
- " int exponent = int((val & 0x7C00u) >> 10);\n"
- " uint mantissa = val & 0x03FFu;\n"
- " float f32 = 0.0;\n"
- " if(exponent == 0)\n"
- " {\n"
- " if (mantissa != 0u)\n"
- " {\n"
- " const float scale = 1.0 / (1 << 24);\n"
- " f32 = scale * mantissa;\n"
- " }\n"
- " }\n"
- " else if (exponent == 31)\n"
- " {\n"
- " return uintBitsToFloat(sign | 0x7F800000u | mantissa);\n"
- " }\n"
- " else\n"
- " {\n"
- " exponent -= 15;\n"
- " float scale;\n"
- " if(exponent < 0)\n"
- " {\n"
- " // The negative unary operator is buggy on OSX.\n"
- " // Work around this by using abs instead.\n"
- " scale = 1.0 / (1 << abs(exponent));\n"
- " }\n"
- " else\n"
- " {\n"
- " scale = 1 << exponent;\n"
- " }\n"
- " float decimal = 1.0 + float(mantissa) / float(1 << 10);\n"
- " f32 = scale * decimal;\n"
- " }\n"
- "\n"
- " if (sign != 0u)\n"
- " {\n"
- " f32 = -f32;\n"
- " }\n"
- "\n"
- " return f32;\n"
- " }\n"
- "#endif\n"
- "\n"
- "vec2 unpackHalf2x16_emu(uint u)\n"
- "{\n"
- " #if defined(GL_ARB_shading_language_packing)\n"
- " return unpackHalf2x16(u);\n"
- " #else\n"
- " uint y = (u >> 16);\n"
- " uint x = u & 0xFFFFu;\n"
- " return vec2(f16tof32(x), f16tof32(y));\n"
- " #endif\n"
- "}\n");
- // clang-format on
- }
-}
-
-} // namespace sh
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