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Diffstat (limited to 'src/3rdparty/angle/src/compiler/translator/TranslatorGLSL.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/compiler/translator/TranslatorGLSL.cpp | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/src/3rdparty/angle/src/compiler/translator/TranslatorGLSL.cpp b/src/3rdparty/angle/src/compiler/translator/TranslatorGLSL.cpp deleted file mode 100644 index a14e69e5d5..0000000000 --- a/src/3rdparty/angle/src/compiler/translator/TranslatorGLSL.cpp +++ /dev/null @@ -1,339 +0,0 @@ -// -// Copyright (c) 2002-2013 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 "compiler/translator/TranslatorGLSL.h" - -#include "angle_gl.h" -#include "compiler/translator/BuiltInFunctionEmulatorGLSL.h" -#include "compiler/translator/EmulatePrecision.h" -#include "compiler/translator/ExtensionGLSL.h" -#include "compiler/translator/OutputGLSL.h" -#include "compiler/translator/RewriteTexelFetchOffset.h" -#include "compiler/translator/RewriteUnaryMinusOperatorFloat.h" -#include "compiler/translator/VersionGLSL.h" - -namespace sh -{ - -TranslatorGLSL::TranslatorGLSL(sh::GLenum type, ShShaderSpec spec, ShShaderOutput output) - : TCompiler(type, spec, output) -{ -} - -void TranslatorGLSL::initBuiltInFunctionEmulator(BuiltInFunctionEmulator *emu, - ShCompileOptions compileOptions) -{ - if (compileOptions & SH_EMULATE_ABS_INT_FUNCTION) - { - InitBuiltInAbsFunctionEmulatorForGLSLWorkarounds(emu, getShaderType()); - } - - if (compileOptions & SH_EMULATE_ISNAN_FLOAT_FUNCTION) - { - InitBuiltInIsnanFunctionEmulatorForGLSLWorkarounds(emu, getShaderVersion()); - } - - if (compileOptions & SH_EMULATE_ATAN2_FLOAT_FUNCTION) - { - InitBuiltInAtanFunctionEmulatorForGLSLWorkarounds(emu); - } - - int targetGLSLVersion = ShaderOutputTypeToGLSLVersion(getOutputType()); - InitBuiltInFunctionEmulatorForGLSLMissingFunctions(emu, getShaderType(), targetGLSLVersion); -} - -void TranslatorGLSL::translate(TIntermBlock *root, - ShCompileOptions compileOptions, - PerformanceDiagnostics * /*perfDiagnostics*/) -{ - TInfoSinkBase &sink = getInfoSink().obj; - - // Write GLSL version. - writeVersion(root); - - // Write extension behaviour as needed - writeExtensionBehavior(root, compileOptions); - - // Write pragmas after extensions because some drivers consider pragmas - // like non-preprocessor tokens. - writePragma(compileOptions); - - // If flattening the global invariant pragma, write invariant declarations for built-in - // variables. It should be harmless to do this twice in the case that the shader also explicitly - // did this. However, it's important to emit invariant qualifiers only for those built-in - // variables that are actually used, to avoid affecting the behavior of the shader. - if ((compileOptions & SH_FLATTEN_PRAGMA_STDGL_INVARIANT_ALL) != 0 && - getPragma().stdgl.invariantAll && - !sh::RemoveInvariant(getShaderType(), getShaderVersion(), getOutputType(), compileOptions)) - { - ASSERT(wereVariablesCollected()); - - switch (getShaderType()) - { - case GL_VERTEX_SHADER: - sink << "invariant gl_Position;\n"; - - // gl_PointSize should be declared invariant in both ESSL 1.00 and 3.00 fragment - // shaders if it's statically referenced. - conditionallyOutputInvariantDeclaration("gl_PointSize"); - break; - case GL_FRAGMENT_SHADER: - // The preprocessor will reject this pragma if it's used in ESSL 3.00 fragment - // shaders, so we can use simple logic to determine whether to declare these - // variables invariant. - conditionallyOutputInvariantDeclaration("gl_FragCoord"); - conditionallyOutputInvariantDeclaration("gl_PointCoord"); - break; - default: - // Currently not reached, but leave this in for future expansion. - ASSERT(false); - break; - } - } - - if ((compileOptions & SH_REWRITE_TEXELFETCHOFFSET_TO_TEXELFETCH) != 0) - { - sh::RewriteTexelFetchOffset(root, getSymbolTable(), getShaderVersion()); - } - - if ((compileOptions & SH_REWRITE_FLOAT_UNARY_MINUS_OPERATOR) != 0) - { - sh::RewriteUnaryMinusOperatorFloat(root); - } - - bool precisionEmulation = - getResources().WEBGL_debug_shader_precision && getPragma().debugShaderPrecision; - - if (precisionEmulation) - { - EmulatePrecision emulatePrecision(&getSymbolTable(), getShaderVersion()); - root->traverse(&emulatePrecision); - emulatePrecision.updateTree(); - emulatePrecision.writeEmulationHelpers(sink, getShaderVersion(), getOutputType()); - } - - // Write emulated built-in functions if needed. - if (!getBuiltInFunctionEmulator().isOutputEmpty()) - { - sink << "// BEGIN: Generated code for built-in function emulation\n\n"; - sink << "#define emu_precision\n\n"; - getBuiltInFunctionEmulator().outputEmulatedFunctions(sink); - sink << "// END: Generated code for built-in function emulation\n\n"; - } - - // Write array bounds clamping emulation if needed. - getArrayBoundsClamper().OutputClampingFunctionDefinition(sink); - - // Declare gl_FragColor and glFragData as webgl_FragColor and webgl_FragData - // if it's core profile shaders and they are used. - if (getShaderType() == GL_FRAGMENT_SHADER) - { - const bool mayHaveESSL1SecondaryOutputs = - IsExtensionEnabled(getExtensionBehavior(), TExtension::EXT_blend_func_extended) && - getShaderVersion() == 100; - const bool declareGLFragmentOutputs = IsGLSL130OrNewer(getOutputType()); - - bool hasGLFragColor = false; - bool hasGLFragData = false; - bool hasGLSecondaryFragColor = false; - bool hasGLSecondaryFragData = false; - - for (const auto &outputVar : outputVariables) - { - if (declareGLFragmentOutputs) - { - if (outputVar.name == "gl_FragColor") - { - ASSERT(!hasGLFragColor); - hasGLFragColor = true; - continue; - } - else if (outputVar.name == "gl_FragData") - { - ASSERT(!hasGLFragData); - hasGLFragData = true; - continue; - } - } - if (mayHaveESSL1SecondaryOutputs) - { - if (outputVar.name == "gl_SecondaryFragColorEXT") - { - ASSERT(!hasGLSecondaryFragColor); - hasGLSecondaryFragColor = true; - continue; - } - else if (outputVar.name == "gl_SecondaryFragDataEXT") - { - ASSERT(!hasGLSecondaryFragData); - hasGLSecondaryFragData = true; - continue; - } - } - } - ASSERT(!((hasGLFragColor || hasGLSecondaryFragColor) && - (hasGLFragData || hasGLSecondaryFragData))); - if (hasGLFragColor) - { - sink << "out vec4 webgl_FragColor;\n"; - } - if (hasGLFragData) - { - sink << "out vec4 webgl_FragData[gl_MaxDrawBuffers];\n"; - } - if (hasGLSecondaryFragColor) - { - sink << "out vec4 angle_SecondaryFragColor;\n"; - } - if (hasGLSecondaryFragData) - { - sink << "out vec4 angle_SecondaryFragData[" << getResources().MaxDualSourceDrawBuffers - << "];\n"; - } - } - - if (getShaderType() == GL_COMPUTE_SHADER && isComputeShaderLocalSizeDeclared()) - { - const sh::WorkGroupSize &localSize = getComputeShaderLocalSize(); - sink << "layout (local_size_x=" << localSize[0] << ", local_size_y=" << localSize[1] - << ", local_size_z=" << localSize[2] << ") in;\n"; - } - - if (getShaderType() == GL_GEOMETRY_SHADER_OES) - { - WriteGeometryShaderLayoutQualifiers( - sink, getGeometryShaderInputPrimitiveType(), getGeometryShaderInvocations(), - getGeometryShaderOutputPrimitiveType(), getGeometryShaderMaxVertices()); - } - - // Write translated shader. - TOutputGLSL outputGLSL(sink, getArrayIndexClampingStrategy(), getHashFunction(), getNameMap(), - &getSymbolTable(), getShaderType(), getShaderVersion(), getOutputType(), - compileOptions); - - if (compileOptions & SH_TRANSLATE_VIEWID_OVR_TO_UNIFORM) - { - TName uniformName(TString("ViewID_OVR")); - uniformName.setInternal(true); - sink << "uniform int " << outputGLSL.hashName(uniformName) << ";\n"; - } - - root->traverse(&outputGLSL); -} - -bool TranslatorGLSL::shouldFlattenPragmaStdglInvariantAll() -{ - // Required when outputting to any GLSL version greater than 1.20, but since ANGLE doesn't - // translate to that version, return true for the next higher version. - return IsGLSL130OrNewer(getOutputType()); -} - -bool TranslatorGLSL::shouldCollectVariables(ShCompileOptions compileOptions) -{ - return (compileOptions & SH_FLATTEN_PRAGMA_STDGL_INVARIANT_ALL) || - TCompiler::shouldCollectVariables(compileOptions); -} - -void TranslatorGLSL::writeVersion(TIntermNode *root) -{ - TVersionGLSL versionGLSL(getShaderType(), getPragma(), getOutputType()); - root->traverse(&versionGLSL); - int version = versionGLSL.getVersion(); - // We need to write version directive only if it is greater than 110. - // If there is no version directive in the shader, 110 is implied. - if (version > 110) - { - TInfoSinkBase &sink = getInfoSink().obj; - sink << "#version " << version << "\n"; - } -} - -void TranslatorGLSL::writeExtensionBehavior(TIntermNode *root, ShCompileOptions compileOptions) -{ - TInfoSinkBase &sink = getInfoSink().obj; - const TExtensionBehavior &extBehavior = getExtensionBehavior(); - for (const auto &iter : extBehavior) - { - if (iter.second == EBhUndefined) - { - continue; - } - - if (getOutputType() == SH_GLSL_COMPATIBILITY_OUTPUT) - { - // For GLSL output, we don't need to emit most extensions explicitly, - // but some we need to translate in GL compatibility profile. - if (iter.first == TExtension::EXT_shader_texture_lod) - { - sink << "#extension GL_ARB_shader_texture_lod : " << GetBehaviorString(iter.second) - << "\n"; - } - - if (iter.first == TExtension::EXT_draw_buffers) - { - sink << "#extension GL_ARB_draw_buffers : " << GetBehaviorString(iter.second) - << "\n"; - } - - if (iter.first == TExtension::OES_geometry_shader) - { - sink << "#extension GL_ARB_geometry_shader4 : " << GetBehaviorString(iter.second) - << "\n"; - } - } - - const bool isMultiview = (iter.first == TExtension::OVR_multiview); - if (isMultiview && getShaderType() == GL_VERTEX_SHADER && - (compileOptions & SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER) != 0u) - { - // Emit the NV_viewport_array2 extension in a vertex shader if the - // SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER option is set and the OVR_multiview(2) - // extension is requested. - sink << "#extension GL_NV_viewport_array2 : require\n"; - } - } - - // GLSL ES 3 explicit location qualifiers need to use an extension before GLSL 330 - if (getShaderVersion() >= 300 && getOutputType() < SH_GLSL_330_CORE_OUTPUT && - getShaderType() != GL_COMPUTE_SHADER) - { - sink << "#extension GL_ARB_explicit_attrib_location : require\n"; - } - - // Need to enable gpu_shader5 to have index constant sampler array indexing - if (getOutputType() != SH_ESSL_OUTPUT && getOutputType() < SH_GLSL_400_CORE_OUTPUT && - getShaderVersion() == 100) - { - // Don't use "require" on to avoid breaking WebGL 1 on drivers that silently - // support index constant sampler array indexing, but don't have the extension or - // on drivers that don't have the extension at all as it would break WebGL 1 for - // some users. - sink << "#extension GL_ARB_gpu_shader5 : enable\n"; - } - - TExtensionGLSL extensionGLSL(getOutputType()); - root->traverse(&extensionGLSL); - - for (const auto &ext : extensionGLSL.getEnabledExtensions()) - { - sink << "#extension " << ext << " : enable\n"; - } - for (const auto &ext : extensionGLSL.getRequiredExtensions()) - { - sink << "#extension " << ext << " : require\n"; - } -} - -void TranslatorGLSL::conditionallyOutputInvariantDeclaration(const char *builtinVaryingName) -{ - if (isVaryingDefined(builtinVaryingName)) - { - TInfoSinkBase &sink = getInfoSink().obj; - sink << "invariant " << builtinVaryingName << ";\n"; - } -} - -} // namespace sh |