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-rw-r--r--src/3rdparty/angle/src/compiler/ShaderLang.cpp285
1 files changed, 285 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/compiler/ShaderLang.cpp b/src/3rdparty/angle/src/compiler/ShaderLang.cpp
new file mode 100644
index 0000000000..56f5c7f2ec
--- /dev/null
+++ b/src/3rdparty/angle/src/compiler/ShaderLang.cpp
@@ -0,0 +1,285 @@
+//
+// 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.
+//
+
+//
+// Implement the top-level of interface to the compiler,
+// as defined in ShaderLang.h
+//
+
+#include "GLSLANG/ShaderLang.h"
+
+#include "compiler/InitializeDll.h"
+#include "compiler/preprocessor/length_limits.h"
+#include "compiler/ShHandle.h"
+
+//
+// This is the platform independent interface between an OGL driver
+// and the shading language compiler.
+//
+
+static bool checkActiveUniformAndAttribMaxLengths(const ShHandle handle,
+ int expectedValue)
+{
+ int activeUniformLimit = 0;
+ ShGetInfo(handle, SH_ACTIVE_UNIFORM_MAX_LENGTH, &activeUniformLimit);
+ int activeAttribLimit = 0;
+ ShGetInfo(handle, SH_ACTIVE_ATTRIBUTE_MAX_LENGTH, &activeAttribLimit);
+ return (expectedValue == activeUniformLimit && expectedValue == activeAttribLimit);
+}
+
+static bool checkMappedNameMaxLength(const ShHandle handle, int expectedValue)
+{
+ int mappedNameMaxLength = 0;
+ ShGetInfo(handle, SH_MAPPED_NAME_MAX_LENGTH, &mappedNameMaxLength);
+ return (expectedValue == mappedNameMaxLength);
+}
+
+static void getVariableInfo(ShShaderInfo varType,
+ const ShHandle handle,
+ int index,
+ int* length,
+ int* size,
+ ShDataType* type,
+ char* name,
+ char* mappedName)
+{
+ if (!handle || !size || !type || !name)
+ return;
+ ASSERT((varType == SH_ACTIVE_ATTRIBUTES) ||
+ (varType == SH_ACTIVE_UNIFORMS));
+
+ TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
+ TCompiler* compiler = base->getAsCompiler();
+ if (compiler == 0)
+ return;
+
+ const TVariableInfoList& varList = varType == SH_ACTIVE_ATTRIBUTES ?
+ compiler->getAttribs() : compiler->getUniforms();
+ if (index < 0 || index >= static_cast<int>(varList.size()))
+ return;
+
+ const TVariableInfo& varInfo = varList[index];
+ if (length) *length = varInfo.name.size();
+ *size = varInfo.size;
+ *type = varInfo.type;
+
+ // This size must match that queried by
+ // SH_ACTIVE_UNIFORM_MAX_LENGTH and SH_ACTIVE_ATTRIBUTE_MAX_LENGTH
+ // in ShGetInfo, below.
+ int activeUniformAndAttribLength = 1 + MAX_SYMBOL_NAME_LEN;
+ ASSERT(checkActiveUniformAndAttribMaxLengths(handle, activeUniformAndAttribLength));
+ strncpy(name, varInfo.name.c_str(), activeUniformAndAttribLength);
+ name[activeUniformAndAttribLength - 1] = 0;
+ if (mappedName) {
+ // This size must match that queried by
+ // SH_MAPPED_NAME_MAX_LENGTH in ShGetInfo, below.
+ int maxMappedNameLength = 1 + MAX_SYMBOL_NAME_LEN;
+ ASSERT(checkMappedNameMaxLength(handle, maxMappedNameLength));
+ strncpy(mappedName, varInfo.mappedName.c_str(), maxMappedNameLength);
+ mappedName[maxMappedNameLength - 1] = 0;
+ }
+}
+
+//
+// Driver must call this first, once, before doing any other
+// compiler operations.
+//
+int ShInitialize()
+{
+ if (!InitProcess())
+ return 0;
+
+ return 1;
+}
+
+//
+// Cleanup symbol tables
+//
+int ShFinalize()
+{
+ if (!DetachProcess())
+ return 0;
+
+ return 1;
+}
+
+//
+// Initialize built-in resources with minimum expected values.
+//
+void ShInitBuiltInResources(ShBuiltInResources* resources)
+{
+ // Constants.
+ resources->MaxVertexAttribs = 8;
+ resources->MaxVertexUniformVectors = 128;
+ resources->MaxVaryingVectors = 8;
+ resources->MaxVertexTextureImageUnits = 0;
+ resources->MaxCombinedTextureImageUnits = 8;
+ resources->MaxTextureImageUnits = 8;
+ resources->MaxFragmentUniformVectors = 16;
+ resources->MaxDrawBuffers = 1;
+
+ // Extensions.
+ resources->OES_standard_derivatives = 0;
+ resources->OES_EGL_image_external = 0;
+ resources->ARB_texture_rectangle = 0;
+}
+
+//
+// Driver calls these to create and destroy compiler objects.
+//
+ShHandle ShConstructCompiler(ShShaderType type, ShShaderSpec spec,
+ ShShaderOutput output,
+ const ShBuiltInResources* resources)
+{
+ if (!InitThread())
+ return 0;
+
+ TShHandleBase* base = static_cast<TShHandleBase*>(ConstructCompiler(type, spec, output));
+ TCompiler* compiler = base->getAsCompiler();
+ if (compiler == 0)
+ return 0;
+
+ // Generate built-in symbol table.
+ if (!compiler->Init(*resources)) {
+ ShDestruct(base);
+ return 0;
+ }
+
+ return reinterpret_cast<void*>(base);
+}
+
+void ShDestruct(ShHandle handle)
+{
+ if (handle == 0)
+ return;
+
+ TShHandleBase* base = static_cast<TShHandleBase*>(handle);
+
+ if (base->getAsCompiler())
+ DeleteCompiler(base->getAsCompiler());
+}
+
+//
+// Do an actual compile on the given strings. The result is left
+// in the given compile object.
+//
+// Return: The return value of ShCompile is really boolean, indicating
+// success or failure.
+//
+int ShCompile(
+ const ShHandle handle,
+ const char* const shaderStrings[],
+ const int numStrings,
+ int compileOptions)
+{
+ if (!InitThread())
+ return 0;
+
+ if (handle == 0)
+ return 0;
+
+ TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
+ TCompiler* compiler = base->getAsCompiler();
+ if (compiler == 0)
+ return 0;
+
+ bool success = compiler->compile(shaderStrings, numStrings, compileOptions);
+ return success ? 1 : 0;
+}
+
+void ShGetInfo(const ShHandle handle, ShShaderInfo pname, int* params)
+{
+ if (!handle || !params)
+ return;
+
+ TShHandleBase* base = static_cast<TShHandleBase*>(handle);
+ TCompiler* compiler = base->getAsCompiler();
+ if (!compiler) return;
+
+ switch(pname)
+ {
+ case SH_INFO_LOG_LENGTH:
+ *params = compiler->getInfoSink().info.size() + 1;
+ break;
+ case SH_OBJECT_CODE_LENGTH:
+ *params = compiler->getInfoSink().obj.size() + 1;
+ break;
+ case SH_ACTIVE_UNIFORMS:
+ *params = compiler->getUniforms().size();
+ break;
+ case SH_ACTIVE_UNIFORM_MAX_LENGTH:
+ *params = 1 + MAX_SYMBOL_NAME_LEN;
+ break;
+ case SH_ACTIVE_ATTRIBUTES:
+ *params = compiler->getAttribs().size();
+ break;
+ case SH_ACTIVE_ATTRIBUTE_MAX_LENGTH:
+ *params = 1 + MAX_SYMBOL_NAME_LEN;
+ break;
+ case SH_MAPPED_NAME_MAX_LENGTH:
+ // Use longer length than MAX_SHORTENED_IDENTIFIER_SIZE to
+ // handle array and struct dereferences.
+ *params = 1 + MAX_SYMBOL_NAME_LEN;
+ break;
+ default: UNREACHABLE();
+ }
+}
+
+//
+// Return any compiler log of messages for the application.
+//
+void ShGetInfoLog(const ShHandle handle, char* infoLog)
+{
+ if (!handle || !infoLog)
+ return;
+
+ TShHandleBase* base = static_cast<TShHandleBase*>(handle);
+ TCompiler* compiler = base->getAsCompiler();
+ if (!compiler) return;
+
+ TInfoSink& infoSink = compiler->getInfoSink();
+ strcpy(infoLog, infoSink.info.c_str());
+}
+
+//
+// Return any object code.
+//
+void ShGetObjectCode(const ShHandle handle, char* objCode)
+{
+ if (!handle || !objCode)
+ return;
+
+ TShHandleBase* base = static_cast<TShHandleBase*>(handle);
+ TCompiler* compiler = base->getAsCompiler();
+ if (!compiler) return;
+
+ TInfoSink& infoSink = compiler->getInfoSink();
+ strcpy(objCode, infoSink.obj.c_str());
+}
+
+void ShGetActiveAttrib(const ShHandle handle,
+ int index,
+ int* length,
+ int* size,
+ ShDataType* type,
+ char* name,
+ char* mappedName)
+{
+ getVariableInfo(SH_ACTIVE_ATTRIBUTES,
+ handle, index, length, size, type, name, mappedName);
+}
+
+void ShGetActiveUniform(const ShHandle handle,
+ int index,
+ int* length,
+ int* size,
+ ShDataType* type,
+ char* name,
+ char* mappedName)
+{
+ getVariableInfo(SH_ACTIVE_UNIFORMS,
+ handle, index, length, size, type, name, mappedName);
+}