diff options
Diffstat (limited to 'Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h')
| -rw-r--r-- | Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h | 228 |
1 files changed, 178 insertions, 50 deletions
diff --git a/Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h b/Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h index e0a5cc8..d0664e4 100644 --- a/Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h +++ b/Source/ThirdParty/ANGLE/include/GLSLANG/ShaderLang.h @@ -14,6 +14,66 @@ #ifdef __cplusplus extern "C" { #endif + +// Version number for shader translation API. +// It is incremented everytime the API changes. +#define SH_VERSION 103 + +// +// The names of the following enums have been derived by replacing GL prefix +// with SH. For example, SH_INFO_LOG_LENGTH is equivalent to GL_INFO_LOG_LENGTH. +// The enum values are also equal to the values of their GL counterpart. This +// is done to make it easier for applications to use the shader library. +// +typedef enum { + SH_FRAGMENT_SHADER = 0x8B30, + SH_VERTEX_SHADER = 0x8B31 +} ShShaderType; + +typedef enum { + SH_GLES2_SPEC = 0x8B40, + SH_WEBGL_SPEC = 0x8B41 +} ShShaderSpec; + +typedef enum { + SH_NONE = 0, + SH_INT = 0x1404, + SH_FLOAT = 0x1406, + SH_FLOAT_VEC2 = 0x8B50, + SH_FLOAT_VEC3 = 0x8B51, + SH_FLOAT_VEC4 = 0x8B52, + SH_INT_VEC2 = 0x8B53, + SH_INT_VEC3 = 0x8B54, + SH_INT_VEC4 = 0x8B55, + SH_BOOL = 0x8B56, + SH_BOOL_VEC2 = 0x8B57, + SH_BOOL_VEC3 = 0x8B58, + SH_BOOL_VEC4 = 0x8B59, + SH_FLOAT_MAT2 = 0x8B5A, + SH_FLOAT_MAT3 = 0x8B5B, + SH_FLOAT_MAT4 = 0x8B5C, + SH_SAMPLER_2D = 0x8B5E, + SH_SAMPLER_CUBE = 0x8B60 +} ShDataType; + +typedef enum { + SH_INFO_LOG_LENGTH = 0x8B84, + SH_OBJECT_CODE_LENGTH = 0x8B88, // GL_SHADER_SOURCE_LENGTH + SH_ACTIVE_UNIFORMS = 0x8B86, + SH_ACTIVE_UNIFORM_MAX_LENGTH = 0x8B87, + SH_ACTIVE_ATTRIBUTES = 0x8B89, + SH_ACTIVE_ATTRIBUTE_MAX_LENGTH = 0x8B8A +} ShShaderInfo; + +// Compile options. +typedef enum { + SH_VALIDATE = 0, + SH_VALIDATE_LOOP_INDEXING = 0x0001, + SH_INTERMEDIATE_TREE = 0x0002, + SH_OBJECT_CODE = 0x0004, + SH_ATTRIBUTES_UNIFORMS = 0x0008 +} ShCompileOptions; + // // Driver must call this first, once, before doing any other // compiler operations. @@ -25,23 +85,6 @@ int ShInitialize(); // If the function succeeds, the return value is nonzero, else zero. // int ShFinalize(); -// -// Types of languages the compiler can consume. -// -typedef enum { - EShLangVertex, - EShLangFragment, - EShLangCount, -} EShLanguage; - -// -// The language specification compiler conforms to. -// It currently supports OpenGL ES and WebGL specifications. -// -typedef enum { - EShSpecGLES2, - EShSpecWebGL, -} EShSpec; // // Implementation dependent built-in resources (constants and extensions). @@ -62,27 +105,12 @@ typedef struct // Extensions. // Set to 1 to enable the extension, else 0. int OES_standard_derivatives; -} TBuiltInResource; +} ShBuiltInResources; // // Initialize built-in resources with minimum expected values. // -void ShInitBuiltInResource(TBuiltInResource* resources); - -// -// Optimization level for the compiler. -// -typedef enum { - EShOptNoGeneration, - EShOptNone, - EShOptSimple, // Optimizations that can be done quickly - EShOptFull, // Optimizations that will take more time -} EShOptimizationLevel; - -enum TDebugOptions { - EDebugOpNone = 0x000, - EDebugOpIntermediate = 0x001, // Writes intermediate tree into info-log. -}; +void ShInitBuiltInResources(ShBuiltInResources* resources); // // ShHandle held by but opaque to the driver. It is allocated, @@ -96,30 +124,130 @@ typedef void* ShHandle; // // Driver calls these to create and destroy compiler objects. // -ShHandle ShConstructCompiler(EShLanguage, EShSpec, const TBuiltInResource*); -void ShDestruct(ShHandle); +// Returns the handle of constructed compiler. +// Parameters: +// type: Specifies the type of shader - SH_FRAGMENT_SHADER or SH_VERTEX_SHADER. +// spec: Specifies the language spec the compiler must conform to - +// SH_GLES2_SPEC or SH_WEBGL_SPEC. +// resources: Specifies the built-in resources. +ShHandle ShConstructCompiler(ShShaderType type, ShShaderSpec spec, + const ShBuiltInResources* resources); +void ShDestruct(ShHandle handle); // -// The return value of ShCompile is boolean, indicating -// success or failure. -// -// The info-log should be written by ShCompile into -// ShHandle, so it can answer future queries. +// Compiles the given shader source. +// If the function succeeds, the return value is nonzero, else zero. +// Parameters: +// handle: Specifies the handle of compiler to be used. +// shaderStrings: Specifies an array of pointers to null-terminated strings +// containing the shader source code. +// numStrings: Specifies the number of elements in shaderStrings array. +// compileOptions: A mask containing the following parameters: +// SH_VALIDATE: Validates shader to ensure that it conforms to the spec +// specified during compiler construction. +// SH_VALIDATE_LOOP_INDEXING: Validates loop and indexing in the shader to +// ensure that they do not exceed the minimum +// functionality mandated in GLSL 1.0 spec, +// Appendix A, Section 4 and 5. +// There is no need to specify this parameter when +// compiling for WebGL - it is implied. +// SH_INTERMEDIATE_TREE: Writes intermediate tree to info log. +// Can be queried by calling ShGetInfoLog(). +// SH_OBJECT_CODE: Translates intermediate tree to glsl or hlsl shader. +// Can be queried by calling ShGetObjectCode(). +// SH_ATTRIBUTES_UNIFORMS: Extracts attributes and uniforms. +// Can be queried by calling ShGetActiveAttrib() and +// ShGetActiveUniform(). // int ShCompile( - const ShHandle, + const ShHandle handle, const char* const shaderStrings[], const int numStrings, - const EShOptimizationLevel, - int debugOptions + int compileOptions ); -// -// All the following return 0 if the information is not -// available in the object passed down, or the object is bad. -// -const char* ShGetInfoLog(const ShHandle); -const char* ShGetObjectCode(const ShHandle); +// Returns a parameter from a compiled shader. +// Parameters: +// handle: Specifies the compiler +// pname: Specifies the parameter to query. +// The following parameters are defined: +// SH_INFO_LOG_LENGTH: the number of characters in the information log +// including the null termination character. +// SH_OBJECT_CODE_LENGTH: the number of characters in the object code +// including the null termination character. +// SH_ACTIVE_ATTRIBUTES: the number of active attribute variables. +// SH_ACTIVE_ATTRIBUTE_MAX_LENGTH: the length of the longest active attribute +// variable name including the null +// termination character. +// SH_ACTIVE_UNIFORMS: the number of active uniform variables. +// SH_ACTIVE_UNIFORM_MAX_LENGTH: the length of the longest active uniform +// variable name including the null +// termination character. +// +// params: Requested parameter +void ShGetInfo(const ShHandle handle, ShShaderInfo pname, int* params); + +// Returns nul-terminated information log for a compiled shader. +// Parameters: +// handle: Specifies the compiler +// infoLog: Specifies an array of characters that is used to return +// the information log. It is assumed that infoLog has enough memory +// to accomodate the information log. The size of the buffer required +// to store the returned information log can be obtained by calling +// ShGetInfo with SH_INFO_LOG_LENGTH. +void ShGetInfoLog(const ShHandle handle, char* infoLog); + +// Returns null-terminated object code for a compiled shader. +// Parameters: +// handle: Specifies the compiler +// infoLog: Specifies an array of characters that is used to return +// the object code. It is assumed that infoLog has enough memory to +// accomodate the object code. The size of the buffer required to +// store the returned object code can be obtained by calling +// ShGetInfo with SH_OBJECT_CODE_LENGTH. +void ShGetObjectCode(const ShHandle handle, char* objCode); + +// Returns information about an active attribute variable. +// Parameters: +// handle: Specifies the compiler +// index: Specifies the index of the attribute variable to be queried. +// length: Returns the number of characters actually written in the string +// indicated by name (excluding the null terminator) if a value other +// than NULL is passed. +// size: Returns the size of the attribute variable. +// type: Returns the data type of the attribute variable. +// name: Returns a null terminated string containing the name of the +// attribute variable. It is assumed that name has enough memory to +// accomodate the attribute variable name. The size of the buffer +// required to store the attribute variable name can be obtained by +// calling ShGetInfo with SH_ACTIVE_ATTRIBUTE_MAX_LENGTH. +void ShGetActiveAttrib(const ShHandle handle, + int index, + int* length, + int* size, + ShDataType* type, + char* name); + +// Returns information about an active uniform variable. +// Parameters: +// handle: Specifies the compiler +// index: Specifies the index of the uniform variable to be queried. +// length: Returns the number of characters actually written in the string +// indicated by name (excluding the null terminator) if a value +// other than NULL is passed. +// size: Returns the size of the uniform variable. +// type: Returns the data type of the uniform variable. +// name: Returns a null terminated string containing the name of the +// uniform variable. It is assumed that name has enough memory to +// accomodate the uniform variable name. The size of the buffer required +// to store the uniform variable name can be obtained by calling +// ShGetInfo with SH_ACTIVE_UNIFORMS_MAX_LENGTH. +void ShGetActiveUniform(const ShHandle handle, + int index, + int* length, + int* size, + ShDataType* type, + char* name); #ifdef __cplusplus } |