1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // utilities.h: Conversion functions and other utility routines. 16 17 #ifndef LIBGLESV2_UTILITIES_H 18 #define LIBGLESV2_UTILITIES_H 19 20 #include "Device.hpp" 21 #include "common/Image.hpp" 22 #include "Texture.h" 23 24 #include <GLES2/gl2.h> 25 #include <GLES2/gl2ext.h> 26 27 #include <string> 28 29 namespace es2 30 { 31 struct Color; 32 class Framebuffer; 33 34 unsigned int UniformComponentCount(GLenum type); 35 GLenum UniformComponentType(GLenum type); 36 size_t UniformTypeSize(GLenum type); 37 bool IsSamplerUniform(GLenum type); 38 int VariableRowCount(GLenum type); 39 int VariableColumnCount(GLenum type); 40 int VariableRegisterCount(GLenum type); 41 int VariableRegisterSize(GLenum type); 42 43 int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize); 44 45 bool IsCompressed(GLint intenalformat, GLint clientVersion); 46 bool IsSizedInternalFormat(GLint internalformat); // Not compressed. 47 GLenum ValidateSubImageParams(bool compressed, bool copy, GLenum target, GLint level, GLint xoffset, GLint yoffset, 48 GLsizei width, GLsizei height, GLenum format, GLenum type, Texture *texture, GLint clientVersion); 49 GLenum ValidateSubImageParams(bool compressed, bool copy, GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, 50 GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, Texture *texture, GLint clientVersion); 51 bool ValidateCopyFormats(GLenum textureFormat, GLenum colorbufferFormat); 52 bool IsValidReadPixelsFormatType(const Framebuffer *framebuffer, GLenum format, GLenum type, GLint clientVersion); 53 bool IsDepthTexture(GLenum format); 54 bool IsStencilTexture(GLenum format); 55 bool IsCubemapTextureTarget(GLenum target); 56 int CubeFaceIndex(GLenum cubeTarget); 57 bool IsTextureTarget(GLenum target); 58 GLenum ValidateTextureFormatType(GLenum format, GLenum type, GLint internalformat, GLenum target, GLint clientVersion); 59 size_t GetTypeSize(GLenum type); 60 61 bool IsColorRenderable(GLint internalformat, GLint clientVersion); 62 bool IsDepthRenderable(GLint internalformat, GLint clientVersion); 63 bool IsStencilRenderable(GLint internalformat, GLint clientVersion); 64 bool IsMipmappable(GLint internalformat, GLint clientVersion); 65 66 GLuint GetAlphaSize(GLint internalformat); 67 GLuint GetRedSize(GLint internalformat); 68 GLuint GetGreenSize(GLint internalformat); 69 GLuint GetBlueSize(GLint internalformat); 70 GLuint GetDepthSize(GLint internalformat); 71 GLuint GetStencilSize(GLint internalformat); 72 73 GLenum GetColorComponentType(GLint internalformat); 74 GLenum GetComponentType(GLint internalformat, GLenum attachment); 75 bool IsNormalizedInteger(GLint internalformat); 76 bool IsNonNormalizedInteger(GLint internalformat); 77 bool IsFloatFormat(GLint internalformat); 78 bool IsSignedNonNormalizedInteger(GLint internalformat); 79 bool IsUnsignedNonNormalizedInteger(GLint internalformat); 80 GLenum GetColorEncoding(GLint internalformat); 81 82 // Parse the base uniform name and array index. Returns the base name of the uniform. outSubscript is 83 // set to GL_INVALID_INDEX if the provided name is not an array or the array index is invalid. 84 std::string ParseUniformName(const std::string &name, unsigned int *outSubscript); 85 } 86 87 namespace es2sw 88 { 89 sw::DepthCompareMode ConvertDepthComparison(GLenum comparison); 90 sw::StencilCompareMode ConvertStencilComparison(GLenum comparison); 91 sw::Color<float> ConvertColor(es2::Color color); 92 sw::BlendFactor ConvertBlendFunc(GLenum blend); 93 sw::BlendOperation ConvertBlendOp(GLenum blendOp); 94 sw::LogicalOperation ConvertLogicalOperation(GLenum logicalOperation); 95 sw::StencilOperation ConvertStencilOp(GLenum stencilOp); 96 sw::AddressingMode ConvertTextureWrap(GLenum wrap); 97 sw::CompareFunc ConvertCompareFunc(GLenum compareFunc, GLenum compareMode); 98 sw::SwizzleType ConvertSwizzleType(GLenum swizzleType); 99 sw::CullMode ConvertCullMode(GLenum cullFace, GLenum frontFace); 100 unsigned int ConvertColorMask(bool red, bool green, bool blue, bool alpha); 101 sw::MipmapType ConvertMipMapFilter(GLenum minFilter); 102 sw::FilterType ConvertTextureFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy); 103 bool ConvertPrimitiveType(GLenum primitiveType, GLsizei elementCount, GLenum elementType, sw::DrawType &swPrimitiveType, int &primitiveCount, int &verticesPerPrimitive); 104 } 105 106 namespace sw2es 107 { 108 GLenum ConvertBackBufferFormat(sw::Format format); 109 GLenum ConvertDepthStencilFormat(sw::Format format); 110 } 111 112 #endif // LIBGLESV2_UTILITIES_H 113
