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(GLenum format, GLint clientVersion); 46 GLenum GetSizedInternalFormat(GLenum internalFormat, GLenum type); 47 GLenum ValidateCompressedFormat(GLenum format, GLint clientVersion, bool expectCompressedFormats); 48 GLenum ValidateSubImageParams(bool compressed, GLsizei width, GLsizei height, GLint xoffset, GLint yoffset, GLenum target, GLint level, GLenum sizedInternalFormat, Texture *texture); 49 GLenum ValidateSubImageParams(bool compressed, GLsizei width, GLsizei height, GLsizei depth, GLint xoffset, GLint yoffset, GLint zoffset, GLenum target, GLint level, GLenum sizedInternalFormat, Texture *texture); 50 bool IsValidReadPixelsFormatType(const Framebuffer *framebuffer, GLenum format, GLenum type, GLint clientVersion); 51 bool IsDepthTexture(GLenum format); 52 bool IsStencilTexture(GLenum format); 53 bool IsCubemapTextureTarget(GLenum target); 54 int CubeFaceIndex(GLenum cubeTarget); 55 bool IsTextureTarget(GLenum target); 56 bool ValidateTextureFormatType(GLenum format, GLenum type, GLint internalformat, GLint clientVersion); 57 58 bool IsColorRenderable(GLenum internalformat, GLint clientVersion, bool isTexture); 59 bool IsDepthRenderable(GLenum internalformat, GLint clientVersion); 60 bool IsStencilRenderable(GLenum internalformat, GLint clientVersion); 61 62 // Parse the base uniform name and array index. Returns the base name of the uniform. outSubscript is 63 // set to GL_INVALID_INDEX if the provided name is not an array or the array index is invalid. 64 std::string ParseUniformName(const std::string &name, unsigned int *outSubscript); 65 } 66 67 namespace es2sw 68 { 69 sw::DepthCompareMode ConvertDepthComparison(GLenum comparison); 70 sw::StencilCompareMode ConvertStencilComparison(GLenum comparison); 71 sw::Color<float> ConvertColor(es2::Color color); 72 sw::BlendFactor ConvertBlendFunc(GLenum blend); 73 sw::BlendOperation ConvertBlendOp(GLenum blendOp); 74 sw::LogicalOperation ConvertLogicalOperation(GLenum logicalOperation); 75 sw::StencilOperation ConvertStencilOp(GLenum stencilOp); 76 sw::AddressingMode ConvertTextureWrap(GLenum wrap); 77 sw::SwizzleType ConvertSwizzleType(GLenum swizzleType); 78 sw::CullMode ConvertCullMode(GLenum cullFace, GLenum frontFace); 79 unsigned int ConvertColorMask(bool red, bool green, bool blue, bool alpha); 80 sw::MipmapType ConvertMipMapFilter(GLenum minFilter); 81 sw::FilterType ConvertTextureFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy); 82 bool ConvertPrimitiveType(GLenum primitiveType, GLsizei elementCount, GLenum elementType, sw::DrawType &swPrimitiveType, int &primitiveCount, int &verticesPerPrimitive); 83 sw::Format ConvertRenderbufferFormat(GLenum format); 84 } 85 86 namespace sw2es 87 { 88 GLuint GetAlphaSize(sw::Format colorFormat); 89 GLuint GetRedSize(sw::Format colorFormat); 90 GLuint GetGreenSize(sw::Format colorFormat); 91 GLuint GetBlueSize(sw::Format colorFormat); 92 GLuint GetDepthSize(sw::Format depthFormat); 93 GLuint GetStencilSize(sw::Format stencilFormat); 94 GLenum GetComponentType(sw::Format format, GLenum attachment); 95 96 GLenum ConvertBackBufferFormat(sw::Format format); 97 GLenum ConvertDepthStencilFormat(sw::Format format); 98 } 99 100 #endif // LIBGLESV2_UTILITIES_H 101
