1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved.
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
7 // http://www.apache.org/licenses/LICENSE-2.0
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.
15 // utilities.h: Conversion functions and other utility routines.
17 #ifndef LIBGLESV2_UTILITIES_H
18 #define LIBGLESV2_UTILITIES_H
21 #include "common/Image.hpp"
24 #include <GLES2/gl2.h>
25 #include <GLES2/gl2ext.h>
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);
43 int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize);
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 GLsizei GetTypeSize(GLenum type);
59 bool IsColorRenderable(GLenum internalformat, GLint clientVersion, bool isTexture);
60 bool IsDepthRenderable(GLenum internalformat, GLint clientVersion);
61 bool IsStencilRenderable(GLenum internalformat, GLint clientVersion);
63 // Parse the base uniform name and array index. Returns the base name of the uniform. outSubscript is
64 // set to GL_INVALID_INDEX if the provided name is not an array or the array index is invalid.
65 std::string ParseUniformName(const std::string &name, unsigned int *outSubscript);
70 sw::DepthCompareMode ConvertDepthComparison(GLenum comparison);
71 sw::StencilCompareMode ConvertStencilComparison(GLenum comparison);
72 sw::Color<float> ConvertColor(es2::Color color);
73 sw::BlendFactor ConvertBlendFunc(GLenum blend);
74 sw::BlendOperation ConvertBlendOp(GLenum blendOp);
75 sw::LogicalOperation ConvertLogicalOperation(GLenum logicalOperation);
76 sw::StencilOperation ConvertStencilOp(GLenum stencilOp);
77 sw::AddressingMode ConvertTextureWrap(GLenum wrap);
78 sw::CompareFunc ConvertCompareFunc(GLenum compareFunc, GLenum compareMode);
79 sw::SwizzleType ConvertSwizzleType(GLenum swizzleType);
80 sw::CullMode ConvertCullMode(GLenum cullFace, GLenum frontFace);
81 unsigned int ConvertColorMask(bool red, bool green, bool blue, bool alpha);
82 sw::MipmapType ConvertMipMapFilter(GLenum minFilter);
83 sw::FilterType ConvertTextureFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy);
84 bool ConvertPrimitiveType(GLenum primitiveType, GLsizei elementCount, GLenum elementType, sw::DrawType &swPrimitiveType, int &primitiveCount, int &verticesPerPrimitive);
85 sw::Format ConvertRenderbufferFormat(GLenum format);
90 GLuint GetAlphaSize(sw::Format colorFormat);
91 GLuint GetRedSize(sw::Format colorFormat);
92 GLuint GetGreenSize(sw::Format colorFormat);
93 GLuint GetBlueSize(sw::Format colorFormat);
94 GLuint GetDepthSize(sw::Format depthFormat);
95 GLuint GetStencilSize(sw::Format stencilFormat);
96 GLenum GetComponentType(sw::Format format, GLenum attachment);
98 GLenum ConvertBackBufferFormat(sw::Format format);
99 GLenum ConvertDepthStencilFormat(sw::Format format);
102 #endif // LIBGLESV2_UTILITIES_H