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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// utilities.h: Conversion functions and other utility routines.
#ifndef LIBGLES_CM_UTILITIES_H
#define LIBGLES_CM_UTILITIES_H
#include "Device.hpp"
#include "common/Image.hpp"
#include "Texture.h"
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <string>
namespace es1
{
struct Color;
bool IsCompressed(GLenum format);
GLenum ValidateSubImageParams(bool compressed, bool copy, GLenum target, GLint level, GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height, GLenum format, GLenum type, Texture *texture);
bool IsDepthTexture(GLenum format);
bool IsStencilTexture(GLenum format);
bool IsCubemapTextureTarget(GLenum target);
int CubeFaceIndex(GLenum cubeTarget);
bool IsTextureTarget(GLenum target);
GLenum ValidateTextureFormatType(GLenum format, GLenum type, GLint internalformat, GLenum target);
bool IsColorRenderable(GLint internalformat);
bool IsDepthRenderable(GLint internalformat);
bool IsStencilRenderable(GLint internalformat);
GLuint GetAlphaSize(GLint internalformat);
GLuint GetRedSize(GLint internalformat);
GLuint GetGreenSize(GLint internalformat);
GLuint GetBlueSize(GLint internalformat);
GLuint GetDepthSize(GLint internalformat);
GLuint GetStencilSize(GLint internalformat);
bool IsAlpha(GLint texFormat);
bool IsRGB(GLint texFormat);
bool IsRGBA(GLint texFormat);
}
namespace es2sw
{
sw::DepthCompareMode ConvertDepthComparison(GLenum comparison);
sw::StencilCompareMode ConvertStencilComparison(GLenum comparison);
sw::AlphaCompareMode ConvertAlphaComparison(GLenum comparison);
sw::Color<float> ConvertColor(es1::Color color);
sw::BlendFactor ConvertBlendFunc(GLenum blend);
sw::BlendOperation ConvertBlendOp(GLenum blendOp);
sw::LogicalOperation ConvertLogicalOperation(GLenum logicalOperation);
sw::StencilOperation ConvertStencilOp(GLenum stencilOp);
sw::AddressingMode ConvertTextureWrap(GLenum wrap);
sw::CullMode ConvertCullMode(GLenum cullFace, GLenum frontFace);
unsigned int ConvertColorMask(bool red, bool green, bool blue, bool alpha);
sw::MipmapType ConvertMipMapFilter(GLenum minFilter);
sw::FilterType ConvertTextureFilter(GLenum minFilter, GLenum magFilter, float maxAnisotropy);
bool ConvertPrimitiveType(GLenum primitiveType, GLsizei elementCount, GLenum elementType, sw::DrawType &swPrimitiveType, int &primitiveCount);
sw::TextureStage::StageOperation ConvertCombineOperation(GLenum operation);
sw::TextureStage::SourceArgument ConvertSourceArgument(GLenum argument);
sw::TextureStage::ArgumentModifier ConvertSourceOperand(GLenum operand);
}
namespace sw2es
{
GLenum ConvertBackBufferFormat(sw::Format format);
GLenum ConvertDepthStencilFormat(sw::Format format);
}
#endif // LIBGLES_CM_UTILITIES_H