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android/platform/external/angle/78c669d2e6/./src/libGLESv2/Context.cpp
blob: 22666af302393c42f073daec62f0a5d438629e78 [file]
#include "precompiled.h"
//
// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Context.cpp: Implements the gl::Context class, managing all GL state and performing
// rendering operations. It is the GLES2 specific implementation of EGLContext.
#include "libGLESv2/Context.h"
#include "libGLESv2/main.h"
#include "libGLESv2/utilities.h"
#include "libGLESv2/Buffer.h"
#include "libGLESv2/Fence.h"
#include "libGLESv2/Framebuffer.h"
#include "libGLESv2/Renderbuffer.h"
#include "libGLESv2/Program.h"
#include "libGLESv2/ProgramBinary.h"
#include "libGLESv2/Query.h"
#include "libGLESv2/Texture.h"
#include "libGLESv2/ResourceManager.h"
#include "libGLESv2/renderer/IndexDataManager.h"
#include "libGLESv2/renderer/RenderTarget.h"
#include "libGLESv2/renderer/Renderer.h"
#include "libEGL/Surface.h"
#undef near
#undef far
namespace gl
{
static const char* makeStaticString(const std::string& str)
{
static std::set<std::string> strings;
std::set<std::string>::iterator it = strings.find(str);
if (it != strings.end())
return it->c_str();
return strings.insert(str).first->c_str();
}
Context::Context(const gl::Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess) : mRenderer(renderer)
{
ASSERT(robustAccess == false); // Unimplemented
mFenceHandleAllocator.setBaseHandle(0);
setClearColor(0.0f, 0.0f, 0.0f, 0.0f);
mState.depthClearValue = 1.0f;
mState.stencilClearValue = 0;
mState.rasterizer.cullFace = false;
mState.rasterizer.cullMode = GL_BACK;
mState.rasterizer.frontFace = GL_CCW;
mState.rasterizer.polygonOffsetFill = false;
mState.rasterizer.polygonOffsetFactor = 0.0f;
mState.rasterizer.polygonOffsetUnits = 0.0f;
mState.rasterizer.pointDrawMode = false;
mState.scissorTest = false;
mState.scissor.x = 0;
mState.scissor.y = 0;
mState.scissor.width = 0;
mState.scissor.height = 0;
mState.blend.blend = false;
mState.blend.sourceBlendRGB = GL_ONE;
mState.blend.sourceBlendAlpha = GL_ONE;
mState.blend.destBlendRGB = GL_ZERO;
mState.blend.destBlendAlpha = GL_ZERO;
mState.blend.blendEquationRGB = GL_FUNC_ADD;
mState.blend.blendEquationAlpha = GL_FUNC_ADD;
mState.blend.sampleAlphaToCoverage = false;
mState.blend.dither = true;
mState.blendColor.red = 0;
mState.blendColor.green = 0;
mState.blendColor.blue = 0;
mState.blendColor.alpha = 0;
mState.depthStencil.depthTest = false;
mState.depthStencil.depthFunc = GL_LESS;
mState.depthStencil.depthMask = true;
mState.depthStencil.stencilTest = false;
mState.depthStencil.stencilFunc = GL_ALWAYS;
mState.depthStencil.stencilMask = -1;
mState.depthStencil.stencilWritemask = -1;
mState.depthStencil.stencilBackFunc = GL_ALWAYS;
mState.depthStencil.stencilBackMask = - 1;
mState.depthStencil.stencilBackWritemask = -1;
mState.depthStencil.stencilFail = GL_KEEP;
mState.depthStencil.stencilPassDepthFail = GL_KEEP;
mState.depthStencil.stencilPassDepthPass = GL_KEEP;
mState.depthStencil.stencilBackFail = GL_KEEP;
mState.depthStencil.stencilBackPassDepthFail = GL_KEEP;
mState.depthStencil.stencilBackPassDepthPass = GL_KEEP;
mState.stencilRef = 0;
mState.stencilBackRef = 0;
mState.sampleCoverage = false;
mState.sampleCoverageValue = 1.0f;
mState.sampleCoverageInvert = false;
mState.generateMipmapHint = GL_DONT_CARE;
mState.fragmentShaderDerivativeHint = GL_DONT_CARE;
mState.lineWidth = 1.0f;
mState.viewport.x = 0;
mState.viewport.y = 0;
mState.viewport.width = 0;
mState.viewport.height = 0;
mState.zNear = 0.0f;
mState.zFar = 1.0f;
mState.blend.colorMaskRed = true;
mState.blend.colorMaskGreen = true;
mState.blend.colorMaskBlue = true;
mState.blend.colorMaskAlpha = true;
if (shareContext != NULL)
{
mResourceManager = shareContext->mResourceManager;
mResourceManager->addRef();
}
else
{
mResourceManager = new ResourceManager(mRenderer);
}
// [OpenGL ES 2.0.24] section 3.7 page 83:
// In the initial state, TEXTURE_2D and TEXTURE_CUBE_MAP have twodimensional
// and cube map texture state vectors respectively associated with them.
// In order that access to these initial textures not be lost, they are treated as texture
// objects all of whose names are 0.
mTexture2DZero.set(new Texture2D(mRenderer, 0));
mTextureCubeMapZero.set(new TextureCubeMap(mRenderer, 0));
mState.activeSampler = 0;
bindArrayBuffer(0);
bindElementArrayBuffer(0);
bindTextureCubeMap(0);
bindTexture2D(0);
bindReadFramebuffer(0);
bindDrawFramebuffer(0);
bindRenderbuffer(0);
mState.currentProgram = 0;
mCurrentProgramBinary.set(NULL);
mState.packAlignment = 4;
mState.unpackAlignment = 4;
mState.packReverseRowOrder = false;
mExtensionString = NULL;
mRendererString = NULL;
mInvalidEnum = false;
mInvalidValue = false;
mInvalidOperation = false;
mOutOfMemory = false;
mInvalidFramebufferOperation = false;
mHasBeenCurrent = false;
mContextLost = false;
mResetStatus = GL_NO_ERROR;
mResetStrategy = (notifyResets ? GL_LOSE_CONTEXT_ON_RESET_EXT : GL_NO_RESET_NOTIFICATION_EXT);
mRobustAccess = robustAccess;
mSupportsBGRATextures = false;
mSupportsDXT1Textures = false;
mSupportsDXT3Textures = false;
mSupportsDXT5Textures = false;
mSupportsEventQueries = false;
mSupportsOcclusionQueries = false;
mNumCompressedTextureFormats = 0;
}
Context::~Context()
{
if (mState.currentProgram != 0)
{
Program *programObject = mResourceManager->getProgram(mState.currentProgram);
if (programObject)
{
programObject->release();
}
mState.currentProgram = 0;
}
mCurrentProgramBinary.set(NULL);
while (!mFramebufferMap.empty())
{
deleteFramebuffer(mFramebufferMap.begin()->first);
}
while (!mFenceMap.empty())
{
deleteFence(mFenceMap.begin()->first);
}
while (!mQueryMap.empty())
{
deleteQuery(mQueryMap.begin()->first);
}
for (int type = 0; type < TEXTURE_TYPE_COUNT; type++)
{
for (int sampler = 0; sampler < IMPLEMENTATION_MAX_COMBINED_TEXTURE_IMAGE_UNITS; sampler++)
{
mState.samplerTexture[type][sampler].set(NULL);
}
}
for (int type = 0; type < TEXTURE_TYPE_COUNT; type++)
{
mIncompleteTextures[type].set(NULL);
}
for (int i = 0; i < MAX_VERTEX_ATTRIBS; i++)
{
mState.vertexAttribute[i].mBoundBuffer.set(NULL);
}
for (int i = 0; i < QUERY_TYPE_COUNT; i++)
{
mState.activeQuery[i].set(NULL);
}
mState.arrayBuffer.set(NULL);
mState.elementArrayBuffer.set(NULL);
mState.renderbuffer.set(NULL);
mTexture2DZero.set(NULL);
mTextureCubeMapZero.set(NULL);
mResourceManager->release();
}
void Context::makeCurrent(egl::Surface *surface)
{
if (!mHasBeenCurrent)
{
mMajorShaderModel = mRenderer->getMajorShaderModel();
mMaximumPointSize = mRenderer->getMaxPointSize();
mSupportsVertexTexture = mRenderer->getVertexTextureSupport();
mSupportsNonPower2Texture = mRenderer->getNonPower2TextureSupport();
mSupportsInstancing = mRenderer->getInstancingSupport();
mMaxViewportDimension = mRenderer->getMaxViewportDimension();
mMaxTextureDimension = std::min(std::min(mRenderer->getMaxTextureWidth(), mRenderer->getMaxTextureHeight()),
(int)gl::IMPLEMENTATION_MAX_TEXTURE_SIZE);
mMaxCubeTextureDimension = std::min(mMaxTextureDimension, (int)gl::IMPLEMENTATION_MAX_CUBE_MAP_TEXTURE_SIZE);
mMaxRenderbufferDimension = mMaxTextureDimension;
mMaxTextureLevel = log2(mMaxTextureDimension) + 1;
mMaxTextureAnisotropy = mRenderer->getTextureMaxAnisotropy();
TRACE("MaxTextureDimension=%d, MaxCubeTextureDimension=%d, MaxRenderbufferDimension=%d, MaxTextureLevel=%d, MaxTextureAnisotropy=%f",
mMaxTextureDimension, mMaxCubeTextureDimension, mMaxRenderbufferDimension, mMaxTextureLevel, mMaxTextureAnisotropy);
mSupportsEventQueries = mRenderer->getEventQuerySupport();
mSupportsOcclusionQueries = mRenderer->getOcclusionQuerySupport();
mSupportsBGRATextures = mRenderer->getBGRATextureSupport();
mSupportsDXT1Textures = mRenderer->getDXT1TextureSupport();
mSupportsDXT3Textures = mRenderer->getDXT3TextureSupport();
mSupportsDXT5Textures = mRenderer->getDXT5TextureSupport();
mSupportsFloat32Textures = mRenderer->getFloat32TextureSupport(&mSupportsFloat32LinearFilter, &mSupportsFloat32RenderableTextures);
mSupportsFloat16Textures = mRenderer->getFloat16TextureSupport(&mSupportsFloat16LinearFilter, &mSupportsFloat16RenderableTextures);
mSupportsLuminanceTextures = mRenderer->getLuminanceTextureSupport();
mSupportsLuminanceAlphaTextures = mRenderer->getLuminanceAlphaTextureSupport();
mSupportsDepthTextures = mRenderer->getDepthTextureSupport();
mSupportsTextureFilterAnisotropy = mRenderer->getTextureFilterAnisotropySupport();
mSupports32bitIndices = mRenderer->get32BitIndexSupport();
mNumCompressedTextureFormats = 0;
if (supportsDXT1Textures())
{
mNumCompressedTextureFormats += 2;
}
if (supportsDXT3Textures())
{
mNumCompressedTextureFormats += 1;
}
if (supportsDXT5Textures())
{
mNumCompressedTextureFormats += 1;
}
initExtensionString();
initRendererString();
mState.viewport.x = 0;
mState.viewport.y = 0;
mState.viewport.width = surface->getWidth();
mState.viewport.height = surface->getHeight();
mState.scissor.x = 0;
mState.scissor.y = 0;
mState.scissor.width = surface->getWidth();
mState.scissor.height = surface->getHeight();
mHasBeenCurrent = true;
}
// Wrap the existing swapchain resources into GL objects and assign them to the '0' names
rx::SwapChain *swapchain = surface->getSwapChain();
Colorbuffer *colorbufferZero = new Colorbuffer(mRenderer, swapchain);
DepthStencilbuffer *depthStencilbufferZero = new DepthStencilbuffer(mRenderer, swapchain);
Framebuffer *framebufferZero = new DefaultFramebuffer(mRenderer, colorbufferZero, depthStencilbufferZero);
setFramebufferZero(framebufferZero);
}
// NOTE: this function should not assume that this context is current!
void Context::markContextLost()
{
if (mResetStrategy == GL_LOSE_CONTEXT_ON_RESET_EXT)
mResetStatus = GL_UNKNOWN_CONTEXT_RESET_EXT;
mContextLost = true;
}
bool Context::isContextLost()
{
return mContextLost;
}
void Context::setClearColor(float red, float green, float blue, float alpha)
{
mState.colorClearValue.red = red;
mState.colorClearValue.green = green;
mState.colorClearValue.blue = blue;
mState.colorClearValue.alpha = alpha;
}
void Context::setClearDepth(float depth)
{
mState.depthClearValue = depth;
}
void Context::setClearStencil(int stencil)
{
mState.stencilClearValue = stencil;
}
void Context::setCullFace(bool enabled)
{
mState.rasterizer.cullFace = enabled;
}
bool Context::isCullFaceEnabled() const
{
return mState.rasterizer.cullFace;
}
void Context::setCullMode(GLenum mode)
{
mState.rasterizer.cullMode = mode;
}
void Context::setFrontFace(GLenum front)
{
mState.rasterizer.frontFace = front;
}
void Context::setDepthTest(bool enabled)
{
mState.depthStencil.depthTest = enabled;
}
bool Context::isDepthTestEnabled() const
{
return mState.depthStencil.depthTest;
}
void Context::setDepthFunc(GLenum depthFunc)
{
mState.depthStencil.depthFunc = depthFunc;
}
void Context::setDepthRange(float zNear, float zFar)
{
mState.zNear = zNear;
mState.zFar = zFar;
}
void Context::setBlend(bool enabled)
{
mState.blend.blend = enabled;
}
bool Context::isBlendEnabled() const
{
return mState.blend.blend;
}
void Context::setBlendFactors(GLenum sourceRGB, GLenum destRGB, GLenum sourceAlpha, GLenum destAlpha)
{
mState.blend.sourceBlendRGB = sourceRGB;
mState.blend.destBlendRGB = destRGB;
mState.blend.sourceBlendAlpha = sourceAlpha;
mState.blend.destBlendAlpha = destAlpha;
}
void Context::setBlendColor(float red, float green, float blue, float alpha)
{
mState.blendColor.red = red;
mState.blendColor.green = green;
mState.blendColor.blue = blue;
mState.blendColor.alpha = alpha;
}
void Context::setBlendEquation(GLenum rgbEquation, GLenum alphaEquation)
{
mState.blend.blendEquationRGB = rgbEquation;
mState.blend.blendEquationAlpha = alphaEquation;
}
void Context::setStencilTest(bool enabled)
{
mState.depthStencil.stencilTest = enabled;
}
bool Context::isStencilTestEnabled() const
{
return mState.depthStencil.stencilTest;
}
void Context::setStencilParams(GLenum stencilFunc, GLint stencilRef, GLuint stencilMask)
{
mState.depthStencil.stencilFunc = stencilFunc;
mState.stencilRef = (stencilRef > 0) ? stencilRef : 0;
mState.depthStencil.stencilMask = stencilMask;
}
void Context::setStencilBackParams(GLenum stencilBackFunc, GLint stencilBackRef, GLuint stencilBackMask)
{
mState.depthStencil.stencilBackFunc = stencilBackFunc;
mState.stencilBackRef = (stencilBackRef > 0) ? stencilBackRef : 0;
mState.depthStencil.stencilBackMask = stencilBackMask;
}
void Context::setStencilWritemask(GLuint stencilWritemask)
{
mState.depthStencil.stencilWritemask = stencilWritemask;
}
void Context::setStencilBackWritemask(GLuint stencilBackWritemask)
{
mState.depthStencil.stencilBackWritemask = stencilBackWritemask;
}
void Context::setStencilOperations(GLenum stencilFail, GLenum stencilPassDepthFail, GLenum stencilPassDepthPass)
{
mState.depthStencil.stencilFail = stencilFail;
mState.depthStencil.stencilPassDepthFail = stencilPassDepthFail;
mState.depthStencil.stencilPassDepthPass = stencilPassDepthPass;
}
void Context::setStencilBackOperations(GLenum stencilBackFail, GLenum stencilBackPassDepthFail, GLenum stencilBackPassDepthPass)
{
mState.depthStencil.stencilBackFail = stencilBackFail;
mState.depthStencil.stencilBackPassDepthFail = stencilBackPassDepthFail;
mState.depthStencil.stencilBackPassDepthPass = stencilBackPassDepthPass;
}
void Context::setPolygonOffsetFill(bool enabled)
{
mState.rasterizer.polygonOffsetFill = enabled;
}
bool Context::isPolygonOffsetFillEnabled() const
{
return mState.rasterizer.polygonOffsetFill;
}
void Context::setPolygonOffsetParams(GLfloat factor, GLfloat units)
{
// An application can pass NaN values here, so handle this gracefully
mState.rasterizer.polygonOffsetFactor = factor != factor ? 0.0f : factor;
mState.rasterizer.polygonOffsetUnits = units != units ? 0.0f : units;
}
void Context::setSampleAlphaToCoverage(bool enabled)
{
mState.blend.sampleAlphaToCoverage = enabled;
}
bool Context::isSampleAlphaToCoverageEnabled() const
{
return mState.blend.sampleAlphaToCoverage;
}
void Context::setSampleCoverage(bool enabled)
{
mState.sampleCoverage = enabled;
}
bool Context::isSampleCoverageEnabled() const
{
return mState.sampleCoverage;
}
void Context::setSampleCoverageParams(GLclampf value, bool invert)
{
mState.sampleCoverageValue = value;
mState.sampleCoverageInvert = invert;
}
void Context::setScissorTest(bool enabled)
{
mState.scissorTest = enabled;
}
bool Context::isScissorTestEnabled() const
{
return mState.scissorTest;
}
void Context::setDither(bool enabled)
{
mState.blend.dither = enabled;
}
bool Context::isDitherEnabled() const
{
return mState.blend.dither;
}
void Context::setLineWidth(GLfloat width)
{
mState.lineWidth = width;
}
void Context::setGenerateMipmapHint(GLenum hint)
{
mState.generateMipmapHint = hint;
}
void Context::setFragmentShaderDerivativeHint(GLenum hint)
{
mState.fragmentShaderDerivativeHint = hint;
// TODO: Propagate the hint to shader translator so we can write
// ddx, ddx_coarse, or ddx_fine depending on the hint.
// Ignore for now. It is valid for implementations to ignore hint.
}
void Context::setViewportParams(GLint x, GLint y, GLsizei width, GLsizei height)
{
mState.viewport.x = x;
mState.viewport.y = y;
mState.viewport.width = width;
mState.viewport.height = height;
}
void Context::setScissorParams(GLint x, GLint y, GLsizei width, GLsizei height)
{
mState.scissor.x = x;
mState.scissor.y = y;
mState.scissor.width = width;
mState.scissor.height = height;
}
void Context::setColorMask(bool red, bool green, bool blue, bool alpha)
{
mState.blend.colorMaskRed = red;
mState.blend.colorMaskGreen = green;
mState.blend.colorMaskBlue = blue;
mState.blend.colorMaskAlpha = alpha;
}
void Context::setDepthMask(bool mask)
{
mState.depthStencil.depthMask = mask;
}
void Context::setActiveSampler(unsigned int active)
{
mState.activeSampler = active;
}
GLuint Context::getReadFramebufferHandle() const
{
return mState.readFramebuffer;
}
GLuint Context::getDrawFramebufferHandle() const
{
return mState.drawFramebuffer;
}
GLuint Context::getRenderbufferHandle() const
{
return mState.renderbuffer.id();
}
GLuint Context::getArrayBufferHandle() const
{
return mState.arrayBuffer.id();
}
GLuint Context::getActiveQuery(GLenum target) const
{
Query *queryObject = NULL;
switch (target)
{
case GL_ANY_SAMPLES_PASSED_EXT:
queryObject = mState.activeQuery[QUERY_ANY_SAMPLES_PASSED].get();
break;
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
queryObject = mState.activeQuery[QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE].get();
break;
default:
ASSERT(false);
}
if (queryObject)
{
return queryObject->id();
}
else
{
return 0;
}
}
void Context::setEnableVertexAttribArray(unsigned int attribNum, bool enabled)
{
mState.vertexAttribute[attribNum].mArrayEnabled = enabled;
}
const VertexAttribute &Context::getVertexAttribState(unsigned int attribNum)
{
return mState.vertexAttribute[attribNum];
}
void Context::setVertexAttribState(unsigned int attribNum, Buffer *boundBuffer, GLint size, GLenum type, bool normalized,
GLsizei stride, const void *pointer)
{
mState.vertexAttribute[attribNum].mBoundBuffer.set(boundBuffer);
mState.vertexAttribute[attribNum].mSize = size;
mState.vertexAttribute[attribNum].mType = type;
mState.vertexAttribute[attribNum].mNormalized = normalized;
mState.vertexAttribute[attribNum].mStride = stride;
mState.vertexAttribute[attribNum].mPointer = pointer;
}
const void *Context::getVertexAttribPointer(unsigned int attribNum) const
{
return mState.vertexAttribute[attribNum].mPointer;
}
void Context::setPackAlignment(GLint alignment)
{
mState.packAlignment = alignment;
}
GLint Context::getPackAlignment() const
{
return mState.packAlignment;
}
void Context::setUnpackAlignment(GLint alignment)
{
mState.unpackAlignment = alignment;
}
GLint Context::getUnpackAlignment() const
{
return mState.unpackAlignment;
}
void Context::setPackReverseRowOrder(bool reverseRowOrder)
{
mState.packReverseRowOrder = reverseRowOrder;
}
bool Context::getPackReverseRowOrder() const
{
return mState.packReverseRowOrder;
}
GLuint Context::createBuffer()
{
return mResourceManager->createBuffer();
}
GLuint Context::createProgram()
{
return mResourceManager->createProgram();
}
GLuint Context::createShader(GLenum type)
{
return mResourceManager->createShader(type);
}
GLuint Context::createTexture()
{
return mResourceManager->createTexture();
}
GLuint Context::createRenderbuffer()
{
return mResourceManager->createRenderbuffer();
}
// Returns an unused framebuffer name
GLuint Context::createFramebuffer()
{
GLuint handle = mFramebufferHandleAllocator.allocate();
mFramebufferMap[handle] = NULL;
return handle;
}
GLuint Context::createFence()
{
GLuint handle = mFenceHandleAllocator.allocate();
mFenceMap[handle] = new Fence(mRenderer);
return handle;
}
// Returns an unused query name
GLuint Context::createQuery()
{
GLuint handle = mQueryHandleAllocator.allocate();
mQueryMap[handle] = NULL;
return handle;
}
void Context::deleteBuffer(GLuint buffer)
{
if (mResourceManager->getBuffer(buffer))
{
detachBuffer(buffer);
}
mResourceManager->deleteBuffer(buffer);
}
void Context::deleteShader(GLuint shader)
{
mResourceManager->deleteShader(shader);
}
void Context::deleteProgram(GLuint program)
{
mResourceManager->deleteProgram(program);
}
void Context::deleteTexture(GLuint texture)
{
if (mResourceManager->getTexture(texture))
{
detachTexture(texture);
}
mResourceManager->deleteTexture(texture);
}
void Context::deleteRenderbuffer(GLuint renderbuffer)
{
if (mResourceManager->getRenderbuffer(renderbuffer))
{
detachRenderbuffer(renderbuffer);
}
mResourceManager->deleteRenderbuffer(renderbuffer);
}
void Context::deleteFramebuffer(GLuint framebuffer)
{
FramebufferMap::iterator framebufferObject = mFramebufferMap.find(framebuffer);
if (framebufferObject != mFramebufferMap.end())
{
detachFramebuffer(framebuffer);
mFramebufferHandleAllocator.release(framebufferObject->first);
delete framebufferObject->second;
mFramebufferMap.erase(framebufferObject);
}
}
void Context::deleteFence(GLuint fence)
{
FenceMap::iterator fenceObject = mFenceMap.find(fence);
if (fenceObject != mFenceMap.end())
{
mFenceHandleAllocator.release(fenceObject->first);
delete fenceObject->second;
mFenceMap.erase(fenceObject);
}
}
void Context::deleteQuery(GLuint query)
{
QueryMap::iterator queryObject = mQueryMap.find(query);
if (queryObject != mQueryMap.end())
{
mQueryHandleAllocator.release(queryObject->first);
if (queryObject->second)
{
queryObject->second->release();
}
mQueryMap.erase(queryObject);
}
}
Buffer *Context::getBuffer(GLuint handle)
{
return mResourceManager->getBuffer(handle);
}
Shader *Context::getShader(GLuint handle)
{
return mResourceManager->getShader(handle);
}
Program *Context::getProgram(GLuint handle)
{
return mResourceManager->getProgram(handle);
}
Texture *Context::getTexture(GLuint handle)
{
return mResourceManager->getTexture(handle);
}
Renderbuffer *Context::getRenderbuffer(GLuint handle)
{
return mResourceManager->getRenderbuffer(handle);
}
Framebuffer *Context::getReadFramebuffer()
{
return getFramebuffer(mState.readFramebuffer);
}
Framebuffer *Context::getDrawFramebuffer()
{
return mBoundDrawFramebuffer;
}
void Context::bindArrayBuffer(unsigned int buffer)
{
mResourceManager->checkBufferAllocation(buffer);
mState.arrayBuffer.set(getBuffer(buffer));
}
void Context::bindElementArrayBuffer(unsigned int buffer)
{
mResourceManager->checkBufferAllocation(buffer);
mState.elementArrayBuffer.set(getBuffer(buffer));
}
void Context::bindTexture2D(GLuint texture)
{
mResourceManager->checkTextureAllocation(texture, TEXTURE_2D);
mState.samplerTexture[TEXTURE_2D][mState.activeSampler].set(getTexture(texture));
}
void Context::bindTextureCubeMap(GLuint texture)
{
mResourceManager->checkTextureAllocation(texture, TEXTURE_CUBE);
mState.samplerTexture[TEXTURE_CUBE][mState.activeSampler].set(getTexture(texture));
}
void Context::bindReadFramebuffer(GLuint framebuffer)
{
if (!getFramebuffer(framebuffer))
{
mFramebufferMap[framebuffer] = new Framebuffer(mRenderer);
}
mState.readFramebuffer = framebuffer;
}
void Context::bindDrawFramebuffer(GLuint framebuffer)
{
if (!getFramebuffer(framebuffer))
{
mFramebufferMap[framebuffer] = new Framebuffer(mRenderer);
}
mState.drawFramebuffer = framebuffer;
mBoundDrawFramebuffer = getFramebuffer(framebuffer);
}
void Context::bindRenderbuffer(GLuint renderbuffer)
{
mResourceManager->checkRenderbufferAllocation(renderbuffer);
mState.renderbuffer.set(getRenderbuffer(renderbuffer));
}
void Context::useProgram(GLuint program)
{
GLuint priorProgram = mState.currentProgram;
mState.currentProgram = program; // Must switch before trying to delete, otherwise it only gets flagged.
if (priorProgram != program)
{
Program *newProgram = mResourceManager->getProgram(program);
Program *oldProgram = mResourceManager->getProgram(priorProgram);
mCurrentProgramBinary.set(NULL);
if (newProgram)
{
newProgram->addRef();
mCurrentProgramBinary.set(newProgram->getProgramBinary());
}
if (oldProgram)
{
oldProgram->release();
}
}
}
void Context::linkProgram(GLuint program)
{
Program *programObject = mResourceManager->getProgram(program);
bool linked = programObject->link();
// if the current program was relinked successfully we
// need to install the new executables
if (linked && program == mState.currentProgram)
{
mCurrentProgramBinary.set(programObject->getProgramBinary());
}
}
void Context::setProgramBinary(GLuint program, const void *binary, GLint length)
{
Program *programObject = mResourceManager->getProgram(program);
bool loaded = programObject->setProgramBinary(binary, length);
// if the current program was reloaded successfully we
// need to install the new executables
if (loaded && program == mState.currentProgram)
{
mCurrentProgramBinary.set(programObject->getProgramBinary());
}
}
void Context::beginQuery(GLenum target, GLuint query)
{
// From EXT_occlusion_query_boolean: If BeginQueryEXT is called with an <id>
// of zero, if the active query object name for <target> is non-zero (for the
// targets ANY_SAMPLES_PASSED_EXT and ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, if
// the active query for either target is non-zero), if <id> is the name of an
// existing query object whose type does not match <target>, or if <id> is the
// active query object name for any query type, the error INVALID_OPERATION is
// generated.
// Ensure no other queries are active
// NOTE: If other queries than occlusion are supported, we will need to check
// separately that:
// a) The query ID passed is not the current active query for any target/type
// b) There are no active queries for the requested target (and in the case
// of GL_ANY_SAMPLES_PASSED_EXT and GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
// no query may be active for either if glBeginQuery targets either.
for (int i = 0; i < QUERY_TYPE_COUNT; i++)
{
if (mState.activeQuery[i].get() != NULL)
{
return gl::error(GL_INVALID_OPERATION);
}
}
QueryType qType;
switch (target)
{
case GL_ANY_SAMPLES_PASSED_EXT:
qType = QUERY_ANY_SAMPLES_PASSED;
break;
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
qType = QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE;
break;
default:
ASSERT(false);
return;
}
Query *queryObject = getQuery(query, true, target);
// check that name was obtained with glGenQueries
if (!queryObject)
{
return gl::error(GL_INVALID_OPERATION);
}
// check for type mismatch
if (queryObject->getType() != target)
{
return gl::error(GL_INVALID_OPERATION);
}
// set query as active for specified target
mState.activeQuery[qType].set(queryObject);
// begin query
queryObject->begin();
}
void Context::endQuery(GLenum target)
{
QueryType qType;
switch (target)
{
case GL_ANY_SAMPLES_PASSED_EXT:
qType = QUERY_ANY_SAMPLES_PASSED;
break;
case GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT:
qType = QUERY_ANY_SAMPLES_PASSED_CONSERVATIVE;
break;
default:
ASSERT(false);
return;
}
Query *queryObject = mState.activeQuery[qType].get();
if (queryObject == NULL)
{
return gl::error(GL_INVALID_OPERATION);
}
queryObject->end();
mState.activeQuery[qType].set(NULL);
}
void Context::setFramebufferZero(Framebuffer *buffer)
{
delete mFramebufferMap[0];
mFramebufferMap[0] = buffer;
if (mState.drawFramebuffer == 0)
{
mBoundDrawFramebuffer = buffer;
}
}
void Context::setRenderbufferStorage(GLsizei width, GLsizei height, GLenum internalformat, GLsizei samples)
{
RenderbufferStorage *renderbuffer = NULL;
switch (internalformat)
{
case GL_DEPTH_COMPONENT16:
renderbuffer = new gl::Depthbuffer(mRenderer, width, height, samples);
break;
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGB565:
case GL_RGB8_OES:
case GL_RGBA8_OES:
renderbuffer = new gl::Colorbuffer(mRenderer,width, height, internalformat, samples);
break;
case GL_STENCIL_INDEX8:
renderbuffer = new gl::Stencilbuffer(mRenderer, width, height, samples);
break;
case GL_DEPTH24_STENCIL8_OES:
renderbuffer = new gl::DepthStencilbuffer(mRenderer, width, height, samples);
break;
default:
UNREACHABLE(); return;
}
Renderbuffer *renderbufferObject = mState.renderbuffer.get();
renderbufferObject->setStorage(renderbuffer);
}
Framebuffer *Context::getFramebuffer(unsigned int handle)
{
FramebufferMap::iterator framebuffer = mFramebufferMap.find(handle);
if (framebuffer == mFramebufferMap.end())
{
return NULL;
}
else
{
return framebuffer->second;
}
}
Fence *Context::getFence(unsigned int handle)
{
FenceMap::iterator fence = mFenceMap.find(handle);
if (fence == mFenceMap.end())
{
return NULL;
}
else
{
return fence->second;
}
}
Query *Context::getQuery(unsigned int handle, bool create, GLenum type)
{
QueryMap::iterator query = mQueryMap.find(handle);
if (query == mQueryMap.end())
{
return NULL;
}
else
{
if (!query->second && create)
{
query->second = new Query(mRenderer, type, handle);
query->second->addRef();
}
return query->second;
}
}
Buffer *Context::getArrayBuffer()
{
return mState.arrayBuffer.get();
}
Buffer *Context::getElementArrayBuffer()
{
return mState.elementArrayBuffer.get();
}
ProgramBinary *Context::getCurrentProgramBinary()
{
return mCurrentProgramBinary.get();
}
Texture2D *Context::getTexture2D()
{
return static_cast<Texture2D*>(getSamplerTexture(mState.activeSampler, TEXTURE_2D));
}
TextureCubeMap *Context::getTextureCubeMap()
{
return static_cast<TextureCubeMap*>(getSamplerTexture(mState.activeSampler, TEXTURE_CUBE));
}
Texture *Context::getSamplerTexture(unsigned int sampler, TextureType type)
{
GLuint texid = mState.samplerTexture[type][sampler].id();
if (texid == 0) // Special case: 0 refers to different initial textures based on the target
{
switch (type)
{
default: UNREACHABLE();
case TEXTURE_2D: return mTexture2DZero.get();
case TEXTURE_CUBE: return mTextureCubeMapZero.get();
}
}
return mState.samplerTexture[type][sampler].get();
}
bool Context::getBooleanv(GLenum pname, GLboolean *params)
{
switch (pname)
{
case GL_SHADER_COMPILER: *params = GL_TRUE; break;
case GL_SAMPLE_COVERAGE_INVERT: *params = mState.sampleCoverageInvert; break;
case GL_DEPTH_WRITEMASK: *params = mState.depthStencil.depthMask; break;
case GL_COLOR_WRITEMASK:
params[0] = mState.blend.colorMaskRed;
params[1] = mState.blend.colorMaskGreen;
params[2] = mState.blend.colorMaskBlue;
params[3] = mState.blend.colorMaskAlpha;
break;
case GL_CULL_FACE: *params = mState.rasterizer.cullFace; break;
case GL_POLYGON_OFFSET_FILL: *params = mState.rasterizer.polygonOffsetFill; break;
case GL_SAMPLE_ALPHA_TO_COVERAGE: *params = mState.blend.sampleAlphaToCoverage; break;
case GL_SAMPLE_COVERAGE: *params = mState.sampleCoverage; break;
case GL_SCISSOR_TEST: *params = mState.scissorTest; break;
case GL_STENCIL_TEST: *params = mState.depthStencil.stencilTest; break;
case GL_DEPTH_TEST: *params = mState.depthStencil.depthTest; break;
case GL_BLEND: *params = mState.blend.blend; break;
case GL_DITHER: *params = mState.blend.dither; break;
case GL_CONTEXT_ROBUST_ACCESS_EXT: *params = mRobustAccess ? GL_TRUE : GL_FALSE; break;
default:
return false;
}
return true;
}
bool Context::getFloatv(GLenum pname, GLfloat *params)
{
// Please note: DEPTH_CLEAR_VALUE is included in our internal getFloatv implementation
// because it is stored as a float, despite the fact that the GL ES 2.0 spec names
// GetIntegerv as its native query function. As it would require conversion in any
// case, this should make no difference to the calling application.
switch (pname)
{
case GL_LINE_WIDTH: *params = mState.lineWidth; break;
case GL_SAMPLE_COVERAGE_VALUE: *params = mState.sampleCoverageValue; break;
case GL_DEPTH_CLEAR_VALUE: *params = mState.depthClearValue; break;
case GL_POLYGON_OFFSET_FACTOR: *params = mState.rasterizer.polygonOffsetFactor; break;
case GL_POLYGON_OFFSET_UNITS: *params = mState.rasterizer.polygonOffsetUnits; break;
case GL_ALIASED_LINE_WIDTH_RANGE:
params[0] = gl::ALIASED_LINE_WIDTH_RANGE_MIN;
params[1] = gl::ALIASED_LINE_WIDTH_RANGE_MAX;
break;
case GL_ALIASED_POINT_SIZE_RANGE:
params[0] = gl::ALIASED_POINT_SIZE_RANGE_MIN;
params[1] = getMaximumPointSize();
break;
case GL_DEPTH_RANGE:
params[0] = mState.zNear;
params[1] = mState.zFar;
break;
case GL_COLOR_CLEAR_VALUE:
params[0] = mState.colorClearValue.red;
params[1] = mState.colorClearValue.green;
params[2] = mState.colorClearValue.blue;
params[3] = mState.colorClearValue.alpha;
break;
case GL_BLEND_COLOR:
params[0] = mState.blendColor.red;
params[1] = mState.blendColor.green;
params[2] = mState.blendColor.blue;
params[3] = mState.blendColor.alpha;
break;
case GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT:
if (!supportsTextureFilterAnisotropy())
{
return false;
}
*params = mMaxTextureAnisotropy;
break;
default:
return false;
}
return true;
}
bool Context::getIntegerv(GLenum pname, GLint *params)
{
// Please note: DEPTH_CLEAR_VALUE is not included in our internal getIntegerv implementation
// because it is stored as a float, despite the fact that the GL ES 2.0 spec names
// GetIntegerv as its native query function. As it would require conversion in any
// case, this should make no difference to the calling application. You may find it in
// Context::getFloatv.
switch (pname)
{
case GL_MAX_VERTEX_ATTRIBS: *params = gl::MAX_VERTEX_ATTRIBS; break;
case GL_MAX_VERTEX_UNIFORM_VECTORS: *params = mRenderer->getMaxVertexUniformVectors(); break;
case GL_MAX_VARYING_VECTORS: *params = mRenderer->getMaxVaryingVectors(); break;
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS: *params = mRenderer->getMaxCombinedTextureImageUnits(); break;
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS: *params = mRenderer->getMaxVertexTextureImageUnits(); break;
case GL_MAX_TEXTURE_IMAGE_UNITS: *params = gl::MAX_TEXTURE_IMAGE_UNITS; break;
case GL_MAX_FRAGMENT_UNIFORM_VECTORS: *params = mRenderer->getMaxFragmentUniformVectors(); break;
case GL_MAX_RENDERBUFFER_SIZE: *params = getMaximumRenderbufferDimension(); break;
case GL_NUM_SHADER_BINARY_FORMATS: *params = 0; break;
case GL_SHADER_BINARY_FORMATS: /* no shader binary formats are supported */ break;
case GL_ARRAY_BUFFER_BINDING: *params = mState.arrayBuffer.id(); break;
case GL_ELEMENT_ARRAY_BUFFER_BINDING: *params = mState.elementArrayBuffer.id(); break;
//case GL_FRAMEBUFFER_BINDING: // now equivalent to GL_DRAW_FRAMEBUFFER_BINDING_ANGLE
case GL_DRAW_FRAMEBUFFER_BINDING_ANGLE: *params = mState.drawFramebuffer; break;
case GL_READ_FRAMEBUFFER_BINDING_ANGLE: *params = mState.readFramebuffer; break;
case GL_RENDERBUFFER_BINDING: *params = mState.renderbuffer.id(); break;
case GL_CURRENT_PROGRAM: *params = mState.currentProgram; break;
case GL_PACK_ALIGNMENT: *params = mState.packAlignment; break;
case GL_PACK_REVERSE_ROW_ORDER_ANGLE: *params = mState.packReverseRowOrder; break;
case GL_UNPACK_ALIGNMENT: *params = mState.unpackAlignment; break;
case GL_GENERATE_MIPMAP_HINT: *params = mState.generateMipmapHint; break;
case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES: *params = mState.fragmentShaderDerivativeHint; break;
case GL_ACTIVE_TEXTURE: *params = (mState.activeSampler + GL_TEXTURE0); break;
case GL_STENCIL_FUNC: *params = mState.depthStencil.stencilFunc; break;
case GL_STENCIL_REF: *params = mState.stencilRef; break;
case GL_STENCIL_VALUE_MASK: *params = mState.depthStencil.stencilMask; break;
case GL_STENCIL_BACK_FUNC: *params = mState.depthStencil.stencilBackFunc; break;
case GL_STENCIL_BACK_REF: *params = mState.stencilBackRef; break;
case GL_STENCIL_BACK_VALUE_MASK: *params = mState.depthStencil.stencilBackMask; break;
case GL_STENCIL_FAIL: *params = mState.depthStencil.stencilFail; break;
case GL_STENCIL_PASS_DEPTH_FAIL: *params = mState.depthStencil.stencilPassDepthFail; break;
case GL_STENCIL_PASS_DEPTH_PASS: *params = mState.depthStencil.stencilPassDepthPass; break;
case GL_STENCIL_BACK_FAIL: *params = mState.depthStencil.stencilBackFail; break;
case GL_STENCIL_BACK_PASS_DEPTH_FAIL: *params = mState.depthStencil.stencilBackPassDepthFail; break;
case GL_STENCIL_BACK_PASS_DEPTH_PASS: *params = mState.depthStencil.stencilBackPassDepthPass; break;
case GL_DEPTH_FUNC: *params = mState.depthStencil.depthFunc; break;
case GL_BLEND_SRC_RGB: *params = mState.blend.sourceBlendRGB; break;
case GL_BLEND_SRC_ALPHA: *params = mState.blend.sourceBlendAlpha; break;
case GL_BLEND_DST_RGB: *params = mState.blend.destBlendRGB; break;
case GL_BLEND_DST_ALPHA: *params = mState.blend.destBlendAlpha; break;
case GL_BLEND_EQUATION_RGB: *params = mState.blend.blendEquationRGB; break;
case GL_BLEND_EQUATION_ALPHA: *params = mState.blend.blendEquationAlpha; break;
case GL_STENCIL_WRITEMASK: *params = mState.depthStencil.stencilWritemask; break;
case GL_STENCIL_BACK_WRITEMASK: *params = mState.depthStencil.stencilBackWritemask; break;
case GL_STENCIL_CLEAR_VALUE: *params = mState.stencilClearValue; break;
case GL_SUBPIXEL_BITS: *params = 4; break;
case GL_MAX_TEXTURE_SIZE: *params = getMaximumTextureDimension(); break;
case GL_MAX_CUBE_MAP_TEXTURE_SIZE: *params = getMaximumCubeTextureDimension(); break;
case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
params[0] = mNumCompressedTextureFormats;
break;
case GL_MAX_SAMPLES_ANGLE:
{
GLsizei maxSamples = getMaxSupportedSamples();
if (maxSamples != 0)
{
*params = maxSamples;
}
else
{
return false;
}
break;
}
case GL_SAMPLE_BUFFERS:
case GL_SAMPLES:
{
gl::Framebuffer *framebuffer = getDrawFramebuffer();
if (framebuffer->completeness() == GL_FRAMEBUFFER_COMPLETE)
{
switch (pname)
{
case GL_SAMPLE_BUFFERS:
if (framebuffer->getSamples() != 0)
{
*params = 1;
}
else
{
*params = 0;
}
break;
case GL_SAMPLES:
*params = framebuffer->getSamples();
break;
}
}
else
{
*params = 0;
}
}
break;
case GL_IMPLEMENTATION_COLOR_READ_TYPE:
case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
{
GLenum format, type;
if (getCurrentReadFormatType(&format, &type))
{
if (pname == GL_IMPLEMENTATION_COLOR_READ_FORMAT)
*params = format;
else
*params = type;
}
}
break;
case GL_MAX_VIEWPORT_DIMS:
{
params[0] = mMaxViewportDimension;
params[1] = mMaxViewportDimension;
}
break;
case GL_COMPRESSED_TEXTURE_FORMATS:
{
if (supportsDXT1Textures())
{
*params++ = GL_COMPRESSED_RGB_S3TC_DXT1_EXT;
*params++ = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
}
if (supportsDXT3Textures())
{
*params++ = GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE;
}
if (supportsDXT5Textures())
{
*params++ = GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE;
}
}
break;
case GL_VIEWPORT:
params[0] = mState.viewport.x;
params[1] = mState.viewport.y;
params[2] = mState.viewport.width;
params[3] = mState.viewport.height;
break;
case GL_SCISSOR_BOX:
params[0] = mState.scissor.x;
params[1] = mState.scissor.y;
params[2] = mState.scissor.width;
params[3] = mState.scissor.height;
break;
case GL_CULL_FACE_MODE: *params = mState.rasterizer.cullMode; break;
case GL_FRONT_FACE: *params = mState.rasterizer.frontFace; break;
case GL_RED_BITS:
case GL_GREEN_BITS:
case GL_BLUE_BITS:
case GL_ALPHA_BITS:
{
gl::Framebuffer *framebuffer = getDrawFramebuffer();
gl::Renderbuffer *colorbuffer = framebuffer->getColorbuffer();
if (colorbuffer)
{
switch (pname)
{
case GL_RED_BITS: *params = colorbuffer->getRedSize(); break;
case GL_GREEN_BITS: *params = colorbuffer->getGreenSize(); break;
case GL_BLUE_BITS: *params = colorbuffer->getBlueSize(); break;
case GL_ALPHA_BITS: *params = colorbuffer->getAlphaSize(); break;
}
}
else
{
*params = 0;
}
}
break;
case GL_DEPTH_BITS:
{
gl::Framebuffer *framebuffer = getDrawFramebuffer();
gl::Renderbuffer *depthbuffer = framebuffer->getDepthbuffer();
if (depthbuffer)
{
*params = depthbuffer->getDepthSize();
}
else
{
*params = 0;
}
}
break;
case GL_STENCIL_BITS:
{
gl::Framebuffer *framebuffer = getDrawFramebuffer();
gl::Renderbuffer *stencilbuffer = framebuffer->getStencilbuffer();
if (stencilbuffer)
{
*params = stencilbuffer->getStencilSize();
}
else
{
*params = 0;
}
}
break;
case GL_TEXTURE_BINDING_2D:
{
if (mState.activeSampler > mRenderer->getMaxCombinedTextureImageUnits() - 1)
{
gl::error(GL_INVALID_OPERATION);
return false;
}
*params = mState.samplerTexture[TEXTURE_2D][mState.activeSampler].id();
}
break;
case GL_TEXTURE_BINDING_CUBE_MAP:
{
if (mState.activeSampler > mRenderer->getMaxCombinedTextureImageUnits() - 1)
{
gl::error(GL_INVALID_OPERATION);
return false;
}
*params = mState.samplerTexture[TEXTURE_CUBE][mState.activeSampler].id();
}
break;
case GL_RESET_NOTIFICATION_STRATEGY_EXT:
*params = mResetStrategy;
break;
case GL_NUM_PROGRAM_BINARY_FORMATS_OES:
*params = 1;
break;
case GL_PROGRAM_BINARY_FORMATS_OES:
*params = GL_PROGRAM_BINARY_ANGLE;
break;
default:
return false;
}
return true;
}
bool Context::getQueryParameterInfo(GLenum pname, GLenum *type, unsigned int *numParams)
{
// Please note: the query type returned for DEPTH_CLEAR_VALUE in this implementation
// is FLOAT rather than INT, as would be suggested by the GL ES 2.0 spec. This is due
// to the fact that it is stored internally as a float, and so would require conversion
// if returned from Context::getIntegerv. Since this conversion is already implemented
// in the case that one calls glGetIntegerv to retrieve a float-typed state variable, we
// place DEPTH_CLEAR_VALUE with the floats. This should make no difference to the calling
// application.
switch (pname)
{
case GL_COMPRESSED_TEXTURE_FORMATS:
{
*type = GL_INT;
*numParams = mNumCompressedTextureFormats;
}
break;
case GL_SHADER_BINARY_FORMATS:
{
*type = GL_INT;
*numParams = 0;
}
break;
case GL_MAX_VERTEX_ATTRIBS:
case GL_MAX_VERTEX_UNIFORM_VECTORS:
case GL_MAX_VARYING_VECTORS:
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
case GL_MAX_TEXTURE_IMAGE_UNITS:
case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
case GL_MAX_RENDERBUFFER_SIZE:
case GL_NUM_SHADER_BINARY_FORMATS:
case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
case GL_ARRAY_BUFFER_BINDING:
case GL_FRAMEBUFFER_BINDING:
case GL_RENDERBUFFER_BINDING:
case GL_CURRENT_PROGRAM:
case GL_PACK_ALIGNMENT:
case GL_PACK_REVERSE_ROW_ORDER_ANGLE:
case GL_UNPACK_ALIGNMENT:
case GL_GENERATE_MIPMAP_HINT:
case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES:
case GL_RED_BITS:
case GL_GREEN_BITS:
case GL_BLUE_BITS:
case GL_ALPHA_BITS:
case GL_DEPTH_BITS:
case GL_STENCIL_BITS:
case GL_ELEMENT_ARRAY_BUFFER_BINDING:
case GL_CULL_FACE_MODE:
case GL_FRONT_FACE:
case GL_ACTIVE_TEXTURE:
case GL_STENCIL_FUNC:
case GL_STENCIL_VALUE_MASK:
case GL_STENCIL_REF:
case GL_STENCIL_FAIL:
case GL_STENCIL_PASS_DEPTH_FAIL:
case GL_STENCIL_PASS_DEPTH_PASS:
case GL_STENCIL_BACK_FUNC:
case GL_STENCIL_BACK_VALUE_MASK:
case GL_STENCIL_BACK_REF:
case GL_STENCIL_BACK_FAIL:
case GL_STENCIL_BACK_PASS_DEPTH_FAIL:
case GL_STENCIL_BACK_PASS_DEPTH_PASS:
case GL_DEPTH_FUNC:
case GL_BLEND_SRC_RGB:
case GL_BLEND_SRC_ALPHA:
case GL_BLEND_DST_RGB:
case GL_BLEND_DST_ALPHA:
case GL_BLEND_EQUATION_RGB:
case GL_BLEND_EQUATION_ALPHA:
case GL_STENCIL_WRITEMASK:
case GL_STENCIL_BACK_WRITEMASK:
case GL_STENCIL_CLEAR_VALUE:
case GL_SUBPIXEL_BITS:
case GL_MAX_TEXTURE_SIZE:
case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
case GL_SAMPLE_BUFFERS:
case GL_SAMPLES:
case GL_IMPLEMENTATION_COLOR_READ_TYPE:
case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
case GL_TEXTURE_BINDING_2D:
case GL_TEXTURE_BINDING_CUBE_MAP:
case GL_RESET_NOTIFICATION_STRATEGY_EXT:
case GL_NUM_PROGRAM_BINARY_FORMATS_OES:
case GL_PROGRAM_BINARY_FORMATS_OES:
{
*type = GL_INT;
*numParams = 1;
}
break;
case GL_MAX_SAMPLES_ANGLE:
{
if (getMaxSupportedSamples() != 0)
{
*type = GL_INT;
*numParams = 1;
}
else
{
return false;
}
}
break;
case GL_MAX_VIEWPORT_DIMS:
{
*type = GL_INT;
*numParams = 2;
}
break;
case GL_VIEWPORT:
case GL_SCISSOR_BOX:
{
*type = GL_INT;
*numParams = 4;
}
break;
case GL_SHADER_COMPILER:
case GL_SAMPLE_COVERAGE_INVERT:
case GL_DEPTH_WRITEMASK:
case GL_CULL_FACE: // CULL_FACE through DITHER are natural to IsEnabled,
case GL_POLYGON_OFFSET_FILL: // but can be retrieved through the Get{Type}v queries.
case GL_SAMPLE_ALPHA_TO_COVERAGE: // For this purpose, they are treated here as bool-natural
case GL_SAMPLE_COVERAGE:
case GL_SCISSOR_TEST:
case GL_STENCIL_TEST:
case GL_DEPTH_TEST:
case GL_BLEND:
case GL_DITHER:
case GL_CONTEXT_ROBUST_ACCESS_EXT:
{
*type = GL_BOOL;
*numParams = 1;
}
break;
case GL_COLOR_WRITEMASK:
{
*type = GL_BOOL;
*numParams = 4;
}
break;
case GL_POLYGON_OFFSET_FACTOR:
case GL_POLYGON_OFFSET_UNITS:
case GL_SAMPLE_COVERAGE_VALUE:
case GL_DEPTH_CLEAR_VALUE:
case GL_LINE_WIDTH:
{
*type = GL_FLOAT;
*numParams = 1;
}
break;
case GL_ALIASED_LINE_WIDTH_RANGE:
case GL_ALIASED_POINT_SIZE_RANGE:
case GL_DEPTH_RANGE:
{
*type = GL_FLOAT;
*numParams = 2;
}
break;
case GL_COLOR_CLEAR_VALUE:
case GL_BLEND_COLOR:
{
*type = GL_FLOAT;
*numParams = 4;
}
break;
case GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT:
if (!supportsTextureFilterAnisotropy())
{
return false;
}
*type = GL_FLOAT;
*numParams = 1;
break;
default:
return false;
}
return true;
}
// Applies the render target surface, depth stencil surface, viewport rectangle and
// scissor rectangle to the renderer
bool Context::applyRenderTarget(GLenum drawMode, bool ignoreViewport)
{
Framebuffer *framebufferObject = getDrawFramebuffer();
if (!framebufferObject || framebufferObject->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false);
}
mRenderer->applyRenderTarget(framebufferObject);
if (!mRenderer->setViewport(mState.viewport, mState.zNear, mState.zFar, drawMode, mState.rasterizer.frontFace,
ignoreViewport))
{
return false;
}
mRenderer->setScissorRectangle(mState.scissor, mState.scissorTest);
return true;
}
// Applies the fixed-function state (culling, depth test, alpha blending, stenciling, etc) to the Direct3D 9 device
void Context::applyState(GLenum drawMode)
{
mState.rasterizer.pointDrawMode = (drawMode == GL_POINTS);
mRenderer->setRasterizerState(mState.rasterizer);
unsigned int mask = 0;
if (mState.sampleCoverage)
{
if (mState.sampleCoverageValue != 0)
{
Framebuffer *framebufferObject = getDrawFramebuffer();
float threshold = 0.5f;
for (int i = 0; i < framebufferObject->getSamples(); ++i)
{
mask <<= 1;
if ((i + 1) * mState.sampleCoverageValue >= threshold)
{
threshold += 1.0f;
mask |= 1;
}
}
}
if (mState.sampleCoverageInvert)
{
mask = ~mask;
}
}
else
{
mask = 0xFFFFFFFF;
}
mRenderer->setBlendState(mState.blend, mState.blendColor, mask);
mRenderer->setDepthStencilState(mState.depthStencil, mState.stencilRef, mState.stencilBackRef,
mState.rasterizer.frontFace == GL_CCW);
}
// Applies the shaders and shader constants to the Direct3D 9 device
void Context::applyShaders()
{
ProgramBinary *programBinary = getCurrentProgramBinary();
mRenderer->applyShaders(programBinary);
programBinary->applyUniforms();
}
// Applies the textures and sampler states to the Direct3D 9 device
void Context::applyTextures()
{
applyTextures(SAMPLER_PIXEL);
if (mSupportsVertexTexture)
{
applyTextures(SAMPLER_VERTEX);
}
}
// For each Direct3D 9 sampler of either the pixel or vertex stage,
// looks up the corresponding OpenGL texture image unit and texture type,
// and sets the texture and its addressing/filtering state (or NULL when inactive).
void Context::applyTextures(SamplerType type)
{
ProgramBinary *programBinary = getCurrentProgramBinary();
// Range of Direct3D samplers of given sampler type
int samplerCount = (type == SAMPLER_PIXEL) ? MAX_TEXTURE_IMAGE_UNITS : mRenderer->getMaxVertexTextureImageUnits();
int samplerRange = programBinary->getUsedSamplerRange(type);
for (int samplerIndex = 0; samplerIndex < samplerRange; samplerIndex++)
{
int textureUnit = programBinary->getSamplerMapping(type, samplerIndex); // OpenGL texture image unit index
if (textureUnit != -1)
{
TextureType textureType = programBinary->getSamplerTextureType(type, samplerIndex);
Texture *texture = getSamplerTexture(textureUnit, textureType);
if (texture->isSamplerComplete())
{
SamplerState samplerState;
texture->getSamplerState(&samplerState);
mRenderer->setSamplerState(type, samplerIndex, samplerState);
mRenderer->setTexture(type, samplerIndex, texture);
texture->resetDirty();
}
else
{
mRenderer->setTexture(type, samplerIndex, getIncompleteTexture(textureType));
}
}
else
{
mRenderer->setTexture(type, samplerIndex, NULL);
}
}
for (int samplerIndex = samplerRange; samplerIndex < samplerCount; samplerIndex++)
{
mRenderer->setTexture(type, samplerIndex, NULL);
}
}
void Context::readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLsizei *bufSize, void* pixels)
{
Framebuffer *framebuffer = getReadFramebuffer();
if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION);
}
if (getReadFramebufferHandle() != 0 && framebuffer->getSamples() != 0)
{
return gl::error(GL_INVALID_OPERATION);
}
GLsizei outputPitch = ComputePitch(width, ConvertSizedInternalFormat(format, type), getPackAlignment());
// sized query sanity check
if (bufSize)
{
int requiredSize = outputPitch * height;
if (requiredSize > *bufSize)
{
return gl::error(GL_INVALID_OPERATION);
}
}
mRenderer->readPixels(framebuffer, x, y, width, height, format, type, outputPitch, getPackReverseRowOrder(), getPackAlignment(), pixels);
}
void Context::clear(GLbitfield mask)
{
Framebuffer *framebufferObject = getDrawFramebuffer();
if (!framebufferObject || framebufferObject->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION);
}
DWORD flags = 0;
GLbitfield finalMask = 0;
if (mask & GL_COLOR_BUFFER_BIT)
{
mask &= ~GL_COLOR_BUFFER_BIT;
if (framebufferObject->getColorbufferType() != GL_NONE)
{
finalMask |= GL_COLOR_BUFFER_BIT;
}
}
if (mask & GL_DEPTH_BUFFER_BIT)
{
mask &= ~GL_DEPTH_BUFFER_BIT;
if (mState.depthStencil.depthMask && framebufferObject->getDepthbufferType() != GL_NONE)
{
finalMask |= GL_DEPTH_BUFFER_BIT;
}
}
if (mask & GL_STENCIL_BUFFER_BIT)
{
mask &= ~GL_STENCIL_BUFFER_BIT;
if (framebufferObject->getStencilbufferType() != GL_NONE)
{
rx::RenderTarget *depthStencil = framebufferObject->getStencilbuffer()->getDepthStencil();
if (!depthStencil)
{
ERR("Depth stencil pointer unexpectedly null.");
return;
}
if (GetStencilSize(depthStencil->getActualFormat()) > 0)
{
finalMask |= GL_STENCIL_BUFFER_BIT;
}
}
}
if (mask != 0)
{
return gl::error(GL_INVALID_VALUE);
}
if (!applyRenderTarget(GL_TRIANGLES, true)) // Clips the clear to the scissor rectangle but not the viewport
{
return;
}
ClearParameters clearParams;
clearParams.mask = finalMask;
clearParams.colorClearValue = mState.colorClearValue;
clearParams.colorMaskRed = mState.blend.colorMaskRed;
clearParams.colorMaskGreen = mState.blend.colorMaskGreen;
clearParams.colorMaskBlue = mState.blend.colorMaskBlue;
clearParams.colorMaskAlpha = mState.blend.colorMaskAlpha;
clearParams.depthClearValue = mState.depthClearValue;
clearParams.stencilClearValue = mState.stencilClearValue;
clearParams.stencilWriteMask = mState.depthStencil.stencilWritemask;
mRenderer->clear(clearParams, framebufferObject);
}
void Context::drawArrays(GLenum mode, GLint first, GLsizei count, GLsizei instances)
{
if (!mState.currentProgram)
{
return gl::error(GL_INVALID_OPERATION);
}
if (!mRenderer->applyPrimitiveType(mode, count))
{
return;
}
if (!applyRenderTarget(mode, false))
{
return;
}
applyState(mode);
ProgramBinary *programBinary = getCurrentProgramBinary();
GLenum err = mRenderer->applyVertexBuffer(programBinary, mState.vertexAttribute, first, count, instances);
if (err != GL_NO_ERROR)
{
return gl::error(err);
}
applyShaders();
applyTextures();
if (!programBinary->validateSamplers(NULL))
{
return gl::error(GL_INVALID_OPERATION);
}
if (!skipDraw(mode))
{
mRenderer->drawArrays(mode, count, instances);
}
}
void Context::drawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei instances)
{
if (!mState.currentProgram)
{
return gl::error(GL_INVALID_OPERATION);
}
if (!indices && !mState.elementArrayBuffer)
{
return gl::error(GL_INVALID_OPERATION);
}
if (!mRenderer->applyPrimitiveType(mode, count))
{
return;
}
if (!applyRenderTarget(mode, false))
{
return;
}
applyState(mode);
rx::TranslatedIndexData indexInfo;
GLenum err = mRenderer->applyIndexBuffer(indices, mState.elementArrayBuffer.get(), count, mode, type, &indexInfo);
if (err != GL_NO_ERROR)
{
return gl::error(err);
}
ProgramBinary *programBinary = getCurrentProgramBinary();
GLsizei vertexCount = indexInfo.maxIndex - indexInfo.minIndex + 1;
err = mRenderer->applyVertexBuffer(programBinary, mState.vertexAttribute, indexInfo.minIndex, vertexCount, instances);
if (err != GL_NO_ERROR)
{
return gl::error(err);
}
applyShaders();
applyTextures();
if (!programBinary->validateSamplers(NULL))
{
return gl::error(GL_INVALID_OPERATION);
}
if (!skipDraw(mode))
{
mRenderer->drawElements(mode, count, type, indices, mState.elementArrayBuffer.get(), indexInfo, instances);
}
}
// Implements glFlush when block is false, glFinish when block is true
void Context::sync(bool block)
{
mRenderer->sync(block);
}
void Context::recordInvalidEnum()
{
mInvalidEnum = true;
}
void Context::recordInvalidValue()
{
mInvalidValue = true;
}
void Context::recordInvalidOperation()
{
mInvalidOperation = true;
}
void Context::recordOutOfMemory()
{
mOutOfMemory = true;
}
void Context::recordInvalidFramebufferOperation()
{
mInvalidFramebufferOperation = true;
}
// Get one of the recorded errors and clear its flag, if any.
// [OpenGL ES 2.0.24] section 2.5 page 13.
GLenum Context::getError()
{
if (mInvalidEnum)
{
mInvalidEnum = false;
return GL_INVALID_ENUM;
}
if (mInvalidValue)
{
mInvalidValue = false;
return GL_INVALID_VALUE;
}
if (mInvalidOperation)
{
mInvalidOperation = false;
return GL_INVALID_OPERATION;
}
if (mOutOfMemory)
{
mOutOfMemory = false;
return GL_OUT_OF_MEMORY;
}
if (mInvalidFramebufferOperation)
{
mInvalidFramebufferOperation = false;
return GL_INVALID_FRAMEBUFFER_OPERATION;
}
return GL_NO_ERROR;
}
GLenum Context::getResetStatus()
{
if (mResetStatus == GL_NO_ERROR && !mContextLost)
{
// mResetStatus will be set by the markContextLost callback
// in the case a notification is sent
mRenderer->testDeviceLost(true);
}
GLenum status = mResetStatus;
if (mResetStatus != GL_NO_ERROR)
{
ASSERT(mContextLost);
if (mRenderer->testDeviceResettable())
{
mResetStatus = GL_NO_ERROR;
}
}
return status;
}
bool Context::isResetNotificationEnabled()
{
return (mResetStrategy == GL_LOSE_CONTEXT_ON_RESET_EXT);
}
int Context::getMajorShaderModel() const
{
return mMajorShaderModel;
}
float Context::getMaximumPointSize() const
{
return mMaximumPointSize;
}
unsigned int Context::getMaximumCombinedTextureImageUnits() const
{
return mRenderer->getMaxCombinedTextureImageUnits();
}
int Context::getMaxSupportedSamples() const
{
return mRenderer->getMaxSupportedSamples();
}
bool Context::supportsEventQueries() const
{
return mSupportsEventQueries;
}
bool Context::supportsOcclusionQueries() const
{
return mSupportsOcclusionQueries;
}
bool Context::supportsBGRATextures() const
{
return mSupportsBGRATextures;
}
bool Context::supportsDXT1Textures() const
{
return mSupportsDXT1Textures;
}
bool Context::supportsDXT3Textures() const
{
return mSupportsDXT3Textures;
}
bool Context::supportsDXT5Textures() const
{
return mSupportsDXT5Textures;
}
bool Context::supportsFloat32Textures() const
{
return mSupportsFloat32Textures;
}
bool Context::supportsFloat32LinearFilter() const
{
return mSupportsFloat32LinearFilter;
}
bool Context::supportsFloat32RenderableTextures() const
{
return mSupportsFloat32RenderableTextures;
}
bool Context::supportsFloat16Textures() const
{
return mSupportsFloat16Textures;
}
bool Context::supportsFloat16LinearFilter() const
{
return mSupportsFloat16LinearFilter;
}
bool Context::supportsFloat16RenderableTextures() const
{
return mSupportsFloat16RenderableTextures;
}
int Context::getMaximumRenderbufferDimension() const
{
return mMaxRenderbufferDimension;
}
int Context::getMaximumTextureDimension() const
{
return mMaxTextureDimension;
}
int Context::getMaximumCubeTextureDimension() const
{
return mMaxCubeTextureDimension;
}
int Context::getMaximumTextureLevel() const
{
return mMaxTextureLevel;
}
bool Context::supportsLuminanceTextures() const
{
return mSupportsLuminanceTextures;
}
bool Context::supportsLuminanceAlphaTextures() const
{
return mSupportsLuminanceAlphaTextures;
}
bool Context::supportsDepthTextures() const
{
return mSupportsDepthTextures;
}
bool Context::supports32bitIndices() const
{
return mSupports32bitIndices;
}
bool Context::supportsNonPower2Texture() const
{
return mSupportsNonPower2Texture;
}
bool Context::supportsInstancing() const
{
return mSupportsInstancing;
}
bool Context::supportsTextureFilterAnisotropy() const
{
return mSupportsTextureFilterAnisotropy;
}
float Context::getTextureMaxAnisotropy() const
{
return mMaxTextureAnisotropy;
}
bool Context::getCurrentReadFormatType(GLenum *format, GLenum *type)
{
Framebuffer *framebuffer = getReadFramebuffer();
if (!framebuffer || framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
return gl::error(GL_INVALID_OPERATION, false);
}
Renderbuffer *renderbuffer = framebuffer->getColorbuffer();
if (!renderbuffer)
{
return gl::error(GL_INVALID_OPERATION, false);
}
*format = gl::ExtractFormat(renderbuffer->getActualFormat());
*type = gl::ExtractType(renderbuffer->getActualFormat());
return true;
}
void Context::detachBuffer(GLuint buffer)
{
// [OpenGL ES 2.0.24] section 2.9 page 22:
// If a buffer object is deleted while it is bound, all bindings to that object in the current context
// (i.e. in the thread that called Delete-Buffers) are reset to zero.
if (mState.arrayBuffer.id() == buffer)
{
mState.arrayBuffer.set(NULL);
}
if (mState.elementArrayBuffer.id() == buffer)
{
mState.elementArrayBuffer.set(NULL);
}
for (int attribute = 0; attribute < MAX_VERTEX_ATTRIBS; attribute++)
{
if (mState.vertexAttribute[attribute].mBoundBuffer.id() == buffer)
{
mState.vertexAttribute[attribute].mBoundBuffer.set(NULL);
}
}
}
void Context::detachTexture(GLuint texture)
{
// [OpenGL ES 2.0.24] section 3.8 page 84:
// If a texture object is deleted, it is as if all texture units which are bound to that texture object are
// rebound to texture object zero
for (int type = 0; type < TEXTURE_TYPE_COUNT; type++)
{
for (int sampler = 0; sampler < IMPLEMENTATION_MAX_COMBINED_TEXTURE_IMAGE_UNITS; sampler++)
{
if (mState.samplerTexture[type][sampler].id() == texture)
{
mState.samplerTexture[type][sampler].set(NULL);
}
}
}
// [OpenGL ES 2.0.24] section 4.4 page 112:
// If a texture object is deleted while its image is attached to the currently bound framebuffer, then it is
// as if FramebufferTexture2D had been called, with a texture of 0, for each attachment point to which this
// image was attached in the currently bound framebuffer.
Framebuffer *readFramebuffer = getReadFramebuffer();
Framebuffer *drawFramebuffer = getDrawFramebuffer();
if (readFramebuffer)
{
readFramebuffer->detachTexture(texture);
}
if (drawFramebuffer && drawFramebuffer != readFramebuffer)
{
drawFramebuffer->detachTexture(texture);
}
}
void Context::detachFramebuffer(GLuint framebuffer)
{
// [OpenGL ES 2.0.24] section 4.4 page 107:
// If a framebuffer that is currently bound to the target FRAMEBUFFER is deleted, it is as though
// BindFramebuffer had been executed with the target of FRAMEBUFFER and framebuffer of zero.
if (mState.readFramebuffer == framebuffer)
{
bindReadFramebuffer(0);
}
if (mState.drawFramebuffer == framebuffer)
{
bindDrawFramebuffer(0);
}
}
void Context::detachRenderbuffer(GLuint renderbuffer)
{
// [OpenGL ES 2.0.24] section 4.4 page 109:
// If a renderbuffer that is currently bound to RENDERBUFFER is deleted, it is as though BindRenderbuffer
// had been executed with the target RENDERBUFFER and name of zero.
if (mState.renderbuffer.id() == renderbuffer)
{
bindRenderbuffer(0);
}
// [OpenGL ES 2.0.24] section 4.4 page 111:
// If a renderbuffer object is deleted while its image is attached to the currently bound framebuffer,
// then it is as if FramebufferRenderbuffer had been called, with a renderbuffer of 0, for each attachment
// point to which this image was attached in the currently bound framebuffer.
Framebuffer *readFramebuffer = getReadFramebuffer();
Framebuffer *drawFramebuffer = getDrawFramebuffer();
if (readFramebuffer)
{
readFramebuffer->detachRenderbuffer(renderbuffer);
}
if (drawFramebuffer && drawFramebuffer != readFramebuffer)
{
drawFramebuffer->detachRenderbuffer(renderbuffer);
}
}
Texture *Context::getIncompleteTexture(TextureType type)
{
Texture *t = mIncompleteTextures[type].get();
if (t == NULL)
{
static const GLubyte color[] = { 0, 0, 0, 255 };
switch (type)
{
default:
UNREACHABLE();
// default falls through to TEXTURE_2D
case TEXTURE_2D:
{
Texture2D *incomplete2d = new Texture2D(mRenderer, Texture::INCOMPLETE_TEXTURE_ID);
incomplete2d->setImage(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
t = incomplete2d;
}
break;
case TEXTURE_CUBE:
{
TextureCubeMap *incompleteCube = new TextureCubeMap(mRenderer, Texture::INCOMPLETE_TEXTURE_ID);
incompleteCube->setImagePosX(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
incompleteCube->setImageNegX(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
incompleteCube->setImagePosY(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
incompleteCube->setImageNegY(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
incompleteCube->setImagePosZ(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
incompleteCube->setImageNegZ(0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 1, color);
t = incompleteCube;
}
break;
}
mIncompleteTextures[type].set(t);
}
return t;
}
bool Context::skipDraw(GLenum drawMode)
{
if (drawMode == GL_POINTS)
{
// ProgramBinary assumes non-point rendering if gl_PointSize isn't written,
// which affects varying interpolation. Since the value of gl_PointSize is
// undefined when not written, just skip drawing to avoid unexpected results.
if (!getCurrentProgramBinary()->usesPointSize())
{
// This is stictly speaking not an error, but developers should be
// notified of risking undefined behavior.
ERR("Point rendering without writing to gl_PointSize.");
return true;
}
}
else if (IsTriangleMode(drawMode))
{
if (mState.rasterizer.cullFace && mState.rasterizer.cullMode == GL_FRONT_AND_BACK)
{
return true;
}
}
return false;
}
void Context::setVertexAttrib(GLuint index, const GLfloat *values)
{
ASSERT(index < gl::MAX_VERTEX_ATTRIBS);
mState.vertexAttribute[index].mCurrentValue[0] = values[0];
mState.vertexAttribute[index].mCurrentValue[1] = values[1];
mState.vertexAttribute[index].mCurrentValue[2] = values[2];
mState.vertexAttribute[index].mCurrentValue[3] = values[3];
}
void Context::setVertexAttribDivisor(GLuint index, GLuint divisor)
{
ASSERT(index < gl::MAX_VERTEX_ATTRIBS);
mState.vertexAttribute[index].mDivisor = divisor;
}
// keep list sorted in following order
// OES extensions
// EXT extensions
// Vendor extensions
void Context::initExtensionString()
{
std::string extensionString = "";
// OES extensions
if (supports32bitIndices())
{
extensionString += "GL_OES_element_index_uint ";
}
extensionString += "GL_OES_packed_depth_stencil ";
extensionString += "GL_OES_get_program_binary ";
extensionString += "GL_OES_rgb8_rgba8 ";
if (mRenderer->getDerivativeInstructionSupport())
{
extensionString += "GL_OES_standard_derivatives ";
}
if (supportsFloat16Textures())
{
extensionString += "GL_OES_texture_half_float ";
}
if (supportsFloat16LinearFilter())
{
extensionString += "GL_OES_texture_half_float_linear ";
}
if (supportsFloat32Textures())
{
extensionString += "GL_OES_texture_float ";
}
if (supportsFloat32LinearFilter())
{
extensionString += "GL_OES_texture_float_linear ";
}
if (supportsNonPower2Texture())
{
extensionString += "GL_OES_texture_npot ";
}
// Multi-vendor (EXT) extensions
if (supportsOcclusionQueries())
{
extensionString += "GL_EXT_occlusion_query_boolean ";
}
extensionString += "GL_EXT_read_format_bgra ";
extensionString += "GL_EXT_robustness ";
if (supportsDXT1Textures())
{
extensionString += "GL_EXT_texture_compression_dxt1 ";
}
if (supportsTextureFilterAnisotropy())
{
extensionString += "GL_EXT_texture_filter_anisotropic ";
}
if (supportsBGRATextures())
{
extensionString += "GL_EXT_texture_format_BGRA8888 ";
}
extensionString += "GL_EXT_texture_storage ";
// ANGLE-specific extensions
if (supportsDepthTextures())
{
extensionString += "GL_ANGLE_depth_texture ";
}
extensionString += "GL_ANGLE_framebuffer_blit ";
if (getMaxSupportedSamples() != 0)
{
extensionString += "GL_ANGLE_framebuffer_multisample ";
}
if (supportsInstancing())
{
extensionString += "GL_ANGLE_instanced_arrays ";
}
extensionString += "GL_ANGLE_pack_reverse_row_order ";
if (supportsDXT3Textures())
{
extensionString += "GL_ANGLE_texture_compression_dxt3 ";
}
if (supportsDXT5Textures())
{
extensionString += "GL_ANGLE_texture_compression_dxt5 ";
}
extensionString += "GL_ANGLE_texture_usage ";
extensionString += "GL_ANGLE_translated_shader_source ";
// Other vendor-specific extensions
if (supportsEventQueries())
{
extensionString += "GL_NV_fence ";
}
std::string::size_type end = extensionString.find_last_not_of(' ');
if (end != std::string::npos)
{
extensionString.resize(end+1);
}
mExtensionString = makeStaticString(extensionString);
}
const char *Context::getExtensionString() const
{
return mExtensionString;
}
void Context::initRendererString()
{
std::ostringstream rendererString;
rendererString << "ANGLE (";
rendererString << mRenderer->getRendererDescription();
rendererString << ")";
mRendererString = makeStaticString(rendererString.str());
}
const char *Context::getRendererString() const
{
return mRendererString;
}
void Context::blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
GLbitfield mask)
{
Framebuffer *readFramebuffer = getReadFramebuffer();
Framebuffer *drawFramebuffer = getDrawFramebuffer();
if (!readFramebuffer || readFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE ||
!drawFramebuffer || drawFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE)
{
return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION);
}
if (drawFramebuffer->getSamples() != 0)
{
return gl::error(GL_INVALID_OPERATION);
}
int readBufferWidth = readFramebuffer->getColorbuffer()->getWidth();
int readBufferHeight = readFramebuffer->getColorbuffer()->getHeight();
int drawBufferWidth = drawFramebuffer->getColorbuffer()->getWidth();
int drawBufferHeight = drawFramebuffer->getColorbuffer()->getHeight();
Rectangle sourceRect;
Rectangle destRect;
if (srcX0 < srcX1)
{
sourceRect.x = srcX0;
destRect.x = dstX0;
sourceRect.width = srcX1 - srcX0;
destRect.width = dstX1 - dstX0;
}
else
{
sourceRect.x = srcX1;
destRect.x = dstX1;
sourceRect.width = srcX0 - srcX1;
destRect.width = dstX0 - dstX1;
}
if (srcY0 < srcY1)
{
sourceRect.height = srcY1 - srcY0;
destRect.height = dstY1 - dstY0;
sourceRect.y = srcY0;
destRect.y = dstY0;
}
else
{
sourceRect.height = srcY0 - srcY1;
destRect.height = dstY0 - srcY1;
sourceRect.y = srcY1;
destRect.y = dstY1;
}
Rectangle sourceScissoredRect = sourceRect;
Rectangle destScissoredRect = destRect;
if (mState.scissorTest)
{
// Only write to parts of the destination framebuffer which pass the scissor test.
if (destRect.x < mState.scissor.x)
{
int xDiff = mState.scissor.x - destRect.x;
destScissoredRect.x = mState.scissor.x;
destScissoredRect.width -= xDiff;
sourceScissoredRect.x += xDiff;
sourceScissoredRect.width -= xDiff;
}
if (destRect.x + destRect.width > mState.scissor.x + mState.scissor.width)
{
int xDiff = (destRect.x + destRect.width) - (mState.scissor.x + mState.scissor.width);
destScissoredRect.width -= xDiff;
sourceScissoredRect.width -= xDiff;
}
if (destRect.y < mState.scissor.y)
{
int yDiff = mState.scissor.y - destRect.y;
destScissoredRect.y = mState.scissor.y;
destScissoredRect.height -= yDiff;
sourceScissoredRect.y += yDiff;
sourceScissoredRect.height -= yDiff;
}
if (destRect.y + destRect.height > mState.scissor.y + mState.scissor.height)
{
int yDiff = (destRect.y + destRect.height) - (mState.scissor.y + mState.scissor.height);
destScissoredRect.height -= yDiff;
sourceScissoredRect.height -= yDiff;
}
}
bool blitRenderTarget = false;
bool blitDepthStencil = false;
Rectangle sourceTrimmedRect = sourceScissoredRect;
Rectangle destTrimmedRect = destScissoredRect;
// The source & destination rectangles also may need to be trimmed if they fall out of the bounds of
// the actual draw and read surfaces.
if (sourceTrimmedRect.x < 0)
{
int xDiff = 0 - sourceTrimmedRect.x;
sourceTrimmedRect.x = 0;
sourceTrimmedRect.width -= xDiff;
destTrimmedRect.x += xDiff;
destTrimmedRect.width -= xDiff;
}
if (sourceTrimmedRect.x + sourceTrimmedRect.width > readBufferWidth)
{
int xDiff = (sourceTrimmedRect.x + sourceTrimmedRect.width) - readBufferWidth;
sourceTrimmedRect.width -= xDiff;
destTrimmedRect.width -= xDiff;
}
if (sourceTrimmedRect.y < 0)
{
int yDiff = 0 - sourceTrimmedRect.y;
sourceTrimmedRect.y = 0;
sourceTrimmedRect.height -= yDiff;
destTrimmedRect.y += yDiff;
destTrimmedRect.height -= yDiff;
}
if (sourceTrimmedRect.y + sourceTrimmedRect.height > readBufferHeight)
{
int yDiff = (sourceTrimmedRect.y + sourceTrimmedRect.height) - readBufferHeight;
sourceTrimmedRect.height -= yDiff;
destTrimmedRect.height -= yDiff;
}
if (destTrimmedRect.x < 0)
{
int xDiff = 0 - destTrimmedRect.x;
destTrimmedRect.x = 0;
destTrimmedRect.width -= xDiff;
sourceTrimmedRect.x += xDiff;
sourceTrimmedRect.width -= xDiff;
}
if (destTrimmedRect.x + destTrimmedRect.width > drawBufferWidth)
{
int xDiff = (destTrimmedRect.x + destTrimmedRect.width) - drawBufferWidth;
destTrimmedRect.width -= xDiff;
sourceTrimmedRect.width -= xDiff;
}
if (destTrimmedRect.y < 0)
{
int yDiff = 0 - destTrimmedRect.y;
destTrimmedRect.y = 0;
destTrimmedRect.height -= yDiff;
sourceTrimmedRect.y += yDiff;
sourceTrimmedRect.height -= yDiff;
}
if (destTrimmedRect.y + destTrimmedRect.height > drawBufferHeight)
{
int yDiff = (destTrimmedRect.y + destTrimmedRect.height) - drawBufferHeight;
destTrimmedRect.height -= yDiff;
sourceTrimmedRect.height -= yDiff;
}
bool partialBufferCopy = false;
if (sourceTrimmedRect.height < readBufferHeight ||
sourceTrimmedRect.width < readBufferWidth ||
destTrimmedRect.height < drawBufferHeight ||
destTrimmedRect.width < drawBufferWidth ||
sourceTrimmedRect.y != 0 || destTrimmedRect.y != 0 || sourceTrimmedRect.x != 0 || destTrimmedRect.x != 0)
{
partialBufferCopy = true;
}
if (mask & GL_COLOR_BUFFER_BIT)
{
const bool validReadType = readFramebuffer->getColorbufferType() == GL_TEXTURE_2D ||
readFramebuffer->getColorbufferType() == GL_RENDERBUFFER;
const bool validDrawType = drawFramebuffer->getColorbufferType() == GL_TEXTURE_2D ||
drawFramebuffer->getColorbufferType() == GL_RENDERBUFFER;
if (!validReadType || !validDrawType ||
readFramebuffer->getColorbuffer()->getActualFormat() != drawFramebuffer->getColorbuffer()->getActualFormat())
{
ERR("Color buffer format conversion in BlitFramebufferANGLE not supported by this implementation");
return gl::error(GL_INVALID_OPERATION);
}
if (partialBufferCopy && readFramebuffer->getSamples() != 0)
{
return gl::error(GL_INVALID_OPERATION);
}
blitRenderTarget = true;
}
if (mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
{
Renderbuffer *readDSBuffer = NULL;
Renderbuffer *drawDSBuffer = NULL;
// We support OES_packed_depth_stencil, and do not support a separately attached depth and stencil buffer, so if we have
// both a depth and stencil buffer, it will be the same buffer.
if (mask & GL_DEPTH_BUFFER_BIT)
{
if (readFramebuffer->getDepthbuffer() && drawFramebuffer->getDepthbuffer())
{
if (readFramebuffer->getDepthbufferType() != drawFramebuffer->getDepthbufferType() ||
readFramebuffer->getDepthbuffer()->getActualFormat() != drawFramebuffer->getDepthbuffer()->getActualFormat())
{
return gl::error(GL_INVALID_OPERATION);
}
blitDepthStencil = true;
readDSBuffer = readFramebuffer->getDepthbuffer();
drawDSBuffer = drawFramebuffer->getDepthbuffer();
}
}
if (mask & GL_STENCIL_BUFFER_BIT)
{
if (readFramebuffer->getStencilbuffer() && drawFramebuffer->getStencilbuffer())
{
if (readFramebuffer->getStencilbufferType() != drawFramebuffer->getStencilbufferType() ||
readFramebuffer->getStencilbuffer()->getActualFormat() != drawFramebuffer->getStencilbuffer()->getActualFormat())
{
return gl::error(GL_INVALID_OPERATION);
}
blitDepthStencil = true;
readDSBuffer = readFramebuffer->getStencilbuffer();
drawDSBuffer = drawFramebuffer->getStencilbuffer();
}
}
if (partialBufferCopy)
{
ERR("Only whole-buffer depth and stencil blits are supported by this implementation.");
return gl::error(GL_INVALID_OPERATION); // only whole-buffer copies are permitted
}
if ((drawDSBuffer && drawDSBuffer->getSamples() != 0) ||
(readDSBuffer && readDSBuffer->getSamples() != 0))
{
return gl::error(GL_INVALID_OPERATION);
}
}
if (blitRenderTarget || blitDepthStencil)
{
mRenderer->blitRect(readFramebuffer, sourceTrimmedRect, drawFramebuffer, destTrimmedRect, blitRenderTarget, blitDepthStencil);
}
}
}
extern "C"
{
gl::Context *glCreateContext(const gl::Context *shareContext, rx::Renderer *renderer, bool notifyResets, bool robustAccess)
{
return new gl::Context(shareContext, renderer, notifyResets, robustAccess);
}
void glDestroyContext(gl::Context *context)
{
delete context;
if (context == gl::getContext())
{
gl::makeCurrent(NULL, NULL, NULL);
}
}
void glMakeCurrent(gl::Context *context, egl::Display *display, egl::Surface *surface)
{
gl::makeCurrent(context, display, surface);
}
gl::Context *glGetCurrentContext()
{
return gl::getContext();
}
}