/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "CompositorOGL.h" #include // for size_t #include // for uint32_t, uint8_t #include // for free, malloc #include "GLContextProvider.h" // for GLContextProvider #include "GLContext.h" // for GLContext #include "GLUploadHelpers.h" #include "Layers.h" // for WriteSnapshotToDumpFile #include "LayerScope.h" // for LayerScope #include "gfx2DGlue.h" // for ThebesFilter #include "gfx3DMatrix.h" // for gfx3DMatrix #include "gfxASurface.h" // for gfxASurface, etc #include "gfxCrashReporterUtils.h" // for ScopedGfxFeatureReporter #include "gfxImageSurface.h" // for gfxImageSurface #include "gfxMatrix.h" // for gfxMatrix #include "GraphicsFilter.h" // for GraphicsFilter #include "gfxPlatform.h" // for gfxPlatform #include "gfxRect.h" // for gfxRect #include "gfxUtils.h" // for NextPowerOfTwo, gfxUtils, etc #include "mozilla/ArrayUtils.h" // for ArrayLength #include "mozilla/Preferences.h" // for Preferences #include "mozilla/gfx/BasePoint.h" // for BasePoint #include "mozilla/gfx/Matrix.h" // for Matrix4x4, Matrix #include "mozilla/layers/CompositingRenderTargetOGL.h" #include "mozilla/layers/Effects.h" // for EffectChain, TexturedEffect, etc #include "mozilla/layers/TextureHost.h" // for TextureSource, etc #include "mozilla/layers/TextureHostOGL.h" // for TextureSourceOGL, etc #include "mozilla/mozalloc.h" // for operator delete, etc #include "nsAString.h" #include "nsIConsoleService.h" // for nsIConsoleService, etc #include "nsIWidget.h" // for nsIWidget #include "nsLiteralString.h" // for NS_LITERAL_STRING #include "nsMathUtils.h" // for NS_roundf #include "nsRect.h" // for nsIntRect #include "nsServiceManagerUtils.h" // for do_GetService #include "nsString.h" // for nsString, nsAutoCString, etc #include "DecomposeIntoNoRepeatTriangles.h" #include "ScopedGLHelpers.h" #include "GLReadTexImageHelper.h" #if MOZ_ANDROID_OMTC #include "TexturePoolOGL.h" #endif #include "GeckoProfiler.h" #define BUFFER_OFFSET(i) ((char *)nullptr + (i)) namespace mozilla { using namespace gfx; namespace layers { using namespace mozilla::gl; static inline IntSize ns2gfxSize(const nsIntSize& s) { return IntSize(s.width, s.height); } static void BindMaskForProgram(ShaderProgramOGL* aProgram, TextureSourceOGL* aSourceMask, GLenum aTexUnit, const gfx::Matrix4x4& aTransform) { MOZ_ASSERT(LOCAL_GL_TEXTURE0 <= aTexUnit && aTexUnit <= LOCAL_GL_TEXTURE31); aSourceMask->BindTexture(aTexUnit); aProgram->SetMaskTextureUnit(aTexUnit - LOCAL_GL_TEXTURE0); aProgram->SetMaskLayerTransform(aTransform); } // Draw the given quads with the already selected shader. Texture coordinates // are supplied if the shader requires them. static void DrawQuads(GLContext *aGLContext, VBOArena &aVBOs, ShaderProgramOGL *aProg, RectTriangles &aRects) { NS_ASSERTION(aProg->HasInitialized(), "Shader program not correctly initialized"); GLuint vertAttribIndex = aProg->AttribLocation(ShaderProgramOGL::VertexCoordAttrib); GLuint texCoordAttribIndex = aProg->AttribLocation(ShaderProgramOGL::TexCoordAttrib); bool texCoords = (texCoordAttribIndex != GLuint(-1)); GLsizei elements = aRects.elements(); GLsizei bytes = elements * 2 * sizeof(GLfloat); GLsizei total = bytes; if (texCoords) { total *= 2; } aGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, aVBOs.Allocate(aGLContext)); aGLContext->fBufferData(LOCAL_GL_ARRAY_BUFFER, total, nullptr, LOCAL_GL_STREAM_DRAW); aGLContext->fBufferSubData(LOCAL_GL_ARRAY_BUFFER, 0, bytes, aRects.vertexPointer()); aGLContext->fEnableVertexAttribArray(vertAttribIndex); aGLContext->fVertexAttribPointer(vertAttribIndex, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, BUFFER_OFFSET(0)); if (texCoords) { aGLContext->fBufferSubData(LOCAL_GL_ARRAY_BUFFER, bytes, bytes, aRects.texCoordPointer()); aGLContext->fEnableVertexAttribArray(texCoordAttribIndex); aGLContext->fVertexAttribPointer(texCoordAttribIndex, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, BUFFER_OFFSET(bytes)); } aGLContext->fDrawArrays(LOCAL_GL_TRIANGLES, 0, elements); aGLContext->fDisableVertexAttribArray(vertAttribIndex); if (texCoords) { aGLContext->fDisableVertexAttribArray(texCoordAttribIndex); } aGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); } CompositorOGL::CompositorOGL(nsIWidget *aWidget, int aSurfaceWidth, int aSurfaceHeight, bool aUseExternalSurfaceSize) : mWidget(aWidget) , mWidgetSize(-1, -1) , mSurfaceSize(aSurfaceWidth, aSurfaceHeight) , mHasBGRA(0) , mUseExternalSurfaceSize(aUseExternalSurfaceSize) , mFrameInProgress(false) , mDestroyed(false) , mHeight(0) { MOZ_COUNT_CTOR(CompositorOGL); sBackend = LayersBackend::LAYERS_OPENGL; } CompositorOGL::~CompositorOGL() { MOZ_COUNT_DTOR(CompositorOGL); Destroy(); } already_AddRefed CompositorOGL::CreateContext() { nsRefPtr context; #ifdef XP_WIN if (PR_GetEnv("MOZ_LAYERS_PREFER_EGL")) { printf_stderr("Trying GL layers...\n"); context = gl::GLContextProviderEGL::CreateForWindow(mWidget); } #endif if (!context) context = gl::GLContextProvider::CreateForWindow(mWidget); if (!context) { NS_WARNING("Failed to create CompositorOGL context"); } return context.forget(); } void CompositorOGL::AddPrograms(ShaderProgramType aType) { for (uint32_t maskType = MaskNone; maskType < NumMaskTypes; ++maskType) { if (ProgramProfileOGL::ProgramExists(aType, static_cast(maskType))) { mPrograms[aType].mVariations[maskType] = new ShaderProgramOGL(this->gl(), ProgramProfileOGL::GetProfileFor(aType, static_cast(maskType))); } else { mPrograms[aType].mVariations[maskType] = nullptr; } } } GLuint CompositorOGL::GetTemporaryTexture(GLenum aTextureUnit) { size_t index = aTextureUnit - LOCAL_GL_TEXTURE0; // lazily grow the array of temporary textures if (mTextures.Length() <= index) { size_t prevLength = mTextures.Length(); mTextures.SetLength(index + 1); for(unsigned int i = prevLength; i <= index; ++i) { mTextures[i] = 0; } } // lazily initialize the temporary textures if (!mTextures[index]) { if (!gl()->MakeCurrent()) { return 0; } gl()->fGenTextures(1, &mTextures[index]); } return mTextures[index]; } void CompositorOGL::Destroy() { if (gl() && gl()->MakeCurrent()) { if (mTextures.Length() > 0) { gl()->fDeleteTextures(mTextures.Length(), &mTextures[0]); } mVBOs.Flush(gl()); } mTextures.SetLength(0); if (!mDestroyed) { mDestroyed = true; CleanupResources(); } } void CompositorOGL::CleanupResources() { if (!mGLContext) return; nsRefPtr ctx = mGLContext->GetSharedContext(); if (!ctx) { ctx = mGLContext; } mPrograms.Clear(); if (!ctx->MakeCurrent()) { mQuadVBO = 0; mGLContext = nullptr; return; } ctx->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); if (mQuadVBO) { ctx->fDeleteBuffers(1, &mQuadVBO); mQuadVBO = 0; } mGLContext = nullptr; } bool CompositorOGL::Initialize() { ScopedGfxFeatureReporter reporter("GL Layers", true); // Do not allow double initialization NS_ABORT_IF_FALSE(mGLContext == nullptr, "Don't reinitialize CompositorOGL"); mGLContext = CreateContext(); #ifdef MOZ_WIDGET_ANDROID if (!mGLContext) NS_RUNTIMEABORT("We need a context on Android"); #endif if (!mGLContext) return false; MakeCurrent(); mHasBGRA = mGLContext->IsExtensionSupported(gl::GLContext::EXT_texture_format_BGRA8888) || mGLContext->IsExtensionSupported(gl::GLContext::EXT_bgra); mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA, LOCAL_GL_ONE, LOCAL_GL_ONE); mGLContext->fEnable(LOCAL_GL_BLEND); mPrograms.AppendElements(NumProgramTypes); for (int type = 0; type < NumProgramTypes; ++type) { AddPrograms(static_cast(type)); } // initialise a common shader to check that we can actually compile a shader if (!mPrograms[RGBALayerProgramType].mVariations[MaskNone]->Initialize()) { return false; } if (mGLContext->WorkAroundDriverBugs()) { /** * We'll test the ability here to bind NPOT textures to a framebuffer, if * this fails we'll try ARB_texture_rectangle. */ GLenum textureTargets[] = { LOCAL_GL_TEXTURE_2D, LOCAL_GL_NONE }; if (mGLContext->IsGLES2()) { textureTargets[1] = LOCAL_GL_TEXTURE_RECTANGLE_ARB; } mFBOTextureTarget = LOCAL_GL_NONE; GLuint testFBO = 0; mGLContext->fGenFramebuffers(1, &testFBO); GLuint testTexture = 0; for (uint32_t i = 0; i < ArrayLength(textureTargets); i++) { GLenum target = textureTargets[i]; if (!target) continue; mGLContext->fGenTextures(1, &testTexture); mGLContext->fBindTexture(target, testTexture); mGLContext->fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_NEAREST); mGLContext->fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_NEAREST); mGLContext->fTexImage2D(target, 0, LOCAL_GL_RGBA, 5, 3, /* sufficiently NPOT */ 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, nullptr); // unbind this texture, in preparation for binding it to the FBO mGLContext->fBindTexture(target, 0); mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, testFBO); mGLContext->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0, target, testTexture, 0); if (mGLContext->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER) == LOCAL_GL_FRAMEBUFFER_COMPLETE) { mFBOTextureTarget = target; mGLContext->fDeleteTextures(1, &testTexture); break; } mGLContext->fDeleteTextures(1, &testTexture); } if (testFBO) { mGLContext->fDeleteFramebuffers(1, &testFBO); } if (mFBOTextureTarget == LOCAL_GL_NONE) { /* Unable to find a texture target that works with FBOs and NPOT textures */ return false; } } else { // not trying to work around driver bugs, so TEXTURE_2D should just work mFBOTextureTarget = LOCAL_GL_TEXTURE_2D; } // back to default framebuffer, to avoid confusion mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); if (mFBOTextureTarget == LOCAL_GL_TEXTURE_RECTANGLE_ARB) { /* If we're using TEXTURE_RECTANGLE, then we must have the ARB * extension -- the EXT variant does not provide support for * texture rectangle access inside GLSL (sampler2DRect, * texture2DRect). */ if (!mGLContext->IsExtensionSupported(gl::GLContext::ARB_texture_rectangle)) return false; } /* Create a simple quad VBO */ mGLContext->fGenBuffers(1, &mQuadVBO); mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mQuadVBO); GLfloat vertices[] = { /* First quad vertices */ 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, /* Then quad texcoords */ 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, /* Then flipped quad texcoords */ 0.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, }; mGLContext->fBufferData(LOCAL_GL_ARRAY_BUFFER, sizeof(vertices), vertices, LOCAL_GL_STATIC_DRAW); mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); nsCOMPtr console(do_GetService(NS_CONSOLESERVICE_CONTRACTID)); if (console) { nsString msg; msg += NS_LITERAL_STRING("OpenGL compositor Initialized Succesfully.\nVersion: "); msg += NS_ConvertUTF8toUTF16( nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_VERSION))); msg += NS_LITERAL_STRING("\nVendor: "); msg += NS_ConvertUTF8toUTF16( nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_VENDOR))); msg += NS_LITERAL_STRING("\nRenderer: "); msg += NS_ConvertUTF8toUTF16( nsDependentCString((const char*)mGLContext->fGetString(LOCAL_GL_RENDERER))); msg += NS_LITERAL_STRING("\nFBO Texture Target: "); if (mFBOTextureTarget == LOCAL_GL_TEXTURE_2D) msg += NS_LITERAL_STRING("TEXTURE_2D"); else msg += NS_LITERAL_STRING("TEXTURE_RECTANGLE"); console->LogStringMessage(msg.get()); } reporter.SetSuccessful(); return true; } // |aTextureTransform| is the texture transform that will be set on // aProg, possibly multiplied with another texture transform of our // own. // |aTexCoordRect| is the rectangle from the texture that we want to // draw using the given program. The program already has a necessary // offset and scale, so the geometry that needs to be drawn is a unit // square from 0,0 to 1,1. // // |aTexture| is the texture we are drawing. Its actual size can be // larger than the rectangle given by |aTexCoordRect|. void CompositorOGL::BindAndDrawQuadWithTextureRect(ShaderProgramOGL *aProg, const gfx3DMatrix& aTextureTransform, const Rect& aTexCoordRect, TextureSource *aTexture) { // Given what we know about these textures and coordinates, we can // compute fmod(t, 1.0f) to get the same texture coordinate out. If // the texCoordRect dimension is < 0 or > width/height, then we have // wraparound that we need to deal with by drawing multiple quads, // because we can't rely on full non-power-of-two texture support // (which is required for the REPEAT wrap mode). RectTriangles rects; GLenum wrapMode = aTexture->AsSourceOGL()->GetWrapMode(); IntSize realTexSize = aTexture->GetSize(); if (!CanUploadNonPowerOfTwo(mGLContext)) { realTexSize = IntSize(NextPowerOfTwo(realTexSize.width), NextPowerOfTwo(realTexSize.height)); } // We need to convert back to actual texels here to get proper behaviour with // our GL helper functions. Should fix this sometime. // I want to vomit. IntRect texCoordRect = IntRect(NS_roundf(aTexCoordRect.x * aTexture->GetSize().width), NS_roundf(aTexCoordRect.y * aTexture->GetSize().height), NS_roundf(aTexCoordRect.width * aTexture->GetSize().width), NS_roundf(aTexCoordRect.height * aTexture->GetSize().height)); // This is fairly disgusting - if the texture should be flipped it will have a // negative height, in which case we un-invert the texture coords and pass the // flipped 'flag' to the functions below. We can't just use the inverted coords // because our GL funtions use an explicit flag. bool flipped = false; if (texCoordRect.height < 0) { flipped = true; texCoordRect.y = texCoordRect.YMost(); texCoordRect.height = -texCoordRect.height; } if (wrapMode == LOCAL_GL_REPEAT) { rects.addRect(/* dest rectangle */ 0.0f, 0.0f, 1.0f, 1.0f, /* tex coords */ texCoordRect.x / GLfloat(realTexSize.width), texCoordRect.y / GLfloat(realTexSize.height), texCoordRect.XMost() / GLfloat(realTexSize.width), texCoordRect.YMost() / GLfloat(realTexSize.height), flipped); } else { nsIntRect tcRect(texCoordRect.x, texCoordRect.y, texCoordRect.width, texCoordRect.height); DecomposeIntoNoRepeatTriangles(tcRect, nsIntSize(realTexSize.width, realTexSize.height), rects, flipped); } gfx3DMatrix textureTransform; if (rects.IsSimpleQuad(textureTransform)) { Matrix4x4 transform; ToMatrix4x4(aTextureTransform * textureTransform, transform); aProg->SetTextureTransform(transform); BindAndDrawQuad(aProg, false); } else { Matrix4x4 transform; ToMatrix4x4(aTextureTransform, transform); aProg->SetTextureTransform(transform); DrawQuads(mGLContext, mVBOs, aProg, rects); } } void CompositorOGL::PrepareViewport(const gfx::IntSize& aSize, const Matrix& aWorldTransform) { // Set the viewport correctly. mGLContext->fViewport(0, 0, aSize.width, aSize.height); mHeight = aSize.height; // We flip the view matrix around so that everything is right-side up; we're // drawing directly into the window's back buffer, so this keeps things // looking correct. // XXX: We keep track of whether the window size changed, so we could skip // this update if it hadn't changed since the last call. We will need to // track changes to aTransformPolicy and aWorldTransform for this to work // though. // Matrix to transform (0, 0, aWidth, aHeight) to viewport space (-1.0, 1.0, // 2, 2) and flip the contents. Matrix viewMatrix; viewMatrix.Translate(-1.0, 1.0); viewMatrix.Scale(2.0f / float(aSize.width), 2.0f / float(aSize.height)); viewMatrix.Scale(1.0f, -1.0f); if (!mTarget) { viewMatrix.Translate(mRenderOffset.x, mRenderOffset.y); } viewMatrix = aWorldTransform * viewMatrix; Matrix4x4 matrix3d = Matrix4x4::From2D(viewMatrix); matrix3d._33 = 0.0f; SetLayerProgramProjectionMatrix(matrix3d); } void CompositorOGL::SetLayerProgramProjectionMatrix(const Matrix4x4& aMatrix) { // Update the projection matrix in all of the programs, without activating them. // The uniform will actually be set the next time the program is activated. for (unsigned int i = 0; i < mPrograms.Length(); ++i) { for (uint32_t mask = MaskNone; mask < NumMaskTypes; ++mask) { if (mPrograms[i].mVariations[mask]) { mPrograms[i].mVariations[mask]->DelayedSetProjectionMatrix(aMatrix); } } } } TemporaryRef CompositorOGL::CreateRenderTarget(const IntRect &aRect, SurfaceInitMode aInit) { GLuint tex = 0; GLuint fbo = 0; CreateFBOWithTexture(aRect, false, 0, &fbo, &tex); RefPtr surface = new CompositingRenderTargetOGL(this, aRect.TopLeft(), tex, fbo); surface->Initialize(aRect.Size(), mFBOTextureTarget, aInit); return surface.forget(); } TemporaryRef CompositorOGL::CreateRenderTargetFromSource(const IntRect &aRect, const CompositingRenderTarget *aSource, const IntPoint &aSourcePoint) { GLuint tex = 0; GLuint fbo = 0; const CompositingRenderTargetOGL* sourceSurface = static_cast(aSource); IntRect sourceRect(aSourcePoint, aRect.Size()); if (aSource) { CreateFBOWithTexture(sourceRect, true, sourceSurface->GetFBO(), &fbo, &tex); } else { CreateFBOWithTexture(sourceRect, true, 0, &fbo, &tex); } RefPtr surface = new CompositingRenderTargetOGL(this, aRect.TopLeft(), tex, fbo); surface->Initialize(aRect.Size(), mFBOTextureTarget, INIT_MODE_NONE); return surface.forget(); } void CompositorOGL::SetRenderTarget(CompositingRenderTarget *aSurface) { MOZ_ASSERT(aSurface); CompositingRenderTargetOGL* surface = static_cast(aSurface); if (mCurrentRenderTarget != surface) { surface->BindRenderTarget(); mCurrentRenderTarget = surface; } } CompositingRenderTarget* CompositorOGL::GetCurrentRenderTarget() { return mCurrentRenderTarget; } static GLenum GetFrameBufferInternalFormat(GLContext* gl, GLuint aFrameBuffer, nsIWidget* aWidget) { if (aFrameBuffer == 0) { // default framebuffer return aWidget->GetGLFrameBufferFormat(); } return LOCAL_GL_RGBA; } /* * Returns a size that is larger than and closest to aSize where both * width and height are powers of two. * If the OpenGL setup is capable of using non-POT textures, then it * will just return aSize. */ static IntSize CalculatePOTSize(const IntSize& aSize, GLContext* gl) { if (CanUploadNonPowerOfTwo(gl)) return aSize; return IntSize(NextPowerOfTwo(aSize.width), NextPowerOfTwo(aSize.height)); } void CompositorOGL::clearFBRect(const gfx::Rect* aRect) { if (!aRect) { return; } ScopedScissorRect autoScissorRect(mGLContext, aRect->x, aRect->y, aRect->width, aRect->height); mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0); mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT); } void CompositorOGL::BeginFrame(const nsIntRegion& aInvalidRegion, const Rect *aClipRectIn, const gfx::Matrix& aTransform, const Rect& aRenderBounds, Rect *aClipRectOut, Rect *aRenderBoundsOut) { PROFILER_LABEL("CompositorOGL", "BeginFrame"); MOZ_ASSERT(!mFrameInProgress, "frame still in progress (should have called EndFrame or AbortFrame"); LayerScope::BeginFrame(mGLContext, PR_Now()); mVBOs.Reset(); mFrameInProgress = true; gfx::Rect rect; if (mUseExternalSurfaceSize) { rect = gfx::Rect(0, 0, mSurfaceSize.width, mSurfaceSize.height); } else { rect = gfx::Rect(aRenderBounds.x, aRenderBounds.y, aRenderBounds.width, aRenderBounds.height); // If render bounds is not updated explicitly, try to infer it from widget if (rect.width == 0 || rect.height == 0) { // FIXME/bug XXXXXX this races with rotation changes on the main // thread, and undoes all the care we take with layers txns being // sent atomically with rotation changes nsIntRect intRect; mWidget->GetClientBounds(intRect); rect = gfx::Rect(0, 0, intRect.width, intRect.height); } } rect = aTransform.TransformBounds(rect); if (aRenderBoundsOut) { *aRenderBoundsOut = rect; } GLint width = rect.width; GLint height = rect.height; // We can't draw anything to something with no area // so just return if (width == 0 || height == 0) return; // If the widget size changed, we have to force a MakeCurrent // to make sure that GL sees the updated widget size. if (mWidgetSize.width != width || mWidgetSize.height != height) { MakeCurrent(ForceMakeCurrent); mWidgetSize.width = width; mWidgetSize.height = height; } else { MakeCurrent(); } mPixelsPerFrame = width * height; mPixelsFilled = 0; #if MOZ_ANDROID_OMTC TexturePoolOGL::Fill(gl()); #endif mCurrentRenderTarget = CompositingRenderTargetOGL::RenderTargetForWindow(this, IntSize(width, height), aTransform); mCurrentRenderTarget->BindRenderTarget(); #ifdef DEBUG mWindowRenderTarget = mCurrentRenderTarget; #endif // Default blend function implements "OVER" mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA, LOCAL_GL_ONE, LOCAL_GL_ONE); mGLContext->fEnable(LOCAL_GL_BLEND); if (aClipRectOut && !aClipRectIn) { aClipRectOut->SetRect(0, 0, width, height); } // If the Android compositor is being used, this clear will be done in // DrawWindowUnderlay. Make sure the bits used here match up with those used // in mobile/android/base/gfx/LayerRenderer.java #ifndef MOZ_ANDROID_OMTC mGLContext->fClearColor(0.0, 0.0, 0.0, 0.0); mGLContext->fClear(LOCAL_GL_COLOR_BUFFER_BIT | LOCAL_GL_DEPTH_BUFFER_BIT); #endif } void CompositorOGL::CreateFBOWithTexture(const IntRect& aRect, bool aCopyFromSource, GLuint aSourceFrameBuffer, GLuint *aFBO, GLuint *aTexture) { GLuint tex, fbo; mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0); mGLContext->fGenTextures(1, &tex); mGLContext->fBindTexture(mFBOTextureTarget, tex); if (aCopyFromSource) { GLuint curFBO = mCurrentRenderTarget->GetFBO(); if (curFBO != aSourceFrameBuffer) { mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, aSourceFrameBuffer); } // We're going to create an RGBA temporary fbo. But to // CopyTexImage() from the current framebuffer, the framebuffer's // format has to be compatible with the new texture's. So we // check the format of the framebuffer here and take a slow path // if it's incompatible. GLenum format = GetFrameBufferInternalFormat(gl(), aSourceFrameBuffer, mWidget); bool isFormatCompatibleWithRGBA = gl()->IsGLES2() ? (format == LOCAL_GL_RGBA) : true; if (isFormatCompatibleWithRGBA) { mGLContext->fCopyTexImage2D(mFBOTextureTarget, 0, LOCAL_GL_RGBA, aRect.x, FlipY(aRect.y + aRect.height), aRect.width, aRect.height, 0); } else { // Curses, incompatible formats. Take a slow path. // RGBA size_t bufferSize = aRect.width * aRect.height * 4; nsAutoArrayPtr buf(new uint8_t[bufferSize]); mGLContext->fReadPixels(aRect.x, aRect.y, aRect.width, aRect.height, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, buf); mGLContext->fTexImage2D(mFBOTextureTarget, 0, LOCAL_GL_RGBA, aRect.width, aRect.height, 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, buf); } GLenum error = mGLContext->GetAndClearError(); if (error != LOCAL_GL_NO_ERROR) { nsAutoCString msg; msg.AppendPrintf("Texture initialization failed! -- error 0x%x, Source %d, Source format %d, RGBA Compat %d", error, aSourceFrameBuffer, format, isFormatCompatibleWithRGBA); NS_ERROR(msg.get()); } } else { mGLContext->fTexImage2D(mFBOTextureTarget, 0, LOCAL_GL_RGBA, aRect.width, aRect.height, 0, LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_BYTE, nullptr); } mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR); mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR); mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE); mGLContext->fTexParameteri(mFBOTextureTarget, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE); mGLContext->fBindTexture(mFBOTextureTarget, 0); mGLContext->fGenFramebuffers(1, &fbo); *aFBO = fbo; *aTexture = tex; } ShaderProgramType CompositorOGL::GetProgramTypeForEffect(Effect *aEffect) const { switch(aEffect->mType) { case EFFECT_SOLID_COLOR: return ColorLayerProgramType; case EFFECT_RGBA: case EFFECT_RGBX: case EFFECT_BGRA: case EFFECT_BGRX: { TexturedEffect* texturedEffect = static_cast(aEffect); TextureSourceOGL* source = texturedEffect->mTexture->AsSourceOGL(); return ShaderProgramFromTargetAndFormat(source->GetTextureTarget(), source->GetFormat()); } case EFFECT_YCBCR: return YCbCrLayerProgramType; case EFFECT_RENDER_TARGET: return GetFBOLayerProgramType(); default: return RGBALayerProgramType; } } struct MOZ_STACK_CLASS AutoBindTexture : public ScopedGLWrapper { friend struct ScopedGLWrapper; protected: GLenum mTexUnit; GLuint mOldTexId; public: explicit AutoBindTexture(GLContext* aGL) : ScopedGLWrapper(aGL) , mTexUnit(0) , mOldTexId(GLuint(-1)) { } AutoBindTexture(GLContext* aGL, TextureSourceOGL* aTexture, GLenum aTexUnit = LOCAL_GL_TEXTURE0) : ScopedGLWrapper(aGL) , mTexUnit(0) , mOldTexId(GLuint(-1)) { MOZ_ASSERT(aTexture); MOZ_ASSERT(mOldTexId == GLuint(-1)); mTexUnit = aTexUnit; ScopedBindTextureUnit autoBindTexUnit(mGL, aTexUnit); mGL->GetUIntegerv(LOCAL_GL_TEXTURE_BINDING_2D, &mOldTexId); aTexture->BindTexture(mTexUnit); } protected: void UnwrapImpl() { if (mOldTexId == GLuint(-1)) return; ScopedBindTextureUnit autoBindTexUnit(mGL, mTexUnit); mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mOldTexId); } }; struct MOZ_STACK_CLASS AutoSaveTexture : public ScopedGLWrapper { friend struct ScopedGLWrapper; protected: GLenum mTexUnit; GLuint mOldTexId; public: AutoSaveTexture(GLContext* aGL, GLenum aTexUnit = LOCAL_GL_TEXTURE0) : ScopedGLWrapper(aGL) , mTexUnit(aTexUnit) , mOldTexId(GLuint(-1)) { ScopedBindTextureUnit savedTexUnit(mGL, mTexUnit); mGL->GetUIntegerv(LOCAL_GL_TEXTURE_BINDING_2D, &mOldTexId); } protected: void UnwrapImpl() { ScopedBindTextureUnit savedTexUnit(mGL, mTexUnit); mGL->fBindTexture(LOCAL_GL_TEXTURE_2D, mOldTexId); } }; void CompositorOGL::DrawLines(const std::vector& aLines, const gfx::Rect& aClipRect, const gfx::Color& aColor, gfx::Float aOpacity, const gfx::Matrix4x4 &aTransform) { mGLContext->fLineWidth(2.0); EffectChain effects; effects.mPrimaryEffect = new EffectSolidColor(aColor); for (int32_t i = 0; i < (int32_t)aLines.size() - 1; i++) { const gfx::Point& p1 = aLines[i]; const gfx::Point& p2 = aLines[i+1]; DrawQuadInternal(Rect(p1.x, p2.y, p2.x - p1.x, p1.y - p2.y), aClipRect, effects, aOpacity, aTransform, LOCAL_GL_LINE_STRIP); } } /** * Applies aFilter to the texture currently bound to aTarget. */ void ApplyFilterToBoundTexture(GLContext* aGL, GraphicsFilter aFilter, GLuint aTarget = LOCAL_GL_TEXTURE_2D) { GLenum filter = (aFilter == GraphicsFilter::FILTER_NEAREST ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR); aGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_MIN_FILTER, filter); aGL->fTexParameteri(aTarget, LOCAL_GL_TEXTURE_MAG_FILTER, filter); } void CompositorOGL::DrawQuadInternal(const Rect& aRect, const Rect& aClipRect, const EffectChain &aEffectChain, Float aOpacity, const gfx::Matrix4x4 &aTransform, GLuint aDrawMode) { PROFILER_LABEL("CompositorOGL", "DrawQuad"); MOZ_ASSERT(mFrameInProgress, "frame not started"); Rect clipRect = aClipRect; if (!mTarget) { clipRect.MoveBy(mRenderOffset.x, mRenderOffset.y); } IntRect intClipRect; clipRect.ToIntRect(&intClipRect); ScopedGLState scopedScissorTestState(mGLContext, LOCAL_GL_SCISSOR_TEST, true); ScopedScissorRect autoScissor(mGLContext, intClipRect.x, FlipY(intClipRect.y + intClipRect.height), intClipRect.width, intClipRect.height); LayerScope::SendEffectChain(mGLContext, aEffectChain, aRect.width, aRect.height); MaskType maskType; EffectMask* effectMask; TextureSourceOGL* sourceMask = nullptr; gfx::Matrix4x4 maskQuadTransform; if (aEffectChain.mSecondaryEffects[EFFECT_MASK]) { effectMask = static_cast(aEffectChain.mSecondaryEffects[EFFECT_MASK].get()); sourceMask = effectMask->mMaskTexture->AsSourceOGL(); // NS_ASSERTION(textureMask->IsAlpha(), // "OpenGL mask layers must be backed by alpha surfaces"); // We're assuming that the gl backend won't cheat and use NPOT // textures when glContext says it can't (which seems to happen // on a mac when you force POT textures) IntSize maskSize = CalculatePOTSize(effectMask->mSize, mGLContext); const gfx::Matrix4x4& maskTransform = effectMask->mMaskTransform; NS_ASSERTION(maskTransform.Is2D(), "How did we end up with a 3D transform here?!"); Rect bounds = Rect(Point(), Size(maskSize)); bounds = maskTransform.As2D().TransformBounds(bounds); maskQuadTransform._11 = 1.0f/bounds.width; maskQuadTransform._22 = 1.0f/bounds.height; maskQuadTransform._41 = float(-bounds.x)/bounds.width; maskQuadTransform._42 = float(-bounds.y)/bounds.height; maskType = effectMask->mIs3D ? Mask3d : Mask2d; } else { maskType = MaskNone; } mPixelsFilled += aRect.width * aRect.height; ShaderProgramType programType = GetProgramTypeForEffect(aEffectChain.mPrimaryEffect); ShaderProgramOGL *program = GetProgram(programType, maskType); program->Activate(); if (programType == RGBARectLayerProgramType || programType == RGBXRectLayerProgramType) { TexturedEffect* texturedEffect = static_cast(aEffectChain.mPrimaryEffect.get()); TextureSourceOGL* source = texturedEffect->mTexture->AsSourceOGL(); // This is used by IOSurface that use 0,0...w,h coordinate rather then 0,0..1,1. program->SetTexCoordMultiplier(source->GetSize().width, source->GetSize().height); } program->SetLayerQuadRect(aRect); program->SetLayerTransform(aTransform); IntPoint offset = mCurrentRenderTarget->GetOrigin(); program->SetRenderOffset(offset.x, offset.y); switch (aEffectChain.mPrimaryEffect->mType) { case EFFECT_SOLID_COLOR: { EffectSolidColor* effectSolidColor = static_cast(aEffectChain.mPrimaryEffect.get()); Color color = effectSolidColor->mColor; /* Multiply color by the layer opacity, as the shader * ignores layer opacity and expects a final color to * write to the color buffer. This saves a needless * multiply in the fragment shader. */ Float opacity = aOpacity * color.a; color.r *= opacity; color.g *= opacity; color.b *= opacity; color.a = opacity; program->SetRenderColor(color); AutoSaveTexture bindMask(mGLContext, LOCAL_GL_TEXTURE0); if (maskType != MaskNone) { BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE0, maskQuadTransform); } BindAndDrawQuad(program, false, aDrawMode); } break; case EFFECT_BGRA: case EFFECT_BGRX: case EFFECT_RGBA: case EFFECT_RGBX: { TexturedEffect* texturedEffect = static_cast(aEffectChain.mPrimaryEffect.get()); Rect textureCoords; TextureSource *source = texturedEffect->mTexture; if (!texturedEffect->mPremultiplied) { mGLContext->fBlendFuncSeparate(LOCAL_GL_SRC_ALPHA, LOCAL_GL_ONE_MINUS_SRC_ALPHA, LOCAL_GL_ONE, LOCAL_GL_ONE); } AutoBindTexture bindSource(mGLContext, source->AsSourceOGL(), LOCAL_GL_TEXTURE0); GraphicsFilter filter = ThebesFilter(texturedEffect->mFilter); gfx3DMatrix textureTransform; gfx::To3DMatrix(source->AsSourceOGL()->GetTextureTransform(), textureTransform); #ifdef MOZ_WIDGET_ANDROID gfxMatrix textureTransform2D; if (filter != GraphicsFilter::FILTER_NEAREST && aTransform.Is2DIntegerTranslation() && textureTransform.Is2D(&textureTransform2D) && textureTransform2D.HasOnlyIntegerTranslation()) { // On Android we encounter small resampling errors in what should be // pixel-aligned compositing operations. This works around them. This // code should not be needed! filter = GraphicsFilter::FILTER_NEAREST; } #endif ApplyFilterToBoundTexture(mGLContext, filter, source->AsSourceOGL()->GetTextureTarget()); program->SetTextureUnit(0); program->SetLayerOpacity(aOpacity); AutoSaveTexture bindMask(mGLContext, LOCAL_GL_TEXTURE1); if (maskType != MaskNone) { BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE1, maskQuadTransform); } BindAndDrawQuadWithTextureRect(program, textureTransform, texturedEffect->mTextureCoords, source); if (!texturedEffect->mPremultiplied) { mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA, LOCAL_GL_ONE, LOCAL_GL_ONE); } } break; case EFFECT_YCBCR: { EffectYCbCr* effectYCbCr = static_cast(aEffectChain.mPrimaryEffect.get()); TextureSource* sourceYCbCr = effectYCbCr->mTexture; const int Y = 0, Cb = 1, Cr = 2; TextureSourceOGL* sourceY = sourceYCbCr->GetSubSource(Y)->AsSourceOGL(); TextureSourceOGL* sourceCb = sourceYCbCr->GetSubSource(Cb)->AsSourceOGL(); TextureSourceOGL* sourceCr = sourceYCbCr->GetSubSource(Cr)->AsSourceOGL(); if (!sourceY && !sourceCb && !sourceCr) { NS_WARNING("Invalid layer texture."); return; } GraphicsFilter filter = ThebesFilter(effectYCbCr->mFilter); AutoBindTexture bindY(mGLContext, sourceY, LOCAL_GL_TEXTURE0); ApplyFilterToBoundTexture(mGLContext, filter); AutoBindTexture bindCb(mGLContext, sourceCb, LOCAL_GL_TEXTURE1); ApplyFilterToBoundTexture(mGLContext, filter); AutoBindTexture bindCr(mGLContext, sourceCr, LOCAL_GL_TEXTURE2); ApplyFilterToBoundTexture(mGLContext, filter); program->SetYCbCrTextureUnits(Y, Cb, Cr); program->SetLayerOpacity(aOpacity); AutoSaveTexture bindMask(mGLContext, LOCAL_GL_TEXTURE3); if (maskType != MaskNone) { BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE3, maskQuadTransform); } BindAndDrawQuadWithTextureRect(program, gfx3DMatrix(), effectYCbCr->mTextureCoords, sourceYCbCr->GetSubSource(Y)); } break; case EFFECT_RENDER_TARGET: { EffectRenderTarget* effectRenderTarget = static_cast(aEffectChain.mPrimaryEffect.get()); RefPtr surface = static_cast(effectRenderTarget->mRenderTarget.get()); ShaderProgramOGL *program = GetProgram(GetFBOLayerProgramType(), maskType); surface->BindTexture(LOCAL_GL_TEXTURE0, mFBOTextureTarget); program->Activate(); program->SetTextureUnit(0); program->SetLayerOpacity(aOpacity); program->SetTextureTransform(Matrix4x4()); AutoSaveTexture bindMask(mGLContext, LOCAL_GL_TEXTURE1); if (maskType != MaskNone) { sourceMask->BindTexture(LOCAL_GL_TEXTURE1); program->SetMaskTextureUnit(1); program->SetMaskLayerTransform(maskQuadTransform); } if (program->GetTexCoordMultiplierUniformLocation() != -1) { // 2DRect case, get the multiplier right for a sampler2DRect program->SetTexCoordMultiplier(aRect.width, aRect.height); } // Drawing is always flipped, but when copying between surfaces we want to avoid // this. Pass true for the flip parameter to introduce a second flip // that cancels the other one out. BindAndDrawQuad(program, true); } break; case EFFECT_COMPONENT_ALPHA: { MOZ_ASSERT(gfxPlatform::ComponentAlphaEnabled()); EffectComponentAlpha* effectComponentAlpha = static_cast(aEffectChain.mPrimaryEffect.get()); TextureSourceOGL* sourceOnWhite = effectComponentAlpha->mOnWhite->AsSourceOGL(); TextureSourceOGL* sourceOnBlack = effectComponentAlpha->mOnBlack->AsSourceOGL(); if (!sourceOnBlack->IsValid() || !sourceOnWhite->IsValid()) { NS_WARNING("Invalid layer texture for component alpha"); return; } for (int32_t pass = 1; pass <=2; ++pass) { ShaderProgramOGL* program; if (pass == 1) { ShaderProgramType type = gl()->GetPreferredARGB32Format() == LOCAL_GL_BGRA ? ComponentAlphaPass1RGBProgramType : ComponentAlphaPass1ProgramType; program = GetProgram(type, maskType); gl()->fBlendFuncSeparate(LOCAL_GL_ZERO, LOCAL_GL_ONE_MINUS_SRC_COLOR, LOCAL_GL_ONE, LOCAL_GL_ONE); } else { ShaderProgramType type = gl()->GetPreferredARGB32Format() == LOCAL_GL_BGRA ? ComponentAlphaPass2RGBProgramType : ComponentAlphaPass2ProgramType; program = GetProgram(type, maskType); gl()->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE, LOCAL_GL_ONE, LOCAL_GL_ONE); } AutoBindTexture bindSourceOnBlack(mGLContext, sourceOnBlack, LOCAL_GL_TEXTURE0); AutoBindTexture bindSourceOnWhite(mGLContext, sourceOnWhite, LOCAL_GL_TEXTURE1); program->Activate(); program->SetBlackTextureUnit(0); program->SetWhiteTextureUnit(1); program->SetLayerOpacity(aOpacity); program->SetLayerTransform(aTransform); program->SetRenderOffset(offset.x, offset.y); program->SetLayerQuadRect(aRect); AutoSaveTexture bindMask(mGLContext, LOCAL_GL_TEXTURE2); if (maskType != MaskNone) { BindMaskForProgram(program, sourceMask, LOCAL_GL_TEXTURE2, maskQuadTransform); } BindAndDrawQuadWithTextureRect(program, gfx3DMatrix(), effectComponentAlpha->mTextureCoords, effectComponentAlpha->mOnBlack); mGLContext->fBlendFuncSeparate(LOCAL_GL_ONE, LOCAL_GL_ONE_MINUS_SRC_ALPHA, LOCAL_GL_ONE, LOCAL_GL_ONE); } } break; default: MOZ_ASSERT(false, "Unhandled effect type"); break; } mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0); // in case rendering has used some other GL context MakeCurrent(); } void CompositorOGL::EndFrame() { PROFILER_LABEL("CompositorOGL", "EndFrame"); MOZ_ASSERT(mCurrentRenderTarget == mWindowRenderTarget, "Rendering target not properly restored"); #ifdef MOZ_DUMP_PAINTING if (gfxUtils::sDumpPainting) { nsIntRect rect; if (mUseExternalSurfaceSize) { rect = nsIntRect(0, 0, mSurfaceSize.width, mSurfaceSize.height); } else { mWidget->GetBounds(rect); } RefPtr target = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(IntSize(rect.width, rect.height), SurfaceFormat::B8G8R8A8); CopyToTarget(target, mCurrentRenderTarget->GetTransform()); WriteSnapshotToDumpFile(this, target); } #endif mFrameInProgress = false; LayerScope::EndFrame(mGLContext); if (mTarget) { CopyToTarget(mTarget, mCurrentRenderTarget->GetTransform()); mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); mCurrentRenderTarget = nullptr; return; } mCurrentRenderTarget = nullptr; mGLContext->SwapBuffers(); mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); } void CompositorOGL::EndFrameForExternalComposition(const gfx::Matrix& aTransform) { // This lets us reftest and screenshot content rendered externally if (mTarget) { MakeCurrent(); CopyToTarget(mTarget, aTransform); mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); } } void CompositorOGL::AbortFrame() { mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, 0); mFrameInProgress = false; mCurrentRenderTarget = nullptr; } void CompositorOGL::SetDestinationSurfaceSize(const gfx::IntSize& aSize) { mSurfaceSize.width = aSize.width; mSurfaceSize.height = aSize.height; } void CompositorOGL::CopyToTarget(DrawTarget *aTarget, const gfx::Matrix& aTransform) { IntRect rect; if (mUseExternalSurfaceSize) { rect = IntRect(0, 0, mSurfaceSize.width, mSurfaceSize.height); } else { rect = IntRect(0, 0, mWidgetSize.width, mWidgetSize.height); } GLint width = rect.width; GLint height = rect.height; if ((int64_t(width) * int64_t(height) * int64_t(4)) > INT32_MAX) { NS_ERROR("Widget size too big - integer overflow!"); return; } mGLContext->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0); if (!mGLContext->IsGLES2()) { // GLES2 promises that binding to any custom FBO will attach // to GL_COLOR_ATTACHMENT0 attachment point. mGLContext->fReadBuffer(LOCAL_GL_BACK); } RefPtr source = Factory::CreateDataSourceSurface(rect.Size(), gfx::SurfaceFormat::B8G8R8A8); DataSourceSurface::MappedSurface map; source->Map(DataSourceSurface::MapType::WRITE, &map); // XXX we should do this properly one day without using the gfxImageSurface nsRefPtr surf = new gfxImageSurface(map.mData, gfxIntSize(width, height), map.mStride, gfxImageFormat::ARGB32); ReadPixelsIntoImageSurface(mGLContext, surf); source->Unmap(); // Map from GL space to Cairo space and reverse the world transform. Matrix glToCairoTransform = aTransform; glToCairoTransform.Invert(); glToCairoTransform.Scale(1.0, -1.0); glToCairoTransform.Translate(0.0, -height); Matrix oldMatrix = aTarget->GetTransform(); aTarget->SetTransform(glToCairoTransform); Rect floatRect = Rect(rect.x, rect.y, rect.width, rect.height); aTarget->DrawSurface(source, floatRect, floatRect, DrawSurfaceOptions(), DrawOptions(1.0f, CompositionOp::OP_SOURCE)); aTarget->SetTransform(oldMatrix); aTarget->Flush(); } void CompositorOGL::Pause() { #ifdef MOZ_WIDGET_ANDROID if (!gl() || gl()->IsDestroyed()) return; // ReleaseSurface internally calls MakeCurrent. gl()->ReleaseSurface(); #endif } bool CompositorOGL::Resume() { #ifdef MOZ_WIDGET_ANDROID if (!gl() || gl()->IsDestroyed()) return false; // RenewSurface internally calls MakeCurrent. return gl()->RenewSurface(); #endif return true; } TemporaryRef CompositorOGL::CreateDataTextureSource(TextureFlags aFlags) { RefPtr result = new TextureImageTextureSourceOGL(mGLContext, aFlags); return result; } bool CompositorOGL::SupportsPartialTextureUpdate() { return CanUploadSubTextures(mGLContext); } int32_t CompositorOGL::GetMaxTextureSize() const { MOZ_ASSERT(mGLContext); GLint texSize = 0; mGLContext->fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &texSize); MOZ_ASSERT(texSize != 0); return texSize; } void CompositorOGL::MakeCurrent(MakeCurrentFlags aFlags) { if (mDestroyed) { NS_WARNING("Call on destroyed layer manager"); return; } mGLContext->MakeCurrent(aFlags & ForceMakeCurrent); } void CompositorOGL::BindQuadVBO() { mGLContext->fBindBuffer(LOCAL_GL_ARRAY_BUFFER, mQuadVBO); } void CompositorOGL::QuadVBOVerticesAttrib(GLuint aAttribIndex) { mGLContext->fVertexAttribPointer(aAttribIndex, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, (GLvoid*) QuadVBOVertexOffset()); } void CompositorOGL::QuadVBOTexCoordsAttrib(GLuint aAttribIndex) { mGLContext->fVertexAttribPointer(aAttribIndex, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, (GLvoid*) QuadVBOTexCoordOffset()); } void CompositorOGL::QuadVBOFlippedTexCoordsAttrib(GLuint aAttribIndex) { mGLContext->fVertexAttribPointer(aAttribIndex, 2, LOCAL_GL_FLOAT, LOCAL_GL_FALSE, 0, (GLvoid*) QuadVBOFlippedTexCoordOffset()); } void CompositorOGL::BindAndDrawQuad(GLuint aVertAttribIndex, GLuint aTexCoordAttribIndex, bool aFlipped, GLuint aDrawMode) { BindQuadVBO(); QuadVBOVerticesAttrib(aVertAttribIndex); if (aTexCoordAttribIndex != GLuint(-1)) { if (aFlipped) QuadVBOFlippedTexCoordsAttrib(aTexCoordAttribIndex); else QuadVBOTexCoordsAttrib(aTexCoordAttribIndex); mGLContext->fEnableVertexAttribArray(aTexCoordAttribIndex); } mGLContext->fEnableVertexAttribArray(aVertAttribIndex); if (aDrawMode == LOCAL_GL_LINE_STRIP) { mGLContext->fDrawArrays(aDrawMode, 1, 2); } else { mGLContext->fDrawArrays(aDrawMode, 0, 4); } mGLContext->fDisableVertexAttribArray(aVertAttribIndex); if (aTexCoordAttribIndex != GLuint(-1)) { mGLContext->fDisableVertexAttribArray(aTexCoordAttribIndex); } } void CompositorOGL::BindAndDrawQuad(ShaderProgramOGL *aProg, bool aFlipped, GLuint aDrawMode) { NS_ASSERTION(aProg->HasInitialized(), "Shader program not correctly initialized"); BindAndDrawQuad(aProg->AttribLocation(ShaderProgramOGL::VertexCoordAttrib), aProg->AttribLocation(ShaderProgramOGL::TexCoordAttrib), aFlipped, aDrawMode); } } /* layers */ } /* mozilla */