1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/gl/SharedSurfaceGL.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,298 @@
1.4 +/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef SHARED_SURFACE_GL_H_
1.10 +#define SHARED_SURFACE_GL_H_
1.11 +
1.12 +#include "ScopedGLHelpers.h"
1.13 +#include "SharedSurface.h"
1.14 +#include "SurfaceFactory.h"
1.15 +#include "SurfaceTypes.h"
1.16 +#include "GLContextTypes.h"
1.17 +#include "nsAutoPtr.h"
1.18 +#include "gfxTypes.h"
1.19 +#include "mozilla/Mutex.h"
1.20 +
1.21 +#include <queue>
1.22 +
1.23 +// Forwards:
1.24 +namespace mozilla {
1.25 + namespace gl {
1.26 + class GLContext;
1.27 + }
1.28 + namespace gfx {
1.29 + class DataSourceSurface;
1.30 + }
1.31 +}
1.32 +
1.33 +namespace mozilla {
1.34 +namespace gl {
1.35 +
1.36 +class SurfaceFactory_GL;
1.37 +
1.38 +class SharedSurface_GL
1.39 + : public gfx::SharedSurface
1.40 +{
1.41 +protected:
1.42 + typedef class gfx::SharedSurface SharedSurface;
1.43 + typedef gfx::SharedSurfaceType SharedSurfaceType;
1.44 + typedef gfx::APITypeT APITypeT;
1.45 + typedef gfx::AttachmentType AttachmentType;
1.46 +
1.47 + GLContext* const mGL;
1.48 +
1.49 + SharedSurface_GL(SharedSurfaceType type,
1.50 + AttachmentType attachType,
1.51 + GLContext* gl,
1.52 + const gfx::IntSize& size,
1.53 + bool hasAlpha)
1.54 + : SharedSurface(type, APITypeT::OpenGL, attachType, size, hasAlpha)
1.55 + , mGL(gl)
1.56 + {}
1.57 +
1.58 +public:
1.59 + static void ProdCopy(SharedSurface_GL* src, SharedSurface_GL* dest,
1.60 + SurfaceFactory_GL* factory);
1.61 +
1.62 + static SharedSurface_GL* Cast(SharedSurface* surf) {
1.63 + MOZ_ASSERT(surf->APIType() == APITypeT::OpenGL);
1.64 +
1.65 + return (SharedSurface_GL*)surf;
1.66 + }
1.67 +
1.68 + // For use when AttachType is correct.
1.69 + virtual GLuint ProdTexture() {
1.70 + MOZ_ASSERT(AttachType() == AttachmentType::GLTexture);
1.71 + MOZ_CRASH("Did you forget to override this function?");
1.72 + }
1.73 +
1.74 + virtual GLenum ProdTextureTarget() const {
1.75 + return LOCAL_GL_TEXTURE_2D;
1.76 + }
1.77 +
1.78 + virtual GLuint ProdRenderbuffer() {
1.79 + MOZ_ASSERT(AttachType() == AttachmentType::GLRenderbuffer);
1.80 + MOZ_CRASH("Did you forget to override this function?");
1.81 + }
1.82 +
1.83 + virtual bool ReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
1.84 + GLenum format, GLenum type, GLvoid *pixels) {
1.85 + return false;
1.86 + }
1.87 +
1.88 + virtual void LockProd() MOZ_OVERRIDE;
1.89 + virtual void UnlockProd() MOZ_OVERRIDE;
1.90 +
1.91 + GLContext* GL() const {
1.92 + return mGL;
1.93 + }
1.94 +};
1.95 +
1.96 +class SurfaceFactory_GL
1.97 + : public gfx::SurfaceFactory
1.98 +{
1.99 +protected:
1.100 + typedef struct gfx::SurfaceCaps SurfaceCaps;
1.101 + typedef class gfx::SurfaceFactory SurfaceFactory;
1.102 + typedef class gfx::SharedSurface SharedSurface;
1.103 + typedef gfx::SharedSurfaceType SharedSurfaceType;
1.104 +
1.105 + GLContext* const mGL;
1.106 + const GLFormats mFormats;
1.107 +
1.108 + SurfaceCaps mDrawCaps;
1.109 + SurfaceCaps mReadCaps;
1.110 +
1.111 + // This uses ChooseBufferBits to pick drawBits/readBits.
1.112 + SurfaceFactory_GL(GLContext* gl,
1.113 + SharedSurfaceType type,
1.114 + const SurfaceCaps& caps);
1.115 +
1.116 + virtual void ChooseBufferBits(const SurfaceCaps& caps,
1.117 + SurfaceCaps& drawCaps,
1.118 + SurfaceCaps& readCaps) const;
1.119 +
1.120 +public:
1.121 + GLContext* GL() const {
1.122 + return mGL;
1.123 + }
1.124 +
1.125 + const GLFormats& Formats() const {
1.126 + return mFormats;
1.127 + }
1.128 +
1.129 + const SurfaceCaps& DrawCaps() const {
1.130 + return mDrawCaps;
1.131 + }
1.132 +
1.133 + const SurfaceCaps& ReadCaps() const {
1.134 + return mReadCaps;
1.135 + }
1.136 +};
1.137 +
1.138 +// For readback and bootstrapping:
1.139 +class SharedSurface_Basic
1.140 + : public SharedSurface_GL
1.141 +{
1.142 +public:
1.143 + static SharedSurface_Basic* Create(GLContext* gl,
1.144 + const GLFormats& formats,
1.145 + const gfx::IntSize& size,
1.146 + bool hasAlpha);
1.147 +
1.148 + static SharedSurface_Basic* Cast(SharedSurface* surf) {
1.149 + MOZ_ASSERT(surf->Type() == SharedSurfaceType::Basic);
1.150 +
1.151 + return (SharedSurface_Basic*)surf;
1.152 + }
1.153 +
1.154 +protected:
1.155 + const GLuint mTex;
1.156 + GLuint mFB;
1.157 +
1.158 + RefPtr<gfx::DataSourceSurface> mData;
1.159 +
1.160 + SharedSurface_Basic(GLContext* gl,
1.161 + const gfx::IntSize& size,
1.162 + bool hasAlpha,
1.163 + gfx::SurfaceFormat format,
1.164 + GLuint tex);
1.165 +
1.166 +public:
1.167 + virtual ~SharedSurface_Basic();
1.168 +
1.169 + virtual void LockProdImpl() MOZ_OVERRIDE {}
1.170 + virtual void UnlockProdImpl() MOZ_OVERRIDE {}
1.171 +
1.172 +
1.173 + virtual void Fence() MOZ_OVERRIDE;
1.174 +
1.175 + virtual bool WaitSync() MOZ_OVERRIDE {
1.176 + // Since we already store the data in Fence, we're always done already.
1.177 + return true;
1.178 + }
1.179 +
1.180 + virtual GLuint ProdTexture() MOZ_OVERRIDE {
1.181 + return mTex;
1.182 + }
1.183 +
1.184 + // Implementation-specific functions below:
1.185 + gfx::DataSourceSurface* GetData() {
1.186 + return mData;
1.187 + }
1.188 +};
1.189 +
1.190 +class SurfaceFactory_Basic
1.191 + : public SurfaceFactory_GL
1.192 +{
1.193 +public:
1.194 + SurfaceFactory_Basic(GLContext* gl, const SurfaceCaps& caps)
1.195 + : SurfaceFactory_GL(gl, SharedSurfaceType::Basic, caps)
1.196 + {}
1.197 +
1.198 + virtual SharedSurface* CreateShared(const gfx::IntSize& size) MOZ_OVERRIDE {
1.199 + bool hasAlpha = mReadCaps.alpha;
1.200 + return SharedSurface_Basic::Create(mGL, mFormats, size, hasAlpha);
1.201 + }
1.202 +};
1.203 +
1.204 +
1.205 +// Using shared GL textures:
1.206 +class SharedSurface_GLTexture
1.207 + : public SharedSurface_GL
1.208 +{
1.209 +public:
1.210 + static SharedSurface_GLTexture* Create(GLContext* prodGL,
1.211 + GLContext* consGL,
1.212 + const GLFormats& formats,
1.213 + const gfx::IntSize& size,
1.214 + bool hasAlpha,
1.215 + GLuint texture = 0);
1.216 +
1.217 + static SharedSurface_GLTexture* Cast(SharedSurface* surf) {
1.218 + MOZ_ASSERT(surf->Type() == SharedSurfaceType::GLTextureShare);
1.219 +
1.220 + return (SharedSurface_GLTexture*)surf;
1.221 + }
1.222 +
1.223 +protected:
1.224 + GLContext* mConsGL;
1.225 + const GLuint mTex;
1.226 + const bool mOwnsTex;
1.227 + GLsync mSync;
1.228 + mutable Mutex mMutex;
1.229 +
1.230 + SharedSurface_GLTexture(GLContext* prodGL,
1.231 + GLContext* consGL,
1.232 + const gfx::IntSize& size,
1.233 + bool hasAlpha,
1.234 + GLuint tex,
1.235 + bool ownsTex)
1.236 + : SharedSurface_GL(SharedSurfaceType::GLTextureShare,
1.237 + AttachmentType::GLTexture,
1.238 + prodGL,
1.239 + size,
1.240 + hasAlpha)
1.241 + , mConsGL(consGL)
1.242 + , mTex(tex)
1.243 + , mOwnsTex(ownsTex)
1.244 + , mSync(0)
1.245 + , mMutex("SharedSurface_GLTexture mutex")
1.246 + {
1.247 + }
1.248 +
1.249 +public:
1.250 + virtual ~SharedSurface_GLTexture();
1.251 +
1.252 + virtual void LockProdImpl() MOZ_OVERRIDE {}
1.253 + virtual void UnlockProdImpl() MOZ_OVERRIDE {}
1.254 +
1.255 +
1.256 + virtual void Fence() MOZ_OVERRIDE;
1.257 + virtual bool WaitSync() MOZ_OVERRIDE;
1.258 +
1.259 +
1.260 + virtual GLuint ProdTexture() MOZ_OVERRIDE {
1.261 + return mTex;
1.262 + }
1.263 +
1.264 + // Custom:
1.265 +
1.266 + GLuint ConsTexture(GLContext* consGL);
1.267 +
1.268 + GLenum ConsTextureTarget() const {
1.269 + return ProdTextureTarget();
1.270 + }
1.271 +};
1.272 +
1.273 +class SurfaceFactory_GLTexture
1.274 + : public SurfaceFactory_GL
1.275 +{
1.276 +protected:
1.277 + GLContext* const mConsGL;
1.278 +
1.279 +public:
1.280 + // If we don't know `consGL` at construction time, use `nullptr`, and call
1.281 + // `SetConsumerGL()` on each `SharedSurface_GLTexture` before calling its
1.282 + // `WaitSync()`.
1.283 + SurfaceFactory_GLTexture(GLContext* prodGL,
1.284 + GLContext* consGL,
1.285 + const SurfaceCaps& caps)
1.286 + : SurfaceFactory_GL(prodGL, SharedSurfaceType::GLTextureShare, caps)
1.287 + , mConsGL(consGL)
1.288 + {
1.289 + MOZ_ASSERT(consGL != prodGL);
1.290 + }
1.291 +
1.292 + virtual SharedSurface* CreateShared(const gfx::IntSize& size) MOZ_OVERRIDE {
1.293 + bool hasAlpha = mReadCaps.alpha;
1.294 + return SharedSurface_GLTexture::Create(mGL, mConsGL, mFormats, size, hasAlpha);
1.295 + }
1.296 +};
1.297 +
1.298 +} /* namespace gfx */
1.299 +} /* namespace mozilla */
1.300 +
1.301 +#endif /* SHARED_SURFACE_GL_H_ */
