| |
| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "SkOnce.h" |
| #include "gl/GrGLInterface.h" |
| #include "gl/GrGLAssembleInterface.h" |
| #include "gl/command_buffer/SkCommandBufferGLContext.h" |
| #include "../ports/SkOSLibrary.h" |
| |
| #if defined SK_BUILD_FOR_MAC |
| |
| // EGL doesn't exist on the mac, so expose what we need to get the command buffer's EGL running. |
| typedef void *EGLDisplay; |
| typedef unsigned int EGLBoolean; |
| typedef void *EGLConfig; |
| typedef void *EGLSurface; |
| typedef void *EGLContext; |
| typedef int32_t EGLint; |
| typedef void* EGLNativeDisplayType; |
| typedef void* EGLNativeWindowType; |
| typedef void (*__eglMustCastToProperFunctionPointerType)(void); |
| #define EGL_FALSE 0 |
| #define EGL_OPENGL_ES2_BIT 0x0004 |
| #define EGL_CONTEXT_CLIENT_VERSION 0x3098 |
| #define EGL_NO_SURFACE ((EGLSurface)0) |
| #define EGL_NO_DISPLAY ((EGLDisplay)0) |
| #define EGL_NO_CONTEXT ((EGLContext)0) |
| #define EGL_DEFAULT_DISPLAY ((EGLNativeDisplayType)0) |
| #define EGL_SURFACE_TYPE 0x3033 |
| #define EGL_PBUFFER_BIT 0x0001 |
| #define EGL_RENDERABLE_TYPE 0x3040 |
| #define EGL_RED_SIZE 0x3024 |
| #define EGL_GREEN_SIZE 0x3023 |
| #define EGL_BLUE_SIZE 0x3022 |
| #define EGL_ALPHA_SIZE 0x3021 |
| #define EGL_DEPTH_SIZE 0x3025 |
| #define EGL_STENCIL_SIZE 0x3025 |
| #define EGL_SAMPLES 0x3031 |
| #define EGL_SAMPLE_BUFFERS 0x3032 |
| #define EGL_NONE 0x3038 |
| #define EGL_WIDTH 0x3057 |
| #define EGL_HEIGHT 0x3056 |
| |
| #else |
| |
| #include <EGL/egl.h> |
| |
| #endif |
| |
| typedef EGLDisplay (*GetDisplayProc)(EGLNativeDisplayType display_id); |
| typedef EGLBoolean (*InitializeProc)(EGLDisplay dpy, EGLint *major, EGLint *minor); |
| typedef EGLBoolean (*TerminateProc)(EGLDisplay dpy); |
| typedef EGLBoolean (*ChooseConfigProc)(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs, EGLint config_size, EGLint* num_config); |
| typedef EGLBoolean (*GetConfigAttrib)(EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint* value); |
| typedef EGLSurface (*CreateWindowSurfaceProc)(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint* attrib_list); |
| typedef EGLSurface (*CreatePbufferSurfaceProc)(EGLDisplay dpy, EGLConfig config, const EGLint* attrib_list); |
| typedef EGLBoolean (*DestroySurfaceProc)(EGLDisplay dpy, EGLSurface surface); |
| typedef EGLContext (*CreateContextProc)(EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint* attrib_list); |
| typedef EGLBoolean (*DestroyContextProc)(EGLDisplay dpy, EGLContext ctx); |
| typedef EGLBoolean (*MakeCurrentProc)(EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx); |
| typedef EGLBoolean (*SwapBuffersProc)(EGLDisplay dpy, EGLSurface surface); |
| typedef __eglMustCastToProperFunctionPointerType (*GetProcAddressProc)(const char* procname); |
| |
| static GetDisplayProc gfGetDisplay = nullptr; |
| static InitializeProc gfInitialize = nullptr; |
| static TerminateProc gfTerminate = nullptr; |
| static ChooseConfigProc gfChooseConfig = nullptr; |
| static GetConfigAttrib gfGetConfigAttrib = nullptr; |
| static CreateWindowSurfaceProc gfCreateWindowSurface = nullptr; |
| static CreatePbufferSurfaceProc gfCreatePbufferSurface = nullptr; |
| static DestroySurfaceProc gfDestroySurface = nullptr; |
| static CreateContextProc gfCreateContext = nullptr; |
| static DestroyContextProc gfDestroyContext = nullptr; |
| static MakeCurrentProc gfMakeCurrent = nullptr; |
| static SwapBuffersProc gfSwapBuffers = nullptr; |
| static GetProcAddressProc gfGetProcAddress = nullptr; |
| |
| static void* gLibrary = nullptr; |
| static bool gfFunctionsLoadedSuccessfully = false; |
| |
| static void load_command_buffer_functions() { |
| if (!gLibrary) { |
| #if defined _WIN32 |
| gLibrary = DynamicLoadLibrary("command_buffer_gles2.dll"); |
| #elif defined SK_BUILD_FOR_MAC |
| gLibrary = DynamicLoadLibrary("libcommand_buffer_gles2.dylib"); |
| #else |
| gLibrary = DynamicLoadLibrary("libcommand_buffer_gles2.so"); |
| #endif // defined _WIN32 |
| if (gLibrary) { |
| gfGetDisplay = (GetDisplayProc)GetProcedureAddress(gLibrary, "eglGetDisplay"); |
| gfInitialize = (InitializeProc)GetProcedureAddress(gLibrary, "eglInitialize"); |
| gfTerminate = (TerminateProc)GetProcedureAddress(gLibrary, "eglTerminate"); |
| gfChooseConfig = (ChooseConfigProc)GetProcedureAddress(gLibrary, "eglChooseConfig"); |
| gfGetConfigAttrib = (GetConfigAttrib)GetProcedureAddress(gLibrary, "eglGetConfigAttrib"); |
| gfCreateWindowSurface = (CreateWindowSurfaceProc)GetProcedureAddress(gLibrary, "eglCreateWindowSurface"); |
| gfCreatePbufferSurface = (CreatePbufferSurfaceProc)GetProcedureAddress(gLibrary, "eglCreatePbufferSurface"); |
| gfDestroySurface = (DestroySurfaceProc)GetProcedureAddress(gLibrary, "eglDestroySurface"); |
| gfCreateContext = (CreateContextProc)GetProcedureAddress(gLibrary, "eglCreateContext"); |
| gfDestroyContext = (DestroyContextProc)GetProcedureAddress(gLibrary, "eglDestroyContext"); |
| gfMakeCurrent = (MakeCurrentProc)GetProcedureAddress(gLibrary, "eglMakeCurrent"); |
| gfSwapBuffers = (SwapBuffersProc)GetProcedureAddress(gLibrary, "eglSwapBuffers"); |
| gfGetProcAddress = (GetProcAddressProc)GetProcedureAddress(gLibrary, "eglGetProcAddress"); |
| |
| gfFunctionsLoadedSuccessfully = gfGetDisplay && gfInitialize && gfTerminate && |
| gfChooseConfig && gfCreateWindowSurface && |
| gfCreatePbufferSurface && gfDestroySurface && |
| gfCreateContext && gfDestroyContext && gfMakeCurrent && |
| gfSwapBuffers && gfGetProcAddress; |
| |
| } |
| } |
| } |
| |
| static GrGLFuncPtr command_buffer_get_gl_proc(void* ctx, const char name[]) { |
| if (!gfFunctionsLoadedSuccessfully) { |
| return nullptr; |
| } |
| return gfGetProcAddress(name); |
| } |
| |
| SK_DECLARE_STATIC_ONCE(loadCommandBufferOnce); |
| void LoadCommandBufferOnce() { |
| SkOnce(&loadCommandBufferOnce, load_command_buffer_functions); |
| } |
| |
| const GrGLInterface* GrGLCreateCommandBufferInterface() { |
| LoadCommandBufferOnce(); |
| if (!gfFunctionsLoadedSuccessfully) { |
| return nullptr; |
| } |
| return GrGLAssembleGLESInterface(gLibrary, command_buffer_get_gl_proc); |
| } |
| |
| SkCommandBufferGLContext::SkCommandBufferGLContext() |
| : fContext(EGL_NO_CONTEXT) |
| , fDisplay(EGL_NO_DISPLAY) |
| , fSurface(EGL_NO_SURFACE) { |
| |
| static const EGLint configAttribs[] = { |
| EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, |
| EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, |
| EGL_RED_SIZE, 8, |
| EGL_GREEN_SIZE, 8, |
| EGL_BLUE_SIZE, 8, |
| EGL_ALPHA_SIZE, 8, |
| EGL_NONE |
| }; |
| |
| static const EGLint surfaceAttribs[] = { |
| EGL_WIDTH, 1, |
| EGL_HEIGHT, 1, |
| EGL_NONE |
| }; |
| |
| initializeGLContext(nullptr, configAttribs, surfaceAttribs); |
| } |
| |
| SkCommandBufferGLContext::SkCommandBufferGLContext(void* nativeWindow, int msaaSampleCount) { |
| static const EGLint surfaceAttribs[] = { EGL_NONE }; |
| |
| EGLint configAttribs[] = { |
| EGL_RED_SIZE, 8, |
| EGL_GREEN_SIZE, 8, |
| EGL_BLUE_SIZE, 8, |
| EGL_ALPHA_SIZE, 8, |
| EGL_DEPTH_SIZE, 8, |
| EGL_STENCIL_SIZE, 8, |
| EGL_SAMPLE_BUFFERS, 1, |
| EGL_SAMPLES, msaaSampleCount, |
| EGL_NONE |
| }; |
| if (msaaSampleCount == 0) { |
| configAttribs[12] = EGL_NONE; |
| } |
| |
| initializeGLContext(nativeWindow, configAttribs, surfaceAttribs); |
| } |
| |
| void SkCommandBufferGLContext::initializeGLContext(void* nativeWindow, const int* configAttribs, |
| const int* surfaceAttribs) { |
| LoadCommandBufferOnce(); |
| if (!gfFunctionsLoadedSuccessfully) { |
| SkDebugf("Command Buffer: Could not load EGL functions.\n"); |
| return; |
| } |
| |
| fDisplay = gfGetDisplay(EGL_DEFAULT_DISPLAY); |
| if (EGL_NO_DISPLAY == fDisplay) { |
| SkDebugf("Command Buffer: Could not create EGL display.\n"); |
| return; |
| } |
| |
| EGLint majorVersion; |
| EGLint minorVersion; |
| if (!gfInitialize(fDisplay, &majorVersion, &minorVersion)) { |
| SkDebugf("Command Buffer: Could not initialize EGL display.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| EGLint numConfigs; |
| if (!gfChooseConfig(fDisplay, configAttribs, static_cast<EGLConfig*>(&fConfig), 1, |
| &numConfigs) || numConfigs != 1) { |
| SkDebugf("Command Buffer: Could not choose EGL config.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| if (nativeWindow) { |
| fSurface = gfCreateWindowSurface(fDisplay, |
| static_cast<EGLConfig>(fConfig), |
| (EGLNativeWindowType)nativeWindow, |
| surfaceAttribs); |
| } else { |
| fSurface = gfCreatePbufferSurface(fDisplay, |
| static_cast<EGLConfig>(fConfig), |
| surfaceAttribs); |
| } |
| if (EGL_NO_SURFACE == fSurface) { |
| SkDebugf("Command Buffer: Could not create EGL surface.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| static const EGLint contextAttribs[] = { |
| EGL_CONTEXT_CLIENT_VERSION, 2, |
| EGL_NONE |
| }; |
| fContext = gfCreateContext(fDisplay, static_cast<EGLConfig>(fConfig), nullptr, contextAttribs); |
| if (EGL_NO_CONTEXT == fContext) { |
| SkDebugf("Command Buffer: Could not create EGL context.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| if (!gfMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { |
| SkDebugf("Command Buffer: Could not make EGL context current.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| SkAutoTUnref<const GrGLInterface> gl(GrGLCreateCommandBufferInterface()); |
| if (nullptr == gl.get()) { |
| SkDebugf("Command Buffer: Could not create CommandBuffer GL interface.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| if (!gl->validate()) { |
| SkDebugf("Command Buffer: Could not validate CommandBuffer GL interface.\n"); |
| this->destroyGLContext(); |
| return; |
| } |
| |
| this->init(gl.detach()); |
| } |
| |
| SkCommandBufferGLContext::~SkCommandBufferGLContext() { |
| this->teardown(); |
| this->destroyGLContext(); |
| } |
| |
| void SkCommandBufferGLContext::destroyGLContext() { |
| if (!gfFunctionsLoadedSuccessfully) { |
| return; |
| } |
| if (fDisplay) { |
| gfMakeCurrent(fDisplay, 0, 0, 0); |
| |
| if (fContext) { |
| gfDestroyContext(fDisplay, fContext); |
| fContext = EGL_NO_CONTEXT; |
| } |
| |
| if (fSurface) { |
| gfDestroySurface(fDisplay, fSurface); |
| fSurface = EGL_NO_SURFACE; |
| } |
| |
| gfTerminate(fDisplay); |
| fDisplay = EGL_NO_DISPLAY; |
| } |
| } |
| |
| void SkCommandBufferGLContext::onPlatformMakeCurrent() const { |
| if (!gfFunctionsLoadedSuccessfully) { |
| return; |
| } |
| if (!gfMakeCurrent(fDisplay, fSurface, fSurface, fContext)) { |
| SkDebugf("Command Buffer: Could not make EGL context current.\n"); |
| } |
| } |
| |
| void SkCommandBufferGLContext::onPlatformSwapBuffers() const { |
| if (!gfFunctionsLoadedSuccessfully) { |
| return; |
| } |
| if (!gfSwapBuffers(fDisplay, fSurface)) { |
| SkDebugf("Command Buffer: Could not complete gfSwapBuffers.\n"); |
| } |
| } |
| |
| GrGLFuncPtr SkCommandBufferGLContext::onPlatformGetProcAddress(const char* name) const { |
| if (!gfFunctionsLoadedSuccessfully) { |
| return nullptr; |
| } |
| return gfGetProcAddress(name); |
| } |
| |
| void SkCommandBufferGLContext::presentCommandBuffer() { |
| if (this->gl()) { |
| this->gl()->fFunctions.fFlush(); |
| } |
| |
| this->onPlatformSwapBuffers(); |
| } |
| |
| bool SkCommandBufferGLContext::makeCurrent() { |
| return gfMakeCurrent(fDisplay, fSurface, fSurface, fContext) != EGL_FALSE; |
| } |
| |
| int SkCommandBufferGLContext::getStencilBits() { |
| EGLint result = 0; |
| gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_STENCIL_SIZE, &result); |
| return result; |
| } |
| |
| int SkCommandBufferGLContext::getSampleCount() { |
| EGLint result = 0; |
| gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_SAMPLES, &result); |
| return result; |
| } |