| // |
| // Copyright (c) 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. |
| // |
| |
| #include <string.h> |
| #include <cassert> |
| #include <vector> |
| |
| #include "EGLWindow.h" |
| #include "OSWindow.h" |
| #include "common/debug.h" |
| |
| EGLPlatformParameters::EGLPlatformParameters() |
| : renderer(EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE), |
| majorVersion(EGL_DONT_CARE), |
| minorVersion(EGL_DONT_CARE), |
| deviceType(EGL_DONT_CARE) |
| { |
| } |
| |
| EGLPlatformParameters::EGLPlatformParameters(EGLint renderer) |
| : renderer(renderer), |
| majorVersion(EGL_DONT_CARE), |
| minorVersion(EGL_DONT_CARE), |
| deviceType(EGL_DONT_CARE) |
| { |
| if (renderer == EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE || |
| renderer == EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE) |
| { |
| deviceType = EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE; |
| } |
| } |
| |
| EGLPlatformParameters::EGLPlatformParameters(EGLint renderer, EGLint majorVersion, EGLint minorVersion, EGLint useWarp) |
| : renderer(renderer), |
| majorVersion(majorVersion), |
| minorVersion(minorVersion), |
| deviceType(useWarp) |
| { |
| } |
| |
| bool operator<(const EGLPlatformParameters &a, const EGLPlatformParameters &b) |
| { |
| if (a.renderer != b.renderer) |
| { |
| return a.renderer < b.renderer; |
| } |
| |
| if (a.majorVersion != b.majorVersion) |
| { |
| return a.majorVersion < b.majorVersion; |
| } |
| |
| if (a.minorVersion != b.minorVersion) |
| { |
| return a.minorVersion < b.minorVersion; |
| } |
| |
| return a.deviceType < b.deviceType; |
| } |
| |
| bool operator==(const EGLPlatformParameters &a, const EGLPlatformParameters &b) |
| { |
| return (a.renderer == b.renderer) && |
| (a.majorVersion == b.majorVersion) && |
| (a.minorVersion == b.minorVersion) && |
| (a.deviceType == b.deviceType); |
| } |
| |
| EGLWindow::EGLWindow(size_t width, size_t height, EGLint glesMajorVersion, const EGLPlatformParameters &platform) |
| : mDisplay(EGL_NO_DISPLAY), |
| mSurface(EGL_NO_SURFACE), |
| mContext(EGL_NO_CONTEXT), |
| mClientVersion(glesMajorVersion), |
| mPlatform(platform), |
| mWidth(width), |
| mHeight(height), |
| mRedBits(-1), |
| mGreenBits(-1), |
| mBlueBits(-1), |
| mAlphaBits(-1), |
| mDepthBits(-1), |
| mStencilBits(-1), |
| mMultisample(false), |
| mSwapInterval(-1) |
| { |
| } |
| |
| EGLWindow::~EGLWindow() |
| { |
| destroyGL(); |
| } |
| |
| void EGLWindow::swap() |
| { |
| eglSwapBuffers(mDisplay, mSurface); |
| } |
| |
| EGLConfig EGLWindow::getConfig() const |
| { |
| return mConfig; |
| } |
| |
| EGLDisplay EGLWindow::getDisplay() const |
| { |
| return mDisplay; |
| } |
| |
| EGLSurface EGLWindow::getSurface() const |
| { |
| return mSurface; |
| } |
| |
| EGLContext EGLWindow::getContext() const |
| { |
| return mContext; |
| } |
| |
| bool EGLWindow::initializeGL(OSWindow *osWindow) |
| { |
| PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT = reinterpret_cast<PFNEGLGETPLATFORMDISPLAYEXTPROC>(eglGetProcAddress("eglGetPlatformDisplayEXT")); |
| if (!eglGetPlatformDisplayEXT) |
| { |
| return false; |
| } |
| |
| std::vector<EGLint> displayAttributes; |
| displayAttributes.push_back(EGL_PLATFORM_ANGLE_TYPE_ANGLE); |
| displayAttributes.push_back(mPlatform.renderer); |
| displayAttributes.push_back(EGL_PLATFORM_ANGLE_MAX_VERSION_MAJOR_ANGLE); |
| displayAttributes.push_back(mPlatform.majorVersion); |
| displayAttributes.push_back(EGL_PLATFORM_ANGLE_MAX_VERSION_MINOR_ANGLE); |
| displayAttributes.push_back(mPlatform.minorVersion); |
| |
| if (mPlatform.deviceType != EGL_DONT_CARE) |
| { |
| displayAttributes.push_back(EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE); |
| displayAttributes.push_back(mPlatform.deviceType); |
| } |
| displayAttributes.push_back(EGL_NONE); |
| |
| mDisplay = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, osWindow->getNativeDisplay(), &displayAttributes[0]); |
| if (mDisplay == EGL_NO_DISPLAY) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| EGLint majorVersion, minorVersion; |
| if (eglInitialize(mDisplay, &majorVersion, &minorVersion) == EGL_FALSE) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| eglBindAPI(EGL_OPENGL_ES_API); |
| if (eglGetError() != EGL_SUCCESS) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| const EGLint configAttributes[] = |
| { |
| EGL_RED_SIZE, (mRedBits >= 0) ? mRedBits : EGL_DONT_CARE, |
| EGL_GREEN_SIZE, (mGreenBits >= 0) ? mGreenBits : EGL_DONT_CARE, |
| EGL_BLUE_SIZE, (mBlueBits >= 0) ? mBlueBits : EGL_DONT_CARE, |
| EGL_ALPHA_SIZE, (mAlphaBits >= 0) ? mAlphaBits : EGL_DONT_CARE, |
| EGL_DEPTH_SIZE, (mDepthBits >= 0) ? mDepthBits : EGL_DONT_CARE, |
| EGL_STENCIL_SIZE, (mStencilBits >= 0) ? mStencilBits : EGL_DONT_CARE, |
| EGL_SAMPLE_BUFFERS, mMultisample ? 1 : 0, |
| EGL_NONE |
| }; |
| |
| EGLint configCount; |
| if (!eglChooseConfig(mDisplay, configAttributes, &mConfig, 1, &configCount) || (configCount != 1)) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_RED_SIZE, &mRedBits); |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_GREEN_SIZE, &mGreenBits); |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_BLUE_SIZE, &mBlueBits); |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_ALPHA_SIZE, &mBlueBits); |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_DEPTH_SIZE, &mDepthBits); |
| eglGetConfigAttrib(mDisplay, mConfig, EGL_STENCIL_SIZE, &mStencilBits); |
| |
| std::vector<EGLint> surfaceAttributes; |
| if (strstr(eglQueryString(mDisplay, EGL_EXTENSIONS), "EGL_NV_post_sub_buffer") != nullptr) |
| { |
| surfaceAttributes.push_back(EGL_POST_SUB_BUFFER_SUPPORTED_NV); |
| surfaceAttributes.push_back(EGL_TRUE); |
| } |
| |
| surfaceAttributes.push_back(EGL_NONE); |
| |
| mSurface = eglCreateWindowSurface(mDisplay, mConfig, osWindow->getNativeWindow(), &surfaceAttributes[0]); |
| if (eglGetError() != EGL_SUCCESS) |
| { |
| destroyGL(); |
| return false; |
| } |
| ASSERT(mSurface != EGL_NO_SURFACE); |
| |
| EGLint contextAttibutes[] = |
| { |
| EGL_CONTEXT_CLIENT_VERSION, mClientVersion, |
| EGL_NONE |
| }; |
| |
| mContext = eglCreateContext(mDisplay, mConfig, NULL, contextAttibutes); |
| if (eglGetError() != EGL_SUCCESS) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| eglMakeCurrent(mDisplay, mSurface, mSurface, mContext); |
| if (eglGetError() != EGL_SUCCESS) |
| { |
| destroyGL(); |
| return false; |
| } |
| |
| if (mSwapInterval != -1) |
| { |
| eglSwapInterval(mDisplay, mSwapInterval); |
| } |
| |
| return true; |
| } |
| |
| void EGLWindow::destroyGL() |
| { |
| if (mSurface != EGL_NO_SURFACE) |
| { |
| assert(mDisplay != EGL_NO_DISPLAY); |
| eglDestroySurface(mDisplay, mSurface); |
| mSurface = EGL_NO_SURFACE; |
| } |
| |
| if (mContext != EGL_NO_CONTEXT) |
| { |
| assert(mDisplay != EGL_NO_DISPLAY); |
| eglDestroyContext(mDisplay, mContext); |
| mContext = EGL_NO_CONTEXT; |
| } |
| |
| if (mDisplay != EGL_NO_DISPLAY) |
| { |
| eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
| eglTerminate(mDisplay); |
| mDisplay = EGL_NO_DISPLAY; |
| } |
| } |
| |
| bool EGLWindow::isGLInitialized() const |
| { |
| return mSurface != EGL_NO_SURFACE && |
| mContext != EGL_NO_CONTEXT && |
| mDisplay != EGL_NO_DISPLAY; |
| } |
| |
| // Find an EGLConfig that is an exact match for the specified attributes. EGL_FALSE is returned if |
| // the EGLConfig is found. This indicates that the EGLConfig is not supported. |
| EGLBoolean EGLWindow::FindEGLConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *config) |
| { |
| EGLint numConfigs = 0; |
| eglGetConfigs(dpy, nullptr, 0, &numConfigs); |
| std::vector<EGLConfig> allConfigs(numConfigs); |
| eglGetConfigs(dpy, allConfigs.data(), allConfigs.size(), &numConfigs); |
| |
| for (size_t i = 0; i < allConfigs.size(); i++) |
| { |
| bool matchFound = true; |
| for (const EGLint *curAttrib = attrib_list; curAttrib[0] != EGL_NONE; curAttrib += 2) |
| { |
| EGLint actualValue = EGL_DONT_CARE; |
| eglGetConfigAttrib(dpy, allConfigs[i], curAttrib[0], &actualValue); |
| if (curAttrib[1] != actualValue) |
| { |
| matchFound = false; |
| break; |
| } |
| } |
| |
| if (matchFound) |
| { |
| *config = allConfigs[i]; |
| return EGL_TRUE; |
| } |
| } |
| |
| return EGL_FALSE; |
| } |