Move SkGLContext and some GrGLInterface implementations to skgputest module

src/gpu/gl/angle/SkANGLEGLContext.cpp

-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "gl/angle/SkANGLEGLContext.h"
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include "gl/GrGLDefines.h"
-#include "gl/GrGLUtil.h"
-
-#define EGL_PLATFORM_ANGLE_ANGLE                0x3202
-#define EGL_PLATFORM_ANGLE_TYPE_ANGLE           0x3203
-#define EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE      0x3207
-#define EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE     0x3208
-#define EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE    0x320D
-
-void* SkANGLEGLContext::GetD3DEGLDisplay(void* nativeDisplay, bool useGLBackend) {
-    PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
-    eglGetPlatformDisplayEXT =
-        (PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress("eglGetPlatformDisplayEXT");
-
-    if (!eglGetPlatformDisplayEXT) {
-        return eglGetDisplay(static_cast<EGLNativeDisplayType>(nativeDisplay));
-    }
-
-    EGLDisplay display = EGL_NO_DISPLAY;
-    if (useGLBackend) {
-        // Try for an ANGLE D3D11 context, fall back to D3D9.
-        EGLint attribs[3] = {
-              EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-              EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE,
-              EGL_NONE
-        };
-        display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, nativeDisplay, attribs);
-    } else {
-        // Try for an ANGLE D3D11 context, fall back to D3D9, and finally GL.
-        EGLint attribs[3][3] = {
-            {
-                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-                EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE,
-                EGL_NONE
-            },
-            {
-                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-                EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE,
-                EGL_NONE
-            },
-            {
-                EGL_PLATFORM_ANGLE_TYPE_ANGLE,
-                EGL_PLATFORM_ANGLE_TYPE_OPENGL_ANGLE,
-                EGL_NONE
-            }
-        };
-        for (int i = 0; i < 3 && display == EGL_NO_DISPLAY; ++i) {
-            display = eglGetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE,nativeDisplay, attribs[i]);
-        }
-    }
-    return display;
-}
-
-SkANGLEGLContext::SkANGLEGLContext(bool useGLBackend)
-    : fContext(EGL_NO_CONTEXT)
-    , fDisplay(EGL_NO_DISPLAY)
-    , fSurface(EGL_NO_SURFACE) {
-
-    EGLint numConfigs;
-    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
-    };
-
-    fIsGLBackend = useGLBackend;
-    fDisplay = GetD3DEGLDisplay(EGL_DEFAULT_DISPLAY, useGLBackend);
-    if (EGL_NO_DISPLAY == fDisplay) {
-        SkDebugf("Could not create EGL display!");
-        return;
-    }
-
-    EGLint majorVersion;
-    EGLint minorVersion;
-    eglInitialize(fDisplay, &majorVersion, &minorVersion);
-
-    EGLConfig surfaceConfig;
-    eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs);
-
-    static const EGLint contextAttribs[] = {
-        EGL_CONTEXT_CLIENT_VERSION, 2,
-        EGL_NONE
-    };
-    fContext = eglCreateContext(fDisplay, surfaceConfig, nullptr, contextAttribs);
-
-
-    static const EGLint surfaceAttribs[] = {
-        EGL_WIDTH, 1,
-        EGL_HEIGHT, 1,
-        EGL_NONE
-    };
-
-    fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs);
-
-    eglMakeCurrent(fDisplay, fSurface, fSurface, fContext);
-
-    SkAutoTUnref<const GrGLInterface> gl(GrGLCreateANGLEInterface());
-    if (nullptr == gl.get()) {
-        SkDebugf("Could not create ANGLE GL interface!\n");
-        this->destroyGLContext();
-        return;
-    }
-    if (!gl->validate()) {
-        SkDebugf("Could not validate ANGLE GL interface!\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    this->init(gl.release());
-}
-
-SkANGLEGLContext::~SkANGLEGLContext() {
-    this->teardown();
-    this->destroyGLContext();
-}
-
-GrEGLImage SkANGLEGLContext::texture2DToEGLImage(GrGLuint texID) const {
-    if (!this->gl()->hasExtension("EGL_KHR_gl_texture_2D_image")) {
-        return GR_EGL_NO_IMAGE;
-    }
-    GrEGLImage img;
-    GrEGLint attribs[] = { GR_EGL_GL_TEXTURE_LEVEL, 0,
-                           GR_EGL_IMAGE_PRESERVED, GR_EGL_TRUE,
-                           GR_EGL_NONE };
-    // 64 bit cast is to shut Visual C++ up about casting 32 bit value to a pointer.
-    GrEGLClientBuffer clientBuffer = reinterpret_cast<GrEGLClientBuffer>((uint64_t)texID);
-    GR_GL_CALL_RET(this->gl(), img,
-                   EGLCreateImage(fDisplay, fContext, GR_EGL_GL_TEXTURE_2D, clientBuffer,
-                                  attribs));
-    return img;
-}
-
-void SkANGLEGLContext::destroyEGLImage(GrEGLImage image) const {
-    GR_GL_CALL(this->gl(), EGLDestroyImage(fDisplay, image));
-}
-
-GrGLuint SkANGLEGLContext::eglImageToExternalTexture(GrEGLImage image) const {
-    GrGLClearErr(this->gl());
-    if (!this->gl()->hasExtension("GL_OES_EGL_image_external")) {
-        return 0;
-    }
-    typedef GrGLvoid (*EGLImageTargetTexture2DProc)(GrGLenum, GrGLeglImage);
-
-    EGLImageTargetTexture2DProc glEGLImageTargetTexture2D =
-        (EGLImageTargetTexture2DProc)eglGetProcAddress("glEGLImageTargetTexture2DOES");
-    if (!glEGLImageTargetTexture2D) {
-        return 0;
-    }
-    GrGLuint texID;
-    GR_GL_CALL(this->gl(), GenTextures(1, &texID));
-    if (!texID) {
-        return 0;
-    }
-    GR_GL_CALL(this->gl(), BindTexture(GR_GL_TEXTURE_EXTERNAL, texID));
-    if (GR_GL_GET_ERROR(this->gl()) != GR_GL_NO_ERROR) {
-        GR_GL_CALL(this->gl(), DeleteTextures(1, &texID));
-        return 0;
-    }
-    glEGLImageTargetTexture2D(GR_GL_TEXTURE_EXTERNAL, image);
-    if (GR_GL_GET_ERROR(this->gl()) != GR_GL_NO_ERROR) {
-        GR_GL_CALL(this->gl(), DeleteTextures(1, &texID));
-        return 0;
-    }
-    return texID;
-}
-
-SkGLContext* SkANGLEGLContext::createNew() const {
-#ifdef SK_BUILD_FOR_WIN
-    SkGLContext* ctx = fIsGLBackend ? SkANGLEGLContext::CreateOpenGL()
-                                    : SkANGLEGLContext::CreateDirectX();
-#else
-    SkGLContext* ctx = SkANGLEGLContext::CreateOpenGL();
-#endif
-    if (ctx) {
-        ctx->makeCurrent();
-    }
-    return ctx;
-}
-
-void SkANGLEGLContext::destroyGLContext() {
-    if (fDisplay) {
-        eglMakeCurrent(fDisplay, 0, 0, 0);
-
-        if (fContext) {
-            eglDestroyContext(fDisplay, fContext);
-            fContext = EGL_NO_CONTEXT;
-        }
-
-        if (fSurface) {
-            eglDestroySurface(fDisplay, fSurface);
-            fSurface = EGL_NO_SURFACE;
-        }
-
-        //TODO should we close the display?
-        fDisplay = EGL_NO_DISPLAY;
-    }
-}
-
-void SkANGLEGLContext::onPlatformMakeCurrent() const {
-    if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
-        SkDebugf("Could not set the context.\n");
-    }
-}
-
-void SkANGLEGLContext::onPlatformSwapBuffers() const {
-    if (!eglSwapBuffers(fDisplay, fSurface)) {
-        SkDebugf("Could not complete eglSwapBuffers.\n");
-    }
-}
-
-GrGLFuncPtr SkANGLEGLContext::onPlatformGetProcAddress(const char* name) const {
-    return eglGetProcAddress(name);
-}