d555684cb3
turned off by default. Bug: 10809349 Change-Id: I3e6b8c7860e6b0e122b8f07de4020967cd1f005c
240 lines
8.0 KiB
C++
240 lines
8.0 KiB
C++
/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cutils/log.h>
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#include <ui/Rect.h>
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#include <ui/Region.h>
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#include "RenderEngine.h"
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#include "GLES10RenderEngine.h"
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#include "GLES11RenderEngine.h"
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#include "GLES20RenderEngine.h"
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#include "GLExtensions.h"
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#include "Mesh.h"
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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RenderEngine* RenderEngine::create(EGLDisplay display, EGLConfig config) {
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EGLint renderableType = 0;
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EGLint contextClientVersion = 0;
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// query the renderable type, setting the EGL_CONTEXT_CLIENT_VERSION accordingly
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if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
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LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
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}
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if (renderableType & EGL_OPENGL_ES2_BIT) {
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contextClientVersion = 2;
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} else if (renderableType & EGL_OPENGL_ES_BIT) {
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contextClientVersion = 1;
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} else {
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LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
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}
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// Also create our EGLContext
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EGLint contextAttributes[] = {
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EGL_CONTEXT_CLIENT_VERSION, contextClientVersion, // MUST be first
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#ifdef EGL_IMG_context_priority
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#ifdef HAS_CONTEXT_PRIORITY
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#warning "using EGL_IMG_context_priority"
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EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
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#endif
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#endif
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EGL_NONE, EGL_NONE
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};
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EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes);
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// if can't create a GL context, we can only abort.
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LOG_ALWAYS_FATAL_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed");
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// now figure out what version of GL did we actually get
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// NOTE: a dummy surface is not needed if KHR_create_context is supported
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EGLint attribs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE };
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EGLSurface dummy = eglCreatePbufferSurface(display, config, attribs);
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LOG_ALWAYS_FATAL_IF(dummy==EGL_NO_SURFACE, "can't create dummy pbuffer");
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EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
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LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
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GLExtensions& extensions(GLExtensions::getInstance());
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extensions.initWithGLStrings(
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glGetString(GL_VENDOR),
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glGetString(GL_RENDERER),
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glGetString(GL_VERSION),
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glGetString(GL_EXTENSIONS));
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GlesVersion version = parseGlesVersion( extensions.getVersion() );
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// initialize the renderer while GL is current
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RenderEngine* engine = NULL;
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switch (version) {
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case GLES_VERSION_1_0:
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engine = new GLES10RenderEngine();
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break;
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case GLES_VERSION_1_1:
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engine = new GLES11RenderEngine();
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break;
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case GLES_VERSION_2_0:
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case GLES_VERSION_3_0:
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engine = new GLES20RenderEngine();
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break;
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}
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engine->setEGLContext(ctxt);
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ALOGI("OpenGL ES informations:");
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ALOGI("vendor : %s", extensions.getVendor());
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ALOGI("renderer : %s", extensions.getRenderer());
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ALOGI("version : %s", extensions.getVersion());
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ALOGI("extensions: %s", extensions.getExtension());
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ALOGI("GL_MAX_TEXTURE_SIZE = %d", engine->getMaxTextureSize());
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ALOGI("GL_MAX_VIEWPORT_DIMS = %d", engine->getMaxViewportDims());
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eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroySurface(display, dummy);
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return engine;
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}
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RenderEngine::RenderEngine() : mEGLContext(EGL_NO_CONTEXT) {
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}
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RenderEngine::~RenderEngine() {
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}
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void RenderEngine::setEGLContext(EGLContext ctxt) {
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mEGLContext = ctxt;
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}
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EGLContext RenderEngine::getEGLContext() const {
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return mEGLContext;
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}
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void RenderEngine::checkErrors() const {
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do {
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// there could be more than one error flag
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GLenum error = glGetError();
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if (error == GL_NO_ERROR)
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break;
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ALOGE("GL error 0x%04x", int(error));
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} while (true);
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}
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RenderEngine::GlesVersion RenderEngine::parseGlesVersion(const char* str) {
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int major, minor;
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if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
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if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
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ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
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return GLES_VERSION_1_0;
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}
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}
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if (major == 1 && minor == 0) return GLES_VERSION_1_0;
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if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
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if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
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if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
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ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
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return GLES_VERSION_1_0;
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}
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void RenderEngine::fillRegionWithColor(const Region& region, uint32_t height,
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float red, float green, float blue, float alpha) {
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size_t c;
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Rect const* r = region.getArray(&c);
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Mesh mesh(Mesh::TRIANGLES, c*6, 2);
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Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
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for (size_t i=0 ; i<c ; i++, r++) {
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position[i*6 + 0].x = r->left;
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position[i*6 + 0].y = height - r->top;
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position[i*6 + 1].x = r->left;
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position[i*6 + 1].y = height - r->bottom;
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position[i*6 + 2].x = r->right;
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position[i*6 + 2].y = height - r->bottom;
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position[i*6 + 3].x = r->left;
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position[i*6 + 3].y = height - r->top;
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position[i*6 + 4].x = r->right;
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position[i*6 + 4].y = height - r->bottom;
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position[i*6 + 5].x = r->right;
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position[i*6 + 5].y = height - r->top;
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}
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setupFillWithColor(red, green, blue, alpha);
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drawMesh(mesh);
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}
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void RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
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glClearColor(red, green, blue, alpha);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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void RenderEngine::setScissor(
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uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) {
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glScissor(left, bottom, right, top);
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glEnable(GL_SCISSOR_TEST);
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}
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void RenderEngine::disableScissor() {
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glDisable(GL_SCISSOR_TEST);
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}
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void RenderEngine::genTextures(size_t count, uint32_t* names) {
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glGenTextures(count, names);
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}
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void RenderEngine::deleteTextures(size_t count, uint32_t const* names) {
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glDeleteTextures(count, names);
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}
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void RenderEngine::readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels) {
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glReadPixels(l, b, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
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}
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void RenderEngine::dump(String8& result) {
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const GLExtensions& extensions(GLExtensions::getInstance());
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result.appendFormat("GLES: %s, %s, %s\n",
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extensions.getVendor(),
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extensions.getRenderer(),
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extensions.getVersion());
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result.appendFormat("%s\n", extensions.getExtension());
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}
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// ---------------------------------------------------------------------------
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RenderEngine::BindImageAsFramebuffer::BindImageAsFramebuffer(
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RenderEngine& engine, EGLImageKHR image) : mEngine(engine)
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{
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mEngine.bindImageAsFramebuffer(image, &mTexName, &mFbName, &mStatus);
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ALOGE_IF(mStatus != GL_FRAMEBUFFER_COMPLETE_OES,
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"glCheckFramebufferStatusOES error %d", mStatus);
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}
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RenderEngine::BindImageAsFramebuffer::~BindImageAsFramebuffer() {
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// back to main framebuffer
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mEngine.unbindFramebuffer(mTexName, mFbName);
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}
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status_t RenderEngine::BindImageAsFramebuffer::getStatus() const {
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return mStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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// ---------------------------------------------------------------------------
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