439 lines
15 KiB
C++
439 lines
15 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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EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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static bool findExtension(const char* exts, const char* name) {
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if (!exts)
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return false;
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size_t len = strlen(name);
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const char* pos = exts;
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while ((pos = strstr(pos, name)) != NULL) {
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if (pos[len] == '\0' || pos[len] == ' ')
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return true;
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pos += len;
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}
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return false;
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}
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RenderEngine* RenderEngine::create(EGLDisplay display, int hwcFormat) {
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// EGL_ANDROIDX_no_config_context is an experimental extension with no
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// written specification. It will be replaced by something more formal.
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// SurfaceFlinger is using it to allow a single EGLContext to render to
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// both a 16-bit primary display framebuffer and a 32-bit virtual display
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// framebuffer.
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//
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// The code assumes that ES2 or later is available if this extension is
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// supported.
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EGLConfig config = EGL_NO_CONFIG;
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if (!findExtension(
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eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS),
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"EGL_ANDROIDX_no_config_context")) {
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config = chooseEglConfig(display, hwcFormat);
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}
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EGLint renderableType = 0;
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if (config == EGL_NO_CONFIG) {
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renderableType = EGL_OPENGL_ES2_BIT;
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} else if (!eglGetConfigAttrib(display, config,
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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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EGLint contextClientVersion = 0;
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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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EGLConfig dummyConfig = config;
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if (dummyConfig == EGL_NO_CONFIG) {
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dummyConfig = chooseEglConfig(display, hwcFormat);
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}
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EGLint attribs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE };
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EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, 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->setEGLHandles(config, 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 = %zu", engine->getMaxTextureSize());
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ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", 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::setEGLHandles(EGLConfig config, EGLContext ctxt) {
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mEGLConfig = config;
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mEGLContext = ctxt;
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}
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EGLContext RenderEngine::getEGLConfig() const {
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return mEGLConfig;
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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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static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs,
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EGLint attribute, EGLint wanted, EGLConfig* outConfig) {
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EGLConfig config = NULL;
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EGLint numConfigs = -1, n = 0;
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eglGetConfigs(dpy, NULL, 0, &numConfigs);
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EGLConfig* const configs = new EGLConfig[numConfigs];
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eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
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if (n) {
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if (attribute != EGL_NONE) {
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for (int i=0 ; i<n ; i++) {
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EGLint value = 0;
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eglGetConfigAttrib(dpy, configs[i], attribute, &value);
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if (wanted == value) {
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*outConfig = configs[i];
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delete [] configs;
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return NO_ERROR;
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}
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}
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} else {
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// just pick the first one
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*outConfig = configs[0];
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delete [] configs;
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return NO_ERROR;
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}
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}
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delete [] configs;
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return NAME_NOT_FOUND;
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}
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class EGLAttributeVector {
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struct Attribute;
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class Adder;
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friend class Adder;
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KeyedVector<Attribute, EGLint> mList;
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struct Attribute {
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Attribute() {};
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Attribute(EGLint v) : v(v) { }
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EGLint v;
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bool operator < (const Attribute& other) const {
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// this places EGL_NONE at the end
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EGLint lhs(v);
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EGLint rhs(other.v);
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if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
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if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
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return lhs < rhs;
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}
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};
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class Adder {
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friend class EGLAttributeVector;
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EGLAttributeVector& v;
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EGLint attribute;
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Adder(EGLAttributeVector& v, EGLint attribute)
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: v(v), attribute(attribute) {
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}
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public:
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void operator = (EGLint value) {
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if (attribute != EGL_NONE) {
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v.mList.add(attribute, value);
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}
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}
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operator EGLint () const { return v.mList[attribute]; }
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};
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public:
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EGLAttributeVector() {
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mList.add(EGL_NONE, EGL_NONE);
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}
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void remove(EGLint attribute) {
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if (attribute != EGL_NONE) {
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mList.removeItem(attribute);
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}
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}
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Adder operator [] (EGLint attribute) {
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return Adder(*this, attribute);
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}
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EGLint operator [] (EGLint attribute) const {
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return mList[attribute];
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}
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// cast-operator to (EGLint const*)
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operator EGLint const* () const { return &mList.keyAt(0).v; }
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};
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static status_t selectEGLConfig(EGLDisplay display, EGLint format,
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EGLint renderableType, EGLConfig* config) {
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// select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
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// it is to be used with WIFI displays
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status_t err;
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EGLint wantedAttribute;
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EGLint wantedAttributeValue;
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EGLAttributeVector attribs;
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if (renderableType) {
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attribs[EGL_RENDERABLE_TYPE] = renderableType;
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attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
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attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT|EGL_PBUFFER_BIT;
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attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
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attribs[EGL_RED_SIZE] = 8;
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attribs[EGL_GREEN_SIZE] = 8;
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attribs[EGL_BLUE_SIZE] = 8;
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wantedAttribute = EGL_NONE;
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wantedAttributeValue = EGL_NONE;
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} else {
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// if no renderable type specified, fallback to a simplified query
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wantedAttribute = EGL_NATIVE_VISUAL_ID;
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wantedAttributeValue = format;
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}
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err = selectConfigForAttribute(display, attribs,
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wantedAttribute, wantedAttributeValue, config);
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if (err == NO_ERROR) {
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EGLint caveat;
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if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
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ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
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}
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return err;
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}
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EGLConfig RenderEngine::chooseEglConfig(EGLDisplay display, int format) {
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status_t err;
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EGLConfig config;
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// First try to get an ES2 config
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err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
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if (err != NO_ERROR) {
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// If ES2 fails, try ES1
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err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
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if (err != NO_ERROR) {
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// still didn't work, probably because we're on the emulator...
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// try a simplified query
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ALOGW("no suitable EGLConfig found, trying a simpler query");
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err = selectEGLConfig(display, format, 0, &config);
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if (err != NO_ERROR) {
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// this EGL is too lame for android
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LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
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}
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}
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}
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// print some debugging info
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EGLint r,g,b,a;
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eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
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eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
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eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
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eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
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ALOGI("EGL information:");
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ALOGI("vendor : %s", eglQueryString(display, EGL_VENDOR));
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ALOGI("version : %s", eglQueryString(display, EGL_VERSION));
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ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
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ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
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ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
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return config;
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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// ---------------------------------------------------------------------------
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