1/* 2 * Copyright 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define ATRACE_TAG ATRACE_TAG_GRAPHICS 18 19#include <GLES2/gl2.h> 20#include <GLES2/gl2ext.h> 21 22#include <ui/Rect.h> 23 24#include <utils/String8.h> 25#include <utils/Trace.h> 26 27#include <cutils/compiler.h> 28#include <gui/ISurfaceComposer.h> 29#include <math.h> 30 31#include "GLES20RenderEngine.h" 32#include "Program.h" 33#include "ProgramCache.h" 34#include "Description.h" 35#include "Mesh.h" 36#include "Texture.h" 37 38// --------------------------------------------------------------------------- 39namespace android { 40// --------------------------------------------------------------------------- 41 42GLES20RenderEngine::GLES20RenderEngine() : 43 mVpWidth(0), mVpHeight(0) { 44 45 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 46 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims); 47 48 glPixelStorei(GL_UNPACK_ALIGNMENT, 4); 49 glPixelStorei(GL_PACK_ALIGNMENT, 4); 50 51 const uint16_t protTexData[] = { 0 }; 52 glGenTextures(1, &mProtectedTexName); 53 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 54 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 55 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 56 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 57 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 58 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, 59 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData); 60 61 //mColorBlindnessCorrection = M; 62} 63 64GLES20RenderEngine::~GLES20RenderEngine() { 65} 66 67 68size_t GLES20RenderEngine::getMaxTextureSize() const { 69 return mMaxTextureSize; 70} 71 72size_t GLES20RenderEngine::getMaxViewportDims() const { 73 return 74 mMaxViewportDims[0] < mMaxViewportDims[1] ? 75 mMaxViewportDims[0] : mMaxViewportDims[1]; 76} 77 78void GLES20RenderEngine::setViewportAndProjection( 79 size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap, 80 Transform::orientation_flags rotation) { 81 82 size_t l = sourceCrop.left; 83 size_t r = sourceCrop.right; 84 85 // In GL, (0, 0) is the bottom-left corner, so flip y coordinates 86 size_t t = hwh - sourceCrop.top; 87 size_t b = hwh - sourceCrop.bottom; 88 89 mat4 m; 90 if (yswap) { 91 m = mat4::ortho(l, r, t, b, 0, 1); 92 } else { 93 m = mat4::ortho(l, r, b, t, 0, 1); 94 } 95 96 // Apply custom rotation to the projection. 97 float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f; 98 switch (rotation) { 99 case Transform::ROT_0: 100 break; 101 case Transform::ROT_90: 102 m = mat4::rotate(rot90InRadians, vec3(0,0,1)) * m; 103 break; 104 case Transform::ROT_180: 105 m = mat4::rotate(rot90InRadians * 2.0f, vec3(0,0,1)) * m; 106 break; 107 case Transform::ROT_270: 108 m = mat4::rotate(rot90InRadians * 3.0f, vec3(0,0,1)) * m; 109 break; 110 default: 111 break; 112 } 113 114 glViewport(0, 0, vpw, vph); 115 mState.setProjectionMatrix(m); 116 mVpWidth = vpw; 117 mVpHeight = vph; 118} 119 120#ifdef USE_HWC2 121void GLES20RenderEngine::setupLayerBlending(bool premultipliedAlpha, 122 bool opaque, float alpha) { 123#else 124void GLES20RenderEngine::setupLayerBlending( 125 bool premultipliedAlpha, bool opaque, int alpha) { 126#endif 127 128 mState.setPremultipliedAlpha(premultipliedAlpha); 129 mState.setOpaque(opaque); 130#ifdef USE_HWC2 131 mState.setPlaneAlpha(alpha); 132 133 if (alpha < 1.0f || !opaque) { 134#else 135 mState.setPlaneAlpha(alpha / 255.0f); 136 137 if (alpha < 0xFF || !opaque) { 138#endif 139 glEnable(GL_BLEND); 140 glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 141 } else { 142 glDisable(GL_BLEND); 143 } 144} 145 146#ifdef USE_HWC2 147void GLES20RenderEngine::setupDimLayerBlending(float alpha) { 148#else 149void GLES20RenderEngine::setupDimLayerBlending(int alpha) { 150#endif 151 mState.setPlaneAlpha(1.0f); 152 mState.setPremultipliedAlpha(true); 153 mState.setOpaque(false); 154#ifdef USE_HWC2 155 mState.setColor(0, 0, 0, alpha); 156#else 157 mState.setColor(0, 0, 0, alpha/255.0f); 158#endif 159 mState.disableTexture(); 160 161#ifdef USE_HWC2 162 if (alpha == 1.0f) { 163#else 164 if (alpha == 0xFF) { 165#endif 166 glDisable(GL_BLEND); 167 } else { 168 glEnable(GL_BLEND); 169 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); 170 } 171} 172 173void GLES20RenderEngine::setupLayerTexturing(const Texture& texture) { 174 GLuint target = texture.getTextureTarget(); 175 glBindTexture(target, texture.getTextureName()); 176 GLenum filter = GL_NEAREST; 177 if (texture.getFiltering()) { 178 filter = GL_LINEAR; 179 } 180 glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 181 glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 182 glTexParameteri(target, GL_TEXTURE_MAG_FILTER, filter); 183 glTexParameteri(target, GL_TEXTURE_MIN_FILTER, filter); 184 185 mState.setTexture(texture); 186} 187 188void GLES20RenderEngine::setupLayerBlackedOut() { 189 glBindTexture(GL_TEXTURE_2D, mProtectedTexName); 190 Texture texture(Texture::TEXTURE_2D, mProtectedTexName); 191 texture.setDimensions(1, 1); // FIXME: we should get that from somewhere 192 mState.setTexture(texture); 193} 194 195mat4 GLES20RenderEngine::setupColorTransform(const mat4& colorTransform) { 196 mat4 oldTransform = mState.getColorMatrix(); 197 mState.setColorMatrix(colorTransform); 198 return oldTransform; 199} 200 201void GLES20RenderEngine::disableTexturing() { 202 mState.disableTexture(); 203} 204 205void GLES20RenderEngine::disableBlending() { 206 glDisable(GL_BLEND); 207} 208 209 210void GLES20RenderEngine::bindImageAsFramebuffer(EGLImageKHR image, 211 uint32_t* texName, uint32_t* fbName, uint32_t* status) { 212 GLuint tname, name; 213 // turn our EGLImage into a texture 214 glGenTextures(1, &tname); 215 glBindTexture(GL_TEXTURE_2D, tname); 216 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image); 217 218 // create a Framebuffer Object to render into 219 glGenFramebuffers(1, &name); 220 glBindFramebuffer(GL_FRAMEBUFFER, name); 221 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tname, 0); 222 223 *status = glCheckFramebufferStatus(GL_FRAMEBUFFER); 224 *texName = tname; 225 *fbName = name; 226} 227 228void GLES20RenderEngine::unbindFramebuffer(uint32_t texName, uint32_t fbName) { 229 glBindFramebuffer(GL_FRAMEBUFFER, 0); 230 glDeleteFramebuffers(1, &fbName); 231 glDeleteTextures(1, &texName); 232} 233 234void GLES20RenderEngine::setupFillWithColor(float r, float g, float b, float a) { 235 mState.setPlaneAlpha(1.0f); 236 mState.setPremultipliedAlpha(true); 237 mState.setOpaque(false); 238 mState.setColor(r, g, b, a); 239 mState.disableTexture(); 240 glDisable(GL_BLEND); 241} 242 243void GLES20RenderEngine::drawMesh(const Mesh& mesh) { 244 245 ProgramCache::getInstance().useProgram(mState); 246 247 if (mesh.getTexCoordsSize()) { 248 glEnableVertexAttribArray(Program::texCoords); 249 glVertexAttribPointer(Program::texCoords, 250 mesh.getTexCoordsSize(), 251 GL_FLOAT, GL_FALSE, 252 mesh.getByteStride(), 253 mesh.getTexCoords()); 254 } 255 256 glVertexAttribPointer(Program::position, 257 mesh.getVertexSize(), 258 GL_FLOAT, GL_FALSE, 259 mesh.getByteStride(), 260 mesh.getPositions()); 261 262 glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount()); 263 264 if (mesh.getTexCoordsSize()) { 265 glDisableVertexAttribArray(Program::texCoords); 266 } 267} 268 269void GLES20RenderEngine::dump(String8& result) { 270 RenderEngine::dump(result); 271} 272 273// --------------------------------------------------------------------------- 274}; // namespace android 275// --------------------------------------------------------------------------- 276 277#if defined(__gl_h_) 278#error "don't include gl/gl.h in this file" 279#endif 280