2 * Copyright 2013 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include <GLES/glext.h>
22 #include <utils/String8.h>
23 #include <cutils/compiler.h>
24 #include <gui/ISurfaceComposer.h>
26 #include "GLES11RenderEngine.h"
30 // ---------------------------------------------------------------------------
32 // ---------------------------------------------------------------------------
34 GLES11RenderEngine::GLES11RenderEngine() {
36 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
37 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
39 glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
40 glPixelStorei(GL_PACK_ALIGNMENT, 4);
41 glEnableClientState(GL_VERTEX_ARRAY);
42 glShadeModel(GL_FLAT);
44 glDisable(GL_CULL_FACE);
47 inline uint16_t operator() (int r, int g, int b) const {
48 return (r<<11)|(g<<5)|b;
52 const uint16_t protTexData[] = { 0 };
53 glGenTextures(1, &mProtectedTexName);
54 glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
55 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
56 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
57 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
58 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
59 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0,
60 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
63 GLES11RenderEngine::~GLES11RenderEngine() {
67 size_t GLES11RenderEngine::getMaxTextureSize() const {
68 return mMaxTextureSize;
71 size_t GLES11RenderEngine::getMaxViewportDims() const {
73 mMaxViewportDims[0] < mMaxViewportDims[1] ?
74 mMaxViewportDims[0] : mMaxViewportDims[1];
77 void GLES11RenderEngine::setViewportAndProjection(
78 size_t vpw, size_t vph, Rect sourceCrop, size_t hwh, bool yswap,
79 Transform::orientation_flags rotation) {
80 glViewport(0, 0, vpw, vph);
81 glMatrixMode(GL_PROJECTION);
84 size_t l = sourceCrop.left;
85 size_t r = sourceCrop.right;
87 // In GL, (0, 0) is the bottom-left corner, so flip y coordinates
88 size_t t = hwh - sourceCrop.top;
89 size_t b = hwh - sourceCrop.bottom;
92 glOrthof(l, r, t, b, 0, 1);
94 glOrthof(l, r, b, t, 0, 1);
98 case Transform::ROT_0:
100 case Transform::ROT_90:
101 glRotatef(90, 0, 0, 1);
103 case Transform::ROT_180:
104 glRotatef(180, 0, 0, 1);
106 case Transform::ROT_270:
107 glRotatef(270, 0, 0, 1);
113 glMatrixMode(GL_MODELVIEW);
116 void GLES11RenderEngine::setupLayerBlending(
117 bool premultipliedAlpha, bool opaque, int alpha) {
123 if (CC_UNLIKELY(alpha < 0xFF)) {
124 // Cv = premultiplied ? Cs*alpha : Cs
125 // Av = !opaque ? As*alpha : As
126 combineRGB = premultipliedAlpha ? GL_MODULATE : GL_REPLACE;
127 combineAlpha = !opaque ? GL_MODULATE : GL_REPLACE;
128 src0Alpha = GL_CONSTANT;
129 envColor[0] = alpha * (1.0f / 255.0f);
132 // Av = opaque ? 1.0 : As
133 combineRGB = GL_REPLACE;
134 combineAlpha = GL_REPLACE;
135 src0Alpha = opaque ? GL_CONSTANT : GL_TEXTURE;
139 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
140 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, combineRGB);
141 glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
142 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
143 if (combineRGB == GL_MODULATE) {
144 glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_CONSTANT);
145 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
147 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, combineAlpha);
148 glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_ALPHA, src0Alpha);
149 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
150 if (combineAlpha == GL_MODULATE) {
151 glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_TEXTURE);
152 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
154 if (combineRGB == GL_MODULATE || src0Alpha == GL_CONSTANT) {
155 envColor[1] = envColor[0];
156 envColor[2] = envColor[0];
157 envColor[3] = envColor[0];
158 glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, envColor);
161 if (alpha < 0xFF || !opaque) {
163 glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA,
164 GL_ONE_MINUS_SRC_ALPHA);
170 void GLES11RenderEngine::setupDimLayerBlending(int alpha) {
171 glDisable(GL_TEXTURE_EXTERNAL_OES);
172 glDisable(GL_TEXTURE_2D);
177 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
179 glColor4f(0, 0, 0, alpha/255.0f);
182 void GLES11RenderEngine::setupLayerTexturing(const Texture& texture) {
183 GLuint target = texture.getTextureTarget();
184 glBindTexture(target, texture.getTextureName());
185 GLenum filter = GL_NEAREST;
186 if (texture.getFiltering()) {
189 glTexParameterx(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
190 glTexParameterx(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
191 glTexParameterx(target, GL_TEXTURE_MAG_FILTER, filter);
192 glTexParameterx(target, GL_TEXTURE_MIN_FILTER, filter);
193 glMatrixMode(GL_TEXTURE);
194 glLoadMatrixf(texture.getMatrix().asArray());
195 glMatrixMode(GL_MODELVIEW);
196 glDisable(GL_TEXTURE_2D);
197 glEnable(GL_TEXTURE_EXTERNAL_OES);
200 void GLES11RenderEngine::setupLayerBlackedOut() {
201 glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
202 glMatrixMode(GL_TEXTURE);
204 glMatrixMode(GL_MODELVIEW);
205 glDisable(GL_TEXTURE_EXTERNAL_OES);
206 glEnable(GL_TEXTURE_2D);
209 void GLES11RenderEngine::disableTexturing() {
210 glDisable(GL_TEXTURE_EXTERNAL_OES);
211 glDisable(GL_TEXTURE_2D);
214 void GLES11RenderEngine::disableBlending() {
218 void GLES11RenderEngine::bindImageAsFramebuffer(EGLImageKHR image,
219 uint32_t* texName, uint32_t* fbName, uint32_t* status) {
221 // turn our EGLImage into a texture
222 glGenTextures(1, &tname);
223 glBindTexture(GL_TEXTURE_2D, tname);
224 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
226 // create a Framebuffer Object to render into
227 glGenFramebuffersOES(1, &name);
228 glBindFramebufferOES(GL_FRAMEBUFFER_OES, name);
229 glFramebufferTexture2DOES(GL_FRAMEBUFFER_OES,
230 GL_COLOR_ATTACHMENT0_OES, GL_TEXTURE_2D, tname, 0);
232 *status = glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES);
237 void GLES11RenderEngine::unbindFramebuffer(uint32_t texName, uint32_t fbName) {
238 glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
239 glDeleteFramebuffersOES(1, &fbName);
240 glDeleteTextures(1, &texName);
243 void GLES11RenderEngine::setupFillWithColor(float r, float g, float b, float a) {
244 glColor4f(r, g, b, a);
245 glDisable(GL_TEXTURE_EXTERNAL_OES);
246 glDisable(GL_TEXTURE_2D);
250 void GLES11RenderEngine::drawMesh(const Mesh& mesh) {
251 if (mesh.getTexCoordsSize()) {
252 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
253 glTexCoordPointer(mesh.getTexCoordsSize(),
255 mesh.getByteStride(),
256 mesh.getTexCoords());
259 glVertexPointer(mesh.getVertexSize(),
261 mesh.getByteStride(),
262 mesh.getPositions());
264 glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
266 if (mesh.getTexCoordsSize()) {
267 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
271 void GLES11RenderEngine::beginGroup(const mat4& /*colorTransform*/) {
272 // doesn't do anything in GLES 1.1
275 void GLES11RenderEngine::endGroup() {
276 // doesn't do anything in GLES 1.1
279 void GLES11RenderEngine::dump(String8& result) {
280 RenderEngine::dump(result);
283 // ---------------------------------------------------------------------------
284 }; // namespace android
285 // ---------------------------------------------------------------------------
287 #if defined(__gl2_h_)
288 #error "don't include gl2/gl2.h in this file"