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.
19 #include <utils/String8.h>
20 #include <cutils/compiler.h>
22 #include "GLES11RenderEngine.h"
23 #include "GLExtensions.h"
26 // ---------------------------------------------------------------------------
28 // ---------------------------------------------------------------------------
30 GLES11RenderEngine::GLES11RenderEngine() {
32 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
33 glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
35 glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
36 glPixelStorei(GL_PACK_ALIGNMENT, 4);
37 glEnableClientState(GL_VERTEX_ARRAY);
38 glShadeModel(GL_FLAT);
40 glDisable(GL_CULL_FACE);
43 inline uint16_t operator() (int r, int g, int b) const {
44 return (r<<11)|(g<<5)|b;
48 const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) };
49 glGenTextures(1, &mProtectedTexName);
50 glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
51 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
52 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
53 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
54 glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
55 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0,
56 GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
59 GLES11RenderEngine::~GLES11RenderEngine() {
63 size_t GLES11RenderEngine::getMaxTextureSize() const {
64 return mMaxTextureSize;
67 size_t GLES11RenderEngine::getMaxViewportDims() const {
69 mMaxViewportDims[0] < mMaxViewportDims[1] ?
70 mMaxViewportDims[0] : mMaxViewportDims[1];
73 void GLES11RenderEngine::setViewportAndProjection(
74 size_t vpw, size_t vph, size_t w, size_t h, bool yswap) {
75 glViewport(0, 0, vpw, vph);
76 glMatrixMode(GL_PROJECTION);
78 // put the origin in the left-bottom corner
79 if (yswap) glOrthof(0, w, h, 0, 0, 1);
80 else glOrthof(0, w, 0, h, 0, 1);
81 glMatrixMode(GL_MODELVIEW);
84 void GLES11RenderEngine::setupLayerBlending(
85 bool premultipliedAlpha, bool opaque, int alpha) {
91 if (CC_UNLIKELY(alpha < 0xFF)) {
92 // Cv = premultiplied ? Cs*alpha : Cs
93 // Av = !opaque ? As*alpha : As
94 combineRGB = premultipliedAlpha ? GL_MODULATE : GL_REPLACE;
95 combineAlpha = !opaque ? GL_MODULATE : GL_REPLACE;
96 src0Alpha = GL_CONSTANT;
97 envColor[0] = alpha * (1.0f / 255.0f);
100 // Av = opaque ? 1.0 : As
101 combineRGB = GL_REPLACE;
102 combineAlpha = GL_REPLACE;
103 src0Alpha = opaque ? GL_CONSTANT : GL_TEXTURE;
107 glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
108 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, combineRGB);
109 glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_TEXTURE);
110 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
111 if (combineRGB == GL_MODULATE) {
112 glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_CONSTANT);
113 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
115 glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, combineAlpha);
116 glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_ALPHA, src0Alpha);
117 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
118 if (combineAlpha == GL_MODULATE) {
119 glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_TEXTURE);
120 glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
122 if (combineRGB == GL_MODULATE || src0Alpha == GL_CONSTANT) {
123 envColor[1] = envColor[0];
124 envColor[2] = envColor[0];
125 envColor[3] = envColor[0];
126 glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, envColor);
129 if (alpha < 0xFF || !opaque) {
131 glBlendFunc(premultipliedAlpha ? GL_ONE : GL_SRC_ALPHA,
132 GL_ONE_MINUS_SRC_ALPHA);
138 void GLES11RenderEngine::setupDimLayerBlending(int alpha) {
139 glDisable(GL_TEXTURE_EXTERNAL_OES);
140 glDisable(GL_TEXTURE_2D);
145 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
147 glColor4f(0, 0, 0, alpha/255.0f);
150 void GLES11RenderEngine::setupLayerTexturing(size_t textureName,
151 bool useFiltering, const float* textureMatrix) {
152 glBindTexture(GL_TEXTURE_EXTERNAL_OES, textureName);
153 GLenum filter = GL_NEAREST;
157 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
158 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
159 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, filter);
160 glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, filter);
161 glMatrixMode(GL_TEXTURE);
162 glLoadMatrixf(textureMatrix);
163 glMatrixMode(GL_MODELVIEW);
164 glDisable(GL_TEXTURE_2D);
165 glEnable(GL_TEXTURE_EXTERNAL_OES);
168 void GLES11RenderEngine::setupLayerBlackedOut() {
169 glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
170 glMatrixMode(GL_TEXTURE);
172 glMatrixMode(GL_MODELVIEW);
173 glDisable(GL_TEXTURE_EXTERNAL_OES);
174 glEnable(GL_TEXTURE_2D);
177 void GLES11RenderEngine::disableTexturing() {
178 glDisable(GL_TEXTURE_EXTERNAL_OES);
179 glDisable(GL_TEXTURE_2D);
182 void GLES11RenderEngine::disableBlending() {
186 void GLES11RenderEngine::fillWithColor(const Mesh& mesh, float r, float g, float b, float a) {
187 glColor4f(r, g, b, a);
188 glDisable(GL_TEXTURE_EXTERNAL_OES);
189 glDisable(GL_TEXTURE_2D);
192 glVertexPointer(mesh.getVertexSize(),
194 mesh.getByteStride(),
197 glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
200 void GLES11RenderEngine::drawMesh(const Mesh& mesh) {
201 if (mesh.getTexCoordsSize()) {
202 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
203 glTexCoordPointer(mesh.getTexCoordsSize(),
205 mesh.getByteStride(),
206 mesh.getTexCoords());
209 glVertexPointer(mesh.getVertexSize(),
211 mesh.getByteStride(),
214 glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
216 if (mesh.getTexCoordsSize()) {
217 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
221 void GLES11RenderEngine::dump(String8& result) {
222 const GLExtensions& extensions(GLExtensions::getInstance());
223 result.appendFormat("GLES: %s, %s, %s\n",
224 extensions.getVendor(),
225 extensions.getRenderer(),
226 extensions.getVersion());
227 result.appendFormat("%s\n", extensions.getExtension());
230 // ---------------------------------------------------------------------------
231 }; // namespace android
232 // ---------------------------------------------------------------------------