5b3b35296e
This optimization is currently disabled until Launcher is modified to take advantage of it. The optimization can be enabled by turning on RENDER_LAYERS_AS_REGIONS in the OpenGLRenderer.h file. Change-Id: I2fdf59d0f4dc690a3d7f712173ab8db3848b27b1
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#define LOG_TAG "OpenGLRenderer"
|
|
|
|
#include "Caches.h"
|
|
|
|
namespace android {
|
|
|
|
#ifdef USE_OPENGL_RENDERER
|
|
using namespace uirenderer;
|
|
ANDROID_SINGLETON_STATIC_INSTANCE(Caches);
|
|
#endif
|
|
|
|
namespace uirenderer {
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Constructors/destructor
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
Caches::Caches(): Singleton<Caches>(), blend(false), lastSrcMode(GL_ZERO),
|
|
lastDstMode(GL_ZERO), currentProgram(NULL) {
|
|
GLint maxTextureUnits;
|
|
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
|
|
if (maxTextureUnits < REQUIRED_TEXTURE_UNITS_COUNT) {
|
|
LOGW("At least %d texture units are required!", REQUIRED_TEXTURE_UNITS_COUNT);
|
|
}
|
|
|
|
glGenBuffers(1, &meshBuffer);
|
|
glBindBuffer(GL_ARRAY_BUFFER, meshBuffer);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(gMeshVertices), gMeshVertices, GL_STATIC_DRAW);
|
|
|
|
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
|
|
|
|
mCurrentBuffer = meshBuffer;
|
|
mRegionMesh = NULL;
|
|
}
|
|
|
|
Caches::~Caches() {
|
|
delete[] mRegionMesh;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// VBO
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
void Caches::bindMeshBuffer() {
|
|
bindMeshBuffer(meshBuffer);
|
|
}
|
|
|
|
void Caches::bindMeshBuffer(const GLuint buffer) {
|
|
if (mCurrentBuffer != buffer) {
|
|
glBindBuffer(GL_ARRAY_BUFFER, buffer);
|
|
mCurrentBuffer = buffer;
|
|
}
|
|
}
|
|
|
|
void Caches::unbindMeshBuffer() {
|
|
if (mCurrentBuffer) {
|
|
glBindBuffer(GL_ARRAY_BUFFER, 0);
|
|
mCurrentBuffer = 0;
|
|
}
|
|
}
|
|
|
|
TextureVertex* Caches::getRegionMesh() {
|
|
// Create the mesh, 2 triangles and 4 vertices per rectangle in the region
|
|
if (!mRegionMesh) {
|
|
mRegionMesh = new TextureVertex[REGION_MESH_QUAD_COUNT * 4];
|
|
|
|
uint16_t* regionIndices = new uint16_t[REGION_MESH_QUAD_COUNT * 6];
|
|
for (int i = 0; i < REGION_MESH_QUAD_COUNT; i++) {
|
|
uint16_t quad = i * 4;
|
|
int index = i * 6;
|
|
regionIndices[index ] = quad; // top-left
|
|
regionIndices[index + 1] = quad + 1; // top-right
|
|
regionIndices[index + 2] = quad + 2; // bottom-left
|
|
regionIndices[index + 3] = quad + 2; // bottom-left
|
|
regionIndices[index + 4] = quad + 1; // top-right
|
|
regionIndices[index + 5] = quad + 3; // bottom-right
|
|
}
|
|
|
|
glGenBuffers(1, &mRegionMeshIndices);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, REGION_MESH_QUAD_COUNT * 6 * sizeof(uint16_t),
|
|
regionIndices, GL_STATIC_DRAW);
|
|
|
|
delete[] regionIndices;
|
|
} else {
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mRegionMeshIndices);
|
|
}
|
|
|
|
return mRegionMesh;
|
|
}
|
|
|
|
}; // namespace uirenderer
|
|
}; // namespace android
|