diff options
Diffstat (limited to 'jni/feature_mos/src/mosaic_renderer/Renderer.cpp')
| -rwxr-xr-x | jni/feature_mos/src/mosaic_renderer/Renderer.cpp | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/jni/feature_mos/src/mosaic_renderer/Renderer.cpp b/jni/feature_mos/src/mosaic_renderer/Renderer.cpp new file mode 100755 index 000000000..b9938eb6b --- /dev/null +++ b/jni/feature_mos/src/mosaic_renderer/Renderer.cpp @@ -0,0 +1,226 @@ +/* + * Copyright (C) 2011 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. + */ + +#include "Renderer.h" + +#include "mosaic/Log.h" +#define LOG_TAG "Renderer" + +#include <GLES2/gl2ext.h> + +Renderer::Renderer() + : mGlProgram(0), + mInputTextureName(-1), + mInputTextureWidth(0), + mInputTextureHeight(0), + mSurfaceWidth(0), + mSurfaceHeight(0) +{ + InitializeGLContext(); +} + +Renderer::~Renderer() { +} + +GLuint Renderer::loadShader(GLenum shaderType, const char* pSource) { + GLuint shader = glCreateShader(shaderType); + if (shader) { + glShaderSource(shader, 1, &pSource, NULL); + glCompileShader(shader); + GLint compiled = 0; + glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled); + if (!compiled) { + GLint infoLen = 0; + glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen); + if (infoLen) { + char* buf = (char*) malloc(infoLen); + if (buf) { + glGetShaderInfoLog(shader, infoLen, NULL, buf); + LOGE("Could not compile shader %d:\n%s\n", + shaderType, buf); + free(buf); + } + glDeleteShader(shader); + shader = 0; + } + } + } + return shader; +} + +GLuint Renderer::createProgram(const char* pVertexSource, const char* pFragmentSource) +{ + GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource); + if (!vertexShader) + { + return 0; + } + + GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource); + if (!pixelShader) + { + return 0; + } + + GLuint program = glCreateProgram(); + if (program) + { + glAttachShader(program, vertexShader); + checkGlError("glAttachShader"); + glAttachShader(program, pixelShader); + checkGlError("glAttachShader"); + + glLinkProgram(program); + GLint linkStatus = GL_FALSE; + glGetProgramiv(program, GL_LINK_STATUS, &linkStatus); + + LOGI("Program Linked (%d)!", program); + + if (linkStatus != GL_TRUE) + { + GLint bufLength = 0; + glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength); + if (bufLength) + { + char* buf = (char*) malloc(bufLength); + if (buf) + { + glGetProgramInfoLog(program, bufLength, NULL, buf); + LOGE("Could not link program:\n%s\n", buf); + free(buf); + } + } + glDeleteProgram(program); + program = 0; + } + } + return program; +} + +// Set this renderer to use the default frame-buffer (screen) and +// set the viewport size to be the given width and height (pixels). +bool Renderer::SetupGraphics(int width, int height) +{ + bool succeeded = false; + do { + if (mGlProgram == 0) + { + if (!InitializeGLProgram()) + { + break; + } + } + glUseProgram(mGlProgram); + if (!checkGlError("glUseProgram")) break; + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + + mFrameBuffer = NULL; + mSurfaceWidth = width; + mSurfaceHeight = height; + + glViewport(0, 0, mSurfaceWidth, mSurfaceHeight); + if (!checkGlError("glViewport")) break; + succeeded = true; + } while (false); + + return succeeded; +} + + +// Set this renderer to use the specified FBO and +// set the viewport size to be the width and height of this FBO. +bool Renderer::SetupGraphics(FrameBuffer* buffer) +{ + bool succeeded = false; + do { + if (mGlProgram == 0) + { + if (!InitializeGLProgram()) + { + break; + } + } + glUseProgram(mGlProgram); + if (!checkGlError("glUseProgram")) break; + + glBindFramebuffer(GL_FRAMEBUFFER, buffer->GetFrameBufferName()); + + mFrameBuffer = buffer; + mSurfaceWidth = mFrameBuffer->GetWidth(); + mSurfaceHeight = mFrameBuffer->GetHeight(); + + glViewport(0, 0, mSurfaceWidth, mSurfaceHeight); + if (!checkGlError("glViewport")) break; + succeeded = true; + } while (false); + + return succeeded; +} + +bool Renderer::Clear(float r, float g, float b, float a) +{ + bool succeeded = false; + do { + bool rt = (mFrameBuffer == NULL)? + SetupGraphics(mSurfaceWidth, mSurfaceHeight) : + SetupGraphics(mFrameBuffer); + + if(!rt) + break; + + glClearColor(r, g, b, a); + glClear(GL_COLOR_BUFFER_BIT); + + succeeded = true; + } while (false); + return succeeded; + +} + +void Renderer::InitializeGLContext() +{ + if(mFrameBuffer != NULL) + { + delete mFrameBuffer; + mFrameBuffer = NULL; + } + + mInputTextureName = -1; + mInputTextureType = GL_TEXTURE_2D; + mGlProgram = 0; +} + +int Renderer::GetTextureName() +{ + return mInputTextureName; +} + +void Renderer::SetInputTextureName(GLuint textureName) +{ + mInputTextureName = textureName; +} + +void Renderer::SetInputTextureType(GLenum textureType) +{ + mInputTextureType = textureType; +} + +void Renderer::SetInputTextureDimensions(int width, int height) +{ + mInputTextureWidth = width; + mInputTextureHeight = height; +} |