| /* |
| * Copyright 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 "GLESv2Decoder.h" |
| |
| #include <EGL/egl.h> |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| |
| static inline void* SafePointerFromUInt(GLuint value) { |
| return (void*)(uintptr_t)value; |
| } |
| |
| GLESv2Decoder::GLESv2Decoder() |
| { |
| m_contextData = NULL; |
| m_GL2library = NULL; |
| } |
| |
| GLESv2Decoder::~GLESv2Decoder() |
| { |
| delete m_GL2library; |
| } |
| |
| void *GLESv2Decoder::s_getProc(const char *name, void *userData) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *) userData; |
| |
| if (ctx == NULL || ctx->m_GL2library == NULL) { |
| return NULL; |
| } |
| |
| void *func = NULL; |
| #ifdef USE_EGL_GETPROCADDRESS |
| func = (void *) eglGetProcAddress(name); |
| #endif |
| if (func == NULL) { |
| func = (void *) ctx->m_GL2library->findSymbol(name); |
| } |
| return func; |
| } |
| |
| int GLESv2Decoder::initGL(get_proc_func_t getProcFunc, void *getProcFuncData) |
| { |
| this->initDispatchByName(getProcFunc, getProcFuncData); |
| |
| glGetCompressedTextureFormats = s_glGetCompressedTextureFormats; |
| glVertexAttribPointerData = s_glVertexAttribPointerData; |
| glVertexAttribPointerOffset = s_glVertexAttribPointerOffset; |
| |
| glDrawElementsOffset = s_glDrawElementsOffset; |
| glDrawElementsData = s_glDrawElementsData; |
| glShaderString = s_glShaderString; |
| glFinishRoundTrip = s_glFinishRoundTrip; |
| return 0; |
| |
| } |
| |
| int GLESv2Decoder::s_glFinishRoundTrip(void *self) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *)self; |
| ctx->glFinish(); |
| return 0; |
| } |
| |
| void GLESv2Decoder::s_glGetCompressedTextureFormats(void *self, int count, GLint *formats) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *) self; |
| |
| int nFormats; |
| ctx->glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &nFormats); |
| if (nFormats > count) { |
| fprintf(stderr, "%s: GetCompressedTextureFormats: The requested number of formats does not match the number that is reported by OpenGL\n", __FUNCTION__); |
| } else { |
| ctx->glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| } |
| } |
| |
| void GLESv2Decoder::s_glVertexAttribPointerData(void *self, GLuint indx, GLint size, GLenum type, |
| GLboolean normalized, GLsizei stride, void * data, GLuint datalen) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *) self; |
| if (ctx->m_contextData != NULL) { |
| ctx->m_contextData->storePointerData(indx, data, datalen); |
| // note - the stride of the data is always zero when it comes out of the codec. |
| // See gl2.attrib for the packing function call. |
| ctx->glVertexAttribPointer(indx, size, type, normalized, 0, ctx->m_contextData->pointerData(indx)); |
| } |
| } |
| |
| void GLESv2Decoder::s_glVertexAttribPointerOffset(void *self, GLuint indx, GLint size, GLenum type, |
| GLboolean normalized, GLsizei stride, GLuint data) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *) self; |
| ctx->glVertexAttribPointer(indx, size, type, normalized, stride, SafePointerFromUInt(data)); |
| } |
| |
| |
| void GLESv2Decoder::s_glDrawElementsData(void *self, GLenum mode, GLsizei count, GLenum type, void * data, GLuint datalen) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *)self; |
| ctx->glDrawElements(mode, count, type, data); |
| } |
| |
| |
| void GLESv2Decoder::s_glDrawElementsOffset(void *self, GLenum mode, GLsizei count, GLenum type, GLuint offset) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *)self; |
| ctx->glDrawElements(mode, count, type, SafePointerFromUInt(offset)); |
| } |
| |
| void GLESv2Decoder::s_glShaderString(void *self, GLuint shader, const GLchar* string, GLsizei len) |
| { |
| GLESv2Decoder *ctx = (GLESv2Decoder *)self; |
| ctx->glShaderSource(shader, 1, &string, NULL); |
| } |