| #include "GL2Decoder.h" |
| #include <EGL/egl.h> |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| |
| |
| GL2Decoder::GL2Decoder() |
| { |
| m_contextData = NULL; |
| m_GL2library = NULL; |
| } |
| |
| GL2Decoder::~GL2Decoder() |
| { |
| delete m_GL2library; |
| } |
| |
| void *GL2Decoder::s_getProc(const char *name, void *userData) |
| { |
| GL2Decoder *ctx = (GL2Decoder *) 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 GL2Decoder::initGL(get_proc_func_t getProcFunc, void *getProcFuncData) |
| { |
| if (getProcFunc == NULL) { |
| const char *libname = GLES2_LIBNAME; |
| if (getenv(GLES2_LIBNAME_VAR) != NULL) { |
| libname = getenv(GLES2_LIBNAME_VAR); |
| } |
| |
| m_GL2library = osUtils::dynLibrary::open(libname); |
| if (m_GL2library == NULL) { |
| fprintf(stderr, "Couldn't find %s \n", libname); |
| return -1; |
| } |
| this->initDispatchByName(s_getProc, this); |
| } else { |
| this->initDispatchByName(getProcFunc, getProcFuncData); |
| } |
| |
| set_glGetCompressedTextureFormats(s_glGetCompressedTextureFormats); |
| set_glVertexAttribPointerData(s_glVertexAttribPointerData); |
| set_glVertexAttribPointerOffset(s_glVertexAttribPointerOffset); |
| |
| set_glDrawElementsOffset(s_glDrawElementsOffset); |
| set_glDrawElementsData(s_glDrawElementsData); |
| set_glShaderString(s_glShaderString); |
| return 0; |
| |
| } |
| |
| void GL2Decoder::s_glGetCompressedTextureFormats(void *self, int count, GLint *formats) |
| { |
| GL2Decoder *ctx = (GL2Decoder *) self; |
| |
| int nFormats; |
| ctx->glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &nFormats); |
| if (nFormats > count) { |
| fprintf(stderr, "GetCompressedTextureFormats: The requested number of formats does not match the number that is reported by OpenGL\n"); |
| } else { |
| ctx->glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats); |
| } |
| } |
| |
| void GL2Decoder::s_glVertexAttribPointerData(void *self, GLuint indx, GLint size, GLenum type, |
| GLboolean normalized, GLsizei stride, void * data, GLuint datalen) |
| { |
| GL2Decoder *ctx = (GL2Decoder *) 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 GL2Decoder::s_glVertexAttribPointerOffset(void *self, GLuint indx, GLint size, GLenum type, |
| GLboolean normalized, GLsizei stride, GLuint data) |
| { |
| GL2Decoder *ctx = (GL2Decoder *) self; |
| ctx->glVertexAttribPointer(indx, size, type, normalized, stride, (GLvoid *)data); |
| } |
| |
| |
| void GL2Decoder::s_glDrawElementsData(void *self, GLenum mode, GLsizei count, GLenum type, void * data, GLuint datalen) |
| { |
| GL2Decoder *ctx = (GL2Decoder *)self; |
| ctx->glDrawElements(mode, count, type, data); |
| } |
| |
| |
| void GL2Decoder::s_glDrawElementsOffset(void *self, GLenum mode, GLsizei count, GLenum type, GLuint offset) |
| { |
| GL2Decoder *ctx = (GL2Decoder *)self; |
| ctx->glDrawElements(mode, count, type, (void *)offset); |
| } |
| |
| void GL2Decoder::s_glShaderString(void *self, GLuint shader, const GLchar* string, GLsizei len) |
| { |
| GL2Decoder *ctx = (GL2Decoder *)self; |
| ctx->glShaderSource(shader, 1, &string, NULL); |
| } |