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* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#ifndef _GL_ENCODER_H_
#define _GL_ENCODER_H_
#include "gl_enc.h"
#include "GLClientState.h"
#include "FixedBuffer.h"
class GLEncoder : public gl_encoder_context_t {
GLEncoder(IOStream *stream);
virtual ~GLEncoder();
void setClientState(GLClientState *state) {
m_state = state;
void flush() { m_stream->flush(); }
size_t pixelDataSize(GLsizei width, GLsizei height, GLenum format, GLenum type, int pack);
GLClientState *m_state;
FixedBuffer m_fixedBuffer;
GLint *m_compressedTextureFormats;
GLint m_num_compressedTextureFormats;
GLint *getCompressedTextureFormats();
// original functions;
glGetIntegerv_client_proc_t m_glGetIntegerv_enc;
glGetFloatv_client_proc_t m_glGetFloatv_enc;
glGetFixedv_client_proc_t m_glGetFixedv_enc;
glGetBooleanv_client_proc_t m_glGetBooleanv_enc;
glPixelStorei_client_proc_t m_glPixelStorei_enc;
glVertexPointer_client_proc_t m_glVertexPointer_enc;
glNormalPointer_client_proc_t m_glNormalPointer_enc;
glColorPointer_client_proc_t m_glColorPointer_enc;
glPointSizePointerOES_client_proc_t m_glPointSizePointerOES_enc;
glTexCoordPointer_client_proc_t m_glTexCoordPointer_enc;
glClientActiveTexture_client_proc_t m_glClientActiveTexture_enc;
glBindBuffer_client_proc_t m_glBindBuffer_enc;
glEnableClientState_client_proc_t m_glEnableClientState_enc;
glDisableClientState_client_proc_t m_glDisableClientState_enc;
glDrawArrays_client_proc_t m_glDrawArrays_enc;
glDrawElements_client_proc_t m_glDrawElements_enc;
glFlush_client_proc_t m_glFlush_enc;
// statics
static void s_glGetIntegerv(void *self, GLenum pname, GLint *ptr);
static void s_glGetBooleanv(void *self, GLenum pname, GLboolean *ptr);
static void s_glGetFloatv(void *self, GLenum pname, GLfloat *ptr);
static void s_glGetFixedv(void *self, GLenum pname, GLfixed *ptr);
static void s_glFlush(void * self);
static GLubyte * s_glGetString(void *self, GLenum name);
static void s_glVertexPointer(void *self, int size, GLenum type, GLsizei stride, void *data);
static void s_glNormalPointer(void *self, GLenum type, GLsizei stride, void *data);
static void s_glColorPointer(void *self, int size, GLenum type, GLsizei stride, void *data);
static void s_glPointsizePointer(void *self, GLenum type, GLsizei stride, void *data);
static void s_glClientActiveTexture(void *self, GLenum texture);
static void s_glTexcoordPointer(void *self, int size, GLenum type, GLsizei stride, void *data);
static void s_glDisableClientState(void *self, GLenum state);
static void s_glEnableClientState(void *self, GLenum state);
static void s_glBindBuffer(void *self, GLenum target, GLuint id);
static void s_glDrawArrays(void *self, GLenum mode, GLint first, GLsizei count);
static void s_glDrawElements(void *self, GLenum mode, GLsizei count, GLenum type, void *indices);
static void s_glPixelStorei(void *self, GLenum param, GLint value);
void sendVertexData(unsigned first, unsigned count);
template <class T> void minmax(T *indices, int count, int *min, int *max) {
*min = -1;
*max = -1;
T *ptr = indices;
for (int i = 0; i < count; i++) {
if (*min == -1 || *ptr < *min) *min = *ptr;
if (*max == -1 || *ptr > *max) *max = *ptr;
template <class T> void shiftIndices(T *indices, int count, int offset) {
T *ptr = indices;
for (int i = 0; i < count; i++) {
*ptr += offset;
template <class T> void shiftIndices(T *src, T *dst, int count, int offset)
for (int i = 0; i < count; i++) {
*dst = *src + offset;