/*
* 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 "EGLClientIface.h"
#include "HostConnection.h"
#include "GL2Encoder.h"
#include "GLES/gl.h"
#include "GLES/glext.h"
#include "ErrorLog.h"
#include "gralloc_cb.h"
#include "ThreadInfo.h"
#include "EGLImage.h"
//XXX: fix this macro to get the context from fast tls path
#define GET_CONTEXT GL2Encoder * ctx = getEGLThreadInfo()->hostConn->gl2Encoder();
#include "gl2_entry.cpp"
//The functions table
#include "gl2_ftable.h"
static EGLClient_eglInterface * s_egl = NULL;
static EGLClient_glesInterface * s_gl = NULL;
#define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
HostConnection *hostCon = HostConnection::get(); \
if (!hostCon) { \
ALOGE("egl: Failed to get host connection\n"); \
return ret; \
} \
renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
if (!rcEnc) { \
ALOGE("egl: Failed to get renderControl encoder context\n"); \
return ret; \
}
//GL extensions
void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
{
(void)self;
(void)target;
DBG("glEGLImageTargetTexture2DOES v2 target=%#x img=%p\n", target, img);
EGLImage_t *image = (EGLImage_t*)img;
GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
//TODO: check error - we don't have a way to set gl error
android_native_buffer_t* native_buffer = image->native_buffer;
if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
return;
}
if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
return;
}
GET_CONTEXT;
DEFINE_AND_VALIDATE_HOST_CONNECTION();
ctx->override2DTextureTarget(target);
ctx->associateEGLImage(target, hostImage);
rcEnc->rcBindTexture(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
ctx->restore2DTextureTarget(target);
}
else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
GET_CONTEXT;
ctx->override2DTextureTarget(target);
ctx->associateEGLImage(target, hostImage);
ctx->m_glEGLImageTargetTexture2DOES_enc(self, target, hostImage);
ctx->restore2DTextureTarget(target);
}
}
void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES image)
{
(void)self;
(void)target;
DBG("glEGLImageTargetRenderbufferStorageOES v2 image=%p\n", image);
//TODO: check error - we don't have a way to set gl error
android_native_buffer_t* native_buffer = (android_native_buffer_t*)image;
if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
return;
}
if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
return;
}
DEFINE_AND_VALIDATE_HOST_CONNECTION();
rcEnc->rcBindRenderbuffer(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
return;
}
void * getProcAddress(const char * procname)
{
// search in GL function table
for (int i=0; i<gl2_num_funcs; i++) {
if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
return gl2_funcs_by_name[i].proc;
}
}
return NULL;
}
void finish()
{
glFinish();
}
void getIntegerv(unsigned int pname, int* param)
{
glGetIntegerv((GLenum)pname, (GLint*)param);
}
const GLubyte *my_glGetString (void *self, GLenum name)
{
(void)self;
//see ref in https://www.khronos.org/opengles/sdk/docs/man
//name in glGetString can be one of the following five values
switch (name) {
case GL_VERSION:
case GL_VENDOR:
case GL_RENDERER:
case GL_SHADING_LANGUAGE_VERSION:
case GL_EXTENSIONS:
if (s_egl) {
return (const GLubyte*)s_egl->getGLString(name);
}
break;
default:
GET_CONTEXT;
ctx->setError(GL_INVALID_ENUM);
break;
}
return NULL;
}
void init()
{
GET_CONTEXT;
ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
ctx->glGetString = &my_glGetString;
}
extern "C" {
EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
{
s_egl = eglIface;
if (!s_gl) {
s_gl = new EGLClient_glesInterface();
s_gl->getProcAddress = getProcAddress;
s_gl->finish = finish;
s_gl->init = init;
s_gl->getIntegerv = getIntegerv;
}
return s_gl;
}
} //extern