src/type3_AndroidCloud/anbox-master/android/opengl/system/GLESv2/gl2.cpp

   1 /*
   2 * Copyright 2011 The Android Open Source Project
   3 *
   4 * Licensed under the Apache License, Version 2.0 (the "License");
   5 * you may not use this file except in compliance with the License.
   6 * You may obtain a copy of the License at
   7 *
   8 * http://www.apache.org/licenses/LICENSE-2.0
   9 *
  10 * Unless required by applicable law or agreed to in writing, software
  11 * distributed under the License is distributed on an "AS IS" BASIS,
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 * See the License for the specific language governing permissions and
  14 * limitations under the License.
  15 */
  16
  17 #include "EGLClientIface.h"
  18 #include "HostConnection.h"
  19 #include "GL2Encoder.h"
  20 #include "GLES/gl.h"
  21 #include "GLES/glext.h"
  22 #include "ErrorLog.h"
  23 #include "gralloc_cb.h"
  24 #include "ThreadInfo.h"
  25 #include "EGLImage.h"
  26
  27 //XXX: fix this macro to get the context from fast tls path
  28 #define GET_CONTEXT GL2Encoder * ctx = getEGLThreadInfo()->hostConn->gl2Encoder();
  29
  30 #include "gl2_entry.cpp"
  31
  32 //The functions table
  33 #include "gl2_ftable.h"
  34
  35
  36 static EGLClient_eglInterface * s_egl = NULL;
  37 static EGLClient_glesInterface * s_gl = NULL;
  38
  39 #define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
  40     HostConnection *hostCon = HostConnection::get(); \
  41     if (!hostCon) { \
  42         ALOGE("egl: Failed to get host connection\n"); \
  43         return ret; \
  44     } \
  45     renderControl_encoder_context_t *rcEnc = hostCon->rcEncoder(); \
  46     if (!rcEnc) { \
  47         ALOGE("egl: Failed to get renderControl encoder context\n"); \
  48         return ret; \
  49     }
  50
  51 //GL extensions
  52 void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
  53 {
  54     (void)self;
  55     (void)target;
  56
  57     DBG("glEGLImageTargetTexture2DOES v2 target=%#x img=%p\n", target, img);
  58
  59     EGLImage_t *image = (EGLImage_t*)img;
  60
  61     if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
  62         //TODO: check error - we don't have a way to set gl error
  63         android_native_buffer_t* native_buffer = image->native_buffer;
  64
  65         if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
  66             return;
  67         }
  68
  69         if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
  70             return;
  71         }
  72
  73         GET_CONTEXT;
  74         DEFINE_AND_VALIDATE_HOST_CONNECTION();
  75
  76         ctx->override2DTextureTarget(target);
  77         rcEnc->rcBindTexture(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
  78         ctx->restore2DTextureTarget();
  79     }
  80     else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
  81         GET_CONTEXT;
  82         ctx->override2DTextureTarget(target);
  83         GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
  84         ctx->m_glEGLImageTargetTexture2DOES_enc(self, target, hostImage);
  85         ctx->restore2DTextureTarget();
  86     }
  87 }
  88
  89 void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES image)
  90 {
  91     (void)self;
  92     (void)target;
  93
  94     DBG("glEGLImageTargetRenderbufferStorageOES v2 image=%p\n", image);
  95     //TODO: check error - we don't have a way to set gl error
  96     android_native_buffer_t* native_buffer = (android_native_buffer_t*)image;
  97
  98     if (native_buffer->common.magic != ANDROID_NATIVE_BUFFER_MAGIC) {
  99         return;
 100     }
 101
 102     if (native_buffer->common.version != sizeof(android_native_buffer_t)) {
 103         return;
 104     }
 105
 106     DEFINE_AND_VALIDATE_HOST_CONNECTION();
 107     rcEnc->rcBindRenderbuffer(rcEnc, ((cb_handle_t *)(native_buffer->handle))->hostHandle);
 108
 109     return;
 110 }
 111
 112 void * getProcAddress(const char * procname)
 113 {
 114     // search in GL function table
 115     for (int i=0; i<gl2_num_funcs; i++) {
 116         if (!strcmp(gl2_funcs_by_name[i].name, procname)) {
 117             return gl2_funcs_by_name[i].proc;
 118         }
 119     }
 120     return NULL;
 121 }
 122
 123 void finish()
 124 {
 125     glFinish();
 126 }
 127
 128 const GLubyte *my_glGetString (void *self, GLenum name)
 129 {
 130     (void)self;
 131
 132     //see ref in https://www.khronos.org/opengles/sdk/docs/man
 133     //name in glGetString can be one of the following five values
 134     switch (name) {
 135         case GL_VERSION:
 136         case GL_VENDOR:
 137         case GL_RENDERER:
 138         case GL_SHADING_LANGUAGE_VERSION:
 139         case GL_EXTENSIONS:
 140             if (s_egl) {
 141                 return (const GLubyte*)s_egl->getGLString(name);
 142             }
 143             break;
 144         default:
 145             GET_CONTEXT;
 146             ctx->setError(GL_INVALID_ENUM);
 147             break;
 148     }
 149     return NULL;
 150 }
 151
 152 void init()
 153 {
 154     GET_CONTEXT;
 155     ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
 156     ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
 157     ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
 158     ctx->glGetString = &my_glGetString;
 159 }
 160
 161 extern "C" {
 162 EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
 163 {
 164     s_egl = eglIface;
 165
 166     if (!s_gl) {
 167         s_gl = new EGLClient_glesInterface();
 168         s_gl->getProcAddress = getProcAddress;
 169         s_gl->finish = finish;
 170         s_gl->init = init;
 171     }
 172
 173     return s_gl;
 174 }
 175 } //extern
 176
 177