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 "GLES/gl.h"
18
19 #include "EGLClientIface.h"
20 #include "EGLImage.h"
21 #include "GLES/glext.h"
22 #include "GLEncoder.h"
23 #include "HostConnection.h"
24 #include "ThreadInfo.h"
25
26 //XXX: fix this macro to get the context from fast tls path
27 #define GET_CONTEXT GLEncoder * ctx = getEGLThreadInfo()->hostConn->glEncoder();
28
29 #include "gl_entry.cpp"
30
31 //The functions table
32 #include "gl_ftable.h"
33
34 static EGLClient_eglInterface * s_egl = NULL;
35 static EGLClient_glesInterface * s_gl = NULL;
36
37 #define DEFINE_AND_VALIDATE_HOST_CONNECTION(ret) \
38 HostConnection* hostCon = HostConnection::get(); \
39 if (!hostCon) { \
40 ALOGE("egl: Failed to get host connection\n"); \
41 return ret; \
42 } \
43 renderControl_encoder_context_t* rcEnc = hostCon->rcEncoder(); \
44 if (!rcEnc) { \
45 ALOGE("egl: Failed to get renderControl encoder context\n"); \
46 return ret; \
47 } \
48 auto* grallocHelper = hostCon->grallocHelper(); \
49 if (!grallocHelper) { \
50 ALOGE("egl: Failed to get grallocHelper\n"); \
51 return ret; \
52 } \
53 auto* anwHelper = hostCon->anwHelper(); \
54 if (!anwHelper) { \
55 ALOGE("egl: Failed to get anwHelper\n"); \
56 return ret; \
57 }
58
59 //GL extensions
glEGLImageTargetTexture2DOES(void * self,GLenum target,GLeglImageOES img)60 void glEGLImageTargetTexture2DOES(void * self, GLenum target, GLeglImageOES img)
61 {
62 (void)self;
63
64 EGLImage_t *image = (EGLImage_t*)img;
65
66 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
67 DEFINE_AND_VALIDATE_HOST_CONNECTION();
68
69 EGLClientBuffer buffer = image->buffer;
70 if (!anwHelper->isValid(buffer)) {
71 ALOGE("Invalid native buffer.");
72 return;
73 }
74
75 GET_CONTEXT;
76 ctx->override2DTextureTarget(target);
77
78 const int hostHandle = anwHelper->getHostHandle(buffer, grallocHelper);
79 rcEnc->rcBindTexture(rcEnc, hostHandle);
80
81 ctx->restore2DTextureTarget();
82 } else if (image->target == EGL_GL_TEXTURE_2D_KHR) {
83 GET_CONTEXT;
84 ctx->override2DTextureTarget(target);
85 GLeglImageOES hostImage = reinterpret_cast<GLeglImageOES>((intptr_t)image->host_egl_image);
86 ctx->m_glEGLImageTargetTexture2DOES_enc(self, target, hostImage);
87 ctx->restore2DTextureTarget();
88 }
89 }
90
glEGLImageTargetRenderbufferStorageOES(void * self,GLenum target,GLeglImageOES img)91 void glEGLImageTargetRenderbufferStorageOES(void *self, GLenum target, GLeglImageOES img)
92 {
93 (void)self;
94 (void)target;
95
96 EGLImage_t *image = (EGLImage_t*)img;
97
98 if (image->target == EGL_NATIVE_BUFFER_ANDROID) {
99 DEFINE_AND_VALIDATE_HOST_CONNECTION();
100
101 EGLClientBuffer buffer = image->buffer;
102 if (!anwHelper->isValid(buffer)) {
103 ALOGE("Invalid native buffer.");
104 return;
105 }
106
107 const int hostHandle = anwHelper->getHostHandle(buffer, grallocHelper);
108 rcEnc->rcBindRenderbuffer(rcEnc, hostHandle);
109 } else {
110 //TODO
111 }
112
113 return;
114 }
115
getProcAddress(const char * procname)116 void * getProcAddress(const char * procname)
117 {
118 // search in GL function table
119 for (int i=0; i<gl_num_funcs; i++) {
120 if (!strcmp(gl_funcs_by_name[i].name, procname)) {
121 return gl_funcs_by_name[i].proc;
122 }
123 }
124 return NULL;
125 }
126
finish()127 void finish()
128 {
129 glFinish();
130 }
131
getIntegerv(unsigned int pname,int * param)132 void getIntegerv(unsigned int pname, int* param)
133 {
134 glGetIntegerv((GLenum)pname, (GLint*)param);
135 }
136
my_glGetString(void * self,GLenum name)137 const GLubyte *my_glGetString (void *self, GLenum name)
138 {
139 (void)self;
140
141 //see ref in https://www.khronos.org/opengles/sdk/docs/man
142 //name in glGetString can be one of the following five values
143 switch (name) {
144 case GL_VERSION:
145 case GL_VENDOR:
146 case GL_RENDERER:
147 case GL_SHADING_LANGUAGE_VERSION:
148 case GL_EXTENSIONS:
149 if (s_egl) {
150 return (const GLubyte*)s_egl->getGLString(name);
151 }
152 break;
153 default:
154 GET_CONTEXT;
155 ctx->setError(GL_INVALID_ENUM);
156 break;
157 }
158 return NULL;
159 }
160
init()161 void init()
162 {
163 GET_CONTEXT;
164 ctx->m_glEGLImageTargetTexture2DOES_enc = ctx->glEGLImageTargetTexture2DOES;
165 ctx->glEGLImageTargetTexture2DOES = &glEGLImageTargetTexture2DOES;
166 ctx->glEGLImageTargetRenderbufferStorageOES = &glEGLImageTargetRenderbufferStorageOES;
167 ctx->glGetString = &my_glGetString;
168 }
169
170 extern "C" {
init_emul_gles(EGLClient_eglInterface * eglIface)171 EGLClient_glesInterface * init_emul_gles(EGLClient_eglInterface *eglIface)
172 {
173 s_egl = eglIface;
174
175 if (!s_gl) {
176 s_gl = new EGLClient_glesInterface();
177 s_gl->getProcAddress = getProcAddress;
178 s_gl->finish = finish;
179 s_gl->init = init;
180 s_gl->getIntegerv = getIntegerv;
181 }
182
183 return s_gl;
184 }
185 } //extern
186
187
188