blob: 79aa3cd59eeb1bd1ee1fa48ab73a81d664bd2dae [file] [log] [blame]
Mathias Agopianb1a39d62009-05-27 20:38:06 -07001/*
2 ** Copyright 2007, 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 <ctype.h>
18#include <string.h>
19#include <errno.h>
20
21#include <sys/ioctl.h>
22
23#include <GLES2/gl2.h>
24#include <GLES2/gl2ext.h>
25
26#include <cutils/log.h>
27#include <cutils/properties.h>
28
29#include "hooks.h"
30#include "egl_impl.h"
31
32using namespace android;
33
34// ----------------------------------------------------------------------------
35// Actual GL entry-points
36// ----------------------------------------------------------------------------
37
38#undef API_ENTRY
39#undef CALL_GL_API
40#undef CALL_GL_API_RETURN
41
Romain Guy761eaed2010-08-09 20:48:09 -070042#define DEBUG_CALL_GL_API 0
43
Mathias Agopianb1a39d62009-05-27 20:38:06 -070044#if USE_FAST_TLS_KEY
45
Mathias Agopian673d2db2009-10-14 02:39:53 -070046 #ifdef HAVE_ARM_TLS_REGISTER
47 #define GET_TLS(reg) \
48 "mrc p15, 0, " #reg ", c13, c0, 3 \n"
49 #else
50 #define GET_TLS(reg) \
51 "mov " #reg ", #0xFFFF0FFF \n" \
52 "ldr " #reg ", [" #reg ", #-15] \n"
53 #endif
54
Mathias Agopianb1a39d62009-05-27 20:38:06 -070055 #define API_ENTRY(_api) __attribute__((naked)) _api
56
57 #define CALL_GL_API(_api, ...) \
58 asm volatile( \
Mathias Agopian673d2db2009-10-14 02:39:53 -070059 GET_TLS(r12) \
Mathias Agopianb1a39d62009-05-27 20:38:06 -070060 "ldr r12, [r12, %[tls]] \n" \
61 "cmp r12, #0 \n" \
62 "ldrne pc, [r12, %[api]] \n" \
Mathias Agopian6f087122010-09-23 16:38:38 -070063 "mov r0, #0 \n" \
Mathias Agopianb1a39d62009-05-27 20:38:06 -070064 "bx lr \n" \
65 : \
66 : [tls] "J"(TLS_SLOT_OPENGL_API*4), \
Mathias Agopian618fa102009-10-14 02:06:37 -070067 [api] "J"(__builtin_offsetof(gl_hooks_t, gl._api)) \
Mathias Agopianb1a39d62009-05-27 20:38:06 -070068 : \
69 );
Mathias Agopian673d2db2009-10-14 02:39:53 -070070
Mathias Agopianb1a39d62009-05-27 20:38:06 -070071 #define CALL_GL_API_RETURN(_api, ...) \
72 CALL_GL_API(_api, __VA_ARGS__) \
73 return 0; // placate gcc's warnings. never reached.
74
75#else
76
77 #define API_ENTRY(_api) _api
78
Romain Guy761eaed2010-08-09 20:48:09 -070079#if DEBUG_CALL_GL_API
80
Mathias Agopianb1a39d62009-05-27 20:38:06 -070081 #define CALL_GL_API(_api, ...) \
Mathias Agopian618fa102009-10-14 02:06:37 -070082 gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
Romain Guy761eaed2010-08-09 20:48:09 -070083 _c->_api(__VA_ARGS__); \
84 GLenum status = GL_NO_ERROR; \
85 while ((status = glGetError()) != GL_NO_ERROR) { \
Steve Block9d453682011-12-20 16:23:08 +000086 ALOGD("[" #_api "] 0x%x", status); \
Romain Guy761eaed2010-08-09 20:48:09 -070087 }
88
89#else
90
91 #define CALL_GL_API(_api, ...) \
92 gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
93 _c->_api(__VA_ARGS__);
94
95#endif
96
Mathias Agopianb1a39d62009-05-27 20:38:06 -070097 #define CALL_GL_API_RETURN(_api, ...) \
Mathias Agopian618fa102009-10-14 02:06:37 -070098 gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
Mathias Agopianb1a39d62009-05-27 20:38:06 -070099 return _c->_api(__VA_ARGS__)
100
101#endif
102
103
104extern "C" {
105#include "gl2_api.in"
106#include "gl2ext_api.in"
107}
108
109#undef API_ENTRY
110#undef CALL_GL_API
111#undef CALL_GL_API_RETURN
112
Mathias Agopian48d438d2012-01-28 21:44:00 -0800113/*
114 * glGetString() is special because we expose some extensions in the wrapper
115 */
116
117extern "C" const GLubyte * __glGetString(GLenum name);
118
119const GLubyte * glGetString(GLenum name)
120{
121 const GLubyte * ret = egl_get_string_for_current_context(name);
122 if (ret == NULL) {
123 ret = __glGetString(name);
124 }
125 return ret;
126}
Mathias Agopianb1a39d62009-05-27 20:38:06 -0700127
128/*
129 * These GL calls are special because they need to EGL to retrieve some
130 * informations before they can execute.
131 */
132
133extern "C" void __glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image);
134extern "C" void __glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image);
135
136
137void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image)
138{
139 GLeglImageOES implImage =
140 (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
141 __glEGLImageTargetTexture2DOES(target, implImage);
142}
143
144void glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
145{
146 GLeglImageOES implImage =
147 (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
Mathias Agopian8fb47ec2010-03-29 15:12:19 -0700148 __glEGLImageTargetRenderbufferStorageOES(target, implImage);
Mathias Agopianb1a39d62009-05-27 20:38:06 -0700149}
150