gl.cpp revision 9660d304ae51a69509e5506e1fc80178025dee7c 
1/*
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#define LOG_TAG "GLES_CM"
18
19#include <ctype.h>
20#include <string.h>
21#include <errno.h>
22
23#include <sys/ioctl.h>
24
25#include <GLES/gl.h>
26#include <GLES/glext.h>
27
28#include <cutils/log.h>
29#include <cutils/properties.h>
30
31#include "hooks.h"
32#include "egl_impl.h"
33
34using namespace android;
35
36// ----------------------------------------------------------------------------
37// extensions for the framework
38// ----------------------------------------------------------------------------
39
40extern "C" {
41GL_API void GL_APIENTRY glColorPointerBounds(GLint size, GLenum type, GLsizei stride,
42        const GLvoid *ptr, GLsizei count);
43GL_API void GL_APIENTRY glNormalPointerBounds(GLenum type, GLsizei stride,
44        const GLvoid *pointer, GLsizei count);
45GL_API void GL_APIENTRY glTexCoordPointerBounds(GLint size, GLenum type,
46        GLsizei stride, const GLvoid *pointer, GLsizei count);
47GL_API void GL_APIENTRY glVertexPointerBounds(GLint size, GLenum type,
48        GLsizei stride, const GLvoid *pointer, GLsizei count);
49}
50
51void glColorPointerBounds(GLint size, GLenum type, GLsizei stride,
52        const GLvoid *ptr, GLsizei count) {
53    glColorPointer(size, type, stride, ptr);
54}
55void glNormalPointerBounds(GLenum type, GLsizei stride,
56        const GLvoid *pointer, GLsizei count) {
57    glNormalPointer(type, stride, pointer);
58}
59void glTexCoordPointerBounds(GLint size, GLenum type,
60        GLsizei stride, const GLvoid *pointer, GLsizei count) {
61    glTexCoordPointer(size, type, stride, pointer);
62}
63void glVertexPointerBounds(GLint size, GLenum type,
64        GLsizei stride, const GLvoid *pointer, GLsizei count) {
65    glVertexPointer(size, type, stride, pointer);
66}
67
68// ----------------------------------------------------------------------------
69// Actual GL entry-points
70// ----------------------------------------------------------------------------
71
72#undef API_ENTRY
73#undef CALL_GL_API
74#undef CALL_GL_API_RETURN
75
76#if USE_FAST_TLS_KEY
77
78    #define API_ENTRY(_api) __attribute__((naked)) _api
79
80    #define CALL_GL_API(_api, ...)                              \
81         asm volatile(                                          \
82            "mov   r12, #0xFFFF0FFF   \n"                       \
83            "ldr   r12, [r12, #-15]   \n"                       \
84            "ldr   r12, [r12, %[tls]] \n"                       \
85            "cmp   r12, #0            \n"                       \
86            "ldrne pc,  [r12, %[api]] \n"                       \
87            "bx    lr                 \n"                       \
88            :                                                   \
89            : [tls] "J"(TLS_SLOT_OPENGL_API*4),                 \
90              [api] "J"(__builtin_offsetof(gl_hooks_t, gl._api))    \
91            :                                                   \
92            );
93
94    #define CALL_GL_API_RETURN(_api, ...) \
95        CALL_GL_API(_api, __VA_ARGS__) \
96        return 0; // placate gcc's warnings. never reached.
97
98#else
99
100    #define API_ENTRY(_api) _api
101
102    #define CALL_GL_API(_api, ...)                                      \
103        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
104        _c->_api(__VA_ARGS__)
105
106    #define CALL_GL_API_RETURN(_api, ...)                               \
107        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl; \
108        return _c->_api(__VA_ARGS__)
109
110#endif
111
112
113extern "C" {
114#include "gl_api.in"
115#include "glext_api.in"
116}
117
118#undef API_ENTRY
119#undef CALL_GL_API
120#undef CALL_GL_API_RETURN
121
122
123/*
124 * These GL calls are special because they need to call into EGL to retrieve
125 * some informations before they can execute.
126 */
127
128
129void glEGLImageTargetTexture2DOES(GLenum target, GLeglImageOES image)
130{
131}
132
133void glEGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
134{
135}
136
137