1 /*
2 **
3 ** Copyright 2009, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #ifndef ANDROID_OPENGLES_COPYBIT_H
19 #define ANDROID_OPENGLES_COPYBIT_H
20
21 #include <stdlib.h>
22
23 #include <GLES/gl.h>
24
25 #include "TextureObjectManager.h"
26 namespace android {
27 #ifdef LIBAGL_USE_GRALLOC_COPYBITS
28
29 bool drawTexiOESWithCopybit_impl(GLint x, GLint y, GLint z,
30 GLint w, GLint h, ogles_context_t* c);
31
32 bool drawTriangleFanWithCopybit_impl(ogles_context_t* c, GLint first,
33 GLsizei count);
34
copybitQuickCheckContext(ogles_context_t * c)35 inline bool copybitQuickCheckContext(ogles_context_t* c) {
36 return c->copybits.drawSurfaceBuffer != 0
37 && c->rasterizer.state.enabled_tmu == 1
38 && c->textures.tmu[0].texture->try_copybit;
39 }
40
41 /*
42 * Tries to draw a drawTexiOES using copybit hardware.
43 * Returns true if successful.
44 */
drawTexiOESWithCopybit(GLint x,GLint y,GLint z,GLint w,GLint h,ogles_context_t * c)45 inline bool drawTexiOESWithCopybit(GLint x, GLint y, GLint z,
46 GLint w, GLint h, ogles_context_t* c) {
47 if (!copybitQuickCheckContext(c)) {
48 return false;
49 }
50
51 return drawTexiOESWithCopybit_impl(x, y, z, w, h, c);
52 }
53
54 /*
55 * Tries to draw a triangle fan using copybit hardware.
56 * Returns true if successful.
57 */
drawTriangleFanWithCopybit(ogles_context_t * c,GLint first,GLsizei count)58 inline bool drawTriangleFanWithCopybit(ogles_context_t* c, GLint first,
59 GLsizei count) {
60 /*
61 * We are looking for the glDrawArrays call made by SurfaceFlinger.
62 */
63
64 if ((count!=4) || first || !copybitQuickCheckContext(c))
65 return false;
66
67 return drawTriangleFanWithCopybit_impl(c, first, count);
68 }
69
70
71 #endif // LIBAGL_USE_GRALLOC_COPYBITS
72
73 } // namespace android
74
75 #endif // ANDROID_OPENGLES_COPYBIT_H
76