1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SF_RENDERENGINE_H_
#define SF_RENDERENGINE_H_
#include <stdint.h>
#include <sys/types.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <ui/mat4.h>
#include <Transform.h>
#define EGL_NO_CONFIG ((EGLConfig)0)
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class String8;
class Rect;
class Region;
class Mesh;
class Texture;
class RenderEngine {
enum GlesVersion {
GLES_VERSION_1_0 = 0x10000,
GLES_VERSION_1_1 = 0x10001,
GLES_VERSION_2_0 = 0x20000,
GLES_VERSION_3_0 = 0x30000,
};
static GlesVersion parseGlesVersion(const char* str);
EGLConfig mEGLConfig;
EGLContext mEGLContext;
void setEGLHandles(EGLConfig config, EGLContext ctxt);
virtual void bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName,
uint32_t* fbName, uint32_t* status, bool useReadPixels, int reqWidth,
int reqHeight) = 0;
virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName,
bool useReadPixels) = 0;
protected:
RenderEngine();
virtual ~RenderEngine() = 0;
public:
static RenderEngine* create(EGLDisplay display, int hwcFormat);
static EGLConfig chooseEglConfig(EGLDisplay display, int format);
// dump the extension strings. always call the base class.
virtual void dump(String8& result);
// helpers
void flush();
void clearWithColor(float red, float green, float blue, float alpha);
void fillRegionWithColor(const Region& region, uint32_t height,
float red, float green, float blue, float alpha);
// common to all GL versions
void setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top);
void disableScissor();
void genTextures(size_t count, uint32_t* names);
void deleteTextures(size_t count, uint32_t const* names);
void readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels);
class BindImageAsFramebuffer {
RenderEngine& mEngine;
uint32_t mTexName, mFbName;
uint32_t mStatus;
bool mUseReadPixels;
public:
BindImageAsFramebuffer(RenderEngine& engine, EGLImageKHR image,
bool useReadPixels, int reqWidth, int reqHeight);
~BindImageAsFramebuffer();
int getStatus() const;
};
// set-up
virtual void checkErrors() const;
virtual void setViewportAndProjection(size_t vpw, size_t vph,
Rect sourceCrop, size_t hwh, bool yswap, Transform::orientation_flags rotation) = 0;
virtual void setupLayerBlending(bool premultipliedAlpha, bool opaque, int alpha) = 0;
virtual void setupDimLayerBlending(int alpha) = 0;
virtual void setupLayerTexturing(const Texture& texture) = 0;
virtual void setupLayerBlackedOut() = 0;
virtual void setupFillWithColor(float r, float g, float b, float a) = 0;
virtual mat4 setupColorTransform(const mat4& /* colorTransform */) {
return mat4();
}
virtual void disableTexturing() = 0;
virtual void disableBlending() = 0;
virtual void setupLayerMasking(const Texture& maskTexture, float alphaThreshold) = 0;
virtual void disableLayerMasking() = 0;
// drawing
virtual void drawMesh(const Mesh& mesh) = 0;
// queries
virtual size_t getMaxTextureSize() const = 0;
virtual size_t getMaxViewportDims() const = 0;
virtual bool getProjectionYSwap() { return 0; }
virtual size_t getViewportWidth() const { return 1; }
virtual size_t getViewportHeight() const { return 1; }
virtual Rect getProjectionSourceCrop() const { return Rect(0, 0, 1, 1); }
virtual Transform::orientation_flags getProjectionRotation() const { return Transform::ROT_0; }
EGLConfig getEGLConfig() const;
EGLContext getEGLContext() const;
};
// ---------------------------------------------------------------------------
}; // namespace android
// ---------------------------------------------------------------------------
#endif /* SF_RENDERENGINE_H_ */
|
