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4 files changed

+298
-291
lines changed

4 files changed

+298
-291
lines changed

‎mode/libraries/ar/src/processing/ar/ARBackground.java

Lines changed: 119 additions & 117 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
33
import android.content.Context;
44
import android.opengl.GLES11Ext;
55
import android.opengl.GLES20;
6+
67
import com.google.ar.core.Frame;
78

89
import java.net.URL;
@@ -12,142 +13,143 @@
1213

1314
public class ARBackground {
1415

15-
private static final int COORDS_PER_VERTEX = 3;
16-
private static final int TEXCOORDS_PER_VERTEX = 2;
17-
private static final int FLOAT_SIZE = 4;
16+
private static final int COORDS_PER_VERTEX = 3;
17+
private static final int TEXCOORDS_PER_VERTEX = 2;
18+
private static final int FLOAT_SIZE = 4;
19+
20+
private FloatBuffer quadVertices;
21+
private FloatBuffer quadTexCoord;
22+
private FloatBuffer quadTexCoordTransformed;
23+
24+
private int quadProgram;
25+
26+
private int quadPositionParam;
27+
private int quadTexCoordParam;
28+
private int textureId = -1;
29+
30+
static private URL screenquad_vertex =
31+
ARBackground.class.getResource("/assets/shaders/screenquad_vertex.glsl");
32+
static private URL screenquad_fragment =
33+
ARBackground.class.getResource("/assets/shaders/screenquad_fragment.glsl");
34+
35+
private String VERTICES_ERROR = "Unexpected number of vertices in BackgroundRenderer";
36+
private String ERROR_TAG = "Error";
37+
private String CREATION_ERROR = "Program creation";
38+
private String PARAMETERS_ERROR = "Program parameters";
39+
private String DRAW_ERROR = "Draw";
40+
41+
public ARBackground() {
42+
}
43+
44+
public int getTextureId() {
45+
return textureId;
46+
}
47+
48+
public void createOnGlThread(Context context) {
49+
int[] textures = new int[1];
50+
GLES20.glGenTextures(1, textures, 0);
51+
textureId = textures[0];
52+
int textureTarget = GLES11Ext.GL_TEXTURE_EXTERNAL_OES;
53+
GLES20.glBindTexture(textureTarget, textureId);
54+
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
55+
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
56+
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
57+
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
58+
59+
int numVertices = 4;
60+
if (numVertices != QUAD_COORDS.length / COORDS_PER_VERTEX) {
61+
throw new RuntimeException(VERTICES_ERROR);
62+
}
1863

19-
private FloatBuffer quadVertices;
20-
private FloatBuffer quadTexCoord;
21-
private FloatBuffer quadTexCoordTransformed;
64+
ByteBuffer bbVertices = ByteBuffer.allocateDirect(QUAD_COORDS.length * FLOAT_SIZE);
65+
bbVertices.order(ByteOrder.nativeOrder());
66+
quadVertices = bbVertices.asFloatBuffer();
67+
quadVertices.put(QUAD_COORDS);
68+
quadVertices.position(0);
2269

23-
private int quadProgram;
70+
ByteBuffer bbTexCoords =
71+
ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
72+
bbTexCoords.order(ByteOrder.nativeOrder());
73+
quadTexCoord = bbTexCoords.asFloatBuffer();
74+
quadTexCoord.put(QUAD_TEXCOORDS);
75+
quadTexCoord.position(0);
2476

25-
private int quadPositionParam;
26-
private int quadTexCoordParam;
27-
private int textureId = -1;
77+
ByteBuffer bbTexCoordsTransformed =
78+
ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
79+
bbTexCoordsTransformed.order(ByteOrder.nativeOrder());
80+
quadTexCoordTransformed = bbTexCoordsTransformed.asFloatBuffer();
2881

29-
static private URL screenquad_vertex =
30-
ARBackground.class.getResource("/assets/shaders/screenquad_vertex.glsl");
31-
static private URL screenquad_fragment =
32-
ARBackground.class.getResource("/assets/shaders/screenquad_fragment.glsl");
82+
int vertexShader =
83+
Utils.loadGLShader(ERROR_TAG, context, GLES20.GL_VERTEX_SHADER, screenquad_vertex);
84+
int fragmentShader =
85+
Utils.loadGLShader(
86+
ERROR_TAG, context, GLES20.GL_FRAGMENT_SHADER, screenquad_fragment);
3387

34-
private String VERTICES_ERROR = "Unexpected number of vertices in BackgroundRenderer";
35-
private String ERROR_TAG = "Error";
36-
private String CREATION_ERROR = "Program creation";
37-
private String PARAMETERS_ERROR = "Program parameters";
38-
private String DRAW_ERROR = "Draw";
88+
quadProgram = GLES20.glCreateProgram();
89+
GLES20.glAttachShader(quadProgram, vertexShader);
90+
GLES20.glAttachShader(quadProgram, fragmentShader);
91+
GLES20.glLinkProgram(quadProgram);
92+
GLES20.glUseProgram(quadProgram);
3993

40-
public ARBackground() {}
94+
Utils.checkGLError(ERROR_TAG, CREATION_ERROR);
4195

42-
public int getTextureId() {
43-
return textureId;
44-
}
96+
quadPositionParam = GLES20.glGetAttribLocation(quadProgram, "a_Position");
97+
quadTexCoordParam = GLES20.glGetAttribLocation(quadProgram, "a_TexCoord");
4598

46-
public void createOnGlThread(Context context) {
47-
int[] textures = new int[1];
48-
GLES20.glGenTextures(1, textures, 0);
49-
textureId = textures[0];
50-
int textureTarget = GLES11Ext.GL_TEXTURE_EXTERNAL_OES;
51-
GLES20.glBindTexture(textureTarget, textureId);
52-
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
53-
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
54-
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_NEAREST);
55-
GLES20.glTexParameteri(textureTarget, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_NEAREST);
56-
57-
int numVertices = 4;
58-
if (numVertices != QUAD_COORDS.length / COORDS_PER_VERTEX) {
59-
throw new RuntimeException(VERTICES_ERROR);
60-
}
61-
62-
ByteBuffer bbVertices = ByteBuffer.allocateDirect(QUAD_COORDS.length * FLOAT_SIZE);
63-
bbVertices.order(ByteOrder.nativeOrder());
64-
quadVertices = bbVertices.asFloatBuffer();
65-
quadVertices.put(QUAD_COORDS);
66-
quadVertices.position(0);
67-
68-
ByteBuffer bbTexCoords =
69-
ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
70-
bbTexCoords.order(ByteOrder.nativeOrder());
71-
quadTexCoord = bbTexCoords.asFloatBuffer();
72-
quadTexCoord.put(QUAD_TEXCOORDS);
73-
quadTexCoord.position(0);
74-
75-
ByteBuffer bbTexCoordsTransformed =
76-
ByteBuffer.allocateDirect(numVertices * TEXCOORDS_PER_VERTEX * FLOAT_SIZE);
77-
bbTexCoordsTransformed.order(ByteOrder.nativeOrder());
78-
quadTexCoordTransformed = bbTexCoordsTransformed.asFloatBuffer();
79-
80-
int vertexShader =
81-
Utils.loadGLShader(ERROR_TAG, context, GLES20.GL_VERTEX_SHADER, screenquad_vertex);
82-
int fragmentShader =
83-
Utils.loadGLShader(
84-
ERROR_TAG, context, GLES20.GL_FRAGMENT_SHADER, screenquad_fragment);
85-
86-
quadProgram = GLES20.glCreateProgram();
87-
GLES20.glAttachShader(quadProgram, vertexShader);
88-
GLES20.glAttachShader(quadProgram, fragmentShader);
89-
GLES20.glLinkProgram(quadProgram);
90-
GLES20.glUseProgram(quadProgram);
91-
92-
Utils.checkGLError(ERROR_TAG, CREATION_ERROR);
93-
94-
quadPositionParam = GLES20.glGetAttribLocation(quadProgram, "a_Position");
95-
quadTexCoordParam = GLES20.glGetAttribLocation(quadProgram, "a_TexCoord");
96-
97-
Utils.checkGLError(ERROR_TAG, PARAMETERS_ERROR);
98-
}
99+
Utils.checkGLError(ERROR_TAG, PARAMETERS_ERROR);
100+
}
99101

100-
public void draw(Frame frame) {
102+
public void draw(Frame frame) {
101103

102-
if (frame.hasDisplayGeometryChanged()) {
103-
frame.transformDisplayUvCoords(quadTexCoord, quadTexCoordTransformed);
104-
}
104+
if (frame.hasDisplayGeometryChanged()) {
105+
frame.transformDisplayUvCoords(quadTexCoord, quadTexCoordTransformed);
106+
}
105107

106-
GLES20.glDisable(GLES20.GL_DEPTH_TEST);
107-
GLES20.glDepthMask(false);
108+
GLES20.glDisable(GLES20.GL_DEPTH_TEST);
109+
GLES20.glDepthMask(false);
108110

109-
GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, textureId);
111+
GLES20.glBindTexture(GLES11Ext.GL_TEXTURE_EXTERNAL_OES, textureId);
110112

111-
GLES20.glUseProgram(quadProgram);
113+
GLES20.glUseProgram(quadProgram);
112114

113-
GLES20.glVertexAttribPointer(
114-
quadPositionParam, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, quadVertices);
115+
GLES20.glVertexAttribPointer(
116+
quadPositionParam, COORDS_PER_VERTEX, GLES20.GL_FLOAT, false, 0, quadVertices);
115117

116-
GLES20.glVertexAttribPointer(
117-
quadTexCoordParam,
118-
TEXCOORDS_PER_VERTEX,
119-
GLES20.GL_FLOAT,
120-
false,
121-
0,
122-
quadTexCoordTransformed);
118+
GLES20.glVertexAttribPointer(
119+
quadTexCoordParam,
120+
TEXCOORDS_PER_VERTEX,
121+
GLES20.GL_FLOAT,
122+
false,
123+
0,
124+
quadTexCoordTransformed);
123125

124-
GLES20.glEnableVertexAttribArray(quadPositionParam);
125-
GLES20.glEnableVertexAttribArray(quadTexCoordParam);
126+
GLES20.glEnableVertexAttribArray(quadPositionParam);
127+
GLES20.glEnableVertexAttribArray(quadTexCoordParam);
126128

127-
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
129+
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
128130

129-
GLES20.glDisableVertexAttribArray(quadPositionParam);
130-
GLES20.glDisableVertexAttribArray(quadTexCoordParam);
131+
GLES20.glDisableVertexAttribArray(quadPositionParam);
132+
GLES20.glDisableVertexAttribArray(quadTexCoordParam);
131133

132-
GLES20.glDepthMask(true);
133-
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
134+
GLES20.glDepthMask(true);
135+
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
134136

135-
Utils.checkGLError(ERROR_TAG, DRAW_ERROR);
136-
}
137+
Utils.checkGLError(ERROR_TAG, DRAW_ERROR);
138+
}
139+
140+
private static final float[] QUAD_COORDS =
141+
new float[]{
142+
-1.0f, -1.0f, 0.0f,
143+
-1.0f, +1.0f, 0.0f,
144+
+1.0f, -1.0f, 0.0f,
145+
+1.0f, +1.0f, 0.0f,
146+
};
137147

138-
private static final float[] QUAD_COORDS =
139-
new float[] {
140-
-1.0f, -1.0f, 0.0f,
141-
-1.0f, +1.0f, 0.0f,
142-
+1.0f, -1.0f, 0.0f,
143-
+1.0f, +1.0f, 0.0f,
144-
};
145-
146-
private static final float[] QUAD_TEXCOORDS =
147-
new float[] {
148-
0.0f, 1.0f,
149-
0.0f, 0.0f,
150-
1.0f, 1.0f,
151-
1.0f, 0.0f,
152-
};
148+
private static final float[] QUAD_TEXCOORDS =
149+
new float[]{
150+
0.0f, 1.0f,
151+
0.0f, 0.0f,
152+
1.0f, 1.0f,
153+
1.0f, 0.0f,
154+
};
153155
}

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