JOGL v2.6.0-rc-20250712
JOGL, High-Performance Graphics Binding for Java™ (public API).
TextureDraw02ES2ListenerFBO.java
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28package com.jogamp.opengl.test.junit.jogl.demos.es2;
29
30import java.nio.FloatBuffer;
31
32import com.jogamp.opengl.GL;
33import com.jogamp.opengl.GL2ES2;
34import com.jogamp.opengl.GLAutoDrawable;
35import com.jogamp.opengl.GLEventListener;
36import com.jogamp.opengl.GLUniformData;
37import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
38
39import com.jogamp.opengl.FBObject;
40import com.jogamp.opengl.FBObject.TextureAttachment;
41import com.jogamp.opengl.FBObject.Attachment.Type;
42import com.jogamp.opengl.util.GLArrayDataServer;
43import com.jogamp.opengl.util.PMVMatrix;
44import com.jogamp.opengl.util.glsl.ShaderCode;
45import com.jogamp.opengl.util.glsl.ShaderProgram;
46import com.jogamp.opengl.util.glsl.ShaderState;
47
49 private final GLEventListener demo;
50 private final int swapInterval;
51 private boolean clearBuffers = true;
52 private int numSamples;
53 int textureUnit;
54 boolean keepTextureBound;
55
56 private final ShaderState st;
57 private final PMVMatrix pmvMatrix;
58
59 private final FBObject fbo0;
60
61 private TextureAttachment fbo0Tex;
62
63 private ShaderProgram sp0;
64 private GLUniformData pmvMatrixUniform;
65 private GLArrayDataServer interleavedVBO;
66 private GLUniformData texUnit0;
67
68 public TextureDraw02ES2ListenerFBO(final GLEventListener demo, final int swapInterval, final int textureUnit) {
69 this.demo = demo;
70 this.swapInterval = swapInterval;
71 this.textureUnit = textureUnit;
72 this.keepTextureBound = false;
73
74 st = new ShaderState();
75 // st.setVerbose(true);
76 pmvMatrix = new PMVMatrix();
77
78 fbo0 = new FBObject();
79
80 numSamples = 0;
81 }
82
83 public void setClearBuffers(final boolean v) { clearBuffers = v; }
84
85 public void setKeepTextureBound(final boolean v) {
86 this.keepTextureBound = v;
87 }
88 public void setMSAA(final int numSamples) {
89 this.numSamples=numSamples;
90 }
91 public int getMSAA() { return numSamples; }
92
93 @Override
94 public void init(final GLAutoDrawable drawable) {
95 final GL2ES2 gl = drawable.getGL().getGL2ES2();
96
97 demo.init(drawable);
98
100 "shader/bin", "texture01_xxx", true);
102 "shader/bin", "texture02_xxx", true);
103 vp0.defaultShaderCustomization(gl, true, true);
104 fp0.defaultShaderCustomization(gl, true, true);
105
106 sp0 = new ShaderProgram();
107 sp0.add(gl, vp0, System.err);
108 sp0.add(gl, fp0, System.err);
109 st.attachShaderProgram(gl, sp0, true);
110
111 pmvMatrixUniform = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.getSyncPMv());
112 st.ownUniform(pmvMatrixUniform);
113 st.uniform(gl, pmvMatrixUniform);
114
115 interleavedVBO = GLArrayDataServer.createGLSLInterleaved(3+4+2, GL.GL_FLOAT, false, 3*4, GL.GL_STATIC_DRAW);
116 {
117 interleavedVBO.addGLSLSubArray("mgl_Vertex", 3, GL.GL_ARRAY_BUFFER);
118 interleavedVBO.addGLSLSubArray("mgl_Color", 4, GL.GL_ARRAY_BUFFER);
119 //interleavedVBO.addGLSLSubArray("mgl_Normal", 3, GL.GL_ARRAY_BUFFER);
120 interleavedVBO.addGLSLSubArray("mgl_MultiTexCoord", 2, GL.GL_ARRAY_BUFFER);
121
122 final FloatBuffer ib = (FloatBuffer)interleavedVBO.getBuffer();
123
124 for(int i=0; i<4; i++) {
125 ib.put(s_quadVertices, i*3, 3);
126 ib.put(s_quadColors, i*4, 4);
127 //ib.put(s_cubeNormals, i*3, 3);
128 ib.put(s_quadTexCoords, i*2, 2);
129 }
130 }
131 interleavedVBO.seal(gl, true);
132 interleavedVBO.enableBuffer(gl, false);
133 st.ownAttribute(interleavedVBO, true);
134
135 texUnit0 = new GLUniformData("mgl_Texture0", textureUnit);
136 st.ownUniform(texUnit0);
137 st.uniform(gl, texUnit0);
138
139 st.useProgram(gl, false);
140
141 initFBOs(gl, drawable.getSurfaceWidth(), drawable.getSurfaceHeight());
142
144 }
145
146 private void initFBOs(final GL gl, final int width, final int height) {
147 fbo0.init(gl, width, height, numSamples);
148 numSamples = fbo0.getNumSamples();
149
150 if(numSamples>0) {
151 fbo0.attachColorbuffer(gl, 0, true);
152 fbo0.resetSamplingSink(gl);
153 fbo0Tex = fbo0.getSamplingSink().getTextureAttachment();
154 } else {
155 fbo0Tex = fbo0.attachTexture2D(gl, 0, true);
156 }
157 numSamples=fbo0.getNumSamples();
159 fbo0.unbind(gl);
160 }
161
162 private void resetFBOs(final GL gl, final int width, final int height) {
163 fbo0.reset(gl, width, height, numSamples);
164 numSamples = fbo0.getNumSamples();
165 if(numSamples>0) {
166 fbo0Tex = fbo0.getSamplingSink().getTextureAttachment();
167 } else {
168 fbo0Tex = fbo0.getColorbuffer(0).getTextureAttachment();
169 }
170 }
171
172 @Override
173 public void dispose(final GLAutoDrawable drawable) {
174 final GL2ES2 gl = drawable.getGL().getGL2ES2();
175 demo.dispose(drawable);
176 fbo0.destroy(gl);
177 st.destroy(gl);
178
179 fbo0Tex = null;
180 sp0 = null;
181 pmvMatrixUniform = null;
182 interleavedVBO = null;
183 }
184
185 @Override
186 public void display(final GLAutoDrawable drawable) {
187 final GL2ES2 gl = drawable.getGL().getGL2ES2();
188
189 if( fbo0.getNumSamples() != numSamples ) {
190 System.err.println("**** NumSamples: "+fbo0.getNumSamples()+" -> "+numSamples);
191 resetFBOs(gl, drawable.getSurfaceWidth(), drawable.getSurfaceHeight());
192 }
193
194 if(0 < numSamples) {
196 }
197
198 fbo0.bind(gl);
199 demo.display(drawable);
200 fbo0.unbind(gl);
201
202 st.useProgram(gl, true);
203 if( clearBuffers ) {
204 gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
206 }
207
208 if( !keepTextureBound ) {
209 gl.glActiveTexture(GL.GL_TEXTURE0 + texUnit0.intValue());
210 fbo0.use(gl, fbo0Tex);
211 if( !gl.isGLcore() ) {
213 }
214 }
215 gl.glActiveTexture(GL.GL_TEXTURE0 + texUnit0.intValue());
216 interleavedVBO.enableBuffer(gl, true);
217
219
220 interleavedVBO.enableBuffer(gl, false);
221
222 if( !keepTextureBound ) {
223 fbo0.unuse(gl);
224 }
225
226 st.useProgram(gl, false);
227 }
228
229 @Override
230 public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
231 final GL2ES2 gl = drawable.getGL().getGL2ES2();
232
233 gl.setSwapInterval(swapInterval); // in case switching the drawable (impl. may bound attribute there)
234
235 System.err.println("**** Reshape.Reset: "+width+"x"+height);
236 if( keepTextureBound ) {
237 fbo0.unuse(gl);
238 }
239 resetFBOs(gl, width, height);
240
241 fbo0.bind(gl);
242 demo.reshape(drawable, x, y, width, height);
243 fbo0.unbind(gl);
244
245 if( keepTextureBound ) {
246 gl.glActiveTexture(GL.GL_TEXTURE0 + texUnit0.intValue());
247 fbo0.use(gl, fbo0Tex);
248 if( !gl.isGLcore() ) {
250 }
251 }
252
254 pmvMatrix.glLoadIdentity();
255 pmvMatrix.glOrthof(-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 10.0f);
256
258 pmvMatrix.glLoadIdentity();
259
260 st.useProgram(gl, true);
261 st.uniform(gl, pmvMatrixUniform);
262 st.useProgram(gl, false);
263
264 }
265
266 private static final float[] s_quadVertices = {
267 -1f, -1f, 0f, // LB
268 1f, -1f, 0f, // RB
269 -1f, 1f, 0f, // LT
270 1f, 1f, 0f // RT
271 };
272 private static final float[] s_quadColors = {
273 1f, 1f, 1f, 1f,
274 1f, 1f, 1f, 1f,
275 1f, 1f, 1f, 1f,
276 1f, 1f, 1f, 1f };
277 private static final float[] s_quadTexCoords = {
278 0f, 0f, // LB
279 1f, 0f, // RB
280 0f, 1f, // LT
281 1f, 1f // RT
282 };
283}
final SyncMatrices4f getSyncPMv()
Returns SyncMatrices4f of 2 matrices within one FloatBuffer: P and Mv.
Core utility class simplifying usage of framebuffer objects (FBO) with all GLProfiles.
Definition: FBObject.java:53
final void attachRenderbuffer(final GL gl, final Attachment.Type atype, final int reqBits)
Attaches one depth, stencil or packed-depth-stencil buffer to this FBO's instance,...
Definition: FBObject.java:1691
final void bind(final GL gl)
Bind this FBO, i.e.
Definition: FBObject.java:2540
final TextureAttachment attachTexture2D(final GL gl, final int attachmentPoint, final boolean alpha)
Attaches a Colorbuffer, i.e.
Definition: FBObject.java:1387
final int getNumSamples()
Returns the number of samples for multisampling (MSAA).
Definition: FBObject.java:2757
final void destroy(final GL gl)
Definition: FBObject.java:2253
final void unuse(final GL gl)
Unbind texture, ie bind 'non' texture 0.
Definition: FBObject.java:2684
final void use(final GL gl, final TextureAttachment ta)
Synchronize the sampling sink and bind the given TextureAttachment, if not null.
Definition: FBObject.java:2672
final Colorbuffer getSamplingSink()
Return the multisampling Colorbuffer sink, if using multisampling.
Definition: FBObject.java:2782
final boolean resetSamplingSink(final GL gl)
Manually validates the MSAA sampling sink, if used.
Definition: FBObject.java:2345
final ColorAttachment attachColorbuffer(final GL gl, final int attachmentPoint, final boolean alpha)
Attaches a newly created and initialized Colorbuffer, i.e.
Definition: FBObject.java:1496
final void unbind(final GL gl)
Unbind this FBO, i.e.
Definition: FBObject.java:2563
final boolean reset(final GL gl, int newWidth, int newHeight, int newSamples)
Resets this FBO's instance.
Definition: FBObject.java:1140
static final int CHOSEN_BITS
Request current context drawable's chosen depth- or stencil-bits; value {@value}.
Definition: FBObject.java:1658
void init(final GL gl, final int newWidth, final int newHeight, final int newSamples)
Initializes this FBO's instance.
Definition: FBObject.java:1008
final Colorbuffer getColorbuffer(final int attachmentPoint)
Return the Colorbuffer attachment at attachmentPoint if it is attached to this FBO,...
Definition: FBObject.java:886
GLSL uniform data wrapper encapsulating data to be uploaded to the GPU as a uniform.
void display(final GLAutoDrawable drawable)
Called by the drawable to initiate OpenGL rendering by the client.
void init(final GLAutoDrawable drawable)
Called by the drawable immediately after the OpenGL context is initialized.
void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height)
Called by the drawable during the first repaint after the component has been resized.
void dispose(final GLAutoDrawable drawable)
Notifies the listener to perform the release of all OpenGL resources per GLContext,...
TextureDraw02ES2ListenerFBO(final GLEventListener demo, final int swapInterval, final int textureUnit)
void seal(final GL gl, final boolean seal)
Convenience method calling seal(boolean) and enableBuffer(GL, boolean).
void enableBuffer(final GL gl, final boolean enable)
Enables the buffer if enable is true, and transfers the data if required.
static GLArrayDataServer createGLSLInterleaved(final int compsPerElement, final int dataType, final boolean normalized, final int initialElementCount, final int vboUsage)
Create a VBO for GLSL interleaved array data starting with a new created Buffer object with initialEl...
GLArrayDataWrapper addGLSLSubArray(final String name, final int comps, final int vboTarget)
Configure a segment of this GLSL interleaved array (see createGLSLInterleaved(int,...
Buffer getBuffer()
The Buffer holding the data, may be null if a GPU buffer without client bound data.
PMVMatrix implements a subset of the fixed function pipeline GLMatrixFunc using PMVMatrix4f.
Definition: PMVMatrix.java:62
final void glMatrixMode(final int matrixName)
Sets the current matrix mode.
Definition: PMVMatrix.java:218
final void glOrthof(final float left, final float right, final float bottom, final float top, final float zNear, final float zFar)
Multiply the current matrix with the orthogonal matrix.
Definition: PMVMatrix.java:469
final void glLoadIdentity()
Load the current matrix with the identity matrix.
Definition: PMVMatrix.java:325
Convenient shader code class to use and instantiate vertex or fragment programs.
Definition: ShaderCode.java:75
final int defaultShaderCustomization(final GL2ES2 gl, final boolean preludeVersion, final boolean addDefaultPrecision)
Default customization of this shader source code.
static ShaderCode create(final GL2ES2 gl, final int type, final int count, final Class<?> context, final String[] sourceFiles, final boolean mutableStringBuilder)
Creates a complete ShaderCode object while reading all shader source of sourceFiles,...
synchronized void add(final ShaderCode shaderCode)
Adds a new shader to this program.
ShaderState allows to sharing data between shader programs, while updating the attribute and uniform ...
void ownAttribute(final GLArrayData attribute, final boolean own)
Binds or unbinds the GLArrayData lifecycle to this ShaderState.
synchronized void useProgram(final GL2ES2 gl, final boolean on)
Turns the shader program on or off.
synchronized boolean attachShaderProgram(final GL2ES2 gl, final ShaderProgram prog, final boolean enable)
Attach or switch a shader program.
synchronized void destroy(final GL2ES2 gl)
Calls release(gl, true, true, true).
boolean uniform(final GL2ES2 gl, final GLUniformData data)
Set the uniform data, if it's location is valid, i.e.
void ownUniform(final GLUniformData uniform)
Bind the GLUniform lifecycle to this ShaderState.
TextureAttachment getTextureAttachment()
Casts this object to a TextureAttachment reference, see isTextureAttachment().
static final int GL_VERTEX_SHADER
GL_ES_VERSION_2_0, GL_VERSION_2_0, GL_EXT_vertex_shader, GL_ARB_vertex_shader Alias for: GL_VERTEX_SH...
Definition: GL2ES2.java:39
static final int GL_FRAGMENT_SHADER
GL_ES_VERSION_2_0, GL_VERSION_2_0, GL_ATI_fragment_shader, GL_ARB_fragment_shader Alias for: GL_FRAGM...
Definition: GL2ES2.java:541
A higher-level abstraction than GLDrawable which supplies an event based mechanism (GLEventListener) ...
GL getGL()
Returns the GL pipeline object this GLAutoDrawable uses.
GL2ES2 getGL2ES2()
Casts this object to the GL2ES2 interface.
void setSwapInterval(int interval)
Set the swap interval of the current context and attached onscreen GLDrawable.
boolean isGLcore()
Indicates whether this GL object uses a GL core profile.
int getSurfaceWidth()
Returns the width of this GLDrawable's surface client area in pixel units.
int getSurfaceHeight()
Returns the height of this GLDrawable's surface client area in pixel units.
Declares events which client code can use to manage OpenGL rendering into a GLAutoDrawable.
void dispose(GLAutoDrawable drawable)
Notifies the listener to perform the release of all OpenGL resources per GLContext,...
void display(GLAutoDrawable drawable)
Called by the drawable to initiate OpenGL rendering by the client.
void init(GLAutoDrawable drawable)
Called by the drawable immediately after the OpenGL context is initialized.
void reshape(GLAutoDrawable drawable, int x, int y, int width, int height)
Called by the drawable during the first repaint after the component has been resized.
static final int GL_MULTISAMPLE
Common in ES1, GL2 and GL3.
Definition: GL.java:1249
void glDrawArrays(int mode, int first, int count)
Entry point to C language function: void {@native glDrawArrays}(GLenum mode, GLint first,...
static final int GL_STATIC_DRAW
GL_VERSION_1_5, GL_ES_VERSION_2_0, GL_VERSION_ES_1_0, GL_ARB_vertex_buffer_object Alias for: GL_STATI...
Definition: GL.java:673
static final int GL_TEXTURE_2D
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_TEXTURE_2D" with expr...
Definition: GL.java:491
static final int GL_FLOAT
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_FLOAT" with expressio...
Definition: GL.java:786
static final int GL_COLOR_BUFFER_BIT
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_COLOR_BUFFER_BIT" wit...
Definition: GL.java:390
void glClearColor(float red, float green, float blue, float alpha)
Entry point to C language function: void {@native glClearColor}(GLfloat red, GLfloat green,...
void glEnable(int cap)
Entry point to C language function: void {@native glEnable}(GLenum cap) Part of GL_ES_VERSION_2_0,...
static final int GL_DEPTH_TEST
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_DEPTH_TEST" with expr...
Definition: GL.java:43
void glActiveTexture(int texture)
Entry point to C language function: void {@native glActiveTexture}(GLenum texture) Part of GL_ES_V...
void glClear(int mask)
Entry point to C language function: void {@native glClear}(GLbitfield mask) Part of GL_ES_VERSION_...
static final int GL_TRIANGLE_STRIP
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_TRIANGLE_STRIP" with ...
Definition: GL.java:760
static final int GL_TEXTURE0
GL_ES_VERSION_2_0, GL_VERSION_1_3, GL_VERSION_ES_1_0, GL_ARB_multitexture Alias for: GL_TEXTURE0_ARB ...
Definition: GL.java:71
static final int GL_DEPTH_BUFFER_BIT
GL_ES_VERSION_2_0, GL_VERSION_1_1, GL_VERSION_1_0, GL_VERSION_ES_1_0 Define "GL_DEPTH_BUFFER_BIT" wit...
Definition: GL.java:738
static final int GL_ARRAY_BUFFER
GL_VERSION_1_5, GL_ES_VERSION_2_0, GL_VERSION_ES_1_0, GL_ARB_vertex_buffer_object Alias for: GL_ARRAY...
Definition: GL.java:633
Subset of OpenGL fixed function pipeline's matrix operations.
static final int GL_PROJECTION
Matrix mode projection.
static final int GL_MODELVIEW
Matrix mode modelview.