// Copies source texture tex into this.
protected void copyTexture(
int texTarget,
int texName,
int texWidth,
int texHeight,
int x,
int y,
int w,
int h,
boolean scale) {
if (tempFbo == null) {
tempFbo = new FrameBuffer(parent, glWidth, glHeight);
}
// This texture is the color (destination) buffer of the FBO.
tempFbo.setColorBuffer(this);
tempFbo.disableDepthTest();
// FBO copy:
pg.pushFramebuffer();
pg.setFramebuffer(tempFbo);
if (scale) {
// Rendering tex into "this", and scaling the source rectangle
// to cover the entire destination region.
pgl.drawTexture(texTarget, texName, texWidth, texHeight, x, y, w, h, 0, 0, width, height);
} else {
// Rendering tex into "this" but without scaling so the contents
// of the source texture fall in the corresponding texels of the
// destination.
pgl.drawTexture(texTarget, texName, texWidth, texHeight, x, y, w, h, x, y, w, h);
}
pg.popFramebuffer();
updateTexels(x, y, w, h);
}
/** Copy texture to pixels. Involves video memory to main memory transfer (slow). */
public void get(int[] pixels) {
if (pixels == null) {
throw new RuntimeException("Trying to copy texture to null pixels array");
}
if (pixels.length != width * height) {
throw new RuntimeException("Trying to copy texture to pixels array of " + "wrong size");
}
if (tempFbo == null) {
tempFbo = new FrameBuffer(parent, glWidth, glHeight);
}
// Attaching the texture to the color buffer of a FBO, binding the FBO and
// reading the pixels from the current draw buffer (which is the color
// buffer of the FBO).
tempFbo.setColorBuffer(this);
pg.pushFramebuffer();
pg.setFramebuffer(tempFbo);
tempFbo.readPixels();
pg.popFramebuffer();
tempFbo.getPixels(pixels);
convertToARGB(pixels);
if (invertedX) flipArrayOnX(pixels, 1);
if (invertedY) flipArrayOnY(pixels, 1);
}
protected void createDepthBuffer() {
if (screenFb) return;
if (width == 0 || height == 0) {
throw new RuntimeException("PFramebuffer: size undefined.");
}
pg.pushFramebuffer();
pg.setFramebuffer(this);
glDepthBufferID = pg.createRenderBufferObject();
pgl.glBindRenderbuffer(PGL.GL_RENDERBUFFER, glDepthBufferID);
int glConst = PGL.GL_DEPTH_COMPONENT16;
if (depthBits == 16) {
glConst = PGL.GL_DEPTH_COMPONENT16;
} else if (depthBits == 24) {
glConst = PGL.GL_DEPTH_COMPONENT24;
} else if (depthBits == 32) {
glConst = PGL.GL_DEPTH_COMPONENT32;
}
if (multisample) {
pgl.glRenderbufferStorageMultisample(PGL.GL_RENDERBUFFER, nsamples, glConst, width, height);
} else {
pgl.glRenderbufferStorage(PGL.GL_RENDERBUFFER, glConst, width, height);
}
pgl.glFramebufferRenderbuffer(
PGL.GL_FRAMEBUFFER, PGL.GL_DEPTH_ATTACHMENT, PGL.GL_RENDERBUFFER, glDepthBufferID);
pg.popFramebuffer();
}
protected void createStencilBuffer() {
if (screenFb) return;
if (width == 0 || height == 0) {
throw new RuntimeException("PFramebuffer: size undefined.");
}
pg.pushFramebuffer();
pg.setFramebuffer(this);
glStencilBufferID = pg.createRenderBufferObject();
pgl.glBindRenderbuffer(PGL.GL_RENDERBUFFER, glStencilBufferID);
int glConst = PGL.GL_STENCIL_INDEX1;
if (stencilBits == 1) {
glConst = PGL.GL_STENCIL_INDEX1;
} else if (stencilBits == 4) {
glConst = PGL.GL_STENCIL_INDEX4;
} else if (stencilBits == 8) {
glConst = PGL.GL_STENCIL_INDEX8;
}
if (multisample) {
pgl.glRenderbufferStorageMultisample(PGL.GL_RENDERBUFFER, nsamples, glConst, width, height);
} else {
pgl.glRenderbufferStorage(PGL.GL_RENDERBUFFER, glConst, width, height);
}
pgl.glFramebufferRenderbuffer(
PGL.GL_FRAMEBUFFER, PGL.GL_STENCIL_ATTACHMENT, PGL.GL_RENDERBUFFER, glStencilBufferID);
pg.popFramebuffer();
}
protected void createPackedDepthStencilBuffer() {
if (screenFb) return;
if (width == 0 || height == 0) {
throw new RuntimeException("PFramebuffer: size undefined.");
}
pg.pushFramebuffer();
pg.setFramebuffer(this);
glDepthStencilBufferID = pg.createRenderBufferObject();
pgl.glBindRenderbuffer(PGL.GL_RENDERBUFFER, glDepthStencilBufferID);
if (multisample) {
pgl.glRenderbufferStorageMultisample(
PGL.GL_RENDERBUFFER, nsamples, PGL.GL_DEPTH24_STENCIL8, width, height);
} else {
pgl.glRenderbufferStorage(PGL.GL_RENDERBUFFER, PGL.GL_DEPTH24_STENCIL8, width, height);
}
pgl.glFramebufferRenderbuffer(
PGL.GL_FRAMEBUFFER, PGL.GL_DEPTH_ATTACHMENT, PGL.GL_RENDERBUFFER, glDepthStencilBufferID);
pgl.glFramebufferRenderbuffer(
PGL.GL_FRAMEBUFFER, PGL.GL_STENCIL_ATTACHMENT, PGL.GL_RENDERBUFFER, glDepthStencilBufferID);
pg.popFramebuffer();
}
public void setColorBuffers(PTexture[] textures, int n) {
if (screenFb) return;
if (numColorBuffers != PApplet.min(n, textures.length)) {
throw new RuntimeException("Wrong number of textures to set the color buffers.");
}
for (int i = 0; i < numColorBuffers; i++) {
colorBufferTex[i] = textures[i];
}
pg.pushFramebuffer();
pg.setFramebuffer(this);
// Making sure nothing is attached.
for (int i = 0; i < numColorBuffers; i++) {
pgl.glFramebufferTexture2D(
PGL.GL_FRAMEBUFFER, PGL.GL_COLOR_ATTACHMENT0 + i, PGL.GL_TEXTURE_2D, 0, 0);
}
for (int i = 0; i < numColorBuffers; i++) {
pgl.glFramebufferTexture2D(
PGL.GL_FRAMEBUFFER,
PGL.GL_COLOR_ATTACHMENT0 + i,
colorBufferTex[i].glTarget,
colorBufferTex[i].glID,
0);
}
pgl.validateFramebuffer();
pg.popFramebuffer();
}
public void clear() {
pg.pushFramebuffer();
pg.setFramebuffer(this);
pgl.glClearColor(0, 0, 0, 0);
pgl.glClear(PGL.GL_COLOR_BUFFER_BIT | PGL.GL_DEPTH_BUFFER_BIT | PGL.GL_STENCIL_BUFFER_BIT);
pg.popFramebuffer();
}
protected void createColorBufferMultisample() {
if (screenFb) return;
pg.pushFramebuffer();
pg.setFramebuffer(this);
glColorBufferMultisampleID = pg.createRenderBufferObject();
pgl.glBindRenderbuffer(PGL.GL_RENDERBUFFER, glColorBufferMultisampleID);
pgl.glRenderbufferStorageMultisample(
PGL.GL_RENDERBUFFER, nsamples, PGL.GL_RGBA8, width, height);
pgl.glFramebufferRenderbuffer(
PGL.GL_FRAMEBUFFER,
PGL.GL_COLOR_ATTACHMENT0,
PGL.GL_RENDERBUFFER,
glColorBufferMultisampleID);
pg.popFramebuffer();
}
// Copies source texture tex into this.
protected void copyTexture(Texture tex, int x, int y, int w, int h, boolean scale) {
if (tex == null) {
throw new RuntimeException("Source texture is null");
}
if (tempFbo == null) {
tempFbo = new FrameBuffer(glWidth, glHeight);
}
// This texture is the color (destination) buffer of the FBO.
tempFbo.setColorBuffer(this);
tempFbo.disableDepthTest();
// FBO copy:
PGraphicsOpenGL.pushFramebuffer();
PGraphicsOpenGL.setFramebuffer(tempFbo);
// Clear the color buffer to make sure that the alpha channel is set to
// full transparency
pgl.clearColor(0, 0, 0, 0);
pgl.clear(PGL.COLOR_BUFFER_BIT);
if (scale) {
// Rendering tex into "this", and scaling the source rectangle
// to cover the entire destination region.
pgl.drawTexture(
tex.glTarget,
tex.glName,
tex.glWidth,
tex.glHeight,
tempFbo.width,
tempFbo.height,
x,
y,
w,
h,
0,
0,
width,
height);
} else {
// Rendering tex into "this" but without scaling so the contents
// of the source texture fall in the corresponding texels of the
// destination.
pgl.drawTexture(
tex.glTarget,
tex.glName,
tex.glWidth,
tex.glHeight,
tempFbo.width,
tempFbo.height,
x,
y,
w,
h,
x,
y,
w,
h);
}
PGraphicsOpenGL.popFramebuffer();
updateTexels(x, y, w, h);
}
