protected void copyObject(Texture src) {
// The OpenGL texture of this object is replaced with the one from the
// source object, so we delete the former to avoid resource wasting.
release();
width = src.width;
height = src.height;
parent = src.parent;
pg = src.pg;
glName = src.glName;
glTarget = src.glTarget;
glFormat = src.glFormat;
glMinFilter = src.glMinFilter;
glMagFilter = src.glMagFilter;
glWidth = src.glWidth;
glHeight = src.glHeight;
usingMipmaps = src.usingMipmaps;
usingRepeat = src.usingRepeat;
maxTexcoordU = src.maxTexcoordU;
maxTexcoordV = src.maxTexcoordV;
invertedX = src.invertedX;
invertedY = src.invertedY;
}
public void resize(int wide, int high) {
// Marking the texture object as finalized so it is deleted
// when creating the new texture.
release();
// Creating new texture with the appropriate size.
Texture tex = new Texture(parent, wide, high, getParameters());
// Copying the contents of this texture into tex.
tex.set(this);
// Now, overwriting "this" with tex.
copyObject(tex);
// Nullifying some utility objects so they are recreated with the
// appropriate size when needed.
tempFbo = null;
}
/** Allocates the opengl texture object. */
protected void allocate() {
release(); // Just in the case this object is being re-allocated.
boolean enabledTex = false;
if (!pgl.texturingIsEnabled(glTarget)) {
pgl.enableTexturing(glTarget);
enabledTex = true;
}
context = pgl.getCurrentContext();
glName = pg.createTextureObject(context);
pgl.bindTexture(glTarget, glName);
pgl.texParameteri(glTarget, PGL.TEXTURE_MIN_FILTER, glMinFilter);
pgl.texParameteri(glTarget, PGL.TEXTURE_MAG_FILTER, glMagFilter);
pgl.texParameteri(glTarget, PGL.TEXTURE_WRAP_S, glWrapS);
pgl.texParameteri(glTarget, PGL.TEXTURE_WRAP_T, glWrapT);
if (PGraphicsOpenGL.anisoSamplingSupported) {
pgl.texParameterf(glTarget, PGL.TEXTURE_MAX_ANISOTROPY, PGraphicsOpenGL.maxAnisoAmount);
}
// First, we use glTexImage2D to set the full size of the texture (glW/glH
// might be diff from w/h in the case that the GPU doesn't support NPOT
// textures)
pgl.texImage2D(glTarget, 0, glFormat, glWidth, glHeight, 0, PGL.RGBA, PGL.UNSIGNED_BYTE, null);
// Makes sure that the texture buffer in video memory doesn't contain
// any garbage.
pgl.initTexture(glTarget, PGL.RGBA, width, height);
pgl.bindTexture(glTarget, 0);
if (enabledTex) {
pgl.disableTexturing(glTarget);
}
bound = false;
}
