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Diffstat (limited to 'src/jogl/classes/com/sun/opengl/util/awt/TextureRenderer.java')
| -rwxr-xr-x | src/jogl/classes/com/sun/opengl/util/awt/TextureRenderer.java | 699 |
1 files changed, 0 insertions, 699 deletions
diff --git a/src/jogl/classes/com/sun/opengl/util/awt/TextureRenderer.java b/src/jogl/classes/com/sun/opengl/util/awt/TextureRenderer.java deleted file mode 100755 index 86ea1dbc7..000000000 --- a/src/jogl/classes/com/sun/opengl/util/awt/TextureRenderer.java +++ /dev/null @@ -1,699 +0,0 @@ -/* - * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * - Redistribution of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistribution in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * Neither the name of Sun Microsystems, Inc. or the names of - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * This software is provided "AS IS," without a warranty of any kind. ALL - * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, - * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A - * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN - * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR - * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR - * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR - * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR - * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE - * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, - * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF - * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. - * - * You acknowledge that this software is not designed or intended for use - * in the design, construction, operation or maintenance of any nuclear - * facility. - * - * Sun gratefully acknowledges that this software was originally authored - * and developed by Kenneth Bradley Russell and Christopher John Kline. - */ - -package com.sun.opengl.util.awt; - -import java.awt.Color; -import java.awt.Dimension; -import java.awt.Graphics2D; -import java.awt.Image; -import java.awt.Rectangle; -import java.awt.image.*; - -import javax.media.opengl.*; -import javax.media.opengl.glu.*; -import javax.media.opengl.glu.gl2.*; -import com.sun.opengl.util.texture.*; -import com.sun.opengl.util.texture.spi.*; -import com.sun.opengl.util.texture.awt.*; - -/** Provides the ability to render into an OpenGL {@link - com.sun.opengl.util.texture.Texture Texture} using the Java 2D - APIs. This renderer class uses an internal Java 2D image (of - unspecified type) for its backing store and flushes portions of - that image to an OpenGL texture on demand. The resulting OpenGL - texture can then be mapped on to a polygon for display. */ - -public class TextureRenderer { - // For now, we supply only a BufferedImage back-end for this - // renderer. In theory we could use the Java 2D/JOGL bridge to fully - // accelerate the rendering paths, but there are restrictions on - // what work can be done where; for example, Graphics2D-related work - // must not be done on the Queue Flusher Thread, but JOGL's - // OpenGL-related work must be. This implies that the user's code - // would need to be split up into multiple callbacks run from the - // appropriate threads, which would be somewhat unfortunate. - - // Whether we have an alpha channel in the (RGB/A) backing store - private boolean alpha; - - // Whether we're using only a GL_INTENSITY backing store - private boolean intensity; - - // Whether we're attempting to use automatic mipmap generation support - private boolean mipmap; - - // Whether smoothing is enabled for the OpenGL texture (switching - // between GL_LINEAR and GL_NEAREST filtering) - private boolean smoothing = true; - private boolean smoothingChanged; - - // The backing store itself - private BufferedImage image; - - private Texture texture; - private AWTTextureData textureData; - private boolean mustReallocateTexture; - private Rectangle dirtyRegion; - - private GLUgl2 glu = new GLUgl2(); - - // Current color - private float r = 1.0f; - private float g = 1.0f; - private float b = 1.0f; - private float a = 1.0f; - - /** Creates a new renderer with backing store of the specified width - and height. If <CODE>alpha</CODE> is true, allocates an alpha - channel in the backing store image. No mipmap support is - requested. - - @param width the width of the texture to render into - @param height the height of the texture to render into - @param alpha whether to allocate an alpha channel for the texture - */ - public TextureRenderer(int width, int height, boolean alpha) { - this(width, height, alpha, false); - } - - /** Creates a new renderer with backing store of the specified width - and height. If <CODE>alpha</CODE> is true, allocates an alpha channel in the - backing store image. If <CODE>mipmap</CODE> is true, attempts to use OpenGL's - automatic mipmap generation for better smoothing when rendering - the TextureRenderer's contents at a distance. - - @param width the width of the texture to render into - @param height the height of the texture to render into - @param alpha whether to allocate an alpha channel for the texture - @param mipmap whether to attempt use of automatic mipmap generation - */ - public TextureRenderer(int width, int height, boolean alpha, boolean mipmap) { - this(width, height, alpha, false, mipmap); - } - - // Internal constructor to avoid confusion since alpha only makes - // sense when intensity is not set - private TextureRenderer(int width, int height, boolean alpha, boolean intensity, boolean mipmap) { - this.alpha = alpha; - this.intensity = intensity; - this.mipmap = mipmap; - init(width, height); - } - - /** Creates a new renderer with a special kind of backing store - which acts only as an alpha channel. No mipmap support is - requested. Internally, this associates a GL_INTENSITY OpenGL - texture with the backing store. */ - public static TextureRenderer createAlphaOnlyRenderer(int width, int height) { - return createAlphaOnlyRenderer(width, height, false); - } - - /** Creates a new renderer with a special kind of backing store - which acts only as an alpha channel. If <CODE>mipmap</CODE> is - true, attempts to use OpenGL's automatic mipmap generation for - better smoothing when rendering the TextureRenderer's contents - at a distance. Internally, this associates a GL_INTENSITY OpenGL - texture with the backing store. */ - public static TextureRenderer createAlphaOnlyRenderer(int width, int height, boolean mipmap) { - return new TextureRenderer(width, height, false, true, mipmap); - } - - /** Returns the width of the backing store of this renderer. - - @return the width of the backing store of this renderer - */ - public int getWidth() { - return image.getWidth(); - } - - /** Returns the height of the backing store of this renderer. - - @return the height of the backing store of this renderer - */ - public int getHeight() { - return image.getHeight(); - } - - /** Returns the size of the backing store of this renderer in a - newly-allocated {@link java.awt.Dimension Dimension} object. - - @return the size of the backing store of this renderer - */ - public Dimension getSize() { - return getSize(null); - } - - /** Returns the size of the backing store of this renderer. Uses the - {@link java.awt.Dimension Dimension} object if one is supplied, - or allocates a new one if null is passed. - - @param d a {@link java.awt.Dimension Dimension} object in which - to store the results, or null to allocate a new one - - @return the size of the backing store of this renderer - */ - public Dimension getSize(Dimension d) { - if (d == null) - d = new Dimension(); - d.setSize(image.getWidth(), image.getHeight()); - return d; - } - - /** Sets the size of the backing store of this renderer. This may - cause the OpenGL texture object associated with this renderer to - be invalidated; it is not recommended to cache this texture - object outside this class but to instead call {@link #getTexture - getTexture} when it is needed. - - @param width the new width of the backing store of this renderer - @param height the new height of the backing store of this renderer - @throws GLException If an OpenGL context is not current when this method is called - */ - public void setSize(int width, int height) throws GLException { - init(width, height); - } - - /** Sets the size of the backing store of this renderer. This may - cause the OpenGL texture object associated with this renderer to - be invalidated. - - @param d the new size of the backing store of this renderer - @throws GLException If an OpenGL context is not current when this method is called - */ - public void setSize(Dimension d) throws GLException { - setSize(d.width, d.height); - } - - /** Sets whether smoothing is enabled for the OpenGL texture; if so, - uses GL_LINEAR interpolation for the minification and - magnification filters. Defaults to true. Changes to this setting - will not take effect until the next call to {@link - #beginOrthoRendering beginOrthoRendering}. - - @param smoothing whether smoothing is enabled for the OpenGL texture - */ - public void setSmoothing(boolean smoothing) { - this.smoothing = smoothing; - smoothingChanged = true; - } - - /** Returns whether smoothing is enabled for the OpenGL texture; see - {@link #setSmoothing setSmoothing}. Defaults to true. - - @return whether smoothing is enabled for the OpenGL texture - */ - public boolean getSmoothing() { - return smoothing; - } - - /** Creates a {@link java.awt.Graphics2D Graphics2D} instance for - rendering to the backing store of this renderer. The returned - object should be disposed of using the normal {@link - java.awt.Graphics#dispose() Graphics.dispose()} method once it - is no longer being used. - - @return a new {@link java.awt.Graphics2D Graphics2D} object for - rendering into the backing store of this renderer - */ - public Graphics2D createGraphics() { - return image.createGraphics(); - } - - /** Returns the underlying Java 2D {@link java.awt.Image Image} - being rendered into. */ - public Image getImage() { - return image; - } - - /** Marks the given region of the TextureRenderer as dirty. This - region, and any previously set dirty regions, will be - automatically synchronized with the underlying Texture during - the next {@link #getTexture getTexture} operation, at which - point the dirty region will be cleared. It is not necessary for - an OpenGL context to be current when this method is called. - - @param x the x coordinate (in Java 2D coordinates -- relative to - upper left) of the region to update - @param y the y coordinate (in Java 2D coordinates -- relative to - upper left) of the region to update - @param width the width of the region to update - @param height the height of the region to update - */ - public void markDirty(int x, int y, int width, int height) { - Rectangle curRegion = new Rectangle(x, y, width, height); - if (dirtyRegion == null) { - dirtyRegion = curRegion; - } else { - dirtyRegion.add(curRegion); - } - } - - /** Returns the underlying OpenGL Texture object associated with - this renderer, synchronizing any dirty regions of the - TextureRenderer with the underlying OpenGL texture. - - @throws GLException If an OpenGL context is not current when this method is called - */ - public Texture getTexture() throws GLException { - if (dirtyRegion != null) { - sync(dirtyRegion.x, dirtyRegion.y, dirtyRegion.width, dirtyRegion.height); - dirtyRegion = null; - } - - ensureTexture(); - return texture; - } - - /** Disposes all resources associated with this renderer. It is not - valid to use this renderer after calling this method. - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void dispose() throws GLException { - if (texture != null) { - texture.dispose(); - texture = null; - } - if (image != null) { - image.flush(); - image = null; - } - } - - /** Convenience method which assists in rendering portions of the - OpenGL texture to the screen, if the application intends to draw - them as a flat overlay on to the screen. Pushes OpenGL state - bits (GL_ENABLE_BIT, GL_DEPTH_BUFFER_BIT and GL_TRANSFORM_BIT); - disables the depth test, back-face culling, and lighting; - enables the texture in this renderer; and sets up the viewing - matrices for orthographic rendering where the coordinates go - from (0, 0) at the lower left to (width, height) at the upper - right. Equivalent to beginOrthoRendering(width, height, true). - {@link #endOrthoRendering} must be used in conjunction with this - method to restore all OpenGL states. - - @param width the width of the current on-screen OpenGL drawable - @param height the height of the current on-screen OpenGL drawable - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void beginOrthoRendering(int width, int height) throws GLException { - beginOrthoRendering(width, height, true); - } - - /** Convenience method which assists in rendering portions of the - OpenGL texture to the screen, if the application intends to draw - them as a flat overlay on to the screen. Pushes OpenGL state - bits (GL_ENABLE_BIT, GL_DEPTH_BUFFER_BIT and GL_TRANSFORM_BIT); - disables the depth test (if the "disableDepthTest" argument is - true), back-face culling, and lighting; enables the texture in - this renderer; and sets up the viewing matrices for orthographic - rendering where the coordinates go from (0, 0) at the lower left - to (width, height) at the upper right. {@link - #endOrthoRendering} must be used in conjunction with this method - to restore all OpenGL states. - - @param width the width of the current on-screen OpenGL drawable - @param height the height of the current on-screen OpenGL drawable - @param disableDepthTest whether the depth test should be disabled - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void beginOrthoRendering(int width, int height, boolean disableDepthTest) throws GLException { - beginRendering(true, width, height, disableDepthTest); - } - - /** Convenience method which assists in rendering portions of the - OpenGL texture to the screen as 2D quads in 3D space. Pushes - OpenGL state (GL_ENABLE_BIT); disables lighting; and enables the - texture in this renderer. Unlike {@link #beginOrthoRendering - beginOrthoRendering}, does not modify the depth test, back-face - culling, lighting, or the modelview or projection matrices. The - user is responsible for setting up the view matrices for correct - results of {@link #draw3DRect draw3DRect}. {@link - #end3DRendering} must be used in conjunction with this method to - restore all OpenGL states. - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void begin3DRendering() throws GLException { - beginRendering(false, 0, 0, false); - } - - /** Changes the color of the polygons, and therefore the drawn - images, this TextureRenderer produces. Use of this method is - optional. The TextureRenderer uses the GL_MODULATE texture - environment mode, which causes the portions of the rendered - texture to be multiplied by the color of the rendered - polygons. The polygon color can be varied to achieve effects - like tinting of the overall output or fading in and out by - changing the alpha of the color. <P> - - Each component ranges from 0.0f - 1.0f. The alpha component, if - used, does not need to be premultiplied into the color channels - as described in the documentation for {@link - com.sun.opengl.util.texture.Texture Texture}, although - premultiplied colors are used internally. The default color is - opaque white. - - @param r the red component of the new color - @param g the green component of the new color - @param b the blue component of the new color - @param a the alpha component of the new color, 0.0f = completely - transparent, 1.0f = completely opaque - @throws GLException If an OpenGL context is not current when this method is called - */ - public void setColor(float r, float g, float b, float a) throws GLException { - GL2 gl = GLContext.getCurrentGL().getGL2(); - this.r = r * a; - this.g = g * a; - this.b = b * a; - this.a = a; - - gl.glColor4f(this.r, this.g, this.b, this.a); - } - - private float[] compArray; - /** Changes the current color of this TextureRenderer to the - supplied one. The default color is opaque white. See {@link - #setColor(float,float,float,float) setColor} for more details. - - @param color the new color to use for rendering - @throws GLException If an OpenGL context is not current when this method is called - */ - public void setColor(Color color) throws GLException { - // Get color's RGBA components as floats in the range [0,1]. - if (compArray == null) { - compArray = new float[4]; - } - color.getRGBComponents(compArray); - setColor(compArray[0], compArray[1], compArray[2], compArray[3]); - } - - /** Draws an orthographically projected rectangle containing all of - the underlying texture to the specified location on the - screen. All (x, y) coordinates are specified relative to the - lower left corner of either the texture image or the current - OpenGL drawable. This method is equivalent to - <code>drawOrthoRect(screenx, screeny, 0, 0, getWidth(), - getHeight());</code>. - - @param screenx the on-screen x coordinate at which to draw the rectangle - @param screeny the on-screen y coordinate (relative to lower left) at - which to draw the rectangle - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void drawOrthoRect(int screenx, int screeny) throws GLException { - drawOrthoRect(screenx, screeny, 0, 0, getWidth(), getHeight()); - } - - /** Draws an orthographically projected rectangle of the underlying - texture to the specified location on the screen. All (x, y) - coordinates are specified relative to the lower left corner of - either the texture image or the current OpenGL drawable. - - @param screenx the on-screen x coordinate at which to draw the rectangle - @param screeny the on-screen y coordinate (relative to lower left) at - which to draw the rectangle - @param texturex the x coordinate of the pixel in the texture of - the lower left portion of the rectangle to draw - @param texturey the y coordinate of the pixel in the texture - (relative to lower left) of the lower left portion of the - rectangle to draw - @param width the width of the rectangle to draw - @param height the height of the rectangle to draw - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void drawOrthoRect(int screenx, int screeny, - int texturex, int texturey, - int width, int height) throws GLException { - draw3DRect(screenx, screeny, 0, texturex, texturey, width, height, 1); - } - - /** Draws a rectangle of the underlying texture to the specified 3D - location. In the current coordinate system, the lower left - corner of the rectangle is placed at (x, y, z), and the upper - right corner is placed at (x + width * scaleFactor, y + height * - scaleFactor, z). The lower left corner of the sub-rectangle of - the texture is (texturex, texturey) and the upper right corner - is (texturex + width, texturey + height). For back-face culling - purposes, the rectangle is drawn with counterclockwise - orientation of the vertices when viewed from the front. - - @param x the x coordinate at which to draw the rectangle - @param y the y coordinate at which to draw the rectangle - @param z the z coordinate at which to draw the rectangle - @param texturex the x coordinate of the pixel in the texture of - the lower left portion of the rectangle to draw - @param texturey the y coordinate of the pixel in the texture - (relative to lower left) of the lower left portion of the - rectangle to draw - @param width the width in texels of the rectangle to draw - @param height the height in texels of the rectangle to draw - @param scaleFactor the scale factor to apply (multiplicatively) - to the size of the drawn rectangle - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void draw3DRect(float x, float y, float z, - int texturex, int texturey, - int width, int height, - float scaleFactor) throws GLException { - GL2 gl = GLContext.getCurrentGL().getGL2(); - Texture texture = getTexture(); - TextureCoords coords = texture.getSubImageTexCoords(texturex, texturey, - texturex + width, - texturey + height); - gl.glBegin(GL2.GL_QUADS); - gl.glTexCoord2f(coords.left(), coords.bottom()); - gl.glVertex3f(x, y, z); - gl.glTexCoord2f(coords.right(), coords.bottom()); - gl.glVertex3f(x + width * scaleFactor, y, z); - gl.glTexCoord2f(coords.right(), coords.top()); - gl.glVertex3f(x + width * scaleFactor, y + height * scaleFactor, z); - gl.glTexCoord2f(coords.left(), coords.top()); - gl.glVertex3f(x, y + height * scaleFactor, z); - gl.glEnd(); - } - - /** Convenience method which assists in rendering portions of the - OpenGL texture to the screen, if the application intends to draw - them as a flat overlay on to the screen. Must be used if {@link - #beginOrthoRendering} is used to set up the rendering stage for - this overlay. - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void endOrthoRendering() throws GLException { - endRendering(true); - } - - /** Convenience method which assists in rendering portions of the - OpenGL texture to the screen as 2D quads in 3D space. Must be - used if {@link #begin3DRendering} is used to set up the - rendering stage for this overlay. - - @throws GLException If an OpenGL context is not current when this method is called - */ - public void end3DRendering() throws GLException { - endRendering(false); - } - - /** Indicates whether automatic mipmap generation is in use for this - TextureRenderer. The result of this method may change from true - to false if it is discovered during allocation of the - TextureRenderer's backing store that automatic mipmap generation - is not supported at the OpenGL level. */ - public boolean isUsingAutoMipmapGeneration() { - return mipmap; - } - - //---------------------------------------------------------------------- - // Internals only below this point - // - - private void beginRendering(boolean ortho, int width, int height, boolean disableDepthTestForOrtho) { - GL2 gl = GLContext.getCurrentGL().getGL2(); - int attribBits = - GL2.GL_ENABLE_BIT | GL2.GL_TEXTURE_BIT | GL2.GL_COLOR_BUFFER_BIT | - (ortho ? (GL2.GL_DEPTH_BUFFER_BIT | GL2.GL_TRANSFORM_BIT) : 0); - gl.glPushAttrib(attribBits); - gl.glDisable(GL2.GL_LIGHTING); - if (ortho) { - if (disableDepthTestForOrtho) { - gl.glDisable(GL2.GL_DEPTH_TEST); - } - gl.glDisable(GL2.GL_CULL_FACE); - gl.glMatrixMode(GL2.GL_PROJECTION); - gl.glPushMatrix(); - gl.glLoadIdentity(); - glu.gluOrtho2D(0, width, 0, height); - gl.glMatrixMode(GL2.GL_MODELVIEW); - gl.glPushMatrix(); - gl.glLoadIdentity(); - gl.glMatrixMode(GL2.GL_TEXTURE); - gl.glPushMatrix(); - gl.glLoadIdentity(); - } - gl.glEnable(GL2.GL_BLEND); - gl.glBlendFunc(GL2.GL_ONE, GL2.GL_ONE_MINUS_SRC_ALPHA); - Texture texture = getTexture(); - texture.enable(); - texture.bind(); - gl.glTexEnvi(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL2.GL_MODULATE); - // Change polygon color to last saved - gl.glColor4f(r, g, b, a); - if (smoothingChanged) { - smoothingChanged = false; - if (smoothing) { - texture.setTexParameteri(GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_LINEAR); - if (mipmap) { - texture.setTexParameteri(GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_LINEAR_MIPMAP_LINEAR); - } else { - texture.setTexParameteri(GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_LINEAR); - } - } else { - texture.setTexParameteri(GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST); - texture.setTexParameteri(GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST); - } - } - } - - private void endRendering(boolean ortho) { - GL2 gl = GLContext.getCurrentGL().getGL2(); - Texture texture = getTexture(); - texture.disable(); - if (ortho) { - gl.glMatrixMode(GL2.GL_PROJECTION); - gl.glPopMatrix(); - gl.glMatrixMode(GL2.GL_MODELVIEW); - gl.glPopMatrix(); - gl.glMatrixMode(GL2.GL_TEXTURE); - gl.glPopMatrix(); - } - gl.glPopAttrib(); - } - - private void init(int width, int height) { - GL2 gl = GLContext.getCurrentGL().getGL2(); - // Discard previous BufferedImage if any - if (image != null) { - image.flush(); - image = null; - } - - // Infer the internal format if not an intensity texture - int internalFormat = (intensity ? GL2.GL_INTENSITY : 0); - int imageType = - (intensity ? BufferedImage.TYPE_BYTE_GRAY : - (alpha ? BufferedImage.TYPE_INT_ARGB_PRE : BufferedImage.TYPE_INT_RGB)); - image = new BufferedImage(width, height, imageType); - // Always realllocate the TextureData associated with this - // BufferedImage; it's just a reference to the contents but we - // need it in order to update sub-regions of the underlying - // texture - textureData = new AWTTextureData(gl.getGLProfile(), internalFormat, 0, mipmap, image); - // For now, always reallocate the underlying OpenGL texture when - // the backing store size changes - mustReallocateTexture = true; - } - - /** Synchronizes the specified region of the backing store down to - the underlying OpenGL texture. If {@link #markDirty markDirty} - is used instead to indicate the regions that are out of sync, - this method does not need to be called. - - @param x the x coordinate (in Java 2D coordinates -- relative to - upper left) of the region to update - @param y the y coordinate (in Java 2D coordinates -- relative to - upper left) of the region to update - @param width the width of the region to update - @param height the height of the region to update - - @throws GLException If an OpenGL context is not current when this method is called - */ - private void sync(int x, int y, int width, int height) throws GLException { - // Force allocation if necessary - boolean canSkipUpdate = ensureTexture(); - - if (!canSkipUpdate) { - // Update specified region. - // NOTE that because BufferedImage-based TextureDatas now don't - // do anything to their contents, the coordinate systems for - // OpenGL and Java 2D actually line up correctly for - // updateSubImage calls, so we don't need to do any argument - // conversion here (i.e., flipping the Y coordinate). - texture.updateSubImage(textureData, 0, x, y, x, y, width, height); - } - } - - // Returns true if the texture was newly allocated, false if not - private boolean ensureTexture() { - if (mustReallocateTexture) { - if (texture != null) { - texture.dispose(); - texture = null; - } - mustReallocateTexture = false; - } - - if (texture == null) { - texture = TextureIO.newTexture(textureData); - if (mipmap && !texture.isUsingAutoMipmapGeneration()) { - // Only try this once - texture.dispose(); - mipmap = false; - textureData.setMipmap(false); - texture = TextureIO.newTexture(textureData); - } - - if (!smoothing) { - // The TextureIO classes default to GL_LINEAR filtering - texture.setTexParameteri(GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST); - texture.setTexParameteri(GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST); - } - return true; - } - - return false; - } -} |