diff options
Diffstat (limited to 'src/net/java/games/jogl/impl/windows/WindowsPbufferGLContext.java')
| -rw-r--r-- | src/net/java/games/jogl/impl/windows/WindowsPbufferGLContext.java | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/src/net/java/games/jogl/impl/windows/WindowsPbufferGLContext.java b/src/net/java/games/jogl/impl/windows/WindowsPbufferGLContext.java new file mode 100644 index 000000000..300e9cb85 --- /dev/null +++ b/src/net/java/games/jogl/impl/windows/WindowsPbufferGLContext.java @@ -0,0 +1,413 @@ +/* + * Copyright (c) 2003 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 + * MIDROSYSTEMS, 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 net.java.games.jogl.impl.windows; + +import net.java.games.jogl.*; +import net.java.games.jogl.impl.*; + +public class WindowsPbufferGLContext extends WindowsGLContext { + private static final boolean DEBUG = false; + + private int initWidth; + private int initHeight; + + private long buffer; // pbuffer handle + private int width; + private int height; + + // FIXME: kept around because we create the OpenGL context lazily to + // better integrate with the WindowsGLContext framework + private long parentHglrc; + + private static final int MAX_PFORMATS = 256; + private static final int MAX_ATTRIBS = 256; + + // State for render-to-texture and render-to-texture-rectangle support + private boolean created; + private boolean rtt; // render-to-texture? + private boolean rect; // render-to-texture-rectangle? + private int textureTarget; // e.g. GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE_NV + private int texture; // actual texture object + + public WindowsPbufferGLContext(GLCapabilities capabilities, int initialWidth, int initialHeight) { + super(null, capabilities, null); + this.initWidth = initialWidth; + this.initHeight = initialHeight; + if (initWidth <= 0 || initHeight <= 0) { + throw new GLException("Initial width and height of pbuffer must be positive (were (" + + initWidth + ", " + initHeight + "))"); + } + } + + public boolean canCreatePbufferContext() { + return false; + } + + public GLContext createPbufferContext(GLCapabilities capabilities, + int initialWidth, + int initialHeight) { + throw new GLException("Not supported"); + } + + public void bindPbufferToTexture() { + if (!rtt) { + throw new GLException("Shouldn't try to bind a pbuffer to a texture if render-to-texture hasn't been " + + "specified in its GLCapabilities"); + } + GL gl = getGL(); + gl.glBindTexture(textureTarget, texture); + // Note: this test was on the rtt variable in NVidia's code but I + // think it doesn't make sense written that way + if (rect) { + if (!gl.wglBindTexImageARB(buffer, GL.WGL_FRONT_LEFT_ARB)) { + throw new GLException("Binding of pbuffer to texture failed: " + wglGetLastError()); + } + } + // Note that if the render-to-texture-rectangle extension is not + // specified, we perform a glCopyTexImage2D in swapBuffers(). + } + + public void releasePbufferFromTexture() { + if (!rtt) { + throw new GLException("Shouldn't try to bind a pbuffer to a texture if render-to-texture hasn't been " + + "specified in its GLCapabilities"); + } + if (rect) { + GL gl = getGL(); + if (!gl.wglReleaseTexImageARB(buffer, GL.WGL_FRONT_LEFT_ARB)) { + throw new GLException("Releasing of pbuffer from texture failed: " + wglGetLastError()); + } + } + } + + public void createPbuffer(long parentHdc, long parentHglrc) { + GL gl = getGL(); + + int[] iattributes = new int [2*MAX_ATTRIBS]; + float[] fattributes = new float[2*MAX_ATTRIBS]; + int nfattribs = 0; + int niattribs = 0; + + rtt = capabilities.getOffscreenRenderToTexture(); + rect = capabilities.getOffscreenRenderToTextureRectangle(); + boolean useFloat = capabilities.getOffscreenFloatingPointBuffers(); + + // Since we are trying to create a pbuffer, the pixel format we + // request (and subsequently use) must be "p-buffer capable". + iattributes[niattribs++] = GL.WGL_DRAW_TO_PBUFFER_ARB; + iattributes[niattribs++] = GL.GL_TRUE; + + if (!rtt) { + // Currently we don't support non-truecolor visuals in the + // GLCapabilities, so we don't offer the option of making + // color-index pbuffers. + iattributes[niattribs++] = GL.WGL_PIXEL_TYPE_ARB; + iattributes[niattribs++] = GL.WGL_TYPE_RGBA_ARB; + } + + iattributes[niattribs++] = GL.WGL_DOUBLE_BUFFER_ARB; + if (capabilities.getDoubleBuffered()) { + iattributes[niattribs++] = GL.GL_TRUE; + } else { + iattributes[niattribs++] = GL.GL_FALSE; + } + + iattributes[niattribs++] = GL.WGL_DEPTH_BITS_ARB; + iattributes[niattribs++] = capabilities.getDepthBits(); + + iattributes[niattribs++] = GL.WGL_RED_BITS_ARB; + iattributes[niattribs++] = capabilities.getRedBits(); + + iattributes[niattribs++] = GL.WGL_GREEN_BITS_ARB; + iattributes[niattribs++] = capabilities.getGreenBits(); + + iattributes[niattribs++] = GL.WGL_BLUE_BITS_ARB; + iattributes[niattribs++] = capabilities.getBlueBits(); + + iattributes[niattribs++] = GL.WGL_ALPHA_BITS_ARB; + iattributes[niattribs++] = capabilities.getAlphaBits(); + + iattributes[niattribs++] = GL.WGL_STENCIL_BITS_ARB; + if (capabilities.getStencilBits() > 0) { + iattributes[niattribs++] = GL.GL_TRUE; + } else { + iattributes[niattribs++] = GL.GL_FALSE; + } + + if (capabilities.getAccumRedBits() > 0 || + capabilities.getAccumGreenBits() > 0 || + capabilities.getAccumBlueBits() > 0) { + iattributes[niattribs++] = GL.WGL_ACCUM_BITS_ARB; + iattributes[niattribs++] = GL.GL_TRUE; + } + + if (useFloat) { + iattributes[niattribs++] = GL.WGL_FLOAT_COMPONENTS_NV; + iattributes[niattribs++] = GL.GL_TRUE; + } + + if (rtt) { + if (useFloat) { + iattributes[niattribs++] = GL.WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV; + iattributes[niattribs++] = GL.GL_TRUE; + } else { + iattributes[niattribs++] = rect ? GL.WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV : GL.WGL_BIND_TO_TEXTURE_RGB_ARB; + iattributes[niattribs++] = GL.GL_TRUE; + } + } + + iattributes[niattribs++] = GL.WGL_SUPPORT_OPENGL_ARB; + iattributes[niattribs++] = GL.GL_TRUE; + + int[] pformats = new int[MAX_PFORMATS]; + int nformats; + int[] nformatsTmp = new int[1]; + if (!gl.wglChoosePixelFormatARB(parentHdc, + iattributes, + fattributes, + MAX_PFORMATS, + pformats, + nformatsTmp)) { + throw new GLException("pbuffer creation error: wglChoosePixelFormatARB() failed"); + } + nformats = nformatsTmp[0]; + if (nformats <= 0) { + throw new GLException("pbuffer creation error: Couldn't find a suitable pixel format"); + } + + if (DEBUG) { + System.err.println("" + nformats + " suitable pixel formats found"); + // query pixel format + iattributes[0] = GL.WGL_RED_BITS_ARB; + iattributes[1] = GL.WGL_GREEN_BITS_ARB; + iattributes[2] = GL.WGL_BLUE_BITS_ARB; + iattributes[3] = GL.WGL_ALPHA_BITS_ARB; + iattributes[4] = GL.WGL_DEPTH_BITS_ARB; + iattributes[5] = GL.WGL_FLOAT_COMPONENTS_NV; + iattributes[6] = GL.WGL_SAMPLE_BUFFERS_EXT; + iattributes[7] = GL.WGL_SAMPLES_EXT; + int[] ivalues = new int[8]; + for (int i = 0; i < nformats; i++) { + if (!gl.wglGetPixelFormatAttribivARB(parentHdc, pformats[i], 0, 8, iattributes, ivalues)) { + throw new GLException("Error while querying pixel format " + pformats[i] + + "'s (index " + i + "'s) capabilities for debugging"); + } + System.err.print("pixel format " + pformats[i] + " (index " + i + "): "); + System.err.print( "r: " + ivalues[0]); + System.err.print(" g: " + ivalues[1]); + System.err.print(" b: " + ivalues[2]); + System.err.print(" a: " + ivalues[3]); + System.err.print(" depth: " + ivalues[4]); + System.err.print(" multisample: " + ivalues[6]); + System.err.print(" samples: " + ivalues[7]); + if (ivalues[5] != 0) { + System.err.print(" [float]"); + } + System.err.println(); + } + } + + int format = pformats[0]; + + // Create the p-buffer. + niattribs = 0; + + if (rtt) { + iattributes[niattribs++] = GL.WGL_TEXTURE_FORMAT_ARB; + if (useFloat) { + iattributes[niattribs++] = GL.WGL_TEXTURE_FLOAT_RGB_NV; + } else { + iattributes[niattribs++] = GL.WGL_TEXTURE_RGBA_ARB; + } + + iattributes[niattribs++] = GL.WGL_TEXTURE_TARGET_ARB; + iattributes[niattribs++] = rect ? GL.WGL_TEXTURE_RECTANGLE_NV : GL.WGL_TEXTURE_2D_ARB; + + iattributes[niattribs++] = GL.WGL_MIPMAP_TEXTURE_ARB; + iattributes[niattribs++] = GL.GL_FALSE; + + iattributes[niattribs++] = GL.WGL_PBUFFER_LARGEST_ARB; + iattributes[niattribs++] = GL.GL_FALSE; + } + + iattributes[niattribs++] = 0; + + long tmpBuffer = gl.wglCreatePbufferARB(parentHdc, format, initWidth, initHeight, iattributes); + if (tmpBuffer == 0) { + throw new GLException("pbuffer creation error: wglCreatePbufferARB() failed: " + wglGetLastError()); + } + + // Get the device context. + long tmpHdc = gl.wglGetPbufferDCARB(tmpBuffer); + if (tmpHdc == 0) { + throw new GLException("pbuffer creation error: wglGetPbufferDCARB() failed"); + } + + this.parentHglrc = parentHglrc; + + // Set up instance variables + buffer = tmpBuffer; + hdc = tmpHdc; + + // Determine the actual width and height we were able to create. + int[] tmp = new int[1]; + gl.wglQueryPbufferARB( buffer, GL.WGL_PBUFFER_WIDTH_ARB, tmp ); + width = tmp[0]; + gl.wglQueryPbufferARB( buffer, GL.WGL_PBUFFER_HEIGHT_ARB, tmp ); + height = tmp[0]; + + if (DEBUG) { + System.err.println("Created pbuffer " + width + " x " + height); + } + } + + protected synchronized boolean makeCurrent(Runnable initAction) throws GLException { + created = false; + + if (buffer == 0) { + // pbuffer not instantiated yet + return false; + } + + boolean res = super.makeCurrent(initAction); + if (created) { + // Initialize render-to-texture support if requested + rtt = capabilities.getOffscreenRenderToTexture(); + rect = capabilities.getOffscreenRenderToTextureRectangle(); + + if (rtt) { + if (DEBUG) { + System.err.println("Initializing render-to-texture support"); + } + + GL gl = getGL(); + if (rect && !gl.isExtensionAvailable("GL_NV_texture_rectangle")) { + System.err.println("WindowsPbufferGLContext: WARNING: GL_NV_texture_rectangle extension not " + + "supported; skipping requested render_to_texture_rectangle support for pbuffer"); + rect = false; + } + if (rect) { + if (DEBUG) { + System.err.println(" Using render-to-texture-rectangle"); + } + textureTarget = GL.GL_TEXTURE_RECTANGLE_NV; + } else { + if (DEBUG) { + System.err.println(" Using vanilla render-to-texture"); + } + textureTarget = GL.GL_TEXTURE_2D; + } + int[] tmp = new int[1]; + gl.glGenTextures(1, tmp); + texture = tmp[0]; + gl.glBindTexture(textureTarget, texture); + gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST); + gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST); + gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE); + gl.glTexParameteri(textureTarget, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE); + gl.glCopyTexImage2D(textureTarget, 0, GL.GL_RGB, 0, 0, width, height, 0); + } + } + return res; + } + + public void handleModeSwitch(long parentHdc, long parentHglrc) { + throw new GLException("Not yet implemented"); + } + + protected boolean isOffscreen() { + // FIXME: currently the only caller of this won't cause proper + // resizing of the pbuffer anyway. + return false; + } + + public int getOffscreenContextBufferedImageType() { + throw new GLException("Should not call this"); + } + + public int getOffscreenContextReadBuffer() { + throw new GLException("Should not call this"); + } + + public boolean offscreenImageNeedsVerticalFlip() { + throw new GLException("Should not call this"); + } + + protected void create() { + created = true; + // Create a gl context for the p-buffer. + hglrc = WGL.wglCreateContext(hdc); + if (hglrc == 0) { + throw new GLException("pbuffer creation error: wglCreateContext() failed"); + } + + // FIXME: provide option to not share display lists with subordinate pbuffer? + if (!WGL.wglShareLists(parentHglrc, hglrc)) { + throw new GLException("pbuffer: wglShareLists() failed"); + } + } + + protected void swapBuffers() throws GLException { + // FIXME: do we need to do anything if the pbuffer is double-buffered? + // For now, just grab the pixels for the render-to-texture support. + if (rtt && !rect) { + if (DEBUG) { + System.err.println("Copying pbuffer data to GL_TEXTURE_2D state"); + } + + GL gl = getGL(); + gl.glCopyTexImage2D(textureTarget, 0, GL.GL_RGB, 0, 0, width, height, 0); + } + } + + private String wglGetLastError() { + int err = WGL.GetLastError(); + String detail = null; + switch (err) { + case WGL.ERROR_INVALID_PIXEL_FORMAT: detail = "ERROR_INVALID_PIXEL_FORMAT"; break; + case WGL.ERROR_NO_SYSTEM_RESOURCES: detail = "ERROR_NO_SYSTEM_RESOURCES"; break; + case WGL.ERROR_INVALID_DATA: detail = "ERROR_INVALID_DATA"; break; + case WGL.ERROR_PROC_NOT_FOUND: detail = "ERROR_PROC_NOT_FOUND"; break; + case WGL.ERROR_INVALID_WINDOW_HANDLE:detail = "ERROR_INVALID_WINDOW_HANDLE"; break; + default: detail = "(Unknown error code " + err + ")"; break; + } + return detail; + } +} |