From 3dc7a014af0e9a0a409bea49c2d8f6b0010cafb4 Mon Sep 17 00:00:00 2001
From: Kenneth Russel <kbrussel@alum.mit.edu>
Date: Tue, 6 Dec 2005 19:28:31 +0000
Subject: Refactored code on Windows and X11 constructing attribute lists for
wglChoosePixelFormatARB / glXChooseVisual / glXChooseFBConfig to unify code
paths between on-screen drawables and pbuffers. This primarily enables
multisampling for pbuffers. Made small change to Mac native code to stop
specifying sample buffers if multisampling is not enabled. Tested with demos
on Windows and X11.
git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@484 232f8b59-042b-4e1e-8c03-345bb8c30851
---
.../impl/windows/WindowsPbufferGLDrawable.java | 122 +++------------------
1 file changed, 13 insertions(+), 109 deletions(-)
(limited to 'src/classes/com/sun/opengl/impl/windows/WindowsPbufferGLDrawable.java')
diff --git a/src/classes/com/sun/opengl/impl/windows/WindowsPbufferGLDrawable.java b/src/classes/com/sun/opengl/impl/windows/WindowsPbufferGLDrawable.java
index 3874edfd6..1543f420d 100644
--- a/src/classes/com/sun/opengl/impl/windows/WindowsPbufferGLDrawable.java
+++ b/src/classes/com/sun/opengl/impl/windows/WindowsPbufferGLDrawable.java
@@ -143,9 +143,9 @@ public class WindowsPbufferGLDrawable extends WindowsGLDrawable {
private void createPbuffer(long parentHdc, WGLExt wglExt) {
int[] iattributes = new int [2*MAX_ATTRIBS];
- float[] fattributes = new float[2*MAX_ATTRIBS];
- int nfattribs = 0;
- int niattribs = 0;
+ float[] fattributes = new float[1];
+ int[] floatModeTmp = new int[1];
+ int niattribs = 0;
if (DEBUG) {
System.out.println("Pbuffer parentHdc = " + toHexString(parentHdc));
@@ -155,120 +155,24 @@ public class WindowsPbufferGLDrawable extends WindowsGLDrawable {
(capabilities.getOffscreenFloatingPointBuffers() ? " [float]" : ""));
}
+ if (!glCapabilities2iattributes(capabilities,
+ iattributes,
+ wglExt,
+ true,
+ floatModeTmp)) {
+ throw new GLException("Pbuffer-related extensions not supported");
+ }
+
+ floatMode = floatModeTmp[0];
boolean rtt = capabilities.getOffscreenRenderToTexture();
boolean rect = capabilities.getOffscreenRenderToTextureRectangle();
boolean useFloat = capabilities.getOffscreenFloatingPointBuffers();
boolean ati = false;
-
- // Since we are trying to create a pbuffer, the pixel format we
- // request (and subsequently use) must be "p-buffer capable".
- iattributes[niattribs++] = WGLExt.WGL_DRAW_TO_PBUFFER_ARB;
- iattributes[niattribs++] = GL.GL_TRUE;
-
- if (rtt && !rect) {
- throw new GLException("Render-to-texture-rectangle requires render-to-texture to be specified");
- }
-
- if (rect) {
- if (!wglExt.isExtensionAvailable("GL_NV_texture_rectangle")) {
- throw new GLException("Render-to-texture-rectangle requires GL_NV_texture_rectangle extension");
- }
- }
if (useFloat) {
- if (!wglExt.isExtensionAvailable("WGL_ATI_pixel_format_float") &&
- !wglExt.isExtensionAvailable("WGL_NV_float_buffer")) {
- throw new GLException("Floating-point pbuffers not supported by this hardware");
- }
-
- // Prefer NVidia extension over ATI
- if (wglExt.isExtensionAvailable("WGL_NV_float_buffer")) {
- ati = false;
- floatMode = GLPbuffer.NV_FLOAT;
- } else {
- ati = true;
- floatMode = GLPbuffer.ATI_FLOAT;
- }
- if (DEBUG) {
- System.err.println("Using " + (ati ? "ATI" : "NVidia") + " floating-point extension");
- }
- }
-
- if (useFloat && ati) {
- if (rtt) {
- throw new GLException("Render-to-floating-point-texture not supported on ATI hardware");
- } else {
- iattributes[niattribs++] = WGLExt.WGL_PIXEL_TYPE_ARB;
- iattributes[niattribs++] = WGLExt.WGL_TYPE_RGBA_FLOAT_ATI;
- }
- } else {
- 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++] = WGLExt.WGL_PIXEL_TYPE_ARB;
- iattributes[niattribs++] = WGLExt.WGL_TYPE_RGBA_ARB;
- }
- }
-
- iattributes[niattribs++] = WGLExt.WGL_DOUBLE_BUFFER_ARB;
- if (capabilities.getDoubleBuffered()) {
- iattributes[niattribs++] = GL.GL_TRUE;
- } else {
- iattributes[niattribs++] = GL.GL_FALSE;
- }
-
- iattributes[niattribs++] = WGLExt.WGL_DEPTH_BITS_ARB;
- iattributes[niattribs++] = capabilities.getDepthBits();
-
- iattributes[niattribs++] = WGLExt.WGL_RED_BITS_ARB;
- iattributes[niattribs++] = capabilities.getRedBits();
-
- iattributes[niattribs++] = WGLExt.WGL_GREEN_BITS_ARB;
- iattributes[niattribs++] = capabilities.getGreenBits();
-
- iattributes[niattribs++] = WGLExt.WGL_BLUE_BITS_ARB;
- iattributes[niattribs++] = capabilities.getBlueBits();
-
- iattributes[niattribs++] = WGLExt.WGL_ALPHA_BITS_ARB;
- iattributes[niattribs++] = capabilities.getAlphaBits();
-
- iattributes[niattribs++] = WGLExt.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++] = WGLExt.WGL_ACCUM_BITS_ARB;
- iattributes[niattribs++] = GL.GL_TRUE;
- }
-
- if (useFloat && !ati) {
- iattributes[niattribs++] = WGLExt.WGL_FLOAT_COMPONENTS_NV;
- iattributes[niattribs++] = GL.GL_TRUE;
- }
-
- if (rtt) {
- if (useFloat) {
- assert(!ati);
- if (!rect) {
- throw new GLException("Render-to-floating-point-texture only supported on NVidia hardware with render-to-texture-rectangle");
- }
- iattributes[niattribs++] = WGLExt.WGL_BIND_TO_TEXTURE_RECTANGLE_FLOAT_RGB_NV;
- iattributes[niattribs++] = GL.GL_TRUE;
- } else {
- iattributes[niattribs++] = rect ? WGLExt.WGL_BIND_TO_TEXTURE_RECTANGLE_RGB_NV : WGLExt.WGL_BIND_TO_TEXTURE_RGB_ARB;
- iattributes[niattribs++] = GL.GL_TRUE;
- }
+ ati = (floatMode == GLPbuffer.ATI_FLOAT);
}
- iattributes[niattribs++] = WGLExt.WGL_SUPPORT_OPENGL_ARB;
- iattributes[niattribs++] = GL.GL_TRUE;
-
int[] pformats = new int[MAX_PFORMATS];
int nformats;
int[] nformatsTmp = new int[1];
--
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