XQuartz: GL: Provide code for getting the capabilities of the underlying system's CGL.

Add a setVisualConfigs that is called before the fbScreenInit, to setup the __GLXvisualConfigs. (cherry picked from commit fc86f9e4482043eca76d9d7a96e166be1aabf674)
author: George Staplin <georgestaplin@george-staplins-mac-pro.local> 2008-10-06 18:01:23 -0600
committer: Jeremy Huddleston <jeremyhu@freedesktop.org> 2008-10-08 18:44:21 -0700
commit: a8f5d422c9c0a39f55e80bbd180439b6ec3a805c (patch)
tree: 82a67a2265fdf0a9feed279583d20ea8b619c792 /hw/xquartz/GL
parent: 2998e48be343ab2a11d6d328fc961ab5b8eb9292 (diff)
4 files changed, 225 insertions, 0 deletions
diff --git a/hw/xquartz/GL/capabilities.c b/hw/xquartz/GL/capabilities.c
new file mode 100644
index 000000000..3a540258b
--- /dev/null
+++ b/hw/xquartz/GL/capabilities.c
@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <OpenGL/OpenGL.h>
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#include <OpenGL/glext.h>
+#include <ApplicationServices/ApplicationServices.h>
+
+#include "capabilities.h"
+
+//#define DIAGNOSTIC 0
+
+static void handleBufferModes(struct glCapabilities *cap, GLint bufferModes) {
+    if(bufferModes & kCGLStereoscopicBit) {
+	cap->stereo = true;
+    }
+
+    if(bufferModes & kCGLDoubleBufferBit) {
+	cap->buffers = 2;
+    } else {
+	cap->buffers = 1;
+    }
+}
+
+static void initCapabilities(struct glCapabilities *cap) {
+    cap->stereo = cap->buffers = cap->aux_buffers = 0;
+}
+
+enum {
+    MAX_DISPLAYS = 32
+};
+
+/*Return true if an error occured. */
+bool getGlCapabilities(struct glCapabilities *cap) {
+    CGDirectDisplayID dspys[MAX_DISPLAYS];
+    CGDisplayErr err;
+    CGOpenGLDisplayMask displayMask;
+    CGDisplayCount i, displayCount = 0;
+
+    initCapabilities(cap);
+    
+    err = CGGetActiveDisplayList(MAX_DISPLAYS, dspys, &displayCount);
+    if(err) {
+#ifdef DIAGNOSTIC
+	fprintf(stderr, "CGGetActiveDisplayList %s\n", CGLErrorString (err));
+#endif
+	return true;
+    }
+ 
+    for(i = 0; i < displayCount; ++i) {
+        displayMask = CGDisplayIDToOpenGLDisplayMask(dspys[i]);
+       
+	CGLRendererInfoObj info;
+	GLint numRenderers = 0, r, accelerated = 0, flags = 0, aux = 0;
+    
+	err = CGLQueryRendererInfo (displayMask, &info, &numRenderers);
+        if(!err) {
+            CGLDescribeRenderer (info, 0, kCGLRPRendererCount, &numRenderers);
+            for(r = 0; r < numRenderers; ++r) {
+                // find accelerated renderer (assume only one)
+                CGLDescribeRenderer (info, r, kCGLRPAccelerated, &accelerated);
+                if(accelerated) {
+                    err = CGLDescribeRenderer(info, r, kCGLRPBufferModes, &flags);
+		    if(err) {
+			CGLDestroyRendererInfo(info);
+			return true;
+		    }
+
+		    handleBufferModes(cap, flags);
+
+		    err = CGLDescribeRenderer(info, r, kCGLRPMaxAuxBuffers, &aux);
+		    if(err) {
+			CGLDestroyRendererInfo(info);
+			return true;
+		    }
+
+		    cap->aux_buffers = aux;
+                }
+            }
+	    CGLDestroyRendererInfo(info);
+	}
+    }
+
+    /* No error occured.  We are done. */
+    return false;
+}
diff --git a/hw/xquartz/GL/capabilities.h b/hw/xquartz/GL/capabilities.h
new file mode 100644
index 000000000..74487be89
--- /dev/null
+++ b/hw/xquartz/GL/capabilities.h
@@ -0,0 +1,15 @@
+#ifndef CAPABILITIES_H
+#define CAPABILITIES_H
+
+#include <stdbool.h>
+
+struct glCapabilities {
+    int stereo;
+    int aux_buffers;
+    int buffers;
+    /*TODO handle STENCIL and ACCUM*/
+};
+
+bool getGlCapabilities(struct glCapabilities *cap);
+
+#endif
diff --git a/hw/xquartz/GL/visualConfigs.c b/hw/xquartz/GL/visualConfigs.c
new file mode 100644
index 000000000..05dfa19b1
--- /dev/null
+++ b/hw/xquartz/GL/visualConfigs.c
@@ -0,0 +1,118 @@
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "dri.h"
+
+#include <OpenGL/OpenGL.h>
+#include <OpenGL/CGLContext.h>
+
+#include <GL/gl.h>
+#include <GL/glxproto.h>
+#include <windowstr.h>
+#include <resource.h>
+#include <GL/glxint.h>
+#include <GL/glxtokens.h>
+#include <scrnintstr.h>
+#include <glxserver.h>
+#include <glxscreens.h>
+#include <glxdrawable.h>
+#include <glxcontext.h>
+#include <glxext.h>
+#include <glxutil.h>
+#include <glxscreens.h>
+#include <GL/internal/glcore.h>
+
+#include "capabilities.h"
+#include "visualConfigs.h"
+
+extern BOOL enable_stereo;
+
+void setVisualConfigs(void) {
+    int numConfigs = 0;
+    __GLXvisualConfig *visualConfigs = NULL;
+    void **visualPrivates = NULL;
+    struct glCapabilities caps[1];
+    int stereo, depth, aux, buffers, stencil, accum;
+    int i = 0; 
+
+    if(getGlCapabilities(caps)) {
+	ErrorF("error from getGlCapabilities()!\n");
+	return;
+    }
+    
+    /* count num configs:
+        2 stereo (on, off) (optional)
+        2 Z buffer (0, 24 bit)
+        2 AUX buffer (0, 2)
+        2 buffers (single, double)
+        2 stencil (0, 8 bit)
+        2 accum (0, 64 bit)
+        = 64 configs with stereo, or 32 without */
+
+    numConfigs = ((enable_stereo && caps->stereo) ? 2 : 1) * 2 * 
+	(caps->aux_buffers ? 2 : 1) * (caps->buffers) * 2 * 2;
+
+    visualConfigs = xcalloc(sizeof(*visualConfigs), numConfigs);
+    visualPrivates = xcalloc(sizeof(void *), numConfigs);
+
+    if (NULL != visualConfigs) {
+        i = 0; /* current buffer */
+        for (stereo = 0; stereo < ((enable_stereo && caps->stereo) ? 2 : 1); ++stereo) {
+	    for (depth = 0; depth < 2; ++depth) {
+		for (aux = 0; aux < (caps->aux_buffers ? 2 : 1); ++aux) {
+		    for (buffers = 0; buffers < caps->buffers; ++buffers) {
+			for (stencil = 0; stencil < 2; ++stencil) {
+			    for (accum = 0; accum < 2; ++accum) {
+				visualConfigs[i].vid = -1;
+				visualConfigs[i].class = -1;
+				visualConfigs[i].rgba = TRUE;
+				visualConfigs[i].redSize = -1;
+				visualConfigs[i].greenSize = -1;
+				visualConfigs[i].blueSize = -1;
+				visualConfigs[i].redMask = -1;
+				visualConfigs[i].greenMask = -1;
+				visualConfigs[i].blueMask = -1;
+				visualConfigs[i].alphaMask = 0;
+				if (accum) {
+				    visualConfigs[i].accumRedSize = 16;
+				    visualConfigs[i].accumGreenSize = 16;
+				    visualConfigs[i].accumBlueSize = 16;
+				    visualConfigs[i].accumAlphaSize = 16;
+				} else {
+				    visualConfigs[i].accumRedSize = 0;
+				    visualConfigs[i].accumGreenSize = 0;
+				    visualConfigs[i].accumBlueSize = 0;
+				    visualConfigs[i].accumAlphaSize = 0;
+				}
+				visualConfigs[i].doubleBuffer = buffers ? TRUE : FALSE;
+				visualConfigs[i].stereo = stereo ? TRUE : FALSE;
+				visualConfigs[i].bufferSize = -1;
+                    
+				visualConfigs[i].depthSize = depth? 24 : 0;
+				visualConfigs[i].stencilSize = stencil ? 8 : 0;
+				visualConfigs[i].auxBuffers = aux ? caps->aux_buffers : 0;
+				visualConfigs[i].level = 0;
+				visualConfigs[i].visualRating = GLX_NONE_EXT;
+				visualConfigs[i].transparentPixel = 0;
+				visualConfigs[i].transparentRed = 0;
+				visualConfigs[i].transparentGreen = 0;
+				visualConfigs[i].transparentBlue = 0;
+				visualConfigs[i].transparentAlpha = 0;
+				visualConfigs[i].transparentIndex = 0;
+				++i;
+			    }
+			}
+		    }
+		}
+	    }
+        }
+    }
+
+    if (i != numConfigs) {
+	ErrorF("numConfigs calculation error in setVisualConfigs!\n");
+	abort();
+    }
+
+    GlxSetVisualConfigs(numConfigs, visualConfigs, visualPrivates);
+}
diff --git a/hw/xquartz/GL/visualConfigs.h b/hw/xquartz/GL/visualConfigs.h
new file mode 100644
index 000000000..f9cd8861b
--- /dev/null
+++ b/hw/xquartz/GL/visualConfigs.h
@@ -0,0 +1,6 @@
+#ifndef VISUAL_CONFIGS_H
+#define VISUAL_CONFIGS_H
+
+void setVisualConfigs(void);
+
+#endif
author	George Staplin <georgestaplin@george-staplins-mac-pro.local>	2008-10-06 18:01:23 -0600
committer	Jeremy Huddleston <jeremyhu@freedesktop.org>	2008-10-08 18:44:21 -0700
commit	a8f5d422c9c0a39f55e80bbd180439b6ec3a805c (patch)
tree	82a67a2265fdf0a9feed279583d20ea8b619c792 /hw/xquartz/GL
parent	2998e48be343ab2a11d6d328fc961ab5b8eb9292 (diff)