X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;ds=sidebyside;f=retrace%2Fglretrace_ws.cpp;h=de9fe08c2c7ed4c471019502eb9dd19a5355ff91;hb=542dd3aeee89e112c8b7e73850f548cb07a4a972;hp=aeaadb77be0af415295df5ca39bfa1ef563d2c41;hpb=5ed4ca62e0b1236ff45e608d6b531a2181c6afbb;p=apitrace

diff --git a/retrace/glretrace_ws.cpp b/retrace/glretrace_ws.cpp
index aeaadb7..de9fe08 100644
--- a/retrace/glretrace_ws.cpp
+++ b/retrace/glretrace_ws.cpp
@@ -52,6 +52,10 @@ getVisual(glws::Profile profile) {
     glws::Visual * & visual = visuals[profile];
     if (!visual) {
         visual = glws::createVisual(retrace::doubleBuffer, profile);
+        if (!visual) {
+            std::cerr << "error: failed to create OpenGL visual\n";
+            exit(1);
+        }
     }
     return visual;
 }
@@ -68,29 +72,42 @@ getDefaultProfile(void)
 }
 
 
-glws::Drawable *
-createDrawable(glws::Profile profile) {
-    glws::Drawable *draw = glws::createDrawable(getVisual(profile));
+static glws::Drawable *
+createDrawableHelper(glws::Profile profile, int width = 32, int height = 32, bool pbuffer = false) {
+    glws::Visual *visual = getVisual(profile);
+    glws::Drawable *draw = glws::createDrawable(visual, width, height, pbuffer);
     if (!draw) {
         std::cerr << "error: failed to create OpenGL drawable\n";
         exit(1);
-        return NULL;
     }
 
     return draw;
 }
 
 
+glws::Drawable *
+createDrawable(glws::Profile profile) {
+    return createDrawableHelper(profile);
+}
+
+
 glws::Drawable *
 createDrawable(void) {
-    return glretrace::createDrawable(getDefaultProfile());
+    return createDrawable(getDefaultProfile());
+}
+
+
+glws::Drawable *
+createPbuffer(int width, int height) {
+    return createDrawableHelper(getDefaultProfile(), width, height, true);
 }
 
 
 Context *
 createContext(Context *shareContext, glws::Profile profile) {
+    glws::Visual *visual = getVisual(profile);
     glws::Context *shareWsContext = shareContext ? shareContext->wsContext : NULL;
-    glws::Context *ctx = glws::createContext(getVisual(profile), shareWsContext, profile, retrace::debug);
+    glws::Context *ctx = glws::createContext(visual, shareWsContext, profile, retrace::debug);
     if (!ctx) {
         std::cerr << "error: failed to create OpenGL context\n";
         exit(1);
@@ -170,6 +187,10 @@ updateDrawable(int width, int height) {
     glws::Drawable *currentDrawable = currentContext->drawable;
     assert(currentDrawable);
 
+    if (currentDrawable->pbuffer) {
+        return;
+    }
+
     if (currentDrawable->visible &&
         width  <= currentDrawable->width &&
         height <= currentDrawable->height) {