Cleanup glretrace<->glws integration.

[apitrace] / retrace / glretrace_ws.cpp

diff --git a/retrace/glretrace_ws.cpp b/retrace/glretrace_ws.cpp
new file mode 100644 (file)
index 0000000..47b1369
--- /dev/null
+++ b/retrace/glretrace_ws.cpp
@@ -0,0 +1,183 @@
+/**************************************************************************
+ *
+ * Copyright 2011-2012 Jose Fonseca
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/**
+ * Window system helpers for glretrace.
+ */
+
+
+#include <string.h>
+
+#include "retrace.hpp"
+#include "glproc.hpp"
+#include "glstate.hpp"
+#include "glretrace.hpp"
+
+
+namespace glretrace {
+
+
+glws::Drawable *currentDrawable = NULL;
+glws::Context *currentContext = NULL;
+
+
+static glws::Visual *
+visuals[glws::PROFILE_MAX];
+
+
+inline glws::Visual *
+getVisual(glws::Profile profile) {
+    glws::Visual * & visual = visuals[profile];
+    if (!visual) {
+        visual = glws::createVisual(retrace::doubleBuffer, profile);
+    }
+    return visual;
+}
+
+
+inline glws::Profile
+getDefaultProfile(void)
+{
+    if (retrace::coreProfile) {
+        return glws::PROFILE_CORE;
+    } else {
+        return glws::PROFILE_COMPAT;
+    }
+}
+
+
+glws::Drawable *
+createDrawable(glws::Profile profile) {
+    glws::Drawable *draw = glws::createDrawable(getVisual(profile));
+    if (!draw) {
+        std::cerr << "error: failed to create OpenGL drawable\n";
+        exit(1);
+        return NULL;
+    }
+
+    return draw;
+}
+
+
+glws::Drawable *
+createDrawable(void) {
+    return glretrace::createDrawable(getDefaultProfile());
+}
+
+
+glws::Context *
+createContext(glws::Context *shareContext, glws::Profile profile) {
+    glws::Context *ctx = glws::createContext(getVisual(profile), shareContext, profile, retrace::debug);
+    if (!ctx) {
+        std::cerr << "error: failed to create OpenGL context\n";
+        exit(1);
+        return NULL;
+    }
+
+    return ctx;
+}
+
+
+glws::Context *
+createContext(glws::Context *shareContext) {
+    return createContext(shareContext, getDefaultProfile());
+}
+
+
+bool
+makeCurrent(trace::Call &call, glws::Drawable *drawable, glws::Context *context)
+{
+    if (drawable == currentDrawable && context == currentContext) {
+        return true;
+    }
+
+    if (currentDrawable && currentContext) {
+        glFlush();
+        if (!retrace::doubleBuffer) {
+            frame_complete(call);
+        }
+    }
+
+    bool success = glws::makeCurrent(drawable, context);
+
+    if (!success) {
+        std::cerr << "error: failed to make current OpenGL context and drawable\n";
+        exit(1);
+        return false;
+    }
+
+    if (drawable && context) {
+        currentDrawable = drawable;
+        currentContext = context;
+    } else {
+        currentDrawable = NULL;
+        currentContext = NULL;
+    }
+
+    return true;
+}
+
+
+
+
+/**
+ * Grow the current drawble.
+ *
+ * We need to infer the drawable size from GL calls because the drawable sizes
+ * are specified by OS specific calls which we do not trace.
+ */
+void
+updateDrawable(int width, int height) {
+    if (!currentDrawable) {
+        return;
+    }
+
+    if (!currentDrawable->visible &&
+        width  <= currentDrawable->width &&
+        height <= currentDrawable->height) {
+        return;
+    }
+
+    // Ignore zero area viewports
+    if (width == 0 || height == 0) {
+        return;
+    }
+
+    // Check for bound framebuffer last, as this may have a performance impact.
+    GLint draw_framebuffer = 0;
+    glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &draw_framebuffer);
+    if (draw_framebuffer != 0) {
+        return;
+    }
+
+    currentDrawable->resize(width, height);
+    currentDrawable->show();
+
+    glScissor(0, 0, width, height);
+}
+
+
+} /* namespace glretrace */