Move retracers to their own directory.

[apitrace] / retrace / glstate.cpp

diff --git a/retrace/glstate.cpp b/retrace/glstate.cpp
new file mode 100644 (file)
index 0000000..0d5a5f3
--- /dev/null
+++ b/retrace/glstate.cpp
@@ -0,0 +1,155 @@
+/**************************************************************************
+ *
+ * Copyright 2011 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.
+ *
+ **************************************************************************/
+
+
+#include <string.h>
+
+#include <algorithm>
+#include <iostream>
+
+#include "image.hpp"
+#include "json.hpp"
+#include "glproc.hpp"
+#include "glsize.hpp"
+#include "glstate.hpp"
+#include "glstate_internal.hpp"
+
+
+namespace glstate {
+
+
+Context::Context(void) {
+    memset(this, 0, sizeof *this);
+
+    const char *version = (const char *)glGetString(GL_VERSION);
+    if (version) {
+        if (version[0] == 'O' &&
+            version[1] == 'p' &&
+            version[2] == 'e' &&
+            version[3] == 'n' &&
+            version[4] == 'G' &&
+            version[5] == 'L' &&
+            version[6] == ' ' &&
+            version[7] == 'E' &&
+            version[8] == 'S' &&
+            (version[9] == ' ' || version[9] == '-')) {
+            ES = true;
+        }
+    }
+
+    ARB_draw_buffers = !ES;
+
+    // TODO: Check extensions we use below
+}
+
+void
+Context::resetPixelPackState(void) {
+    if (!ES) {
+        glPushClientAttrib(GL_CLIENT_PIXEL_STORE_BIT);
+        glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+        glPixelStorei(GL_PACK_SWAP_BYTES, GL_FALSE);
+        glPixelStorei(GL_PACK_LSB_FIRST, GL_FALSE);
+        glPixelStorei(GL_PACK_ROW_LENGTH, 0);
+        glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
+        glPixelStorei(GL_PACK_SKIP_ROWS, 0);
+        glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+        glPixelStorei(GL_PACK_SKIP_IMAGES, 0);
+    } else {
+        packAlignment = 4;
+        glGetIntegerv(GL_PACK_ALIGNMENT, &packAlignment);
+    }
+    glPixelStorei(GL_PACK_ALIGNMENT, 1);
+}
+
+void
+Context::restorePixelPackState(void) {
+    if (!ES) {
+        glPopClientAttrib();
+    } else {
+        glPixelStorei(GL_PACK_ALIGNMENT, packAlignment);
+    }
+}
+
+
+static const GLenum bindings[] = {
+    GL_DRAW_BUFFER,
+    GL_READ_BUFFER,
+    GL_PIXEL_PACK_BUFFER_BINDING,
+    GL_PIXEL_UNPACK_BUFFER_BINDING,
+    GL_TEXTURE_BINDING_1D,
+    GL_TEXTURE_BINDING_2D,
+    GL_TEXTURE_BINDING_3D,
+    GL_TEXTURE_BINDING_RECTANGLE,
+    GL_TEXTURE_BINDING_CUBE_MAP,
+    GL_DRAW_FRAMEBUFFER_BINDING,
+    GL_READ_FRAMEBUFFER_BINDING,
+    GL_RENDERBUFFER_BINDING,
+    GL_DRAW_BUFFER0,
+    GL_DRAW_BUFFER1,
+    GL_DRAW_BUFFER2,
+    GL_DRAW_BUFFER3,
+    GL_DRAW_BUFFER4,
+    GL_DRAW_BUFFER5,
+    GL_DRAW_BUFFER6,
+    GL_DRAW_BUFFER7,
+};
+
+
+#define NUM_BINDINGS sizeof(bindings)/sizeof(bindings[0])
+
+
+void dumpCurrentContext(std::ostream &os)
+{
+    JSONWriter json(os);
+
+#ifndef NDEBUG
+    GLint old_bindings[NUM_BINDINGS];
+    for (unsigned i = 0; i < NUM_BINDINGS; ++i) {
+        old_bindings[i] = 0;
+        glGetIntegerv(bindings[i], &old_bindings[i]);
+    }
+#endif
+
+    Context context;
+
+    dumpParameters(json, context);
+    dumpShadersUniforms(json, context);
+    dumpTextures(json, context);
+    dumpFramebuffer(json, context);
+
+#ifndef NDEBUG
+    for (unsigned i = 0; i < NUM_BINDINGS; ++i) {
+        GLint new_binding = 0;
+        glGetIntegerv(bindings[i], &new_binding);
+        if (new_binding != old_bindings[i]) {
+            std::cerr << "warning: " << enumToString(bindings[i]) << " was clobbered\n";
+        }
+    }
+#endif
+
+}
+
+
+} /* namespace glstate */