1 /**************************************************************************
3 * Copyright 2011-2012 Jose Fonseca
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 **************************************************************************/
28 * Window system helpers for glretrace.
34 #include "retrace.hpp"
36 #include "glstate.hpp"
37 #include "glretrace.hpp"
43 Context *currentContext = NULL;
47 visuals[glws::PROFILE_MAX];
51 getVisual(glws::Profile profile) {
52 glws::Visual * & visual = visuals[profile];
54 visual = glws::createVisual(retrace::doubleBuffer, profile);
56 std::cerr << "error: failed to create OpenGL visual\n";
65 getDefaultProfile(void)
67 if (retrace::coreProfile) {
68 return glws::PROFILE_CORE;
70 return glws::PROFILE_COMPAT;
75 static glws::Drawable *
76 createDrawableHelper(glws::Profile profile, int width = 32, int height = 32, bool pbuffer = false) {
77 glws::Visual *visual = getVisual(profile);
78 glws::Drawable *draw = glws::createDrawable(visual, width, height, pbuffer);
80 std::cerr << "error: failed to create OpenGL drawable\n";
89 createDrawable(glws::Profile profile) {
90 return createDrawableHelper(profile);
95 createDrawable(void) {
96 return createDrawable(getDefaultProfile());
101 createPbuffer(int width, int height) {
102 return createDrawableHelper(getDefaultProfile(), width, height, true);
107 createContext(Context *shareContext, glws::Profile profile) {
108 glws::Visual *visual = getVisual(profile);
109 glws::Context *shareWsContext = shareContext ? shareContext->wsContext : NULL;
110 glws::Context *ctx = glws::createContext(visual, shareWsContext, profile, retrace::debug);
112 std::cerr << "error: failed to create OpenGL context\n";
117 return new Context(ctx);
122 createContext(Context *shareContext) {
123 return createContext(shareContext, getDefaultProfile());
128 makeCurrent(trace::Call &call, glws::Drawable *drawable, Context *context)
130 glws::Drawable *currentDrawable = currentContext ? currentContext->drawable : NULL;
132 if (drawable == currentDrawable && context == currentContext) {
136 if (currentContext) {
138 if (!retrace::doubleBuffer) {
139 frame_complete(call);
145 bool success = glws::makeCurrent(drawable, context ? context->wsContext : NULL);
148 std::cerr << "error: failed to make current OpenGL context and drawable\n";
153 if (currentContext) {
154 currentContext->drawable = NULL;
157 if (drawable && context) {
158 currentContext = context;
159 currentContext->drawable = drawable;
161 if (!context->used) {
163 context->used = true;
166 currentContext = NULL;
176 * Grow the current drawble.
178 * We need to infer the drawable size from GL calls because the drawable sizes
179 * are specified by OS specific calls which we do not trace.
182 updateDrawable(int width, int height) {
183 if (!currentContext) {
187 glws::Drawable *currentDrawable = currentContext->drawable;
188 assert(currentDrawable);
190 if (currentDrawable->pbuffer) {
194 if (currentDrawable->visible &&
195 width <= currentDrawable->width &&
196 height <= currentDrawable->height) {
200 // Ignore zero area viewports
201 if (width == 0 || height == 0) {
205 // Check for bound framebuffer last, as this may have a performance impact.
206 GLint draw_framebuffer = 0;
207 glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, &draw_framebuffer);
208 if (draw_framebuffer != 0) {
212 currentDrawable->resize(width, height);
213 currentDrawable->show();
215 glScissor(0, 0, width, height);
220 parseAttrib(const trace::Value *attribs, int param, int default_ = 0) {
221 const trace::Array *attribs_ = dynamic_cast<const trace::Array *>(attribs);
224 for (size_t i = 0; i + 1 < attribs_->values.size(); i += 2) {
225 int param_i = attribs_->values[i]->toSInt();
230 if (param_i == param) {
231 int value = attribs_->values[i + 1]->toSInt();
241 } /* namespace glretrace */