changeset
Fix pick scene rendering: we cannot use glReadPixels when using multisampling, so we need to render the pick scene to a separate frame buffer
Mon, 20 Jun 2022 21:14:17 +0300
- author
- Teemu Piippo <teemu.s.piippo@gmail.com>
- date
- Mon, 20 Jun 2022 21:14:17 +0300
- changeset 238
- b8ad4c12d937
- parent 237
- 10a6298f636f
- child 239
- 74ce5ac84f25
Fix pick scene rendering: we cannot use glReadPixels when using multisampling, so we need to render the pick scene to a separate frame buffer
| src/gl/partrenderer.cpp | file | annotate | diff | comparison | revisions |
--- a/src/gl/partrenderer.cpp Mon Jun 20 19:49:56 2022 +0300 +++ b/src/gl/partrenderer.cpp Mon Jun 20 21:14:17 2022 +0300 @@ -18,6 +18,7 @@ #include <glm/ext/matrix_transform.hpp> #include <glm/ext/matrix_clip_space.hpp> +#include <QOpenGLFramebufferObject> #include <QPainter> #include <GL/glu.h> #include <QMouseEvent> @@ -461,13 +462,15 @@ const gl::RenderStyle oldRenderStyle = this->renderPreferences.style; this->renderPreferences.style = gl::RenderStyle::PickScene; this->makeCurrent(); + QOpenGLFramebufferObject fbo{this->width(), this->height(), QOpenGLFramebufferObject::CombinedDepthStencil}; + fbo.bind(); this->renderScene(); std::array<GLubyte, 3> data; this->checkForGLErrors(); glfunc.glReadPixels(where.x(), where.y(), 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &data[0]); this->checkForGLErrors(); + fbo.release(); this->renderPreferences.style = oldRenderStyle; - this->update(); return gl::idFromColor(data); }
