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Fixed Framebuffers scaling their contents when not sized identically to the main window

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This commit is contained in:
Bill Meltsner
2010-11-18 02:40:07 -05:00
parent a47fa1462d
commit fade6f0cbc
1 changed files with 15 additions and 2 deletions
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src/modules/graphics/opengl/Framebuffer.cpp
+15 -2
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@@ -186,14 +186,25 @@ namespace opengl
// cleanup after previous fbo // cleanup after previous fbo
if (current != NULL) if (current != NULL)
glPopAttrib(); current->stopGrab();
// bind buffer and clear screen // bind buffer and clear screen
glPushAttrib(GL_VIEWPORT_BIT | GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushAttrib(GL_VIEWPORT_BIT | GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_TRANSFORM_BIT);
strategy->bindFBO(fbo); strategy->bindFBO(fbo);
glClearColor(.0f, .0f, .0f, .0f); glClearColor(.0f, .0f, .0f, .0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glViewport(0, 0, width, height); glViewport(0, 0, width, height);
// Reset the projection matrix
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
// Set up orthographic view (no depth)
glOrtho(0.0, width, height, 0.0, -1.0, 1.0);
// Switch back to modelview matrix
glMatrixMode(GL_MODELVIEW);
// indicate we are using this fbo // indicate we are using this fbo
current = this; current = this;
@@ -207,6 +218,8 @@ namespace opengl
// bind default // bind default
strategy->bindFBO( 0 ); strategy->bindFBO( 0 );
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glPopAttrib(); glPopAttrib();
current = NULL; current = NULL;
} }