gamnit: fix color buffer clearing issues on some computers

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/gamnit/dynamic_resolution.nit b/lib/gamnit/dynamic_resolution.nit
index 40ea221..e7c2def 100644 (file)
--- a/lib/gamnit/dynamic_resolution.nit
+++ b/lib/gamnit/dynamic_resolution.nit
@@ -73,6 +73,7 @@ redef class App
                        # Draw directly to the screen framebuffer
                        glBindFramebuffer(gl_FRAMEBUFFER, dynamic_context.screen_framebuffer)
                        glViewport(0, 0, display.width, display.height)
+                       glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
 
                        var gl_error = glGetError
                        assert gl_error == gl_NO_ERROR else print_error gl_error
@@ -81,13 +82,14 @@ redef class App
 
                # Draw to our dynamic framebuffer
                glBindFramebuffer(gl_FRAMEBUFFER, dynamic_context.dynamic_framebuffer)
-               glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
 
                var ratio = dynamic_resolution_ratio
                ratio = ratio.clamp(min_dynamic_resolution_ratio, max_dynamic_resolution_ratio)
                glViewport(0, 0, (display.width.to_f*ratio).to_i,
                                                 (display.height.to_f*ratio).to_i)
 
+               glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
+
                var gl_error = glGetError
                assert gl_error == gl_NO_ERROR else print_error gl_error
        end

diff --git a/lib/gamnit/flat.nit b/lib/gamnit/flat.nit
index cbcc2e7..70d8c53 100644 (file)
--- a/lib/gamnit/flat.nit
+++ b/lib/gamnit/flat.nit
@@ -375,9 +375,6 @@ redef class App
 
        redef fun frame_core(display)
        do
-               # Prepare to draw, clear buffers
-               glClear(gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT)
-
                # Check errors
                var gl_error = glGetError
                assert gl_error == gl_NO_ERROR else print_error gl_error