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gdk: Fix scissoring with scaled windows

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Make sure the window scale is always taken into acount when setting up
the scissor regions.
This commit is contained in:
Alexander Larsson
2014-12-15 22:31:48 +01:00
parent 2693496b56
commit a1a01983f7
2 changed files with 13 additions and 13 deletions
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18
gdk/x11/gdkglcontext-x11.c
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@ -424,7 +424,7 @@ gdk_x11_gl_context_texture_from_surface (GdkGLContext *paint_context,
cairo_rectangle_int_t rect;
int n_rects, i;
GdkWindow *window;
int window_height;
int unscaled_window_height;
int window_scale;
unsigned int texture_id;
gboolean use_texture_rectangle;
@ -448,7 +448,7 @@ gdk_x11_gl_context_texture_from_surface (GdkGLContext *paint_context,
window = gdk_gl_context_get_window (paint_context)->impl_window;
window_scale = gdk_window_get_scale_factor (window);
window_height = gdk_window_get_height (window);
gdk_window_get_unscaled_size (window, NULL, &unscaled_window_height);
sx = sy = 1;
cairo_surface_get_device_scale (window->current_paint.surface, &sx, &sy);
@ -476,11 +476,11 @@ gdk_x11_gl_context_texture_from_surface (GdkGLContext *paint_context,
n_rects = cairo_region_num_rectangles (region);
quads = g_new (GdkTexturedQuad, n_rects);
#define FLIP_Y(_y) (window_height - (_y))
#define FLIP_Y(_y) (unscaled_window_height - (_y))
cairo_region_get_extents (region, &rect);
glScissor (rect.x * window_scale, FLIP_Y(rect.y) * window_scale,
(rect.x + rect.width) * window_scale, FLIP_Y (rect.y + rect.height) * window_scale);
glScissor (rect.x * window_scale, FLIP_Y((rect.y + rect.height) * window_scale),
rect.width * window_scale, rect.height * window_scale);
for (i = 0; i < n_rects; i++)
{
@ -506,8 +506,8 @@ gdk_x11_gl_context_texture_from_surface (GdkGLContext *paint_context,
{
GdkTexturedQuad quad = {
rect.x * window_scale, FLIP_Y(rect.y) * window_scale,
(rect.x + rect.width) * window_scale, FLIP_Y(rect.y + rect.height) * window_scale,
rect.x * window_scale, FLIP_Y(rect.y * window_scale),
(rect.x + rect.width) * window_scale, FLIP_Y((rect.y + rect.height) * window_scale),
uscale * src_x, vscale * src_y,
uscale * (src_x + src_width), vscale * (src_y + src_height),
};
@ -518,11 +518,11 @@ gdk_x11_gl_context_texture_from_surface (GdkGLContext *paint_context,
#undef FLIP_Y
glDisable (GL_SCISSOR_TEST);
gdk_gl_texture_quads (paint_context, target, n_rects, quads);
g_free (quads);
glDisable (GL_SCISSOR_TEST);
glXReleaseTexImageEXT (glx_pixmap->display, glx_pixmap->drawable,
GLX_FRONT_LEFT_EXT);