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cogl-vertex-buffer: Default to GL_CLAMP_TO_EDGE for point sprites

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For point sprites you are usually drawing the whole texture so you
most often want GL_CLAMP_TO_EDGE. This patch removes the override for
COGL_MATERIAL_WRAP_MODE_AUTOMATIC when point sprites are enabled for a
layer so that it will clamp to edge.
This commit is contained in:
Neil Roberts
2010-04-07 11:06:20 +01:00
committed by Robert Bragg
parent da3be3df6b
commit 0e49e4f204
2 changed files with 35 additions and 28 deletions
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57
cogl/cogl-vertex-buffer.c
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@ -1659,6 +1659,37 @@ enable_state_for_drawing_buffer (CoglVertexBuffer *buffer)
if (tex_handle == COGL_INVALID_HANDLE)
continue;
if (!cogl_material_get_layer_point_sprite_coords_enabled (source, i))
{
/* By default COGL_MATERIAL_WRAP_MODE_AUTOMATIC becomes
GL_CLAMP_TO_EDGE but we want GL_REPEAT to maintain
compatibility with older versions of Cogl so we'll
override it. We don't want to do this for point sprites
because in that case the whole texture is drawn so you
would usually want clamp-to-edge. */
if (cogl_material_layer_get_wrap_mode_s (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].s =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
if (cogl_material_layer_get_wrap_mode_t (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].t =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
if (_cogl_material_layer_get_wrap_mode_r (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].r =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
}
/* Give the texture a chance to know that we're rendering
non-quad shaped primitives. If the texture is in an atlas it
will be migrated */
@ -1691,32 +1722,6 @@ enable_state_for_drawing_buffer (CoglVertexBuffer *buffer)
*/
fallback_layers |= (1 << i);
}
/* By default COGL_MATERIAL_WRAP_MODE_AUTOMATIC becomes
GL_CLAMP_TO_EDGE but we want GL_REPEAT to maintain
compatibility with older versions of Cogl so we'll override
it */
if (cogl_material_layer_get_wrap_mode_s (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].s =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
if (cogl_material_layer_get_wrap_mode_t (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].t =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
if (_cogl_material_layer_get_wrap_mode_r (layer) ==
COGL_MATERIAL_WRAP_MODE_AUTOMATIC)
{
options.wrap_mode_overrides.values[i].r =
COGL_MATERIAL_WRAP_MODE_OVERRIDE_REPEAT;
options.flags |= COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES;
}
}
/* Disable any tex coord arrays that we didn't use */