static CoglTransformResult
_cogl_texture_pixmap_x11_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglTexturePixmapX11 *tex_pixmap = COGL_TEXTURE_PIXMAP_X11 (tex);
CoglTexture *child_tex = _cogl_texture_pixmap_x11_get_texture (tex_pixmap);
/* Forward on to the child texture */
return _cogl_texture_transform_quad_coords_to_gl (child_tex, coords);
}
static CoglTransformResult
_cogl_sub_texture_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
CoglSubTexture *sub_tex = COGL_SUB_TEXTURE (tex);
int i;
/* We can't support repeating with this method. In this case
cogl-primitives will resort to manual repeating */
for (i = 0; i < 4; i++)
if (coords[i] < 0.0f || coords[i] > 1.0f)
return COGL_TRANSFORM_SOFTWARE_REPEAT;
_cogl_sub_texture_map_quad (sub_tex, coords);
return _cogl_texture_transform_quad_coords_to_gl (sub_tex->full_texture,
coords);
}
/*
* Validate the texture coordinates for this rectangle.
*/
static CoglBool
validate_tex_coords_cb (CoglPipeline *pipeline,
int layer_index,
void *user_data)
{
ValidateTexCoordsState *state = user_data;
CoglTexture *texture;
const float *in_tex_coords;
float *out_tex_coords;
float default_tex_coords[4] = {0.0, 0.0, 1.0, 1.0};
CoglTransformResult transform_result;
state->i++;
/* FIXME: we should be able to avoid this copying when no
* transform is required by the texture backend and the user
* has supplied enough coordinates for all the layers.
*/
/* If the user didn't supply texture coordinates for this layer
then use the default coords */
if (state->i >= state->user_tex_coords_len / 4)
in_tex_coords = default_tex_coords;
else
in_tex_coords = &state->user_tex_coords[state->i * 4];
out_tex_coords = &state->final_tex_coords[state->i * 4];
memcpy (out_tex_coords, in_tex_coords, sizeof (float) * 4);
texture = cogl_pipeline_get_layer_texture (pipeline, layer_index);
/* NB: NULL textures are handled by _cogl_pipeline_flush_gl_state */
if (!texture)
return TRUE;
/* Convert the texture coordinates to GL.
*/
transform_result =
_cogl_texture_transform_quad_coords_to_gl (texture,
out_tex_coords);
/* If the texture has waste or we are using GL_TEXTURE_RECT we
* can't handle texture repeating so we can't use the layer if
* repeating is required.
*
* NB: We already know that no texture matrix is being used if the
* texture doesn't support hardware repeat.
*/
if (transform_result == COGL_TRANSFORM_SOFTWARE_REPEAT)
{
if (state->i == 0)
{
if (state->n_layers > 1)
{
static CoglBool warning_seen = FALSE;
if (!warning_seen)
g_warning ("Skipping layers 1..n of your material since "
"the first layer doesn't support hardware "
"repeat (e.g. because of waste or use of "
"GL_TEXTURE_RECTANGLE_ARB) and you supplied "
"texture coordinates outside the range [0,1]."
"Falling back to software repeat assuming "
"layer 0 is the most important one keep");
warning_seen = TRUE;
}
if (state->override_pipeline)
cogl_object_unref (state->override_pipeline);
state->needs_multiple_primitives = TRUE;
return FALSE;
}
else
{
static CoglBool warning_seen = FALSE;
if (!warning_seen)
g_warning ("Skipping layer %d of your material "
"since you have supplied texture coords "
"outside the range [0,1] but the texture "
"doesn't support hardware repeat (e.g. "
"because of waste or use of "
"GL_TEXTURE_RECTANGLE_ARB). This isn't "
"supported with multi-texturing.", state->i);
warning_seen = TRUE;
cogl_pipeline_set_layer_texture (pipeline, layer_index, NULL);
}
}
/* By default WRAP_MODE_AUTOMATIC becomes to CLAMP_TO_EDGE. If
the texture coordinates need repeating then we'll override
this to GL_REPEAT. Otherwise we'll leave it at CLAMP_TO_EDGE
so that it won't blend in pixels from the opposite side when
the full texture is drawn with GL_LINEAR filter mode */
if (transform_result == COGL_TRANSFORM_HARDWARE_REPEAT)
{
if (cogl_pipeline_get_layer_wrap_mode_s (pipeline, layer_index) ==
COGL_PIPELINE_WRAP_MODE_AUTOMATIC)
{
if (!state->override_pipeline)
state->override_pipeline = cogl_pipeline_copy (pipeline);
cogl_pipeline_set_layer_wrap_mode_s (state->override_pipeline,
layer_index,
COGL_PIPELINE_WRAP_MODE_REPEAT);
}
if (cogl_pipeline_get_layer_wrap_mode_t (pipeline, layer_index) ==
COGL_PIPELINE_WRAP_MODE_AUTOMATIC)
{
if (!state->override_pipeline)
state->override_pipeline = cogl_pipeline_copy (pipeline);
cogl_pipeline_set_layer_wrap_mode_t (state->override_pipeline,
layer_index,
COGL_PIPELINE_WRAP_MODE_REPEAT);
}
}
return TRUE;
}
