clutter/paint-node: Add multitexture API

The multitexture API is not a shortcut for multiple calls
to the single texture API. It is meant to wrap calls to
cogl_framebuffer_draw_multitexture_rectangle(), which
uses the passed texture coordinates at different layers of
the pipeline.

GNOME/mutter!405
parent 25f36b38
......@@ -77,6 +77,7 @@ struct _ClutterPaintNodeClass
typedef enum {
PAINT_OP_INVALID = 0,
PAINT_OP_TEX_RECT,
PAINT_OP_MULTITEX_RECT,
PAINT_OP_PATH,
PAINT_OP_PRIMITIVE
} PaintOpCode;
......@@ -85,6 +86,8 @@ struct _ClutterPaintOperation
{
PaintOpCode opcode;
GArray *multitex_coords;
union {
float texrect[8];
......
......@@ -761,6 +761,11 @@ clutter_paint_operation_clear (ClutterPaintOperation *op)
case PAINT_OP_TEX_RECT:
break;
case PAINT_OP_MULTITEX_RECT:
if (op->multitex_coords != NULL)
g_array_unref (op->multitex_coords);
break;
case PAINT_OP_PATH:
if (op->op.path != NULL)
cogl_object_unref (op->op.path);
......@@ -794,6 +799,27 @@ clutter_paint_op_init_tex_rect (ClutterPaintOperation *op,
op->op.texrect[7] = y_2;
}
static inline void
clutter_paint_op_init_multitex_rect (ClutterPaintOperation *op,
const ClutterActorBox *rect,
const float *tex_coords,
unsigned int tex_coords_len)
{
clutter_paint_operation_clear (op);
op->opcode = PAINT_OP_MULTITEX_RECT;
op->multitex_coords = g_array_sized_new (FALSE, FALSE,
sizeof (float),
tex_coords_len);
g_array_append_vals (op->multitex_coords, tex_coords, tex_coords_len);
op->op.texrect[0] = rect->x1;
op->op.texrect[1] = rect->y1;
op->op.texrect[2] = rect->x2;
op->op.texrect[3] = rect->y2;
}
static inline void
clutter_paint_op_init_path (ClutterPaintOperation *op,
CoglPath *path)
......@@ -881,6 +907,33 @@ clutter_paint_node_add_texture_rectangle (ClutterPaintNode *node,
g_array_append_val (node->operations, operation);
}
/**
* clutter_paint_node_add_multitexture_rectangle:
* @node: a #ClutterPaintNode
* @rect: a #ClutterActorBox
* @text_coords: array of multitexture values
* @text_coords_len: number of items of @text_coords
*
* Adds a rectangle region to the @node, with multitexture coordinates.
*/
void
clutter_paint_node_add_multitexture_rectangle (ClutterPaintNode *node,
const ClutterActorBox *rect,
const float *text_coords,
unsigned int text_coords_len)
{
ClutterPaintOperation operation = PAINT_OP_INIT;
g_return_if_fail (CLUTTER_IS_PAINT_NODE (node));
g_return_if_fail (rect != NULL);
clutter_paint_node_maybe_init_operations (node);
clutter_paint_op_init_multitex_rect (&operation, rect, text_coords, text_coords_len);
g_array_append_val (node->operations, operation);
}
/**
* clutter_paint_node_add_path: (skip)
* @node: a #ClutterPaintNode
......@@ -1006,7 +1059,7 @@ clutter_paint_node_to_json (ClutterPaintNode *node)
if (node->operations != NULL)
{
guint i;
guint i, j;
for (i = 0; i < node->operations->len; i++)
{
......@@ -1031,6 +1084,19 @@ clutter_paint_node_to_json (ClutterPaintNode *node)
json_builder_end_array (builder);
break;
case PAINT_OP_MULTITEX_RECT:
json_builder_set_member_name (builder, "texrect");
json_builder_begin_array (builder);
for (j = 0; i < op->multitex_coords->len; j++)
{
float coord = g_array_index (op->multitex_coords, float, j);
json_builder_add_double_value (builder, coord);
}
json_builder_end_array (builder);
break;
case PAINT_OP_PATH:
json_builder_set_member_name (builder, "path");
json_builder_add_int_value (builder, (gint64) op->op.path);
......
......@@ -67,6 +67,12 @@ void clutter_paint_node_add_texture_rectangle (Clutter
float x_2,
float y_2);
CLUTTER_EXPORT
void clutter_paint_node_add_multitexture_rectangle (ClutterPaintNode *node,
const ClutterActorBox *rect,
const float *text_coords,
unsigned int text_coords_len);
CLUTTER_EXPORT
void clutter_paint_node_add_path (ClutterPaintNode *node,
CoglPath *path);
......
......@@ -431,6 +431,17 @@ clutter_pipeline_node_draw (ClutterPaintNode *node)
op->op.texrect[7]);
break;
case PAINT_OP_MULTITEX_RECT:
cogl_framebuffer_draw_multitextured_rectangle (cogl_get_draw_framebuffer (),
pnode->pipeline,
op->op.texrect[0],
op->op.texrect[1],
op->op.texrect[2],
op->op.texrect[3],
(float*) op->multitex_coords->data,
op->multitex_coords->len);
break;
case PAINT_OP_PATH:
cogl_path_fill (op->op.path);
break;
......@@ -827,6 +838,7 @@ clutter_text_node_draw (ClutterPaintNode *node)
cogl_framebuffer_pop_clip (fb);
break;
case PAINT_OP_MULTITEX_RECT:
case PAINT_OP_PATH:
case PAINT_OP_PRIMITIVE:
case PAINT_OP_INVALID:
......@@ -992,6 +1004,7 @@ clutter_clip_node_pre_draw (ClutterPaintNode *node)
retval = TRUE;
break;
case PAINT_OP_MULTITEX_RECT:
case PAINT_OP_PRIMITIVE:
case PAINT_OP_INVALID:
break;
......@@ -1025,6 +1038,7 @@ clutter_clip_node_post_draw (ClutterPaintNode *node)
cogl_framebuffer_pop_clip (fb);
break;
case PAINT_OP_MULTITEX_RECT:
case PAINT_OP_PRIMITIVE:
case PAINT_OP_INVALID:
break;
......@@ -1180,6 +1194,17 @@ clutter_layer_node_post_draw (ClutterPaintNode *node)
cogl_pop_source ();
break;
case PAINT_OP_MULTITEX_RECT:
cogl_framebuffer_draw_multitextured_rectangle (cogl_get_draw_framebuffer (),
lnode->state,
op->op.texrect[0],
op->op.texrect[1],
op->op.texrect[2],
op->op.texrect[3],
(float*) op->multitex_coords->data,
op->multitex_coords->len);
break;
case PAINT_OP_PATH:
cogl_push_source (lnode->state);
cogl_path_fill (op->op.path);
......
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