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