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clutter/paint-node: Add multi-rect operations
Add a new pair of APIs corresponding to CoglFramebuffer's draw_rectangles() and draw_textured_rectangles(). They're generally more performance compared to adding multiple single-rect operations. These variants are heavily used by GNOME Shell's CSS implementation. The op array is built to match cogl_framebuffer_draw_textured_rectangles() always, which means it's a series of 8 floats composed (x1 y1 x2 y2) and (s1 t1 s2 t2). To avoid adding new struct fields to ClutterPaintOperation, which is a performance and memory sensitive structure, simply divide the array length by 8 (which is guaranteed to be correct). Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1637>
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@ -82,6 +82,7 @@ typedef enum
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{
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PAINT_OP_INVALID = 0,
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PAINT_OP_TEX_RECT,
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PAINT_OP_TEX_RECTS,
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PAINT_OP_MULTITEX_RECT,
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PAINT_OP_PRIMITIVE
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} PaintOpCode;
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@ -777,6 +777,7 @@ 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_TEX_RECTS:
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case PAINT_OP_MULTITEX_RECT:
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g_clear_pointer (&op->coords, g_array_unref);
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break;
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@ -809,6 +810,36 @@ 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_tex_rects (ClutterPaintOperation *op,
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const float *coords,
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unsigned int n_rects,
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gboolean use_default_tex_coords)
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{
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const unsigned int n_floats = n_rects * 8;
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clutter_paint_operation_clear (op);
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op->opcode = PAINT_OP_TEX_RECTS;
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op->coords = g_array_sized_new (FALSE, FALSE, sizeof (float), n_floats);
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if (use_default_tex_coords)
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{
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const float default_tex_coords[4] = { 0.0, 0.0, 1.0, 1.0 };
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int i;
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for (i = 0; i < n_rects; i++)
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{
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g_array_append_vals (op->coords, &coords[i * 4], 4);
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g_array_append_vals (op->coords, default_tex_coords, 4);
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}
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}
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else
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{
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g_array_append_vals (op->coords, coords, n_floats);
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}
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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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@ -934,6 +965,74 @@ clutter_paint_node_add_multitexture_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_rectangles:
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* @node: a #ClutterPaintNode
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* @coords: (in) (array length=n_rects) (transfer none): array of
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* coordinates containing groups of 4 float values: [x_1, y_1, x_2, y_2] that
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* are interpreted as two position coordinates; one for the top left of the
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* rectangle (x1, y1), and one for the bottom right of the rectangle
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* (x2, y2).
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* @n_rects: number of rectangles defined in @coords.
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*
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* Adds a series of rectangles to @node.
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*
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* As a general rule for better performance its recommended to use this API
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* instead of calling clutter_paint_node_add_rectangle() separately for
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* multiple rectangles if all of the rectangles will be drawn together.
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*
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* See cogl_framebuffer_draw_rectangles().
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*/
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void
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clutter_paint_node_add_rectangles (ClutterPaintNode *node,
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const float *coords,
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unsigned int n_rects)
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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 (coords != NULL);
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clutter_paint_node_maybe_init_operations (node);
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clutter_paint_op_init_tex_rects (&operation, coords, n_rects, TRUE);
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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_texture_rectangles:
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* @node: a #ClutterPaintNode
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* @coords: (in) (array length=n_rects) (transfer none): array containing
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* groups of 8 float values: [x_1, y_1, x_2, y_2, s_1, t_1, s_2, t_2]
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* that have the same meaning as the arguments for
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* cogl_framebuffer_draw_textured_rectangle().
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* @n_rects: number of rectangles defined in @coords.
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*
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* Adds a series of rectangles to @node.
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*
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* The given texture coordinates should always be normalized such that
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* (0, 0) corresponds to the top left and (1, 1) corresponds to the
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* bottom right. To map an entire texture across the rectangle pass
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* in s_1=0, t_1=0, s_2=1, t_2=1.
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*
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* See cogl_framebuffer_draw_textured_rectangles().
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*/
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void
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clutter_paint_node_add_texture_rectangles (ClutterPaintNode *node,
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const float *coords,
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unsigned int n_rects)
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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 (coords != NULL);
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clutter_paint_node_maybe_init_operations (node);
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clutter_paint_op_init_tex_rects (&operation, coords, n_rects, FALSE);
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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_primitive: (skip)
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* @node: a #ClutterPaintNode
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@ -1057,6 +1156,19 @@ 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_TEX_RECTS:
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json_builder_set_member_name (builder, "texrects");
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json_builder_begin_array (builder);
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for (j = 0; i < op->coords->len; j++)
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{
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float coord = g_array_index (op->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_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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@ -83,6 +83,15 @@ void clutter_paint_node_add_multitexture_rectangle (ClutterP
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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_rectangles (ClutterPaintNode *node,
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const float *coords,
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unsigned int n_rects);
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CLUTTER_EXPORT
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void clutter_paint_node_add_texture_rectangles (ClutterPaintNode *node,
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const float *coords,
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unsigned int n_rects);
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CLUTTER_EXPORT
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void clutter_paint_node_add_primitive (ClutterPaintNode *node,
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CoglPrimitive *primitive);
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@ -467,6 +467,13 @@ 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_TEX_RECTS:
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cogl_framebuffer_draw_textured_rectangles (fb,
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pnode->pipeline,
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(float *) op->coords->data,
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op->coords->len / 8);
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break;
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case PAINT_OP_MULTITEX_RECT:
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cogl_framebuffer_draw_multitextured_rectangle (fb,
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pnode->pipeline,
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@ -872,6 +879,7 @@ 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_TEX_RECTS:
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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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@ -1033,6 +1041,7 @@ 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_TEX_RECTS:
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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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@ -1067,6 +1076,7 @@ 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_TEX_RECTS:
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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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@ -1440,6 +1450,13 @@ clutter_layer_node_post_draw (ClutterPaintNode *node,
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op->op.texrect[7]);
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break;
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case PAINT_OP_TEX_RECTS:
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cogl_framebuffer_draw_textured_rectangles (fb,
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lnode->pipeline,
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(float *) op->coords->data,
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op->coords->len / 8);
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break;
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case PAINT_OP_MULTITEX_RECT:
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cogl_framebuffer_draw_multitextured_rectangle (fb,
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lnode->pipeline,
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@ -1695,6 +1712,7 @@ clutter_blit_node_draw (ClutterPaintNode *node,
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}
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break;
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case PAINT_OP_TEX_RECTS:
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case PAINT_OP_MULTITEX_RECT:
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case PAINT_OP_PRIMITIVE:
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break;
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