49c8d42317
When painting, actors rely on semi global state tracked by the state to get various things needed for painting, such as the current draw framebuffer. Having state hidden in such ways can be very deceiving as it's hard to follow changes spread out, and adding more and more state that should be tracked during a paint gets annoying as they will not change in isolation but one by one in their own places. To do this better, introduce a paint context that is passed along in paint calls that contains the necessary state needed during painting. The paint context implements a framebuffer stack just as Cogl works, which is currently needed for offscreen rendering used by clutter. The same context is passed around for paint nodes, contents and effects as well. In this commit, the context is only introduced, but not used. It aims to replace the Cogl framebuffer stack, and will allow actors to know what view it is currently painted on. https://gitlab.gnome.org/GNOME/mutter/merge_requests/935
247 lines
6.8 KiB
C
247 lines
6.8 KiB
C
#include <clutter/clutter.h>
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#include "test-conform-common.h"
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static const ClutterColor stage_color = { 0x00, 0x00, 0x00, 0xff };
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#ifdef COGL_HAS_XLIB
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#include <clutter/x11/clutter-x11.h>
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#include <cogl/cogl-texture-pixmap-x11.h>
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#define PIXMAP_WIDTH 512
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#define PIXMAP_HEIGHT 256
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#define GRID_SQUARE_SIZE 16
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/* Coordinates of a square that we'll update */
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#define PIXMAP_CHANGE_X 1
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#define PIXMAP_CHANGE_Y 1
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typedef struct _TestState
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{
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ClutterActor *stage;
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CoglHandle tfp;
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Pixmap pixmap;
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unsigned int frame_count;
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Display *display;
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} TestState;
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static Pixmap
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create_pixmap (TestState *state)
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{
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Pixmap pixmap;
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XGCValues gc_values = { 0, };
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GC black_gc, white_gc;
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int screen = DefaultScreen (state->display);
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int x, y;
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pixmap = XCreatePixmap (state->display,
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DefaultRootWindow (state->display),
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PIXMAP_WIDTH, PIXMAP_HEIGHT,
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DefaultDepth (state->display, screen));
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gc_values.foreground = BlackPixel (state->display, screen);
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black_gc = XCreateGC (state->display, pixmap, GCForeground, &gc_values);
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gc_values.foreground = WhitePixel (state->display, screen);
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white_gc = XCreateGC (state->display, pixmap, GCForeground, &gc_values);
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/* Draw a grid of alternative black and white rectangles to the
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pixmap */
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for (y = 0; y < PIXMAP_HEIGHT / GRID_SQUARE_SIZE; y++)
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for (x = 0; x < PIXMAP_WIDTH / GRID_SQUARE_SIZE; x++)
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XFillRectangle (state->display, pixmap,
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((x ^ y) & 1) ? black_gc : white_gc,
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x * GRID_SQUARE_SIZE,
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y * GRID_SQUARE_SIZE,
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GRID_SQUARE_SIZE,
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GRID_SQUARE_SIZE);
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XFreeGC (state->display, black_gc);
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XFreeGC (state->display, white_gc);
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return pixmap;
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}
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static void
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update_pixmap (TestState *state)
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{
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XGCValues gc_values = { 0, };
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GC black_gc;
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int screen = DefaultScreen (state->display);
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gc_values.foreground = BlackPixel (state->display, screen);
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black_gc = XCreateGC (state->display, state->pixmap,
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GCForeground, &gc_values);
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/* Fill in one the rectangles with black */
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XFillRectangle (state->display, state->pixmap,
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black_gc,
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PIXMAP_CHANGE_X * GRID_SQUARE_SIZE,
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PIXMAP_CHANGE_Y * GRID_SQUARE_SIZE,
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GRID_SQUARE_SIZE, GRID_SQUARE_SIZE);
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XFreeGC (state->display, black_gc);
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}
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static gboolean
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check_paint (TestState *state, int x, int y, int scale)
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{
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uint8_t *data, *p, update_value = 0;
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p = data = g_malloc (PIXMAP_WIDTH * PIXMAP_HEIGHT * 4);
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cogl_read_pixels (x, y, PIXMAP_WIDTH / scale, PIXMAP_HEIGHT / scale,
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COGL_READ_PIXELS_COLOR_BUFFER,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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data);
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for (y = 0; y < PIXMAP_HEIGHT / scale; y++)
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for (x = 0; x < PIXMAP_WIDTH / scale; x++)
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{
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int grid_x = x * scale / GRID_SQUARE_SIZE;
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int grid_y = y * scale / GRID_SQUARE_SIZE;
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/* If this is the updatable square then we'll let it be either
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color but we'll return which one it was */
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if (grid_x == PIXMAP_CHANGE_X && grid_y == PIXMAP_CHANGE_Y)
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{
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if (x % (GRID_SQUARE_SIZE / scale) == 0 &&
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y % (GRID_SQUARE_SIZE / scale) == 0)
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update_value = *p;
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else
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g_assert_cmpint (p[0], ==, update_value);
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g_assert (p[1] == update_value);
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g_assert (p[2] == update_value);
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p += 4;
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}
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else
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{
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uint8_t value = ((grid_x ^ grid_y) & 1) ? 0x00 : 0xff;
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g_assert_cmpint (*(p++), ==, value);
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g_assert_cmpint (*(p++), ==, value);
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g_assert_cmpint (*(p++), ==, value);
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p++;
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}
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}
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g_free (data);
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return update_value == 0x00;
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}
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/* We skip these frames first */
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#define FRAME_COUNT_BASE 5
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/* First paint the tfp with no mipmaps */
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#define FRAME_COUNT_NORMAL 6
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/* Then use mipmaps */
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#define FRAME_COUNT_MIPMAP 7
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/* After this frame will start waiting for the pixmap to change */
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#define FRAME_COUNT_UPDATED 8
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static void
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on_paint (ClutterActor *actor,
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ClutterPaintContext *paint_context,
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TestState *state)
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{
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CoglHandle material;
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material = cogl_material_new ();
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cogl_material_set_layer (material, 0, state->tfp);
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if (state->frame_count == FRAME_COUNT_MIPMAP)
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{
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const CoglMaterialFilter min_filter =
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COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST;
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cogl_material_set_layer_filters (material, 0,
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min_filter,
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COGL_MATERIAL_FILTER_NEAREST);
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}
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else
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cogl_material_set_layer_filters (material, 0,
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COGL_MATERIAL_FILTER_NEAREST,
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COGL_MATERIAL_FILTER_NEAREST);
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cogl_set_source (material);
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cogl_rectangle (0, 0, PIXMAP_WIDTH, PIXMAP_HEIGHT);
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cogl_rectangle (0, PIXMAP_HEIGHT,
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PIXMAP_WIDTH / 4, PIXMAP_HEIGHT * 5 / 4);
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if (state->frame_count >= 5)
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{
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gboolean big_updated, small_updated;
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big_updated = check_paint (state, 0, 0, 1);
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small_updated = check_paint (state, 0, PIXMAP_HEIGHT, 4);
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g_assert (big_updated == small_updated);
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if (state->frame_count < FRAME_COUNT_UPDATED)
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g_assert (big_updated == FALSE);
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else if (state->frame_count == FRAME_COUNT_UPDATED)
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/* Change the pixmap and keep drawing until it updates */
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update_pixmap (state);
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else if (big_updated)
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/* If we successfully got the update then the test is over */
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clutter_main_quit ();
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}
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state->frame_count++;
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}
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static gboolean
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queue_redraw (void *stage)
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{
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clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
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return TRUE;
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}
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#endif /* COGL_HAS_XLIB */
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void
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test_texture_pixmap_x11 (TestUtilsGTestFixture *fixture,
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void *data)
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{
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#ifdef COGL_HAS_XLIB
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TestState state;
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unsigned int idle_handler;
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unsigned long paint_handler;
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state.frame_count = 0;
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state.stage = clutter_stage_get_default ();
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state.display = clutter_x11_get_default_display ();
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state.pixmap = create_pixmap (&state);
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state.tfp = cogl_texture_pixmap_x11_new (state.pixmap, TRUE);
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clutter_stage_set_color (CLUTTER_STAGE (state.stage), &stage_color);
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paint_handler = g_signal_connect_after (state.stage, "paint",
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G_CALLBACK (on_paint), &state);
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idle_handler = g_idle_add (queue_redraw, state.stage);
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clutter_actor_show_all (state.stage);
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clutter_main ();
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g_clear_signal_handler (&paint_handler, state.stage);
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g_clear_handle_id (&idle_handler, g_source_remove);
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XFreePixmap (state.display, state.pixmap);
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if (cogl_test_verbose ())
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g_print ("OK\n");
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#else /* COGL_HAS_XLIB */
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if (cogl_test_verbose ())
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g_print ("Skipping\n");
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#endif /* COGL_HAS_XLIB */
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}
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