test: Exercise replaying a recording surface through a flip matrix

test/Makefile.sources

@@ -265,6 +265,7 @@ test_sources = \
 	record1414x.c					\
 	record2x.c					\
 	record90.c					\
+	recordflip.c					\
 	record-extend.c					\
 	record-mesh.c					\
 	recording-surface-pattern.c			\

test/recordflip.c

@@ -0,0 +1,493 @@
+/*
+ * Copyright © 2011,2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Author: Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+#define TEXT_SIZE 12
+#define SIZE 60 /* needs to be big to check large area effects (dithering) */
+#define PAD 2
+
+#define TT_SIZE 100
+#define TT_PAD 5
+#define TT_FONT_SIZE 32.0
+
+#define GENERATE_REF 0
+
+static uint32_t data[16] = {
+    0xffffffff, 0xffffffff,		0xffff0000, 0xffff0000,
+    0xffffffff, 0xffffffff,		0xffff0000, 0xffff0000,
+
+    0xff00ff00, 0xff00ff00,		0xff0000ff, 0xff0000ff,
+    0xff00ff00, 0xff00ff00,		0xff0000ff, 0xff0000ff
+};
+
+static const char *png_filename = "romedalen.png";
+
+static cairo_t *
+paint (cairo_t *cr)
+{
+    cairo_set_source_rgb (cr, 0, 0, 1);
+    cairo_paint (cr);
+
+    cairo_translate (cr, 2, 2);
+    cairo_scale (cr, 0.5, 0.5);
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_paint (cr);
+
+    return cr;
+}
+
+static cairo_t *
+paint_alpha (cairo_t *cr)
+{
+    cairo_surface_t *surface;
+
+    surface = cairo_image_surface_create_for_data ((unsigned char *) data,
+						   CAIRO_FORMAT_RGB24, 4, 4, 16);
+
+    cairo_test_paint_checkered (cr);
+
+    cairo_scale (cr, 4, 4);
+
+    cairo_set_source_surface (cr, surface, 2 , 2);
+    cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST);
+    cairo_paint_with_alpha (cr, 0.5);
+
+    cairo_surface_finish (surface); /* data will go out of scope */
+    cairo_surface_destroy (surface);
+
+    return cr;
+}
+
+static cairo_t *
+paint_alpha_solid_clip (cairo_t *cr)
+{
+    cairo_test_paint_checkered (cr);
+
+    cairo_rectangle (cr, 2.5, 2.5, 27, 27);
+    cairo_clip (cr);
+
+    cairo_set_source_rgb (cr, 1., 0.,0.);
+    cairo_paint_with_alpha (cr, 0.5);
+
+    return cr;
+}
+
+static cairo_t *
+paint_alpha_clip (cairo_t *cr)
+{
+    cairo_surface_t *surface;
+
+    surface = cairo_image_surface_create_for_data ((unsigned char *) data,
+						   CAIRO_FORMAT_RGB24, 4, 4, 16);
+
+    cairo_test_paint_checkered (cr);
+
+    cairo_rectangle (cr, 10.5, 10.5, 11, 11);
+    cairo_clip (cr);
+
+    cairo_scale (cr, 4, 4);
+
+    cairo_set_source_surface (cr, surface, 2 , 2);
+    cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST);
+    cairo_paint_with_alpha (cr, 0.5);
+
+    cairo_surface_finish (surface); /* data will go out of scope */
+    cairo_surface_destroy (surface);
+
+    return cr;
+}
+
+static cairo_t *
+paint_alpha_clip_mask (cairo_t *cr)
+{
+    cairo_surface_t *surface;
+
+    surface = cairo_image_surface_create_for_data ((unsigned char *) data,
+						   CAIRO_FORMAT_RGB24, 4, 4, 16);
+
+    cairo_test_paint_checkered (cr);
+
+    cairo_move_to (cr, 16, 5);
+    cairo_line_to (cr, 5, 16);
+    cairo_line_to (cr, 16, 27);
+    cairo_line_to (cr, 27, 16);
+    cairo_clip (cr);
+
+    cairo_scale (cr, 4, 4);
+
+    cairo_set_source_surface (cr, surface, 2 , 2);
+    cairo_pattern_set_filter (cairo_get_source (cr), CAIRO_FILTER_NEAREST);
+    cairo_paint_with_alpha (cr, 0.5);
+
+    cairo_surface_finish (surface); /* data will go out of scope */
+    cairo_surface_destroy (surface);
+
+    return cr;
+}
+
+static cairo_t *
+select_font_face (cairo_t *cr)
+{
+    /* We draw in the default black, so paint white first. */
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 0, 0, 0); /* black */
+
+    cairo_set_font_size (cr, TEXT_SIZE);
+    cairo_move_to (cr, 0, TEXT_SIZE);
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Serif",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_show_text (cr, "i-am-serif");
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_show_text (cr, " i-am-sans");
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans Mono",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_show_text (cr, " i-am-mono");
+
+    return cr;
+}
+
+static cairo_t *
+fill_alpha (cairo_t *cr)
+{
+    const double alpha = 1./3;
+    int n;
+
+    /* flatten to white */
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+    /* square */
+    cairo_rectangle (cr, PAD, PAD, SIZE, SIZE);
+    cairo_set_source_rgba (cr, 1, 0, 0, alpha);
+    cairo_fill (cr);
+
+    /* circle */
+    cairo_translate (cr, SIZE + 2 * PAD, 0);
+    cairo_arc (cr, PAD + SIZE / 2., PAD + SIZE / 2., SIZE / 2., 0, 2 * M_PI);
+    cairo_set_source_rgba (cr, 0, 1, 0, alpha);
+    cairo_fill (cr);
+
+    /* triangle */
+    cairo_translate (cr, 0, SIZE + 2 * PAD);
+    cairo_move_to (cr, PAD + SIZE / 2, PAD);
+    cairo_line_to (cr, PAD + SIZE, PAD + SIZE);
+    cairo_line_to (cr, PAD, PAD + SIZE);
+    cairo_set_source_rgba (cr, 0, 0, 1, alpha);
+    cairo_fill (cr);
+
+    /* star */
+    cairo_translate (cr, -(SIZE + 2 * PAD) + SIZE/2., SIZE/2.);
+    for (n = 0; n < 5; n++) {
+	cairo_line_to (cr,
+		       SIZE/2 * cos (2*n * 2*M_PI / 10),
+		       SIZE/2 * sin (2*n * 2*M_PI / 10));
+
+	cairo_line_to (cr,
+		       SIZE/4 * cos ((2*n+1)*2*M_PI / 10),
+		       SIZE/4 * sin ((2*n+1)*2*M_PI / 10));
+    }
+    cairo_set_source_rgba (cr, 0, 0, 0, alpha);
+    cairo_fill (cr);
+
+    return cr;
+}
+
+static cairo_t *
+self_intersecting (cairo_t *cr)
+{
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+    cairo_translate (cr, 1.0, 1.0);
+
+    cairo_set_source_rgb (cr, 1, 0, 0); /* red */
+
+    /* First draw the desired shape with a fill */
+    cairo_rectangle (cr, 0.5, 0.5,  4.0, 4.0);
+    cairo_rectangle (cr, 3.5, 3.5,  4.0, 4.0);
+    cairo_rectangle (cr, 3.5, 1.5, -2.0, 2.0);
+    cairo_rectangle (cr, 6.5, 4.5, -2.0, 2.0);
+
+    cairo_fill (cr);
+
+    /* Then try the same thing with a stroke */
+    cairo_translate (cr, 0, 10);
+    cairo_move_to (cr, 1.0, 1.0);
+    cairo_rel_line_to (cr,  3.0,  0.0);
+    cairo_rel_line_to (cr,  0.0,  6.0);
+    cairo_rel_line_to (cr,  3.0,  0.0);
+    cairo_rel_line_to (cr,  0.0, -3.0);
+    cairo_rel_line_to (cr, -6.0,  0.0);
+    cairo_close_path (cr);
+
+    cairo_set_line_width (cr, 1.0);
+    cairo_stroke (cr);
+
+    return cr;
+}
+
+static void
+draw_text_transform (cairo_t *cr)
+{
+    cairo_matrix_t tm;
+
+    /* skew */
+    cairo_matrix_init (&tm, 1, 0,
+                       -0.25, 1,
+                       0, 0);
+    cairo_matrix_scale (&tm, TT_FONT_SIZE, TT_FONT_SIZE);
+    cairo_set_font_matrix (cr, &tm);
+
+    cairo_new_path (cr);
+    cairo_move_to (cr, 50, TT_SIZE-TT_PAD);
+    cairo_show_text (cr, "A");
+
+    /* rotate and scale */
+    cairo_matrix_init_rotate (&tm, M_PI / 2);
+    cairo_matrix_scale (&tm, TT_FONT_SIZE, TT_FONT_SIZE * 2.0);
+    cairo_set_font_matrix (cr, &tm);
+
+    cairo_new_path (cr);
+    cairo_move_to (cr, TT_PAD, TT_PAD + 25);
+    cairo_show_text (cr, "A");
+
+    cairo_matrix_init_rotate (&tm, M_PI / 2);
+    cairo_matrix_scale (&tm, TT_FONT_SIZE * 2.0, TT_FONT_SIZE);
+    cairo_set_font_matrix (cr, &tm);
+
+    cairo_new_path (cr);
+    cairo_move_to (cr, TT_PAD, TT_PAD + 50);
+    cairo_show_text (cr, "A");
+}
+
+static cairo_t *
+text_transform (cairo_t *cr)
+{
+    const cairo_test_context_t *ctx = cairo_test_get_context (cr);
+    cairo_pattern_t *pattern;
+
+    cairo_set_source_rgb (cr, 1., 1., 1.);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 0., 0., 0.);
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+
+    draw_text_transform (cr);
+
+    cairo_translate (cr, TT_SIZE, TT_SIZE);
+    cairo_rotate (cr, M_PI);
+
+    pattern = cairo_test_create_pattern_from_png (ctx, png_filename);
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
+    cairo_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    draw_text_transform (cr);
+
+    return cr;
+}
+
+/* And here begins the recording and replaying... */
+
+static cairo_t *
+record_create (cairo_t *target)
+{
+    cairo_surface_t *surface;
+    cairo_t *cr;
+
+    surface = cairo_recording_surface_create (cairo_surface_get_content (cairo_get_target (target)), NULL);
+    cr = cairo_create (surface);
+    cairo_surface_destroy (surface);
+
+    return cr;
+}
+
+static cairo_surface_t *
+record_get (cairo_t *target)
+{
+    cairo_surface_t *surface;
+
+    surface = cairo_surface_reference (cairo_get_target (target));
+    cairo_destroy (target);
+
+    return surface;
+}
+
+static cairo_test_status_t
+record_replay (cairo_t *cr, cairo_t *(*func)(cairo_t *), int width, int height)
+{
+    cairo_surface_t *surface;
+    int x, y;
+
+#if GENERATE_REF
+    cairo_scale (cr, -1, -1);
+    cairo_translate (cr, -width, -height);
+    func(cr);
+#else
+    surface = record_get (func (record_create (cr)));
+
+    cairo_scale (cr, -1, -1);
+    cairo_translate (cr, -width, -height);
+    cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+    cairo_set_source_surface (cr, surface, 0, 0);
+    cairo_surface_destroy (surface);
+    cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_NONE);
+
+    for (y = 0; y < height; y += 2) {
+	for (x = 0; x < width; x += 2) {
+	    cairo_rectangle (cr, x, y, 2, 2);
+	    cairo_clip (cr);
+	    cairo_paint (cr);
+	    cairo_reset_clip (cr);
+	}
+    }
+#endif
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+record_paint (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, paint, width, height);
+}
+
+static cairo_test_status_t
+record_paint_alpha (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, paint_alpha, width, height);
+}
+
+static cairo_test_status_t
+record_paint_alpha_solid_clip (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, paint_alpha_solid_clip, width, height);
+}
+
+static cairo_test_status_t
+record_paint_alpha_clip (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, paint_alpha_clip, width, height);
+}
+
+static cairo_test_status_t
+record_paint_alpha_clip_mask (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, paint_alpha_clip_mask, width, height);
+}
+
+static cairo_test_status_t
+record_fill_alpha (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, fill_alpha, width, height);
+}
+
+static cairo_test_status_t
+record_self_intersecting (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, self_intersecting, width, height);
+}
+
+static cairo_test_status_t
+record_select_font_face (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, select_font_face, width, height);
+}
+
+static cairo_test_status_t
+record_text_transform (cairo_t *cr, int width, int height)
+{
+    return record_replay (cr, text_transform, width, height);
+}
+
+CAIRO_TEST (recordflip_paint,
+	    "Test replayed calls to cairo_paint",
+	    "paint,record", /* keywords */
+	    NULL, /* requirements */
+	    8, 8,
+	    NULL, record_paint)
+CAIRO_TEST (recordflip_paint_alpha,
+	    "Simple test of cairo_paint_with_alpha",
+	    "record, paint, alpha", /* keywords */
+	    NULL, /* requirements */
+	    32, 32,
+	    NULL, record_paint_alpha)
+CAIRO_TEST (recordflip_paint_alpha_solid_clip,
+	    "Simple test of cairo_paint_with_alpha+unaligned clip",
+	    "record, paint, alpha, clip", /* keywords */
+	    NULL, /* requirements */
+	    32, 32,
+	    NULL, record_paint_alpha_solid_clip)
+CAIRO_TEST (recordflip_paint_alpha_clip,
+	    "Simple test of cairo_paint_with_alpha+unaligned clip",
+	    "record, paint, alpha, clip", /* keywords */
+	    NULL, /* requirements */
+	    32, 32,
+	    NULL, record_paint_alpha_clip)
+CAIRO_TEST (recordflip_paint_alpha_clip_mask,
+	    "Simple test of cairo_paint_with_alpha+triangular clip",
+	    "record, paint, alpha, clip", /* keywords */
+	    NULL, /* requirements */
+	    32, 32,
+	    NULL, record_paint_alpha_clip_mask)
+CAIRO_TEST (recordflip_fill_alpha,
+	    "Tests using set_rgba();fill()",
+	    "record,fill, alpha", /* keywords */
+	    NULL, /* requirements */
+	    (2*SIZE + 4*PAD), (2*SIZE + 4*PAD),
+	    NULL, record_fill_alpha)
+CAIRO_TEST (recordflip_select_font_face,
+	    "Tests using cairo_select_font_face to draw text in different faces",
+	    "record, font", /* keywords */
+	    NULL, /* requirements */
+	    192, (TEXT_SIZE + 4),
+	    NULL, record_select_font_face)
+CAIRO_TEST (recordflip_self_intersecting,
+	    "Test strokes of self-intersecting paths",
+	    "record, stroke, trap", /* keywords */
+	    NULL, /* requirements */
+	    10, 20,
+	    NULL, record_self_intersecting)
+CAIRO_TEST (recordflip_text_transform,
+	    "Test various applications of the font matrix",
+	    "record, text, transform", /* keywords */
+	    NULL, /* requirements */
+	    TT_SIZE, TT_SIZE,
+	    NULL, record_text_transform)