24ca92951f
To allow for flushing of batched geometry within Cogl we can't support users directly calling glReadPixels. glReadPixels is also awkward, not least because it returns upside down image data. All the unit tests have been swithed over and clutter_stage_read_pixels now sits on top of this too.
390 lines
14 KiB
C
390 lines
14 KiB
C
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#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#include <string.h>
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#include "test-conform-common.h"
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static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
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#define QUAD_WIDTH 20
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#define RED 0
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#define GREEN 1
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#define BLUE 2
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#define ALPHA 3
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#define MASK_RED(COLOR) ((COLOR & 0xff000000) >> 24);
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#define MASK_GREEN(COLOR) ((COLOR & 0xff0000) >> 16);
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#define MASK_BLUE(COLOR) ((COLOR & 0xff00) >> 8);
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#define MASK_ALPHA(COLOR) (COLOR & 0xff);
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#define SKIP_FRAMES 2
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typedef struct _TestState
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{
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guint frame;
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ClutterGeometry stage_geom;
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CoglHandle passthrough_material;
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} TestState;
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static void
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check_pixel (GLubyte *pixel, guint32 color)
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{
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guint8 r = MASK_RED (color);
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guint8 g = MASK_GREEN (color);
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guint8 b = MASK_BLUE (color);
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guint8 a = MASK_ALPHA (color);
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if (g_test_verbose ())
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g_print (" expected = %x, %x, %x, %x\n",
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r, g, b, a);
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/* FIXME - allow for hardware in-precision */
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g_assert (pixel[RED] == r);
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g_assert (pixel[GREEN] == g);
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g_assert (pixel[BLUE] == b);
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/* FIXME
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* We ignore the alpha, since we don't know if our render target is
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* RGB or RGBA */
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/* g_assert (pixel[ALPHA] == a); */
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}
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static guchar *
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gen_tex_data (guint32 color)
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{
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guchar *tex_data, *p;
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guint8 r = MASK_RED (color);
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guint8 g = MASK_GREEN (color);
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guint8 b = MASK_BLUE (color);
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guint8 a = MASK_ALPHA (color);
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tex_data = g_malloc (QUAD_WIDTH * QUAD_WIDTH * 4);
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for (p = tex_data + QUAD_WIDTH * QUAD_WIDTH * 4; p > tex_data;)
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{
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*(--p) = a;
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*(--p) = b;
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*(--p) = g;
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*(--p) = r;
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}
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return tex_data;
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}
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static CoglHandle
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make_texture (guint32 color,
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CoglPixelFormat src_format,
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CoglPixelFormat internal_format)
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{
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CoglHandle tex;
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guchar *tex_data = gen_tex_data (color);
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tex = cogl_texture_new_from_data (QUAD_WIDTH,
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QUAD_WIDTH,
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COGL_TEXTURE_NONE,
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src_format,
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internal_format,
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QUAD_WIDTH * 4,
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tex_data);
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g_free (tex_data);
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return tex;
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}
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static void
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check_texture (TestState *state,
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int x,
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int y,
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CoglHandle tex,
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guint32 expected_result)
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{
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guchar pixel[4];
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int y_off;
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int x_off;
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cogl_material_set_layer (state->passthrough_material, 0, tex);
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cogl_set_source (state->passthrough_material);
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cogl_rectangle (x * QUAD_WIDTH,
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y * QUAD_WIDTH,
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x * QUAD_WIDTH + QUAD_WIDTH,
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y * QUAD_WIDTH + QUAD_WIDTH);
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/* See what we got... */
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y_off = y * QUAD_WIDTH + (QUAD_WIDTH / 2);
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x_off = x * QUAD_WIDTH + (QUAD_WIDTH / 2);
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/* XXX:
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* We haven't always had good luck with GL drivers implementing glReadPixels
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* reliably and skipping the first two frames improves our chances... */
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if (state->frame <= SKIP_FRAMES)
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return;
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cogl_read_pixels (x_off, y_off, 1, 1,
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COGL_READ_PIXELS_COLOR_BUFFER,
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COGL_PIXEL_FORMAT_RGBA_8888,
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pixel);
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if (g_test_verbose ())
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{
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g_print ("check texture (%d, %d):\n", x, y);
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g_print (" result = %02x, %02x, %02x, %02x\n",
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pixel[RED], pixel[GREEN], pixel[BLUE], pixel[ALPHA]);
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}
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check_pixel (pixel, expected_result);
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}
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static void
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on_paint (ClutterActor *actor, TestState *state)
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{
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int frame_num;
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CoglHandle tex;
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guchar *tex_data;
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/* If the user explicitly specifies an unmultiplied internal format then
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* Cogl shouldn't automatically premultiply the given texture data... */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xff00ff80, "
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"src = RGBA_8888, internal = RGBA_8888)\n");
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tex = make_texture (0xff00ff80,
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COGL_PIXEL_FORMAT_RGBA_8888, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888); /* internal format */
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check_texture (state, 0, 0, /* position */
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tex,
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0xff00ff80); /* expected */
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/* If the user explicitly requests a premultiplied internal format and
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* gives unmultiplied src data then Cogl should always premultiply that
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* for us */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xff00ff80, "
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"src = RGBA_8888, internal = RGBA_8888_PRE)\n");
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tex = make_texture (0xff00ff80,
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COGL_PIXEL_FORMAT_RGBA_8888, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE); /* internal format */
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check_texture (state, 1, 0, /* position */
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tex,
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0x80008080); /* expected */
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/* If the user gives COGL_PIXEL_FORMAT_ANY for the internal format then
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* by default Cogl should premultiply the given texture data...
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* (In the future there will be additional Cogl API to control this
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* behaviour) */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xff00ff80, "
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"src = RGBA_8888, internal = ANY)\n");
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tex = make_texture (0xff00ff80,
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COGL_PIXEL_FORMAT_RGBA_8888, /* src format */
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COGL_PIXEL_FORMAT_ANY); /* internal format */
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check_texture (state, 2, 0, /* position */
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tex,
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0x80008080); /* expected */
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/* If the user requests a premultiplied internal texture format and supplies
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* premultiplied source data, Cogl should never modify that source data...
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*/
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0x80008080, "
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"src = RGBA_8888_PRE, "
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"internal = RGBA_8888_PRE)\n");
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tex = make_texture (0x80008080,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE); /* internal format */
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check_texture (state, 3, 0, /* position */
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tex,
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0x80008080); /* expected */
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/* If the user requests an unmultiplied internal texture format, but
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* supplies premultiplied source data, then Cogl should always
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* un-premultiply the source data... */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0x80008080, "
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"src = RGBA_8888_PRE, internal = RGBA_8888)\n");
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tex = make_texture (0x80008080,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888); /* internal format */
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check_texture (state, 4, 0, /* position */
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tex,
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0xff00ff80); /* expected */
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/* If the user allows any internal texture format and provides premultipled
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* source data then by default Cogl shouldn't modify the source data...
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* (In the future there will be additional Cogl API to control this
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* behaviour) */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0x80008080, "
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"src = RGBA_8888_PRE, internal = ANY)\n");
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tex = make_texture (0x80008080,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* src format */
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COGL_PIXEL_FORMAT_ANY); /* internal format */
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check_texture (state, 5, 0, /* position */
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tex,
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0x80008080); /* expected */
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/*
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* Test cogl_texture_set_region() ....
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*/
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xDEADBEEF, "
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"src = RGBA_8888, internal = RGBA_8888)\n");
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tex = make_texture (0xDEADBEEF,
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COGL_PIXEL_FORMAT_RGBA_8888, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888); /* internal format */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("set_region (0xff00ff80, RGBA_8888)\n");
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tex_data = gen_tex_data (0xff00ff80);
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cogl_texture_set_region (tex,
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0, 0, /* src x, y */
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0, 0, /* dst x, y */
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QUAD_WIDTH, QUAD_WIDTH, /* dst width, height */
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QUAD_WIDTH, QUAD_WIDTH, /* src width, height */
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COGL_PIXEL_FORMAT_RGBA_8888,
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0, /* auto compute row stride */
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tex_data);
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check_texture (state, 6, 0, /* position */
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tex,
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0xff00ff80); /* expected */
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/* Updating a texture region for an unmultiplied texture using premultiplied
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* region data should result in Cogl unmultiplying the given region data...
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*/
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xDEADBEEF, "
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"src = RGBA_8888, internal = RGBA_8888)\n");
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tex = make_texture (0xDEADBEEF,
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COGL_PIXEL_FORMAT_RGBA_8888, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888); /* internal format */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("set_region (0x80008080, RGBA_8888_PRE)\n");
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tex_data = gen_tex_data (0x80008080);
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cogl_texture_set_region (tex,
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0, 0, /* src x, y */
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0, 0, /* dst x, y */
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QUAD_WIDTH, QUAD_WIDTH, /* dst width, height */
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QUAD_WIDTH, QUAD_WIDTH, /* src width, height */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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0, /* auto compute row stride */
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tex_data);
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check_texture (state, 7, 0, /* position */
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tex,
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0xff00ff80); /* expected */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xDEADBEEF, "
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"src = RGBA_8888_PRE, "
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"internal = RGBA_8888_PRE)\n");
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tex = make_texture (0xDEADBEEF,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE); /* internal format */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("set_region (0x80008080, RGBA_8888_PRE)\n");
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tex_data = gen_tex_data (0x80008080);
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cogl_texture_set_region (tex,
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0, 0, /* src x, y */
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0, 0, /* dst x, y */
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QUAD_WIDTH, QUAD_WIDTH, /* dst width, height */
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QUAD_WIDTH, QUAD_WIDTH, /* src width, height */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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0, /* auto compute row stride */
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tex_data);
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check_texture (state, 8, 0, /* position */
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tex,
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0x80008080); /* expected */
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/* Updating a texture region for a premultiplied texture using unmultiplied
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* region data should result in Cogl premultiplying the given region data...
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*/
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("make_texture (0xDEADBEEF, "
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"src = RGBA_8888_PRE, "
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"internal = RGBA_8888_PRE)\n");
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tex = make_texture (0xDEADBEEF,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE, /* src format */
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COGL_PIXEL_FORMAT_RGBA_8888_PRE); /* internal format */
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if (state->frame > SKIP_FRAMES && g_test_verbose ())
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g_print ("set_region (0xff00ff80, RGBA_8888)\n");
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tex_data = gen_tex_data (0xff00ff80);
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cogl_texture_set_region (tex,
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0, 0, /* src x, y */
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0, 0, /* dst x, y */
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QUAD_WIDTH, QUAD_WIDTH, /* dst width, height */
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QUAD_WIDTH, QUAD_WIDTH, /* src width, height */
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COGL_PIXEL_FORMAT_RGBA_8888,
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0, /* auto compute row stride */
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tex_data);
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check_texture (state, 9, 0, /* position */
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tex,
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0x80008080); /* expected */
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/* XXX: Experiments have shown that for some buggy drivers, when using
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* glReadPixels there is some kind of race, so we delay our test for a
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* few frames and a few seconds:
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*/
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frame_num = state->frame++;
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if (frame_num < SKIP_FRAMES)
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g_usleep (G_USEC_PER_SEC);
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/* Comment this out if you want visual feedback for what this test paints */
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#if 1
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if (frame_num > SKIP_FRAMES)
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clutter_main_quit ();
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#endif
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}
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static gboolean
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queue_redraw (gpointer 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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void
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test_premult (TestConformSimpleFixture *fixture,
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gconstpointer data)
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{
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TestState state;
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ClutterActor *stage;
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ClutterActor *group;
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guint idle_source;
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state.frame = 0;
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state.passthrough_material = cogl_material_new ();
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cogl_material_set_blend (state.passthrough_material,
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"RGBA = ADD (SRC_COLOR, 0)", NULL);
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cogl_material_set_layer_combine (state.passthrough_material, 0,
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"RGBA = REPLACE (TEXTURE)", NULL);
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stage = clutter_stage_get_default ();
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clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
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clutter_actor_get_geometry (stage, &state.stage_geom);
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group = clutter_group_new ();
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), group);
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/* We force continuous redrawing of the stage, since we need to skip
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* the first few frames, and we wont be doing anything else that
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* will trigger redrawing. */
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idle_source = g_idle_add (queue_redraw, stage);
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g_signal_connect (group, "paint", G_CALLBACK (on_paint), &state);
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clutter_actor_show_all (stage);
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clutter_main ();
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g_source_remove (idle_source);
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if (g_test_verbose ())
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g_print ("OK\n");
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}
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