871683abd3
GLES 2 doesn't have GL_MAX_TEXTURE_UNITS. Instead the cogl backend uses GL_MAX_TEXTURE_IMAGE_UNITS with a maximum limit of 16. The same restriction is now used in the test.
268 lines
7.6 KiB
C
268 lines
7.6 KiB
C
#include "config.h"
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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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} TestState;
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static void
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check_pixel (TestState *state, int x, int y, guint32 color)
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{
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GLint y_off;
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GLint x_off;
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GLubyte pixel[4];
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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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/* See what we got... */
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/* NB: glReadPixels is done in GL screen space so y = 0 is at the bottom */
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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_PRE,
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pixel);
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if (g_test_verbose ())
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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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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 void
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test_invalid_texture_layers (TestState *state, int x, int y)
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{
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CoglHandle material = cogl_material_new ();
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CoglTextureVertex verts[4] = {
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{ .x = 0, .y = 0, .z = 0 },
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{ .x = 0, .y = QUAD_WIDTH, .z = 0 },
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{ .x = QUAD_WIDTH, .y = QUAD_WIDTH, .z = 0 },
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{ .x = QUAD_WIDTH, .y = 0, .z = 0 },
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};
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CoglHandle vbo;
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cogl_push_matrix ();
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cogl_translate (x * QUAD_WIDTH, y * QUAD_WIDTH, 0);
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/* explicitly create a layer with an invalid handle. This may be desireable
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* if the user also sets a texture combine string that e.g. refers to a
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* constant color. */
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cogl_material_set_layer (material, 0, COGL_INVALID_HANDLE);
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cogl_set_source (material);
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cogl_rectangle (0, 0, QUAD_WIDTH, QUAD_WIDTH);
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cogl_translate (0, QUAD_WIDTH, 0);
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cogl_polygon (verts, 4, FALSE);
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cogl_translate (0, QUAD_WIDTH, 0);
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vbo = cogl_vertex_buffer_new (4);
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cogl_vertex_buffer_add (vbo,
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"gl_Vertex",
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2, /* n components */
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COGL_ATTRIBUTE_TYPE_FLOAT,
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FALSE, /* normalized */
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sizeof (CoglTextureVertex), /* stride */
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verts);
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cogl_vertex_buffer_draw (vbo,
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COGL_VERTICES_MODE_TRIANGLE_FAN,
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0, /* first */
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4); /* count */
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cogl_handle_unref (vbo);
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cogl_pop_matrix ();
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cogl_handle_unref (material);
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/* We expect a white fallback material to be used */
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check_pixel (state, x, y, 0xffffffff);
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check_pixel (state, x, y+1, 0xffffffff);
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check_pixel (state, x, y+2, 0xffffffff);
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}
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static void
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test_using_all_layers (TestState *state, int x, int y)
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{
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CoglHandle material = cogl_material_new ();
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guint8 white_pixel[] = { 0xff, 0xff, 0xff, 0xff };
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guint8 red_pixel[] = { 0xff, 0x00, 0x00, 0xff };
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CoglHandle white_texture;
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CoglHandle red_texture;
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GLint n_layers;
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int i;
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cogl_push_matrix ();
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cogl_translate (x * QUAD_WIDTH, y * QUAD_WIDTH, 0);
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/* Create a material that uses the maximum number of layers. All but
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the last layer will use a solid white texture. The last layer
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will use a red texture. The layers will all be modulated together
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so the final fragment should be red. */
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white_texture = cogl_texture_new_from_data (1, 1, COGL_TEXTURE_NONE,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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COGL_PIXEL_FORMAT_ANY,
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4, white_pixel);
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red_texture = cogl_texture_new_from_data (1, 1, COGL_TEXTURE_NONE,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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COGL_PIXEL_FORMAT_ANY,
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4, red_pixel);
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/* FIXME: Cogl doesn't provide a way to query the maximum number of
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texture layers so for now we'll just ask GL directly. */
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#ifdef HAVE_COGL_GLES2
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/* GLES 2 doesn't have GL_MAX_TEXTURE_UNITS and it uses
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GL_MAX_TEXTURE_IMAGE_UNITS instead */
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glGetIntegerv (GL_MAX_TEXTURE_IMAGE_UNITS, &n_layers);
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/* Cogl can't support more than 16 layers under GLES 2 */
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if (n_layers > 16)
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n_layers = 16;
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#else
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glGetIntegerv (GL_MAX_TEXTURE_UNITS, &n_layers);
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/* Cogl currently can't cope with more than 32 layers so we'll also
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limit the maximum to that. */
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if (n_layers > 32)
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n_layers = 32;
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#endif
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for (i = 0; i < n_layers; i++)
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{
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cogl_material_set_layer_filters (material, i,
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COGL_MATERIAL_FILTER_NEAREST,
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COGL_MATERIAL_FILTER_NEAREST);
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cogl_material_set_layer (material, i,
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i == n_layers - 1 ? red_texture : white_texture);
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}
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cogl_set_source (material);
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cogl_rectangle (0, 0, QUAD_WIDTH, QUAD_WIDTH);
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cogl_pop_matrix ();
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cogl_handle_unref (material);
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cogl_handle_unref (white_texture);
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cogl_handle_unref (red_texture);
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/* We expect the final fragment to be red */
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check_pixel (state, x, y, 0xff0000ff);
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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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test_invalid_texture_layers (state,
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0, 0 /* position */
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);
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test_using_all_layers (state,
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1, 0 /* position */
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);
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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_cogl_materials (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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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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