diff options
Diffstat (limited to 'cogl/tests/conform/test-vertex-buffer-contiguous.c')
| -rw-r--r-- | cogl/tests/conform/test-vertex-buffer-contiguous.c | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/cogl/tests/conform/test-vertex-buffer-contiguous.c b/cogl/tests/conform/test-vertex-buffer-contiguous.c new file mode 100644 index 000000000..1cd7b456b --- /dev/null +++ b/cogl/tests/conform/test-vertex-buffer-contiguous.c @@ -0,0 +1,257 @@ + +#include <clutter/clutter.h> +#include <cogl/cogl.h> + +#include "test-conform-common.h" + +/* This test verifies that the simplest usage of the vertex buffer API, + * where we add contiguous (x,y) GLfloat vertices, and RGBA GLubyte color + * attributes to a buffer, submit, and draw. + * + * It also tries to verify that the enable/disable attribute APIs are working + * too. + * + * If you want visual feedback of what this test paints for debugging purposes, + * then remove the call to clutter_main_quit() in validate_result. + */ + +typedef struct _TestState +{ + CoglHandle buffer; + CoglHandle texture; + CoglHandle material; + ClutterGeometry stage_geom; +} TestState; + +static void +validate_result (TestState *state) +{ + GLubyte pixel[4]; + GLint y_off = 90; + + if (cogl_test_verbose ()) + g_print ("y_off = %d\n", y_off); + + /* NB: We ignore the alpha, since we don't know if our render target is + * RGB or RGBA */ + +#define RED 0 +#define GREEN 1 +#define BLUE 2 + + /* Should see a blue pixel */ + cogl_read_pixels (10, y_off, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + if (cogl_test_verbose ()) + g_print ("pixel 0 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]); + g_assert (pixel[RED] == 0 && pixel[GREEN] == 0 && pixel[BLUE] != 0); + + /* Should see a red pixel */ + cogl_read_pixels (110, y_off, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + if (cogl_test_verbose ()) + g_print ("pixel 1 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]); + g_assert (pixel[RED] != 0 && pixel[GREEN] == 0 && pixel[BLUE] == 0); + + /* Should see a blue pixel */ + cogl_read_pixels (210, y_off, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + if (cogl_test_verbose ()) + g_print ("pixel 2 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]); + g_assert (pixel[RED] == 0 && pixel[GREEN] == 0 && pixel[BLUE] != 0); + + /* Should see a green pixel, at bottom of 4th triangle */ + cogl_read_pixels (310, y_off, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + if (cogl_test_verbose ()) + g_print ("pixel 3 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]); + g_assert (pixel[GREEN] > pixel[RED] && pixel[GREEN] > pixel[BLUE]); + + /* Should see a red pixel, at top of 4th triangle */ + cogl_read_pixels (310, y_off - 70, 1, 1, + COGL_READ_PIXELS_COLOR_BUFFER, + COGL_PIXEL_FORMAT_RGBA_8888_PRE, + pixel); + if (cogl_test_verbose ()) + g_print ("pixel 4 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]); + g_assert (pixel[RED] > pixel[GREEN] && pixel[RED] > pixel[BLUE]); + + +#undef RED +#undef GREEN +#undef BLUE + + /* Comment this out if you want visual feedback of what this test + * paints. + */ + clutter_main_quit (); +} + +static void +on_paint (ClutterActor *actor, TestState *state) +{ + /* Draw a faded blue triangle */ + cogl_vertex_buffer_enable (state->buffer, "gl_Color::blue"); + cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff); + cogl_vertex_buffer_draw (state->buffer, + GL_TRIANGLE_STRIP, /* mode */ + 0, /* first */ + 3); /* count */ + + /* Draw a red triangle */ + /* Here we are testing that the disable attribute works; if it doesn't + * the triangle will remain faded blue */ + cogl_translate (100, 0, 0); + cogl_vertex_buffer_disable (state->buffer, "gl_Color::blue"); + cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff); + cogl_vertex_buffer_draw (state->buffer, + GL_TRIANGLE_STRIP, /* mode */ + 0, /* first */ + 3); /* count */ + + /* Draw a faded blue triangle */ + /* Here we are testing that the re-enable works; if it doesn't + * the triangle will remain red */ + cogl_translate (100, 0, 0); + cogl_vertex_buffer_enable (state->buffer, "gl_Color::blue"); + cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff); + cogl_vertex_buffer_draw (state->buffer, + GL_TRIANGLE_STRIP, /* mode */ + 0, /* first */ + 3); /* count */ + + /* Draw a textured triangle */ + cogl_translate (100, 0, 0); + cogl_vertex_buffer_disable (state->buffer, "gl_Color::blue"); + cogl_set_source (state->material); + cogl_material_set_color4ub (state->material, 0xff, 0xff, 0xff, 0xff); + cogl_vertex_buffer_draw (state->buffer, + GL_TRIANGLE_STRIP, /* mode */ + 0, /* first */ + 3); /* count */ + + validate_result (state); +} + +static CoglBool +queue_redraw (gpointer stage) +{ + clutter_actor_queue_redraw (CLUTTER_ACTOR (stage)); + + return TRUE; +} + + + +void +test_vertex_buffer_contiguous (TestUtilsGTestFixture *fixture, + void *data) +{ + TestState state; + ClutterActor *stage; + ClutterColor stage_clr = {0x0, 0x0, 0x0, 0xff}; + ClutterActor *group; + unsigned int idle_source; + guchar tex_data[] = { + 0xff, 0x00, 0x00, 0xff, + 0xff, 0x00, 0x00, 0xff, + 0x00, 0xff, 0x00, 0xff, + 0x00, 0xff, 0x00, 0xff + }; + + stage = clutter_stage_get_default (); + + clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_clr); + clutter_actor_get_geometry (stage, &state.stage_geom); + + group = clutter_group_new (); + clutter_actor_set_size (group, + state.stage_geom.width, + state.stage_geom.height); + clutter_container_add_actor (CLUTTER_CONTAINER (stage), group); + + /* We force continuous redrawing incase someone comments out the + * clutter_main_quit and wants visual feedback for the test since we + * wont be doing anything else that will trigger redrawing. */ + idle_source = g_idle_add (queue_redraw, stage); + + g_signal_connect (group, "paint", G_CALLBACK (on_paint), &state); + + state.texture = cogl_texture_new_from_data (2, 2, + COGL_TEXTURE_NO_SLICING, + COGL_PIXEL_FORMAT_RGBA_8888, + COGL_PIXEL_FORMAT_ANY, + 0, /* auto calc row stride */ + tex_data); + + state.material = cogl_material_new (); + cogl_material_set_color4ub (state.material, 0x00, 0xff, 0x00, 0xff); + cogl_material_set_layer (state.material, 0, state.texture); + + { + GLfloat triangle_verts[3][2] = + { + {0.0, 0.0}, + {100.0, 100.0}, + {0.0, 100.0} + }; + GLbyte triangle_colors[3][4] = + { + {0x00, 0x00, 0xff, 0xff}, /* blue */ + {0x00, 0x00, 0xff, 0x00}, /* transparent blue */ + {0x00, 0x00, 0xff, 0x00} /* transparent blue */ + }; + GLfloat triangle_tex_coords[3][2] = + { + {0.0, 0.0}, + {1.0, 1.0}, + {0.0, 1.0} + }; + state.buffer = cogl_vertex_buffer_new (3 /* n vertices */); + cogl_vertex_buffer_add (state.buffer, + "gl_Vertex", + 2, /* n components */ + GL_FLOAT, + FALSE, /* normalized */ + 0, /* stride */ + triangle_verts); + cogl_vertex_buffer_add (state.buffer, + "gl_Color::blue", + 4, /* n components */ + GL_UNSIGNED_BYTE, + FALSE, /* normalized */ + 0, /* stride */ + triangle_colors); + cogl_vertex_buffer_add (state.buffer, + "gl_MultiTexCoord0", + 2, /* n components */ + GL_FLOAT, + FALSE, /* normalized */ + 0, /* stride */ + triangle_tex_coords); + + cogl_vertex_buffer_submit (state.buffer); + } + + clutter_actor_show_all (stage); + + clutter_main (); + + cogl_handle_unref (state.buffer); + cogl_handle_unref (state.material); + cogl_handle_unref (state.texture); + + g_source_remove (idle_source); + + if (cogl_test_verbose ()) + g_print ("OK\n"); +} + |