3881fd3259
This adds experimental 2.0 api replacements for the cogl_rectangle[_*]
functions that don't depend on having a current pipeline set on the
context via cogl_{set,push}_source() or having a current framebuffer set
on the context via cogl_push_framebuffer(). The aim for 2.0 is to switch
away from having a statefull context that affects drawing to having
framebuffer drawing apis that are explicitly passed a framebuffer and
pipeline.
To test this change several of the conformance tests were updated to use
this api instead of cogl_rectangle and
cogl_rectangle_with_texture_coords. Since it's quite laborious going
through all of the conformance tests the opportunity was taken to make
other clean ups in the conformance tests to replace other uses of
1.x api with experimental 2.0 api so long as that didn't affect what was
being tested.
258 lines
7.6 KiB
C
258 lines
7.6 KiB
C
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#include <clutter/clutter.h>
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#include <cogl/cogl.h>
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#include "test-conform-common.h"
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/* This test verifies that the simplest usage of the vertex buffer API,
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* where we add contiguous (x,y) GLfloat vertices, and RGBA GLubyte color
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* attributes to a buffer, submit, and draw.
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*
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* It also tries to verify that the enable/disable attribute APIs are working
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* too.
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*
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* If you want visual feedback of what this test paints for debugging purposes,
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* then remove the call to clutter_main_quit() in validate_result.
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*/
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typedef struct _TestState
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{
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CoglHandle buffer;
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CoglHandle texture;
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CoglHandle material;
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ClutterGeometry stage_geom;
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} TestState;
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static void
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validate_result (TestState *state)
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{
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GLubyte pixel[4];
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GLint y_off = 90;
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if (cogl_test_verbose ())
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g_print ("y_off = %d\n", y_off);
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/* NB: 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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#define RED 0
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#define GREEN 1
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#define BLUE 2
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/* Should see a blue pixel */
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cogl_read_pixels (10, 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 (cogl_test_verbose ())
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g_print ("pixel 0 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]);
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g_assert (pixel[RED] == 0 && pixel[GREEN] == 0 && pixel[BLUE] != 0);
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/* Should see a red pixel */
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cogl_read_pixels (110, 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 (cogl_test_verbose ())
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g_print ("pixel 1 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]);
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g_assert (pixel[RED] != 0 && pixel[GREEN] == 0 && pixel[BLUE] == 0);
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/* Should see a blue pixel */
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cogl_read_pixels (210, 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 (cogl_test_verbose ())
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g_print ("pixel 2 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]);
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g_assert (pixel[RED] == 0 && pixel[GREEN] == 0 && pixel[BLUE] != 0);
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/* Should see a green pixel, at bottom of 4th triangle */
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cogl_read_pixels (310, 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 (cogl_test_verbose ())
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g_print ("pixel 3 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]);
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g_assert (pixel[GREEN] > pixel[RED] && pixel[GREEN] > pixel[BLUE]);
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/* Should see a red pixel, at top of 4th triangle */
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cogl_read_pixels (310, y_off - 70, 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 (cogl_test_verbose ())
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g_print ("pixel 4 = %x, %x, %x\n", pixel[RED], pixel[GREEN], pixel[BLUE]);
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g_assert (pixel[RED] > pixel[GREEN] && pixel[RED] > pixel[BLUE]);
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#undef RED
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#undef GREEN
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#undef BLUE
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/* Comment this out if you want visual feedback of what this test
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* paints.
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*/
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clutter_main_quit ();
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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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/* Draw a faded blue triangle */
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cogl_vertex_buffer_enable (state->buffer, "gl_Color::blue");
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cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
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cogl_vertex_buffer_draw (state->buffer,
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GL_TRIANGLE_STRIP, /* mode */
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0, /* first */
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3); /* count */
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/* Draw a red triangle */
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/* Here we are testing that the disable attribute works; if it doesn't
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* the triangle will remain faded blue */
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cogl_translate (100, 0, 0);
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cogl_vertex_buffer_disable (state->buffer, "gl_Color::blue");
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cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
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cogl_vertex_buffer_draw (state->buffer,
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GL_TRIANGLE_STRIP, /* mode */
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0, /* first */
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3); /* count */
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/* Draw a faded blue triangle */
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/* Here we are testing that the re-enable works; if it doesn't
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* the triangle will remain red */
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cogl_translate (100, 0, 0);
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cogl_vertex_buffer_enable (state->buffer, "gl_Color::blue");
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cogl_set_source_color4ub (0xff, 0x00, 0x00, 0xff);
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cogl_vertex_buffer_draw (state->buffer,
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GL_TRIANGLE_STRIP, /* mode */
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0, /* first */
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3); /* count */
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/* Draw a textured triangle */
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cogl_translate (100, 0, 0);
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cogl_vertex_buffer_disable (state->buffer, "gl_Color::blue");
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cogl_set_source (state->material);
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cogl_material_set_color4ub (state->material, 0xff, 0xff, 0xff, 0xff);
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cogl_vertex_buffer_draw (state->buffer,
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GL_TRIANGLE_STRIP, /* mode */
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0, /* first */
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3); /* count */
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validate_result (state);
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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_vertex_buffer_contiguous (TestUtilsGTestFixture *fixture,
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void *data)
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{
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TestState state;
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ClutterActor *stage;
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ClutterColor stage_clr = {0x0, 0x0, 0x0, 0xff};
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ClutterActor *group;
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unsigned int idle_source;
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guchar tex_data[] = {
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0xff, 0x00, 0x00, 0xff,
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0xff, 0x00, 0x00, 0xff,
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0x00, 0xff, 0x00, 0xff,
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0x00, 0xff, 0x00, 0xff
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};
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stage = clutter_stage_get_default ();
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clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_clr);
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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_actor_set_size (group,
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state.stage_geom.width,
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state.stage_geom.height);
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), group);
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/* We force continuous redrawing incase someone comments out the
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* clutter_main_quit and wants visual feedback for the test since we
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* wont be doing anything else that 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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state.texture = cogl_texture_new_from_data (2, 2,
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COGL_TEXTURE_NO_SLICING,
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COGL_PIXEL_FORMAT_RGBA_8888,
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COGL_PIXEL_FORMAT_ANY,
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0, /* auto calc row stride */
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tex_data);
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state.material = cogl_material_new ();
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cogl_material_set_color4ub (state.material, 0x00, 0xff, 0x00, 0xff);
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cogl_material_set_layer (state.material, 0, state.texture);
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{
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GLfloat triangle_verts[3][2] =
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{
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{0.0, 0.0},
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{100.0, 100.0},
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{0.0, 100.0}
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};
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GLbyte triangle_colors[3][4] =
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{
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{0x00, 0x00, 0xff, 0xff}, /* blue */
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{0x00, 0x00, 0xff, 0x00}, /* transparent blue */
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{0x00, 0x00, 0xff, 0x00} /* transparent blue */
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};
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GLfloat triangle_tex_coords[3][2] =
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{
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{0.0, 0.0},
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{1.0, 1.0},
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{0.0, 1.0}
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};
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state.buffer = cogl_vertex_buffer_new (3 /* n vertices */);
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cogl_vertex_buffer_add (state.buffer,
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"gl_Vertex",
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2, /* n components */
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GL_FLOAT,
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FALSE, /* normalized */
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0, /* stride */
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triangle_verts);
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cogl_vertex_buffer_add (state.buffer,
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"gl_Color::blue",
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4, /* n components */
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GL_UNSIGNED_BYTE,
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FALSE, /* normalized */
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0, /* stride */
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triangle_colors);
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cogl_vertex_buffer_add (state.buffer,
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"gl_MultiTexCoord0",
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2, /* n components */
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GL_FLOAT,
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FALSE, /* normalized */
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0, /* stride */
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triangle_tex_coords);
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cogl_vertex_buffer_submit (state.buffer);
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}
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clutter_actor_show_all (stage);
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clutter_main ();
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cogl_handle_unref (state.buffer);
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cogl_handle_unref (state.material);
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cogl_handle_unref (state.texture);
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g_source_remove (idle_source);
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if (cogl_test_verbose ())
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g_print ("OK\n");
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}
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