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f1752ff3ba
Mixing declarations and code causes problems for MSVC as it is a C99 feature so we should try to avoid it.
334 lines
9.1 KiB
C
334 lines
9.1 KiB
C
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#include <clutter/clutter.h>
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#ifndef COGL_ENABLE_EXPERIMENTAL_API
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#define COGL_ENABLE_EXPERIMENTAL_API
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#endif
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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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typedef struct _TestState
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{
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ClutterGeometry stage_geom;
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} TestState;
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typedef struct
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{
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guint32 color;
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float depth;
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gboolean test_enable;
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CoglDepthTestFunction test_function;
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gboolean write_enable;
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float range_near;
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float range_far;
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} TestDepthState;
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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_cmpint (pixel[RED], ==, r);
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g_assert_cmpint (pixel[GREEN], ==, g);
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g_assert_cmpint (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 gboolean
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draw_rectangle (TestState *state,
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int x,
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int y,
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TestDepthState *rect_state)
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{
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guint8 Cr = MASK_RED (rect_state->color);
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guint8 Cg = MASK_GREEN (rect_state->color);
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guint8 Cb = MASK_BLUE (rect_state->color);
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guint8 Ca = MASK_ALPHA (rect_state->color);
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CoglHandle material;
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material = cogl_material_new ();
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cogl_material_set_depth_test_enabled (material, rect_state->test_enable);
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cogl_material_set_depth_test_function (material, rect_state->test_function);
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cogl_material_set_depth_writing_enabled (material, rect_state->write_enable);
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if (!cogl_material_set_depth_range (material,
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rect_state->range_near,
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rect_state->range_far,
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NULL))
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{
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cogl_handle_unref (material);
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return FALSE;
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}
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cogl_material_set_color4ub (material, Cr, Cg, Cb, Ca);
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cogl_set_source (material);
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cogl_push_matrix ();
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cogl_translate (0, 0, rect_state->depth);
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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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cogl_pop_matrix ();
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cogl_handle_unref (material);
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return TRUE;
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}
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static void
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test_depth (TestState *state,
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int x,
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int y,
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TestDepthState *rect0_state,
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TestDepthState *rect1_state,
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TestDepthState *rect2_state,
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guint32 expected_result)
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{
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GLubyte pixel[4];
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GLint y_off;
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GLint x_off;
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gboolean missing_feature = FALSE;
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if (rect0_state)
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missing_feature |= !draw_rectangle (state, x, y, rect0_state);
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if (rect1_state)
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missing_feature |= !draw_rectangle (state, x, y, rect1_state);
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if (rect2_state)
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missing_feature |= !draw_rectangle (state, x, y, rect2_state);
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/* We don't consider it an error that we can't test something
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* the driver doesn't support. */
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if (missing_feature)
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return;
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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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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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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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CoglMatrix projection_save;
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CoglMatrix identity;
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/* We don't want the effects of perspective division to interfere
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* with the positions of our test rectangles on the x and y axis
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* so we use an orthographic projection...
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*/
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cogl_get_projection_matrix (&projection_save);
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cogl_ortho (0, state->stage_geom.width, /* left, right */
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state->stage_geom.height, 0, /* bottom, top */
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-1, 100 /* z near, far */);
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cogl_push_matrix ();
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cogl_matrix_init_identity (&identity);
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cogl_set_modelview_matrix (&identity);
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/* Sanity check a few of the different depth test functions
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* and that depth writing can be disabled... */
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{
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/* Closest */
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TestDepthState rect0_state = {
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0xff0000ff, /* rgba color */
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-10, /* depth */
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FALSE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_ALWAYS,
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TRUE, /* depth write enable */
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0, 1 /* depth range */
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};
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/* Furthest */
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TestDepthState rect1_state = {
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0x00ff00ff, /* rgba color */
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-70, /* depth */
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TRUE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_ALWAYS,
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TRUE, /* depth write enable */
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0, 1 /* depth range */
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};
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/* In the middle */
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TestDepthState rect2_state = {
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0x0000ffff, /* rgba color */
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-20, /* depth */
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TRUE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_NEVER,
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TRUE, /* depth write enable */
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0, 1 /* depth range */
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};
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test_depth (state, 0, 0, /* position */
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&rect0_state, &rect1_state, &rect2_state,
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0x00ff00ff); /* expected */
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rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_ALWAYS;
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test_depth (state, 1, 0, /* position */
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&rect0_state, &rect1_state, &rect2_state,
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0x0000ffff); /* expected */
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rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_LESS;
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test_depth (state, 2, 0, /* position */
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&rect0_state, &rect1_state, &rect2_state,
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0x0000ffff); /* expected */
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rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_GREATER;
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test_depth (state, 3, 0, /* position */
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&rect0_state, &rect1_state, &rect2_state,
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0x00ff00ff); /* expected */
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rect0_state.test_enable = TRUE;
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rect1_state.write_enable = FALSE;
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test_depth (state, 4, 0, /* position */
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&rect0_state, &rect1_state, &rect2_state,
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0x0000ffff); /* expected */
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}
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/* Check that the depth buffer values can be mapped into different
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* ranges... */
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{
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/* Closest by depth, furthest by depth range */
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TestDepthState rect0_state = {
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0xff0000ff, /* rgba color */
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-10, /* depth */
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TRUE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_ALWAYS,
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TRUE, /* depth write enable */
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0.5, 1 /* depth range */
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};
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/* Furthest by depth, nearest by depth range */
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TestDepthState rect1_state = {
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0x00ff00ff, /* rgba color */
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-70, /* depth */
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TRUE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_GREATER,
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TRUE, /* depth write enable */
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0, 0.5 /* depth range */
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};
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test_depth (state, 0, 1, /* position */
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&rect0_state, &rect1_state, NULL,
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0xff0000ff); /* expected */
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}
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/* Test that the legacy cogl_set_depth_test_enabled() API still
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* works... */
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{
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/* Nearest */
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TestDepthState rect0_state = {
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0xff0000ff, /* rgba color */
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-10, /* depth */
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FALSE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_LESS,
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TRUE, /* depth write enable */
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0, 1 /* depth range */
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};
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/* Furthest */
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TestDepthState rect1_state = {
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0x00ff00ff, /* rgba color */
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-70, /* depth */
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FALSE, /* depth test enable */
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COGL_DEPTH_TEST_FUNCTION_LESS,
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TRUE, /* depth write enable */
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0, 1 /* depth range */
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};
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cogl_set_depth_test_enabled (TRUE);
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test_depth (state, 0, 2, /* position */
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&rect0_state, &rect1_state, NULL,
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0xff0000ff); /* expected */
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cogl_set_depth_test_enabled (FALSE);
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test_depth (state, 1, 2, /* position */
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&rect0_state, &rect1_state, NULL,
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0x00ff00ff); /* expected */
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}
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cogl_pop_matrix ();
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cogl_set_projection_matrix (&projection_save);
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clutter_main_quit ();
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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_depth_test (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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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 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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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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