diff options
Diffstat (limited to 'cogl/tests/conform/test-depth-test.c')
| -rw-r--r-- | cogl/tests/conform/test-depth-test.c | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/cogl/tests/conform/test-depth-test.c b/cogl/tests/conform/test-depth-test.c new file mode 100644 index 000000000..bfa9d0e1f --- /dev/null +++ b/cogl/tests/conform/test-depth-test.c @@ -0,0 +1,301 @@ +#define COGL_VERSION_MIN_REQUIRED COGL_VERSION_1_0 + +#include <cogl/cogl.h> + +#include <string.h> + +#include "test-utils.h" + +#define QUAD_WIDTH 20 + +#define RED 0 +#define GREEN 1 +#define BLUE 2 +#define ALPHA 3 + +#define MASK_RED(COLOR) ((COLOR & 0xff000000) >> 24) +#define MASK_GREEN(COLOR) ((COLOR & 0xff0000) >> 16) +#define MASK_BLUE(COLOR) ((COLOR & 0xff00) >> 8) +#define MASK_ALPHA(COLOR) (COLOR & 0xff) + +typedef struct _TestState +{ + int padding; +} TestState; + +typedef struct +{ + uint32_t color; + float depth; + CoglBool test_enable; + CoglDepthTestFunction test_function; + CoglBool write_enable; + CoglBool fb_write_enable; + float range_near; + float range_far; +} TestDepthState; + +static CoglBool +draw_rectangle (TestState *state, + int x, + int y, + TestDepthState *rect_state, + CoglBool legacy_mode) +{ + uint8_t Cr = MASK_RED (rect_state->color); + uint8_t Cg = MASK_GREEN (rect_state->color); + uint8_t Cb = MASK_BLUE (rect_state->color); + uint8_t Ca = MASK_ALPHA (rect_state->color); + CoglPipeline *pipeline; + CoglDepthState depth_state; + + cogl_depth_state_init (&depth_state); + cogl_depth_state_set_test_enabled (&depth_state, rect_state->test_enable); + cogl_depth_state_set_test_function (&depth_state, rect_state->test_function); + cogl_depth_state_set_write_enabled (&depth_state, rect_state->write_enable); + cogl_depth_state_set_range (&depth_state, + rect_state->range_near, + rect_state->range_far); + + pipeline = cogl_pipeline_new (test_ctx); + if (!cogl_pipeline_set_depth_state (pipeline, &depth_state, NULL)) + { + cogl_object_unref (pipeline); + return FALSE; + } + + if (!legacy_mode) + { + cogl_pipeline_set_color4ub (pipeline, Cr, Cg, Cb, Ca); + + cogl_framebuffer_set_depth_write_enabled (test_fb, + rect_state->fb_write_enable); + cogl_framebuffer_push_matrix (test_fb); + cogl_framebuffer_translate (test_fb, 0, 0, rect_state->depth); + cogl_framebuffer_draw_rectangle (test_fb, + pipeline, + x * QUAD_WIDTH, + y * QUAD_WIDTH, + x * QUAD_WIDTH + QUAD_WIDTH, + y * QUAD_WIDTH + QUAD_WIDTH); + cogl_framebuffer_pop_matrix (test_fb); + } + else + { + cogl_push_framebuffer (test_fb); + cogl_push_matrix (); + cogl_set_source_color4ub (Cr, Cg, Cb, Ca); + cogl_translate (0, 0, rect_state->depth); + cogl_rectangle (x * QUAD_WIDTH, + y * QUAD_WIDTH, + x * QUAD_WIDTH + QUAD_WIDTH, + y * QUAD_WIDTH + QUAD_WIDTH); + cogl_pop_matrix (); + cogl_pop_framebuffer (); + } + + cogl_object_unref (pipeline); + + return TRUE; +} + +static void +test_depth (TestState *state, + int x, + int y, + TestDepthState *rect0_state, + TestDepthState *rect1_state, + TestDepthState *rect2_state, + CoglBool legacy_mode, + uint32_t expected_result) +{ + CoglBool missing_feature = FALSE; + + if (rect0_state) + missing_feature |= !draw_rectangle (state, x, y, rect0_state, legacy_mode); + if (rect1_state) + missing_feature |= !draw_rectangle (state, x, y, rect1_state, legacy_mode); + if (rect2_state) + missing_feature |= !draw_rectangle (state, x, y, rect2_state, legacy_mode); + + /* We don't consider it an error that we can't test something + * the driver doesn't support. */ + if (missing_feature) + return; + + test_utils_check_pixel (test_fb, + x * QUAD_WIDTH + (QUAD_WIDTH / 2), + y * QUAD_WIDTH + (QUAD_WIDTH / 2), + expected_result); +} + +static void +paint (TestState *state) +{ + /* Sanity check a few of the different depth test functions + * and that depth writing can be disabled... */ + + { + /* Closest */ + TestDepthState rect0_state = { + 0xff0000ff, /* rgba color */ + -10, /* depth */ + FALSE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_ALWAYS, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 1 /* depth range */ + }; + /* Furthest */ + TestDepthState rect1_state = { + 0x00ff00ff, /* rgba color */ + -70, /* depth */ + TRUE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_ALWAYS, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 1 /* depth range */ + }; + /* In the middle */ + TestDepthState rect2_state = { + 0x0000ffff, /* rgba color */ + -20, /* depth */ + TRUE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_NEVER, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 1 /* depth range */ + }; + + test_depth (state, 0, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x00ff00ff); /* expected */ + + rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_ALWAYS; + test_depth (state, 1, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x0000ffff); /* expected */ + + rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_LESS; + test_depth (state, 2, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x0000ffff); /* expected */ + + rect2_state.test_function = COGL_DEPTH_TEST_FUNCTION_GREATER; + test_depth (state, 3, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x00ff00ff); /* expected */ + + rect0_state.test_enable = TRUE; + rect1_state.write_enable = FALSE; + test_depth (state, 4, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x0000ffff); /* expected */ + + rect1_state.write_enable = TRUE; + rect1_state.fb_write_enable = FALSE; + test_depth (state, 4, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x0000ffff); /* expected */ + + /* Re-enable FB depth writing to verify state flush */ + rect1_state.write_enable = TRUE; + rect1_state.fb_write_enable = TRUE; + test_depth (state, 4, 0, /* position */ + &rect0_state, &rect1_state, &rect2_state, + FALSE, /* legacy mode */ + 0x00ff00ff); /* expected */ + } + + /* Check that the depth buffer values can be mapped into different + * ranges... */ + + { + /* Closest by depth, furthest by depth range */ + TestDepthState rect0_state = { + 0xff0000ff, /* rgba color */ + -10, /* depth */ + TRUE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_ALWAYS, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0.5, 1 /* depth range */ + }; + /* Furthest by depth, nearest by depth range */ + TestDepthState rect1_state = { + 0x00ff00ff, /* rgba color */ + -70, /* depth */ + TRUE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_GREATER, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 0.5 /* depth range */ + }; + + test_depth (state, 0, 1, /* position */ + &rect0_state, &rect1_state, NULL, + FALSE, /* legacy mode */ + 0xff0000ff); /* expected */ + } + + /* Test that the legacy cogl_set_depth_test_enabled() API still + * works... */ + + { + /* Nearest */ + TestDepthState rect0_state = { + 0xff0000ff, /* rgba color */ + -10, /* depth */ + FALSE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_LESS, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 1 /* depth range */ + }; + /* Furthest */ + TestDepthState rect1_state = { + 0x00ff00ff, /* rgba color */ + -70, /* depth */ + FALSE, /* depth test enable */ + COGL_DEPTH_TEST_FUNCTION_LESS, + TRUE, /* depth write enable */ + TRUE, /* FB depth write enable */ + 0, 1 /* depth range */ + }; + + cogl_set_depth_test_enabled (TRUE); + test_depth (state, 0, 2, /* position */ + &rect0_state, &rect1_state, NULL, + TRUE, /* legacy mode */ + 0xff0000ff); /* expected */ + cogl_set_depth_test_enabled (FALSE); + test_depth (state, 1, 2, /* position */ + &rect0_state, &rect1_state, NULL, + TRUE, /* legacy mode */ + 0x00ff00ff); /* expected */ + } +} + +void +test_depth_test (void) +{ + TestState state; + + cogl_framebuffer_orthographic (test_fb, 0, 0, + cogl_framebuffer_get_width (test_fb), + cogl_framebuffer_get_height (test_fb), + -1, + 100); + + paint (&state); + + if (cogl_test_verbose ()) + g_print ("OK\n"); +} + |