8a5aed36fe
This removes cogl_pixel_array_new which just took a size in bytes. Without the image size and pixel format then the driver often doesn't have enough information to allocate optimal GPU memory that can be textured from directly. This is because GPUs often have ways to spatially alter the layout of a texture to improve cache access patterns which may require special alignment and padding dependant in the images width, height and bpp. Although currently we are limited by OpenGL because it doesn't let us pass on the width and height when allocating a PBO, the hope is that we can define a better extension at some point.
333 lines
8.3 KiB
C
333 lines
8.3 KiB
C
#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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#define TILE_SIZE 32.0f
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enum
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{
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TILE_MAP,
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TILE_SET_DATA,
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NB_TILES,
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TILE_SET_REGION,
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};
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typedef struct test_tile
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{
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ClutterColor color;
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gfloat x, y;
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CoglHandle buffer;
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CoglHandle texture;
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} TestTile;
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static const ClutterColor
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buffer_colors[] =
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{
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};
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static const ClutterColor stage_color = { 0x0, 0x0, 0x0, 0xff };
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typedef struct _TestState
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{
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ClutterActor *stage;
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guint frame;
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TestTile *tiles;
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} TestState;
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static CoglHandle
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create_texture_from_buffer (CoglHandle buffer)
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{
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CoglHandle texture;
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texture = cogl_texture_new_from_buffer (buffer,
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TILE_SIZE, TILE_SIZE,
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COGL_TEXTURE_NO_SLICING,
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COGL_PIXEL_FORMAT_RGBA_8888,
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COGL_PIXEL_FORMAT_RGBA_8888,
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TILE_SIZE * 4,
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0);
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g_assert (texture != COGL_INVALID_HANDLE);
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return texture;
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}
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static void
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create_map_tile (TestTile *tile)
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{
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CoglHandle buffer;
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guchar *map;
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guint i;
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unsigned int stride = 0;
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guint8 *line;
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buffer = cogl_pixel_array_new_with_size (TILE_SIZE,
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TILE_SIZE,
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COGL_PIXEL_FORMAT_RGBA_8888,
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&stride);
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g_assert (cogl_is_pixel_array (buffer));
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g_assert (cogl_is_buffer (buffer));
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cogl_buffer_set_update_hint (buffer, COGL_BUFFER_UPDATE_HINT_DYNAMIC);
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g_assert_cmpint (cogl_buffer_get_update_hint (buffer),
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==,
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COGL_BUFFER_UPDATE_HINT_DYNAMIC);
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map = cogl_buffer_map (buffer, COGL_BUFFER_ACCESS_WRITE);
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g_assert (map);
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line = g_alloca (TILE_SIZE * 4);
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for (i = 0; i < TILE_SIZE; i += 4)
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memcpy (line + i, &tile->color, 4);
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for (i = 0; i < TILE_SIZE; i++)
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memcpy (map + stride, line, 4);
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cogl_buffer_unmap (buffer);
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tile->buffer = buffer;
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tile->texture = create_texture_from_buffer (tile->buffer);
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}
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#if 0
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static void
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create_set_region_tile (TestTile *tile)
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{
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CoglHandle buffer;
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ClutterColor bottom_color;
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guint rowstride = 0;
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guchar *data;
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guint i;
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buffer = cogl_pixel_array_with_size (TILE_SIZE,
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TILE_SIZE,
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COGL_PIXEL_FORMAT_RGBA_8888,
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&rowstride);
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g_assert (cogl_is_pixel_array (buffer));
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g_assert (cogl_is_buffer (buffer));
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/* while at it, set/get the hint */
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cogl_buffer_set_hint (buffer, COGL_BUFFER_HINT_STATIC_TEXTURE);
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g_assert (cogl_buffer_get_hint (buffer) == COGL_BUFFER_HINT_STATIC_TEXTURE);
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data = g_malloc (TILE_SIZE * TILE_SIZE * 4);
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/* create a buffer with the data we want to copy to the buffer */
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for (i = 0; i < TILE_SIZE * TILE_SIZE * 4; i += 4)
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memcpy (data + i, &tile->color, 4);
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cogl_pixel_array_set_region (buffer,
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data,
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TILE_SIZE, TILE_SIZE,
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TILE_SIZE,
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0, 0);
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bottom_color.red = tile->color.red;
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bottom_color.green = tile->color.blue;
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bottom_color.blue = tile->color.green;
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bottom_color.alpha = tile->color.alpha;
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for (i = 0; i < TILE_SIZE / 2; i++)
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memcpy (data + i, &bottom_color, 4);
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cogl_buffer_set_data (buffer, data, 0, TILE_SIZE * TILE_SIZE * 4 / 2);
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g_free (data);
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tile->buffer = buffer;
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tile->texture = create_texture_from_buffer (tile->buffer);
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}
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#endif
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static void
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create_set_data_tile (TestTile *tile)
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{
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CoglHandle buffer;
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guint rowstride = 0;
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gboolean res;
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guchar *data;
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guint i;
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buffer = cogl_pixel_array_new_with_size (TILE_SIZE,
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TILE_SIZE,
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COGL_PIXEL_FORMAT_RGBA_8888,
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&rowstride);
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g_assert (cogl_is_pixel_array (buffer));
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g_assert (cogl_is_buffer (buffer));
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g_assert_cmpint (cogl_buffer_get_size (buffer), ==, rowstride * TILE_SIZE);
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/* create a buffer with the data we want to copy to the buffer */
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data = g_malloc (TILE_SIZE * TILE_SIZE * 4);
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for (i = 0; i < TILE_SIZE * TILE_SIZE * 4; i += 4)
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memcpy (data + i, &tile->color, 4);
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/* FIXME: this doesn't consider the rowstride */
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res = cogl_buffer_set_data (buffer, 0, data, TILE_SIZE * TILE_SIZE * 4);
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g_assert (res);
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g_free (data);
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tile->buffer = buffer;
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tile->texture = create_texture_from_buffer (tile->buffer);
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}
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static void
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draw_frame (TestState *state)
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{
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guint i;
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/* Paint the textures */
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for (i = 0; i < NB_TILES; i++)
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{
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cogl_set_source_texture (state->tiles[i].texture);
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cogl_rectangle (state->tiles[i].x,
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state->tiles[i].y,
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state->tiles[i].x + TILE_SIZE,
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state->tiles[i].y + TILE_SIZE);
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}
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}
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static gboolean
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validate_tile (TestState *state,
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TestTile *tile)
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{
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int x, y;
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guchar *pixels, *p;
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p = pixels = clutter_stage_read_pixels (CLUTTER_STAGE (state->stage),
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tile->x,
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tile->y,
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TILE_SIZE,
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TILE_SIZE);
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/* Check whether the center of each division is the right color */
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for (y = 0; y < TILE_SIZE; y++)
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for (x = 0; x < TILE_SIZE; x++)
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{
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if (p[0] != tile->color.red ||
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p[1] != tile->color.green ||
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p[2] != tile->color.blue ||
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p[3] != tile->color.alpha)
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{
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return FALSE;
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}
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p += 4;
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}
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return TRUE;
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}
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static void
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validate_result (TestState *state)
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{
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guint i;
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for (i = 0; i < NB_TILES; i++)
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g_assert (validate_tile (state, &state->tiles[i]));
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/* comment this if you want to see what's being drawn */
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#if 1
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clutter_main_quit ();
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#endif
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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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draw_frame (state);
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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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/* Need to increment frame first because clutter_stage_read_pixels
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fires a redraw */
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frame_num = state->frame++;
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if (frame_num == 2)
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validate_result (state);
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else if (frame_num < 2)
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g_usleep (G_USEC_PER_SEC);
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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_pixel_array (TestConformSimpleFixture *fixture,
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gconstpointer data)
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{
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TestState state;
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guint idle_source;
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guint paint_handler, i;
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static TestTile tiles[NB_TILES] =
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{
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/* color x y buffer tex */
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/* MAP */
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{ { 0xff, 0x00, 0x00, 0xff }, 0.0f, 0.0f, NULL, NULL },
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#if 0
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/* SET_REGION */
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{ { 0x7e, 0x7e, 0xff, 0x7e }, 0.0f, TILE_SIZE, NULL, NULL },
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#endif
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/* SET_DATA */
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{ { 0x7e, 0xff, 0x7e, 0xff }, 0.0f, TILE_SIZE, NULL, NULL }
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};
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state.frame = 0;
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state.stage = clutter_stage_get_default ();
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create_map_tile (&tiles[TILE_MAP]);
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#if 0
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create_set_region_tile (&tiles[TILE_SET_REGION]);
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#endif
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create_set_data_tile (&tiles[TILE_SET_DATA]);
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state.tiles = tiles;
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clutter_stage_set_color (CLUTTER_STAGE (state.stage), &stage_color);
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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, state.stage);
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paint_handler = g_signal_connect_after (state.stage, "paint",
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G_CALLBACK (on_paint), &state);
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clutter_actor_show_all (state.stage);
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clutter_main ();
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g_source_remove (idle_source);
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g_signal_handler_disconnect (state.stage, paint_handler);
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for (i = 0; i < NB_TILES; i++)
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{
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cogl_handle_unref (state.tiles[i].buffer);
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cogl_handle_unref (state.tiles[i].texture);
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}
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/* Remove all of the actors from the stage */
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clutter_container_foreach (CLUTTER_CONTAINER (state.stage),
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(ClutterCallback) clutter_actor_destroy,
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NULL);
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if (g_test_verbose ())
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g_print ("OK\n");
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}
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