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-rw-r--r--src/lmctexture.c220
1 files changed, 124 insertions, 96 deletions
diff --git a/src/lmctexture.c b/src/lmctexture.c
index cdc51669..40c75a10 100644
--- a/src/lmctexture.c
+++ b/src/lmctexture.c
@@ -1,6 +1,9 @@
+#include "config.h"
#include "lmctexture.h"
#include <string.h>
#include <GL/glu.h>
+#include "lmctypes.h"
+#include "screen.h"
typedef struct Tile Tile;
@@ -10,6 +13,8 @@ struct Tile
GLuint texture;
};
+#define WOBBLE_TILE_SIZE 16
+
struct _LmcTexture
{
/*< private >*/
@@ -18,25 +23,31 @@ struct _LmcTexture
LmcBits *bits;
GList *tiles;
+
+ gint grid_width;
+ gint grid_height;
+
+ LmcPoint *grid;
};
static int
get_max_texture_width (void)
{
- return 512;
+ return 128;
return GL_MAX_TEXTURE_SIZE;
}
static int
get_max_texture_height (void)
{
- return 512;
+ return 128;
return GL_MAX_TEXTURE_SIZE;
}
static void
dump_error (const char *context)
{
+#if 0
/* glGetError() is a server roundtrip */
GLenum err;
@@ -46,6 +57,7 @@ dump_error (const char *context)
const GLubyte *message = gluErrorString (err);
g_warning ("GL Error: %s [at %s]\n", message, context);
}
+#endif
}
static int
@@ -575,7 +587,7 @@ region_intersects_rect (GdkRegion *region, GdkRectangle *rect)
static void
print_gdk_region (const char *name, GdkRegion *region)
{
- GdkRectangle *rects;
+ GdkRectangle *rects;
int i, n_rects;
gdk_region_get_rectangles (region, &rects, &n_rects);
@@ -586,6 +598,97 @@ print_gdk_region (const char *name, GdkRegion *region)
g_free (rects);
}
+void
+lmc_texture_set_deformation (LmcTexture *texture,
+ LmcDeformationFunc func,
+ void *data)
+{
+ int x, y, deformed_x, deformed_y;
+ LmcPoint *grid;
+ LmcBits *bits;
+
+ if (func != NULL)
+ {
+ bits = texture->bits;
+
+ texture->grid_width =
+ (bits->width + WOBBLE_TILE_SIZE - 1) / WOBBLE_TILE_SIZE + 1;
+ texture->grid_height =
+ (bits->height + WOBBLE_TILE_SIZE - 1) / WOBBLE_TILE_SIZE + 1;
+ grid = g_new0 (LmcPoint, texture->grid_width * texture->grid_height);
+
+ for (y = 0; y < texture->grid_height; y++)
+ for (x = 0; x < texture->grid_width; x++)
+ {
+ func (x * WOBBLE_TILE_SIZE, y * WOBBLE_TILE_SIZE,
+ 0, 0, bits->width, bits->height,
+ &deformed_x, &deformed_y,
+ data);
+ grid[x + y * texture->grid_width].x = deformed_x;
+ grid[x + y * texture->grid_width].y = deformed_y;
+ }
+ }
+ else
+ grid = NULL;
+
+ if (texture->grid)
+ g_free (texture->grid);
+ texture->grid = grid;
+}
+
+static void
+draw_tile (MetaScreen *screen, Tile *tile, int x, int y, GdkRegion *clip)
+{
+ if ((!clip || region_intersects_rect (clip, &tile->geometry)))
+ {
+ GdkRectangle *rects;
+ int n_rects;
+ int translated_x = tile->geometry.x + x;
+ int translated_y = tile->geometry.y + y;
+ int i;
+ GdkRectangle dummy;
+
+ gdk_region_get_rectangles (clip, &rects, &n_rects);
+
+ glEnable (GL_SCISSOR_TEST);
+
+ glBindTexture (GL_TEXTURE_2D, tile->texture);
+
+ for (i = 0; i < n_rects; ++i)
+ {
+ if (gdk_rectangle_intersect (&(rects[i]), &tile->geometry, &dummy))
+ {
+ glScissor (rects[i].x + x,
+ screen->height - (y + rects[i].y + rects[i].height),
+ rects[i].width,
+ rects[i].height);
+ dump_error ("glbindtexture");
+
+ glBegin (GL_QUADS);
+
+ /* corner 1 */
+ glTexCoord2f (0.0, 0.0);
+ glVertex3i (translated_x, translated_y, 0);
+
+ /* corner 2 */
+ glTexCoord2f (1.0, 0.0);
+ glVertex3i (translated_x + tile->geometry.width, translated_y, 0);
+
+ /* corner 3 */
+ glTexCoord2f (1.0, 1.0);
+ glVertex3i (translated_x + tile->geometry.width, translated_y + tile->geometry.height, 0);
+
+ /* corner 4 */
+ glTexCoord2f (0.0, 1.0);
+ glVertex3i (translated_x, translated_y + tile->geometry.height, 0);
+
+ glEnd ();
+ dump_error ("glEnd");
+ }
+ }
+ }
+}
+
/**
* lmc_texture_draw:
* @texture:
@@ -597,7 +700,8 @@ print_gdk_region (const char *name, GdkRegion *region)
* Draw the texture, the clip is in window coordinates.
**/
void
-lmc_texture_draw (LmcTexture *texture,
+lmc_texture_draw (MetaScreen *screen,
+ LmcTexture *texture,
double alpha,
int x,
int y,
@@ -628,13 +732,15 @@ lmc_texture_draw (LmcTexture *texture,
g_print ("alpha %f\n", alpha);
#endif
+#if 0
set_clip_region (clip, x, y);
+#endif
#if 0
glColor4f (g_random_double(),
g_random_double(),
- g_random_double(), 0.3);
-
+ g_random_double(), 0.3);
+
glBegin (GL_QUADS);
glVertex3i (0, 0, 0);
@@ -647,100 +753,22 @@ lmc_texture_draw (LmcTexture *texture,
goto out;
#endif
- glColor4f (1.0, 1.0, 1.0, alpha);
+#if 0
+ glColor4f (g_random_double(),
+ g_random_double(),
+ g_random_double(), 1);
+
+#endif
+
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+
/* Emit quads */
for (list = texture->tiles; list != NULL; list = list->next)
{
Tile *tile = list->data;
- if ((!clip || region_intersects_rect (clip, &tile->geometry)))
- {
- int translated_x = tile->geometry.x + x;
- int translated_y = tile->geometry.y + y;
-
- glBindTexture (GL_TEXTURE_2D, tile->texture);
-#if 0
- g_print ("bound %p, %d\n", tile, tile->texture);
-#endif
-
- dump_error ("glbindtexture");
-
- glBegin (GL_QUADS);
-
- /* corner 1 */
-#if 0
- glColor4f (1.0, 0.2, 0.2, alpha);
-#endif
- glTexCoord2f (0.0, 0.0);
- glVertex3i (translated_x, translated_y, 0);
-
- /* corner 2 */
-#if 0
- glColor4f (0.0, 0.4, 0.2, alpha);
-#endif
- glTexCoord2f (1.0, 0.0);
- glVertex3i (translated_x + tile->geometry.width, translated_y, 0);
-
- /* corner 3 */
-#if 0
- glColor4f (0.0, 0.2, 0.8, alpha);
-#endif
- glTexCoord2f (1.0, 1.0);
- glVertex3i (translated_x + tile->geometry.width, translated_y + tile->geometry.height, 0);
-
- /* corner 4 */
-#if 0
- glColor4f (0.8, 0.8, 0.0, alpha);
-#endif
- glTexCoord2f (0.0, 1.0);
- glVertex3i (translated_x, translated_y + tile->geometry.height, 0);
-
- glEnd ();
- dump_error ("glEnd");
-
- unset_clip_region ();
-
- glColor4f (0.8, 0.0, 0.8, 0.2);
-
- glDisable (GL_TEXTURE_2D);
- glBegin (GL_QUADS);
- glVertex3i (translated_x, translated_y, 0);
- glVertex3i (translated_x + tile->geometry.width, translated_y, 0);
- glVertex3i (translated_x + tile->geometry.width,
- translated_y + tile->geometry.height, 0);
- glVertex3i (translated_x, translated_y + tile->geometry.height, 0);
- glEnd ();
- glEnable (GL_TEXTURE_2D);
-
- set_clip_region (clip, x, y);
- glColor4f (1.0, 1.0, 1.0, alpha);
- }
-
- else
- {
-#if 0
- int translated_x = tile->geometry.x + x;
- int translated_y = tile->geometry.y + y;
-
- print_gdk_region ("clip", clip);
-
- glColor4f (g_random_double(),
- g_random_double(),
- g_random_double(), 0.2);
-
- glDisable (GL_TEXTURE_2D);
- glBegin (GL_QUADS);
- glVertex3i (translated_x, translated_y, 0);
- glVertex3i (translated_x + tile->geometry.width, translated_y, 0);
- glVertex3i (translated_x + tile->geometry.width,
- translated_y + tile->geometry.height, 0);
- glVertex3i (translated_x, translated_y + tile->geometry.height, 0);
- glEnd ();
- glEnable (GL_TEXTURE_2D);
- glColor4f (1.0, 1.0, 1.0, alpha);
-#endif
- }
+ draw_tile (screen, tile, x, y, clip);
}
glDisable (GL_TEXTURE_2D);
@@ -769,9 +797,9 @@ lmc_texture_draw (LmcTexture *texture,
}
#endif
+#if 0
unset_clip_region ();
-
- out:
+#endif
glPopAttrib ();
}
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