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* clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon): Fix the

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equation for calculating texture coordinates when using sliced
	textures. This became broken in revision 3520.
This commit is contained in:
Neil Roberts 2008-11-24 12:27:48 +00:00
parent d741f67cfc
commit 50b6ecc56d
1 changed files with 11 additions and 7 deletions
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18
gl/cogl-texture.c
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@ -2224,7 +2224,7 @@ cogl_texture_polygon (CoglHandle handle,
gboolean use_color)
{
CoglTexture *tex;
int i, x, y;
int i, x, y, tex_num;
GLuint gl_handle;
CoglTexSliceSpan *y_span, *x_span;
gulong enable_flags;
@ -2314,7 +2314,7 @@ cogl_texture_polygon (CoglHandle handle,
GL_CLAMP_TO_BORDER) );
}
i = 0;
tex_num = 0;
/* Render all of the slices with the full geometry but use a
transparent border color so that any part of the texture not
@ -2327,7 +2327,7 @@ cogl_texture_polygon (CoglHandle handle,
{
x_span = &g_array_index (tex->slice_x_spans, CoglTexSliceSpan, x);
gl_handle = g_array_index (tex->slice_gl_handles, GLuint, i++);
gl_handle = g_array_index (tex->slice_gl_handles, GLuint, tex_num++);
/* Convert the vertices into an array of GLfloats ready to pass to
OpenGL */
@ -2338,10 +2338,14 @@ cogl_texture_polygon (CoglHandle handle,
p->v[0] = CFX_F(vertices[i].x);
p->v[1] = CFX_F(vertices[i].y);
p->v[2] = CFX_F(vertices[i].z);
p->t[0] = CFX_F(vertices[i].tx
* (x_span->size - x_span->waste) / x_span->size);
p->t[1] = CFX_F(vertices[i].ty
* (y_span->size - y_span->waste) / y_span->size);
p->t[0] = CFX_F((vertices[i].tx
- (COGL_FIXED_FROM_INT (x_span->start)
/ tex->bitmap.width))
* tex->bitmap.width / x_span->size);
p->t[1] = CFX_F((vertices[i].ty
- (COGL_FIXED_FROM_INT (y_span->start)
/ tex->bitmap.height))
* tex->bitmap.height / y_span->size);
p->c[0] = cogl_color_get_red_byte(&vertices[i].color);
p->c[1] = cogl_color_get_green_byte(&vertices[i].color);
p->c[2] = cogl_color_get_blue_byte(&vertices[i].color);