From 8ff85615b38904523d769450f2845ab6f75b633b Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Mon, 24 Nov 2008 12:27:48 +0000 Subject: [PATCH] * clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon): Fix the equation for calculating texture coordinates when using sliced textures. This became broken in revision 3520. --- ChangeLog | 6 ++++++ clutter/cogl/gl/cogl-texture.c | 18 +++++++++++------- 2 files changed, 17 insertions(+), 7 deletions(-) diff --git a/ChangeLog b/ChangeLog index d95fe11..04ca566 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2008-11-24 Neil Roberts + + * clutter/cogl/gl/cogl-texture.c (cogl_texture_polygon): Fix the + equation for calculating texture coordinates when using sliced + textures. This became broken in revision 3520. + 2008-11-21 Neil Roberts Bug 1270 - Update to mingw-cross-compile.sh diff --git a/clutter/cogl/gl/cogl-texture.c b/clutter/cogl/gl/cogl-texture.c index b2970fc..1af5d88 100644 --- a/clutter/cogl/gl/cogl-texture.c +++ b/clutter/cogl/gl/cogl-texture.c @@ -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); -- 2.7.4