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2008-06-06 Matthew Allum <mallum@openedhand.com>

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Bug #948 - Remove texture rectangle support

        * clutter/clutter-feature.c:
        * clutter/clutter-feature.h:
        * clutter/clutter-texture.c:
        * clutter/cogl/gl/cogl.c:
* clutter/glx/clutter-glx-texture-pixmap.c:
        Remove support for GL_TEXTURE_RECTANGLE_ARB (now using just regular
        2D textures, with optional npots extension). Simplifys code, + makes
        mipmap & shader support much more sane.
This commit is contained in:
Matthew Allum 2008-06-06 13:44:22 +00:00
parent 1ee75faaa4
commit 04845aa9c9
2 changed files with 9 additions and 73 deletions
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55
gl/cogl-texture.c
View File

@ -539,20 +539,7 @@ _cogl_texture_size_supported (GLenum gl_target,
int width,
int height)
{
if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
{
/* There is no proxy rectangle texture target so best we can
* do is to check against the safest value (although depending
* on our specific format and type the size could be supported
* when it seems it is not) */
GLint max_size = 0;
GE( glGetIntegerv(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB, &max_size) );
return (max_size && width <= max_size && height <= max_size);
}
else if (gl_target == GL_TEXTURE_2D)
if (gl_target == GL_TEXTURE_2D)
{
/* Proxy texture allows for a quick check for supported size */
@ -601,13 +588,6 @@ _cogl_texture_slices_create (CoglTexture *tex)
tex->gl_target = GL_TEXTURE_2D;
slices_for_size = _cogl_rect_slices_for_size;
}
else if (cogl_features_available (COGL_FEATURE_TEXTURE_RECTANGLE))
{
max_width = tex->bitmap.width;
max_height = tex->bitmap.height;
tex->gl_target = GL_TEXTURE_RECTANGLE_ARB;
slices_for_size = _cogl_rect_slices_for_size;
}
else
{
max_width = cogl_util_next_p2 (tex->bitmap.width);
@ -1230,8 +1210,7 @@ cogl_texture_new_from_foreign (GLuint gl_handle,
CoglTexSliceSpan y_span;
/* Allow 2-dimensional textures only */
if (gl_target != GL_TEXTURE_2D &&
gl_target != GL_TEXTURE_RECTANGLE_ARB)
if (gl_target != GL_TEXTURE_2D)
return COGL_INVALID_HANDLE;
/* Make sure it is a valid GL texture object */
@ -1747,9 +1726,6 @@ _cogl_texture_quad_sw (CoglTexture *tex,
/* Prepare GL state */
gulong enable_flags = 0;
if (tex->gl_target == GL_TEXTURE_RECTANGLE_ARB)
enable_flags |= COGL_ENABLE_TEXTURE_RECT;
else
enable_flags |= COGL_ENABLE_TEXTURE_2D;
if (ctx->color_alpha < 255
@ -1806,11 +1782,8 @@ _cogl_texture_quad_sw (CoglTexture *tex,
/* Normalize texture coordinates to current slice
(rectangle texture targets take denormalized) */
if (tex->gl_target != GL_TEXTURE_RECTANGLE_ARB)
{
slice_ty1 /= iter_y.span->size;
slice_ty2 /= iter_y.span->size;
}
/* Iterate until whole quad width covered */
@ -1835,11 +1808,8 @@ _cogl_texture_quad_sw (CoglTexture *tex,
/* Normalize texture coordinates to current slice
(rectangle texture targets take denormalized) */
if (tex->gl_target != GL_TEXTURE_RECTANGLE_ARB)
{
slice_tx1 /= iter_x.span->size;
slice_tx2 /= iter_x.span->size;
}
#if COGL_DEBUG
printf("~~~~~ slice (%d,%d)\n", iter_x.index, iter_y.index);
@ -1908,9 +1878,6 @@ _cogl_texture_quad_hw (CoglTexture *tex,
/* Prepare GL state */
gulong enable_flags = 0;
if (tex->gl_target == GL_TEXTURE_RECTANGLE_ARB)
enable_flags |= COGL_ENABLE_TEXTURE_RECT;
else
enable_flags |= COGL_ENABLE_TEXTURE_2D;
if (ctx->color_alpha < 255
@ -1934,15 +1901,6 @@ _cogl_texture_quad_hw (CoglTexture *tex,
ty1 = ty1 * (y_span->size - y_span->waste) / y_span->size;
ty2 = ty2 * (y_span->size - y_span->waste) / y_span->size;
/* Denormalize texture coordinates for rectangle textures */
if (tex->gl_target == GL_TEXTURE_RECTANGLE_ARB)
{
tx1 *= x_span->size;
tx2 *= x_span->size;
ty1 *= y_span->size;
ty2 *= y_span->size;
}
#define CFX_F(x) CLUTTER_FIXED_TO_FLOAT(x)
/* Draw textured quad */
@ -2088,9 +2046,6 @@ cogl_texture_polygon (CoglHandle handle,
tex = _cogl_texture_pointer_from_handle (handle);
/* Prepare GL state */
if (tex->gl_target == GL_TEXTURE_RECTANGLE_ARB)
cogl_enable (COGL_ENABLE_TEXTURE_RECT | COGL_ENABLE_BLEND);
else
cogl_enable (COGL_ENABLE_TEXTURE_2D | COGL_ENABLE_BLEND);
/* Temporarily change the wrapping mode on all of the slices to use
@ -2140,12 +2095,6 @@ cogl_texture_polygon (CoglHandle handle,
- y_span->start / (GLfloat) tex->bitmap.height)
* tex->bitmap.height / y_span->size;
if (tex->gl_target == GL_TEXTURE_RECTANGLE_ARB)
{
tx *= x_span->size;
ty *= y_span->size;
}
glTexCoord2f (tx, ty);
glVertex3f (CLUTTER_FIXED_TO_FLOAT (vertices[vnum].x),

13
gl/cogl.c
View File

@ -323,11 +323,6 @@ cogl_enable (gulong flags)
COGL_ENABLE_TEXCOORD_ARRAY,
GL_TEXTURE_COORD_ARRAY);
#ifdef GL_TEXTURE_RECTANGLE_ARB
cogl_toggle_flag (ctx, flags,
COGL_ENABLE_TEXTURE_RECT,
GL_TEXTURE_RECTANGLE_ARB);
#endif
}
gulong
@ -673,14 +668,6 @@ _cogl_features_init ()
gl_extensions = (const gchar*) glGetString (GL_EXTENSIONS);
#if defined(GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB) && defined(GL_TEXTURE_RECTANGLE_ARB)
if (cogl_check_extension ("GL_ARB_texture_rectangle", gl_extensions) ||
cogl_check_extension ("GL_EXT_texture_rectangle", gl_extensions))
{
flags |= COGL_FEATURE_TEXTURE_RECTANGLE;
}
#endif
if (cogl_check_extension ("GL_ARB_texture_non_power_of_two", gl_extensions))
{
flags |= COGL_FEATURE_TEXTURE_NPOT;