fmt = LUMINANCE;
else if(conv.get()=="LUMINANCE_ALPHA")
fmt = LUMINANCE_ALPHA;
- else if(conv.get()=="SLUMINANCE")
- fmt = SLUMINANCE;
- else if(conv.get()=="SLUMINANCE_ALPHA")
- fmt = SLUMINANCE_ALPHA;
else
throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
}
}
PixelFormat get_base_pixelformat(PixelFormat pf)
+{
+ PixelFormat unsized = get_unsized_pixelformat(pf);
+ switch(unsized)
+ {
+ case SRGB: return RGB;
+ case SRGB_ALPHA: return RGBA;
+ default: return unsized;
+ }
+}
+
+PixelFormat get_unsized_pixelformat(PixelFormat pf)
{
switch(pf)
{
case RG32F: return RG;
case RGB8:
case RGB16F:
- case RGB32F:
- case SRGB:
- case SRGB8: return RGB;
+ case RGB32F: return RGB;
+ case SRGB8: return SRGB;
case RGBA8:
case RGBA16F:
- case RGBA32F:
- case SRGB_ALPHA:
- case SRGB8_ALPHA8: return RGBA;
- case LUMINANCE8:
- case SLUMINANCE:
- case SLUMINANCE8: return LUMINANCE;
- case LUMINANCE_ALPHA8:
- case SLUMINANCE_ALPHA:
- case SLUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
+ case RGBA32F: return RGBA;
+ case SRGB8_ALPHA8: return SRGB_ALPHA;
case DEPTH_COMPONENT16:
case DEPTH_COMPONENT24:
- case DEPTH_COMPONENT32: return DEPTH_COMPONENT;
+ case DEPTH_COMPONENT32:
+ case DEPTH_COMPONENT32F: return DEPTH_COMPONENT;
default: return pf;
}
}
-PixelFormat get_sized_pixelformat(PixelFormat pf)
+PixelFormat get_sized_pixelformat(PixelFormat pf, unsigned size)
{
- switch(pf)
+ if(!size || size>4)
+ throw invalid_argument("get_sized_pixelformat");
+
+ pf = get_unsized_pixelformat(pf);
+
+ switch(size)
{
- case RED: return R8;
- case RG: return RG8;
- case RGB: return RGB8;
- case RGBA: return RGBA8;
- case SRGB: return SRGB8;
- case SRGB_ALPHA: return SRGB8_ALPHA8;
- case LUMINANCE: return LUMINANCE8;
- case SLUMINANCE: return SLUMINANCE8;
- case LUMINANCE_ALPHA: return LUMINANCE8_ALPHA8;
- case SLUMINANCE_ALPHA: return SLUMINANCE8_ALPHA8;
- case DEPTH_COMPONENT:
- if(get_gl_api()==OPENGL_ES2)
- return DEPTH_COMPONENT16;
+ case 1:
+ switch(pf)
+ {
+ case RED: return R8;
+ case RG: return RG8;
+ case RGB: return RGB8;
+ case RGBA: return RGBA8;
+ case SRGB: return SRGB8;
+ case SRGB_ALPHA: return SRGB8_ALPHA8;
+ default: throw invalid_argument("get_sized_pixelformat");
+ }
+ case 2:
+ switch(pf)
+ {
+ case RED: return R16F;
+ case RG: return RG16F;
+ case RGB: return RGB16F;
+ case RGBA: return RGBA16F;
+ case DEPTH_COMPONENT: return DEPTH_COMPONENT16;
+ default: throw invalid_argument("get_sized_pixelformat");
+ }
+ case 3:
+ if(pf==DEPTH_COMPONENT)
+ return DEPTH_COMPONENT24;
else
- return DEPTH_COMPONENT32;
- default: return pf;
+ throw invalid_argument("get_sized_pixelformat");
+ case 4:
+ switch(pf)
+ {
+ case RED: return R32F;
+ case RG: return RG32F;
+ case RGB: return RGB32F;
+ case RGBA: return RGBA32F;
+ case DEPTH_COMPONENT: return ARB_depth_buffer_float ? DEPTH_COMPONENT32F : DEPTH_COMPONENT32;
+ default: throw invalid_argument("get_sized_pixelformat");
+ }
+ default:
+ throw invalid_argument("get_sized_pixelformat");
+ }
+}
+
+PixelFormat get_default_sized_pixelformat(PixelFormat pf)
+{
+ pf = get_unsized_pixelformat(pf);
+ unsigned size = 1;
+ if(pf==DEPTH_COMPONENT)
+ {
+ if(get_gl_api()==OPENGL_ES2 && !ARB_depth_buffer_float)
+ size = 2;
+ else
+ size = 4;
}
+ return get_sized_pixelformat(pf, size);
}
PixelFormat get_srgb_pixelformat(PixelFormat pf)
case RGBA: return SRGB_ALPHA;
case RGB8: return SRGB8;
case RGBA8: return SRGB8_ALPHA8;
- case LUMINANCE: return SLUMINANCE;
- case LUMINANCE8: return SLUMINANCE8;
- case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
- case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
default: return pf;
}
}
case DEPTH_COMPONENT:
case RED:
case LUMINANCE:
- case SLUMINANCE:
return 1;
case RG:
case LUMINANCE_ALPHA:
- case SLUMINANCE_ALPHA:
return 2;
case RGB:
case BGR:
case RGBA8:
case SRGB8:
case SRGB8_ALPHA8:
- case LUMINANCE8:
- case LUMINANCE8_ALPHA8:
- case SLUMINANCE8:
- case SLUMINANCE8_ALPHA8:
return 1;
case R16F:
case RG16F:
case RGB32F:
case RGBA32F:
case DEPTH_COMPONENT32:
+ case DEPTH_COMPONENT32F:
return 4;
default:
return 0;
void require_pixelformat(PixelFormat pf)
{
+ /* TODO These checks are only accurate for textures. On OpenGL ES some
+ formats are allowed for render buffers earlier than textures. In particular
+ it's possible to create a 16-bit depth renderbuffer on OpenGL ES 2.0 but
+ depth textures are only available with 3.0 or the OES_depth_texture
+ extension.*/
switch(pf)
{
+ case RGB8:
+ case RGBA8:
+ { static Require _req(OES_required_internalformat); }
+ break;
case RED:
case R8:
case RG:
case SRGB8:
case SRGB_ALPHA:
case SRGB8_ALPHA8:
- case SLUMINANCE:
- case SLUMINANCE8:
- case SLUMINANCE_ALPHA:
- case SLUMINANCE8_ALPHA8:
{ static Require _req(EXT_texture_sRGB); }
break;
case BGR:
{ static Require _req(EXT_bgra); }
break;
case DEPTH_COMPONENT:
+ { static Require _req(ARB_depth_texture); }
+ break;
case DEPTH_COMPONENT16:
case DEPTH_COMPONENT24:
case DEPTH_COMPONENT32:
{ static Require _req(ARB_depth_texture); }
+ { static Require _req(OES_required_internalformat); }
+ break;
+ case DEPTH_COMPONENT32F:
+ { static Require _req(ARB_depth_buffer_float); }
+ break;
+ case STENCIL_INDEX:
+ { static Require _req(OES_texture_stencil8); }
break;
default:
break;