void operator>>(const LexicalConverter &conv, PixelFormat &fmt)
{
- if(conv.get()=="COLOR_INDEX")
- fmt = COLOR_INDEX;
- else if(conv.get()=="STENCIL_INDEX")
+ if(conv.get()=="STENCIL_INDEX")
fmt = STENCIL_INDEX;
else if(conv.get()=="DEPTH_COMPONENT")
fmt = DEPTH_COMPONENT;
else if(conv.get()=="RED")
fmt = RED;
- else if(conv.get()=="GREEN")
- fmt = GREEN;
- else if(conv.get()=="BLUE")
- fmt = BLUE;
- else if(conv.get()=="ALPHA")
- fmt = ALPHA;
+ else if(conv.get()=="RG")
+ fmt = RG;
else if(conv.get()=="RGB")
fmt = RGB;
else if(conv.get()=="RGBA")
fmt = BGR;
else if(conv.get()=="BGRA")
fmt = BGRA;
+ else if(conv.get()=="SRGB")
+ fmt = SRGB;
+ else if(conv.get()=="SRGB_ALPHA")
+ fmt = SRGB_ALPHA;
else if(conv.get()=="LUMINANCE")
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()));
}
{
switch(pf)
{
- case Graphics::COLOR_INDEX: return COLOR_INDEX;
case Graphics::LUMINANCE: return LUMINANCE;
case Graphics::LUMINANCE_ALPHA: return LUMINANCE_ALPHA;
case Graphics::RGB: return RGB;
}
}
-PixelFormat storage_pixelformat_from_graphics(Graphics::PixelFormat pf)
+PixelFormat storage_pixelformat_from_graphics(Graphics::PixelFormat pf, bool srgb)
{
+ PixelFormat result;
switch(pf)
{
case Graphics::RGBX:
case Graphics::BGR:
- case Graphics::BGRX: return RGB;
- case Graphics::BGRA: return RGBA;
- default: return pixelformat_from_graphics(pf);
+ case Graphics::BGRX: result = RGB; break;
+ case Graphics::BGRA: result = RGBA; break;
+ default: result = pixelformat_from_graphics(pf);
}
+
+ if(srgb)
+ return get_srgb_pixelformat(result);
+ else
+ return result;
}
PixelFormat get_base_pixelformat(PixelFormat pf)
+{
+ PixelFormat unsized = get_unsized_pixelformat(pf);
+ switch(unsized)
+ {
+ case SRGB: return RGB;
+ case SRGB_ALPHA: return RGBA;
+ case SLUMINANCE: return LUMINANCE;
+ case SLUMINANCE_ALPHA: return LUMINANCE_ALPHA;
+ default: return unsized;
+ }
+}
+
+PixelFormat get_unsized_pixelformat(PixelFormat pf)
{
switch(pf)
{
+ case R8:
+ case R16F:
+ case R32F: return RED;
+ case RG8:
+ case RG16F:
+ case RG32F: return RG;
case RGB8:
case RGB16F:
case RGB32F: return RGB;
+ case SRGB8: return SRGB;
case RGBA8:
case RGBA16F:
case RGBA32F: return RGBA;
- case LUMINANCE8:
- case LUMINANCE16F:
- case LUMINANCE32F: return LUMINANCE;
- case LUMINANCE_ALPHA8:
- case LUMINANCE_ALPHA16F:
- case LUMINANCE_ALPHA32F: return LUMINANCE_ALPHA;
+ case SRGB8_ALPHA8: return SRGB_ALPHA;
+ case LUMINANCE8: return LUMINANCE;
+ case SLUMINANCE8: return SLUMINANCE;
+ case LUMINANCE_ALPHA8: return LUMINANCE_ALPHA;
+ case SLUMINANCE8_ALPHA8: return SLUMINANCE_ALPHA;
+ case DEPTH_COMPONENT16:
+ case DEPTH_COMPONENT24:
+ case DEPTH_COMPONENT32:
+ case DEPTH_COMPONENT32F: return DEPTH_COMPONENT;
+ default: return pf;
+ }
+}
+
+PixelFormat get_sized_pixelformat(PixelFormat pf, unsigned size)
+{
+ if(!size || size>4)
+ throw invalid_argument("get_sized_pixelformat");
+
+ pf = get_unsized_pixelformat(pf);
+
+ switch(size)
+ {
+ 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;
+ case LUMINANCE: return LUMINANCE8;
+ case SLUMINANCE: return SLUMINANCE8;
+ case LUMINANCE_ALPHA: return LUMINANCE8_ALPHA8;
+ case SLUMINANCE_ALPHA: return SLUMINANCE8_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
+ 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)
+{
+ switch(pf)
+ {
+ case RGB: return SRGB;
+ 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;
}
}
{
switch(get_base_pixelformat(pf))
{
- case COLOR_INDEX:
case STENCIL_INDEX:
case DEPTH_COMPONENT:
case RED:
- case GREEN:
- case BLUE:
case LUMINANCE:
+ case SLUMINANCE:
return 1;
+ case RG:
case LUMINANCE_ALPHA:
+ case SLUMINANCE_ALPHA:
return 2;
case RGB:
case BGR:
case BGRA:
return 4;
default:
- throw invalid_argument("get_pixelformat_component_count");
+ throw invalid_argument("get_component_count");
}
}
+unsigned get_component_size(PixelFormat pf)
+{
+ switch(pf)
+ {
+ case R8:
+ case RG8:
+ case RGB8:
+ case RGBA8:
+ case SRGB8:
+ case SRGB8_ALPHA8:
+ case LUMINANCE8:
+ case LUMINANCE8_ALPHA8:
+ case SLUMINANCE8:
+ case SLUMINANCE8_ALPHA8:
+ return 1;
+ case R16F:
+ case RG16F:
+ case RGB16F:
+ case RGBA16F:
+ case DEPTH_COMPONENT16:
+ return 2;
+ case DEPTH_COMPONENT24:
+ return 3;
+ case R32F:
+ case RG32F:
+ case RGB32F:
+ case RGBA32F:
+ case DEPTH_COMPONENT32:
+ case DEPTH_COMPONENT32F:
+ return 4;
+ default:
+ return 0;
+ }
+}
+
+unsigned get_pixel_size(PixelFormat pf)
+{
+ return get_component_count(pf)*max(get_component_size(pf), 1U);
+}
+
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 RG8:
+ { static Require _req(ARB_texture_rg); }
+ break;
+ case R16F:
+ case R32F:
+ case RG16F:
+ case RG32F:
+ { static Require _req(ARB_texture_rg); }
+ { static Require _req(ARB_texture_float); }
+ break;
case RGB16F:
case RGB32F:
case RGBA16F:
case RGBA32F:
- case LUMINANCE16F:
- case LUMINANCE32F:
- case LUMINANCE_ALPHA16F:
- case LUMINANCE_ALPHA32F:
{ static Require _req(ARB_texture_float); }
break;
+ case SRGB:
+ 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:
case BGRA:
{ 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;
}
projects / libs / gl.git / blobdiff