1 #include <msp/gl/extensions/arb_texture_float.h>
2 #include <msp/gl/extensions/ext_bgra.h>
3 #include <msp/strings/format.h>
4 #include "pixelformat.h"
11 void operator>>(const LexicalConverter &conv, PixelFormat &fmt)
13 if(conv.get()=="STENCIL_INDEX")
15 else if(conv.get()=="DEPTH_COMPONENT")
16 fmt = DEPTH_COMPONENT;
17 else if(conv.get()=="RGB")
19 else if(conv.get()=="RGBA")
21 else if(conv.get()=="BGR")
23 else if(conv.get()=="BGRA")
25 else if(conv.get()=="SRGB")
27 else if(conv.get()=="SRGB_ALPHA")
29 else if(conv.get()=="LUMINANCE")
31 else if(conv.get()=="LUMINANCE_ALPHA")
32 fmt = LUMINANCE_ALPHA;
33 else if(conv.get()=="SLUMINANCE")
35 else if(conv.get()=="SLUMINANCE_ALPHA")
36 fmt = SLUMINANCE_ALPHA;
38 throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
41 PixelFormat pixelformat_from_graphics(Graphics::PixelFormat pf)
45 case Graphics::LUMINANCE: return LUMINANCE;
46 case Graphics::LUMINANCE_ALPHA: return LUMINANCE_ALPHA;
47 case Graphics::RGB: return RGB;
49 case Graphics::RGBA: return RGBA;
50 case Graphics::BGR: return BGR;
52 case Graphics::BGRA: return BGRA;
53 default: throw invalid_argument("pixelformat_from_graphics");
57 PixelFormat storage_pixelformat_from_graphics(Graphics::PixelFormat pf, bool srgb)
64 case Graphics::BGRX: result = RGB; break;
65 case Graphics::BGRA: result = RGBA; break;
66 default: result = pixelformat_from_graphics(pf);
70 return get_srgb_pixelformat(result);
75 PixelFormat get_base_pixelformat(PixelFormat pf)
83 case SRGB8: return RGB;
88 case SRGB8_ALPHA8: return RGBA;
93 case SLUMINANCE8: return LUMINANCE;
94 case LUMINANCE_ALPHA8:
95 case LUMINANCE_ALPHA16F:
96 case LUMINANCE_ALPHA32F:
97 case SLUMINANCE_ALPHA:
98 case SLUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
99 case DEPTH_COMPONENT16:
100 case DEPTH_COMPONENT24:
101 case DEPTH_COMPONENT32: return DEPTH_COMPONENT;
106 PixelFormat get_srgb_pixelformat(PixelFormat pf)
110 case RGB: return SRGB;
111 case RGBA: return SRGB_ALPHA;
112 case RGB8: return SRGB8;
113 case RGBA8: return SRGB8_ALPHA8;
114 case LUMINANCE: return SLUMINANCE;
115 case LUMINANCE8: return SLUMINANCE8;
116 case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
117 case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
122 unsigned get_component_count(PixelFormat pf)
124 switch(get_base_pixelformat(pf))
127 case DEPTH_COMPONENT:
131 case LUMINANCE_ALPHA:
132 case SLUMINANCE_ALPHA:
141 throw invalid_argument("get_component_count");
145 unsigned get_component_size(PixelFormat pf)
152 case LUMINANCE_ALPHA16F:
153 case DEPTH_COMPONENT16:
155 case DEPTH_COMPONENT24:
160 case LUMINANCE_ALPHA32F:
161 case DEPTH_COMPONENT32:
168 unsigned get_pixel_size(PixelFormat pf)
170 return get_component_count(pf)*get_component_size(pf);
173 void require_pixelformat(PixelFormat pf)
183 case LUMINANCE_ALPHA16F:
184 case LUMINANCE_ALPHA32F:
185 { static Require _req(ARB_texture_float); }
193 case SLUMINANCE_ALPHA:
194 case SLUMINANCE8_ALPHA8:
195 { static Require _req(EXT_texture_sRGB); }
199 { static Require _req(EXT_bgra); }
201 case DEPTH_COMPONENT:
202 case DEPTH_COMPONENT16:
203 case DEPTH_COMPONENT24:
204 case DEPTH_COMPONENT32:
205 { static Require _req(ARB_depth_texture); }