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_sized_pixelformat(PixelFormat pf)
110 case RGB: return RGB8;
111 case RGBA: return RGBA8;
112 case SRGB: return SRGB8;
113 case SRGB_ALPHA: return SRGB8_ALPHA8;
114 case LUMINANCE: return LUMINANCE8;
115 case SLUMINANCE: return SLUMINANCE8;
116 case LUMINANCE_ALPHA: return LUMINANCE8_ALPHA8;
117 case SLUMINANCE_ALPHA: return SLUMINANCE8_ALPHA8;
118 case DEPTH_COMPONENT:
119 if(get_gl_api()==OPENGL_ES2)
120 return DEPTH_COMPONENT16;
122 return DEPTH_COMPONENT32;
127 PixelFormat get_srgb_pixelformat(PixelFormat pf)
131 case RGB: return SRGB;
132 case RGBA: return SRGB_ALPHA;
133 case RGB8: return SRGB8;
134 case RGBA8: return SRGB8_ALPHA8;
135 case LUMINANCE: return SLUMINANCE;
136 case LUMINANCE8: return SLUMINANCE8;
137 case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
138 case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
143 unsigned get_component_count(PixelFormat pf)
145 switch(get_base_pixelformat(pf))
148 case DEPTH_COMPONENT:
152 case LUMINANCE_ALPHA:
153 case SLUMINANCE_ALPHA:
162 throw invalid_argument("get_component_count");
166 unsigned get_component_size(PixelFormat pf)
173 case LUMINANCE_ALPHA16F:
174 case DEPTH_COMPONENT16:
176 case DEPTH_COMPONENT24:
181 case LUMINANCE_ALPHA32F:
182 case DEPTH_COMPONENT32:
189 unsigned get_pixel_size(PixelFormat pf)
191 return get_component_count(pf)*get_component_size(pf);
194 void require_pixelformat(PixelFormat pf)
204 case LUMINANCE_ALPHA16F:
205 case LUMINANCE_ALPHA32F:
206 { static Require _req(ARB_texture_float); }
214 case SLUMINANCE_ALPHA:
215 case SLUMINANCE8_ALPHA8:
216 { static Require _req(EXT_texture_sRGB); }
220 { static Require _req(EXT_bgra); }
222 case DEPTH_COMPONENT:
223 case DEPTH_COMPONENT16:
224 case DEPTH_COMPONENT24:
225 case DEPTH_COMPONENT32:
226 { static Require _req(ARB_depth_texture); }