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()=="RED")
19 else if(conv.get()=="RG")
21 else if(conv.get()=="RGB")
23 else if(conv.get()=="RGBA")
25 else if(conv.get()=="BGR")
27 else if(conv.get()=="BGRA")
29 else if(conv.get()=="SRGB")
31 else if(conv.get()=="SRGB_ALPHA")
33 else if(conv.get()=="LUMINANCE")
35 else if(conv.get()=="LUMINANCE_ALPHA")
36 fmt = LUMINANCE_ALPHA;
37 else if(conv.get()=="SLUMINANCE")
39 else if(conv.get()=="SLUMINANCE_ALPHA")
40 fmt = SLUMINANCE_ALPHA;
42 throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
45 PixelFormat pixelformat_from_graphics(Graphics::PixelFormat pf)
49 case Graphics::LUMINANCE: return LUMINANCE;
50 case Graphics::LUMINANCE_ALPHA: return LUMINANCE_ALPHA;
51 case Graphics::RGB: return RGB;
53 case Graphics::RGBA: return RGBA;
54 case Graphics::BGR: return BGR;
56 case Graphics::BGRA: return BGRA;
57 default: throw invalid_argument("pixelformat_from_graphics");
61 PixelFormat storage_pixelformat_from_graphics(Graphics::PixelFormat pf, bool srgb)
68 case Graphics::BGRX: result = RGB; break;
69 case Graphics::BGRA: result = RGBA; break;
70 default: result = pixelformat_from_graphics(pf);
74 return get_srgb_pixelformat(result);
79 PixelFormat get_base_pixelformat(PixelFormat pf)
85 case R32F: return RED;
88 case RG32F: return RG;
93 case SRGB8: return RGB;
98 case SRGB8_ALPHA8: return RGBA;
101 case SLUMINANCE8: return LUMINANCE;
102 case LUMINANCE_ALPHA8:
103 case SLUMINANCE_ALPHA:
104 case SLUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
105 case DEPTH_COMPONENT16:
106 case DEPTH_COMPONENT24:
107 case DEPTH_COMPONENT32: return DEPTH_COMPONENT;
112 PixelFormat get_sized_pixelformat(PixelFormat pf)
118 case RGB: return RGB8;
119 case RGBA: return RGBA8;
120 case SRGB: return SRGB8;
121 case SRGB_ALPHA: return SRGB8_ALPHA8;
122 case LUMINANCE: return LUMINANCE8;
123 case SLUMINANCE: return SLUMINANCE8;
124 case LUMINANCE_ALPHA: return LUMINANCE8_ALPHA8;
125 case SLUMINANCE_ALPHA: return SLUMINANCE8_ALPHA8;
126 case DEPTH_COMPONENT:
127 if(get_gl_api()==OPENGL_ES2)
128 return DEPTH_COMPONENT16;
130 return DEPTH_COMPONENT32;
135 PixelFormat get_srgb_pixelformat(PixelFormat pf)
139 case RGB: return SRGB;
140 case RGBA: return SRGB_ALPHA;
141 case RGB8: return SRGB8;
142 case RGBA8: return SRGB8_ALPHA8;
143 case LUMINANCE: return SLUMINANCE;
144 case LUMINANCE8: return SLUMINANCE8;
145 case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
146 case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
151 unsigned get_component_count(PixelFormat pf)
153 switch(get_base_pixelformat(pf))
156 case DEPTH_COMPONENT:
162 case LUMINANCE_ALPHA:
163 case SLUMINANCE_ALPHA:
172 throw invalid_argument("get_component_count");
176 unsigned get_component_size(PixelFormat pf)
184 case DEPTH_COMPONENT16:
186 case DEPTH_COMPONENT24:
192 case DEPTH_COMPONENT32:
199 unsigned get_pixel_size(PixelFormat pf)
201 return get_component_count(pf)*get_component_size(pf);
204 void require_pixelformat(PixelFormat pf)
212 { static Require _req(ARB_texture_rg); }
218 { static Require _req(ARB_texture_rg); }
219 { static Require _req(ARB_texture_float); }
225 { static Require _req(ARB_texture_float); }
233 case SLUMINANCE_ALPHA:
234 case SLUMINANCE8_ALPHA8:
235 { static Require _req(EXT_texture_sRGB); }
239 { static Require _req(EXT_bgra); }
241 case DEPTH_COMPONENT:
242 case DEPTH_COMPONENT16:
243 case DEPTH_COMPONENT24:
244 case DEPTH_COMPONENT32:
245 { static Require _req(ARB_depth_texture); }