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)
81 PixelFormat unsized = get_unsized_pixelformat(pf);
84 case SRGB: return RGB;
85 case SRGB_ALPHA: return RGBA;
86 case SLUMINANCE: return LUMINANCE;
87 case SLUMINANCE_ALPHA: return LUMINANCE_ALPHA;
88 default: return unsized;
92 PixelFormat get_unsized_pixelformat(PixelFormat pf)
98 case R32F: return RED;
101 case RG32F: return RG;
104 case RGB32F: return RGB;
105 case SRGB8: return SRGB;
108 case RGBA32F: return RGBA;
109 case SRGB8_ALPHA8: return SRGB_ALPHA;
110 case LUMINANCE8: return LUMINANCE;
111 case SLUMINANCE8: return SLUMINANCE;
112 case LUMINANCE_ALPHA8: return LUMINANCE_ALPHA;
113 case SLUMINANCE8_ALPHA8: return SLUMINANCE_ALPHA;
114 case DEPTH_COMPONENT16:
115 case DEPTH_COMPONENT24:
116 case DEPTH_COMPONENT32: return DEPTH_COMPONENT;
121 PixelFormat get_sized_pixelformat(PixelFormat pf, unsigned size)
124 throw invalid_argument("get_sized_pixelformat");
129 case SRGB_ALPHA: break;
130 case SRGB8: pf = SRGB; break;
131 case SRGB8_ALPHA8: pf = SRGB_ALPHA; break;
132 default: pf = get_base_pixelformat(pf);
142 case RGB: return RGB8;
143 case RGBA: return RGBA8;
144 case SRGB: return SRGB8;
145 case SRGB_ALPHA: return SRGB8_ALPHA8;
146 case LUMINANCE: return LUMINANCE8;
147 case SLUMINANCE: return SLUMINANCE8;
148 case LUMINANCE_ALPHA: return LUMINANCE8_ALPHA8;
149 case SLUMINANCE_ALPHA: return SLUMINANCE8_ALPHA8;
150 default: throw invalid_argument("get_sized_pixelformat");
155 case RED: return R16F;
156 case RG: return RG16F;
157 case RGB: return RGB16F;
158 case RGBA: return RGBA16F;
159 case DEPTH_COMPONENT: return DEPTH_COMPONENT16;
160 default: throw invalid_argument("get_sized_pixelformat");
163 if(pf==DEPTH_COMPONENT)
164 return DEPTH_COMPONENT24;
166 throw invalid_argument("get_sized_pixelformat");
170 case RED: return R32F;
171 case RG: return RG32F;
172 case RGB: return RGB32F;
173 case RGBA: return RGBA32F;
174 case DEPTH_COMPONENT: return DEPTH_COMPONENT32;
175 default: throw invalid_argument("get_sized_pixelformat");
178 throw invalid_argument("get_sized_pixelformat");
182 PixelFormat get_srgb_pixelformat(PixelFormat pf)
186 case RGB: return SRGB;
187 case RGBA: return SRGB_ALPHA;
188 case RGB8: return SRGB8;
189 case RGBA8: return SRGB8_ALPHA8;
190 case LUMINANCE: return SLUMINANCE;
191 case LUMINANCE8: return SLUMINANCE8;
192 case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
193 case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
198 unsigned get_component_count(PixelFormat pf)
200 switch(get_base_pixelformat(pf))
203 case DEPTH_COMPONENT:
209 case LUMINANCE_ALPHA:
210 case SLUMINANCE_ALPHA:
219 throw invalid_argument("get_component_count");
223 unsigned get_component_size(PixelFormat pf)
234 case LUMINANCE8_ALPHA8:
236 case SLUMINANCE8_ALPHA8:
242 case DEPTH_COMPONENT16:
244 case DEPTH_COMPONENT24:
250 case DEPTH_COMPONENT32:
257 unsigned get_pixel_size(PixelFormat pf)
259 return get_component_count(pf)*max(get_component_size(pf), 1U);
262 void require_pixelformat(PixelFormat pf)
270 { static Require _req(ARB_texture_rg); }
276 { static Require _req(ARB_texture_rg); }
277 { static Require _req(ARB_texture_float); }
283 { static Require _req(ARB_texture_float); }
291 case SLUMINANCE_ALPHA:
292 case SLUMINANCE8_ALPHA8:
293 { static Require _req(EXT_texture_sRGB); }
297 { static Require _req(EXT_bgra); }
299 case DEPTH_COMPONENT:
300 case DEPTH_COMPONENT16:
301 case DEPTH_COMPONENT24:
302 case DEPTH_COMPONENT32:
303 { static Require _req(ARB_depth_texture); }