+#include <msp/gl/extensions/arb_texture_float.h>
+#include <msp/io/print.h>
#include <msp/strings/format.h>
#include "pixelformat.h"
namespace Msp {
namespace GL {
-istream &operator>>(istream &in, PixelFormat &fmt)
+void operator>>(const LexicalConverter &conv, PixelComponents &comp)
{
- string word;
-
- in>>word;
- if(word=="COLOR_INDEX")
- fmt = COLOR_INDEX;
- else if(word=="STENCIL_INDEX")
- fmt = STENCIL_INDEX;
- else if(word=="DEPTH_COMPONENT")
- fmt = DEPTH_COMPONENT;
- else if(word=="RED")
- fmt = RED;
- else if(word=="GREEN")
- fmt = GREEN;
- else if(word=="BLUE")
- fmt = BLUE;
- else if(word=="ALPHA")
- fmt = ALPHA;
- else if(word=="RGB")
- fmt = RGB;
- else if(word=="RGBA")
- fmt = RGBA;
- else if(word=="BGR")
- fmt = BGR;
- else if(word=="BGRA")
- fmt = BGRA;
- else if(word=="LUMINANCE")
- fmt = LUMINANCE;
- else if(word=="LUMINANCE_ALPHA")
- fmt = LUMINANCE_ALPHA;
+ if(conv.get()=="STENCIL_INDEX")
+ comp = STENCIL_INDEX;
+ else if(conv.get()=="DEPTH_COMPONENT")
+ comp = DEPTH_COMPONENT;
+ else if(conv.get()=="RED")
+ comp = RED;
+ else if(conv.get()=="RG")
+ comp = RG;
+ else if(conv.get()=="RGB")
+ comp = RGB;
+ else if(conv.get()=="RGBA")
+ comp = RGBA;
+ else if(conv.get()=="BGR")
+ comp = BGR;
+ else if(conv.get()=="BGRA")
+ comp = BGRA;
+ else if(conv.get()=="LUMINANCE")
+ comp = LUMINANCE;
+ else if(conv.get()=="LUMINANCE_ALPHA")
+ comp = LUMINANCE_ALPHA;
else
- in.setstate(ios_base::failbit);
+ throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
+}
- return in;
+void operator>>(const LexicalConverter &conv, PixelFormat &fmt)
+{
+ if(conv.get()=="R8")
+ fmt = R8;
+ else if(conv.get()=="R16F")
+ fmt = R16F;
+ else if(conv.get()=="R32F")
+ fmt = R32F;
+ else if(conv.get()=="RG8")
+ fmt = RG8;
+ else if(conv.get()=="RG16F")
+ fmt = RG16F;
+ else if(conv.get()=="RG32F")
+ fmt = RG32F;
+ else if(conv.get()=="RGB8")
+ fmt = RGB8;
+ else if(conv.get()=="RGB16F")
+ fmt = RGB16F;
+ else if(conv.get()=="RGB32F")
+ fmt = RGB32F;
+ else if(conv.get()=="RGBA8")
+ fmt = RGBA8;
+ else if(conv.get()=="RGBA16F")
+ fmt = RGBA16F;
+ else if(conv.get()=="RGBA32F")
+ fmt = RGBA32F;
+ else if(conv.get()=="SRGB8")
+ fmt = SRGB8;
+ else if(conv.get()=="SRGB8_ALPHA8")
+ fmt = SRGB8_ALPHA8;
+ else if(conv.get()=="BGR8")
+ fmt = BGR8;
+ else if(conv.get()=="BGRA8")
+ fmt = BGRA8;
+ else if(conv.get()=="LUMINANCE8")
+ fmt = LUMINANCE8;
+ else if(conv.get()=="LUMINANCE8_ALPHA8")
+ fmt = LUMINANCE8_ALPHA8;
+ else if(conv.get()=="DEPTH_COMPONENT16")
+ fmt = DEPTH_COMPONENT16;
+ else if(conv.get()=="DEPTH_COMPONENT24")
+ fmt = DEPTH_COMPONENT24;
+ else if(conv.get()=="DEPTH_COMPONENT32")
+ fmt = DEPTH_COMPONENT32;
+ else if(conv.get()=="DEPTH_COMPONENT32F")
+ fmt = DEPTH_COMPONENT32F;
+ else
+ {
+ PixelComponents comp;
+ conv >> comp;
+ fmt = make_pixelformat(comp, (comp==DEPTH_COMPONENT ? FLOAT : UNSIGNED_BYTE));
+ IO::print(IO::cerr, "Warning: deprecated conversion of '%s' to PixelFormat\n", conv.get());
+ }
}
-PixelFormat pixelformat_from_graphics(Graphics::PixelFormat pf)
+PixelComponents pixelformat_from_graphics(Graphics::PixelFormat pf)
{
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;
+ case Graphics::RGBX:
case Graphics::RGBA: return RGBA;
case Graphics::BGR: return BGR;
+ case Graphics::BGRX:
case Graphics::BGRA: return BGRA;
default: throw invalid_argument("pixelformat_from_graphics");
}
}
+PixelComponents storage_pixelformat_from_graphics(Graphics::PixelFormat pf)
+{
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+ switch(pf)
+ {
+ case Graphics::RGBX:
+ case Graphics::BGR:
+ case Graphics::BGRX: return RGB;
+ case Graphics::BGRA: return RGBA;
+ default: return pixelformat_from_graphics(pf);
+ }
+#pragma GCC diagnostic pop
+}
+
+PixelFormat pixelformat_from_image(const Graphics::Image &image)
+{
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+ PixelComponents comp = pixelformat_from_graphics(image.get_format());
+#pragma GCC diagnostic pop
+ return make_pixelformat(comp, UNSIGNED_BYTE);
+}
+
+PixelFormat make_pixelformat(PixelComponents comp, DataType type, bool srgb)
+{
+ if(srgb && type!=UNSIGNED_BYTE && comp!=RGB && comp!=RGBA && comp!=BGR && comp!=BGRA)
+ throw invalid_argument("make_pixelformat");
+
+ switch(comp)
+ {
+ case RED:
+ switch(type)
+ {
+ case UNSIGNED_BYTE: return R8;
+ case HALF_FLOAT: return R16F;
+ case FLOAT: return R32F;
+ default: throw invalid_argument("make_pixelformat");
+ }
+ case RG:
+ switch(type)
+ {
+ case UNSIGNED_BYTE: return RG8;
+ case HALF_FLOAT: return RG16F;
+ case FLOAT: return RG32F;
+ default: throw invalid_argument("make_pixelformat");
+ }
+ case RGB:
+ switch(type)
+ {
+ case UNSIGNED_BYTE: return (srgb ? SRGB8 : RGB8);
+ case HALF_FLOAT: return RGB16F;
+ case FLOAT: return RGB32F;
+ default: throw invalid_argument("make_pixelformat");
+ }
+ case RGBA:
+ switch(type)
+ {
+ case UNSIGNED_BYTE: return (srgb ? SRGB8_ALPHA8 : RGBA8);
+ case HALF_FLOAT: return RGBA16F;
+ case FLOAT: return RGBA32F;
+ default: throw invalid_argument("make_pixelformat");
+ }
+ case BGR:
+ if(type!=UNSIGNED_BYTE)
+ throw invalid_argument("make_pixelformat");
+ return (srgb ? BGR8 : SBGR8);
+ case BGRA:
+ if(type!=UNSIGNED_BYTE)
+ throw invalid_argument("make_pixelformat");
+ return (srgb ? BGRA8 : SBGR8_ALPHA8);
+ case LUMINANCE:
+ if(type!=UNSIGNED_BYTE)
+ throw invalid_argument("make_pixelformat");
+ return LUMINANCE8;
+ case LUMINANCE_ALPHA:
+ if(type!=UNSIGNED_BYTE)
+ throw invalid_argument("make_pixelformat");
+ return LUMINANCE8;
+ case STENCIL_INDEX:
+ if(type!=UNSIGNED_BYTE)
+ throw invalid_argument("make_pixelformat");
+ return STENCIL_INDEX8;
+ case DEPTH_COMPONENT:
+ switch(type)
+ {
+ case UNSIGNED_SHORT: return DEPTH_COMPONENT16;
+ case UNSIGNED_INT: return DEPTH_COMPONENT32;
+ case FLOAT: return DEPTH_COMPONENT32F;
+ default: throw invalid_argument("make_pixelformat");
+ }
+ default:
+ throw invalid_argument("make_pixelformat");
+ }
+}
+
PixelFormat get_base_pixelformat(PixelFormat pf)
{
switch(pf)
{
+ case SRGB8: return RGB8;
+ case SRGB8_ALPHA8: return RGBA8;
+ default: return pf;
+ }
+}
+
+PixelComponents get_components(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 RGB32F:
+ case SRGB8: return RGB;
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 RGBA32F:
+ case SRGB8_ALPHA8: return RGBA;
+ case BGR8:
+ case SBGR8: return BGR;
+ case BGRA8:
+ case SBGR8_ALPHA8: return BGRA;
+ case LUMINANCE8: return LUMINANCE;
+ case LUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
+ case STENCIL_INDEX8: return STENCIL_INDEX;
+ case DEPTH_COMPONENT16:
+ case DEPTH_COMPONENT24:
+ case DEPTH_COMPONENT32:
+ case DEPTH_COMPONENT32F: return DEPTH_COMPONENT;
+ default: throw invalid_argument("get_components");
+ }
+}
+
+PixelFormat get_default_sized_pixelformat(PixelComponents comp)
+{
+ DataType type = UNSIGNED_BYTE;
+ if(comp==DEPTH_COMPONENT)
+ {
+ if(get_gl_api()==OPENGL_ES2 && !ARB_depth_buffer_float)
+ type = UNSIGNED_SHORT;
+ else
+ type = FLOAT;
+ }
+ return make_pixelformat(comp, type);
+}
+
+PixelFormat get_srgb_pixelformat(PixelFormat pf)
+{
+ switch(pf)
+ {
+ case RGB8: return SRGB8;
+ case RGBA8: return SRGB8_ALPHA8;
default: return pf;
}
}
+unsigned get_component_count(PixelComponents comp)
+{
+ switch(comp)
+ {
+ case RED:
+ case LUMINANCE:
+ case DEPTH_COMPONENT:
+ case STENCIL_INDEX:
+ return 1;
+ case RG:
+ case LUMINANCE_ALPHA:
+ return 2;
+ case RGB:
+ case BGR:
+ return 3;
+ case RGBA:
+ case BGRA:
+ return 4;
+ default:
+ throw invalid_argument("get_component_count");
+ }
+}
+
+DataType get_component_type(PixelFormat pf)
+{
+ switch(pf)
+ {
+ case R8:
+ case RG8:
+ case RGB8:
+ case RGBA8:
+ case SRGB8:
+ case SRGB8_ALPHA8:
+ case BGR8:
+ case BGRA8:
+ case SBGR8:
+ case SBGR8_ALPHA8:
+ case LUMINANCE8:
+ case LUMINANCE8_ALPHA8:
+ return UNSIGNED_BYTE;
+ case R16F:
+ case RG16F:
+ case RGB16F:
+ case RGBA16F:
+ return HALF_FLOAT;
+ case DEPTH_COMPONENT16:
+ return UNSIGNED_SHORT;
+ case R32F:
+ case RG32F:
+ case RGB32F:
+ case RGBA32F:
+ case DEPTH_COMPONENT32:
+ return UNSIGNED_INT;
+ case DEPTH_COMPONENT32F:
+ return FLOAT;
+ case DEPTH_COMPONENT24:
+ // There's no DataType value with 24-bit size
+ default:
+ throw invalid_argument("get_component_type");
+ }
+}
+
+unsigned get_pixel_size(PixelFormat pf)
+{
+ return get_component_count(pf)*get_type_size(get_component_type(pf));
+}
+
+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 R8:
+ 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:
+ { static Require _req(ARB_texture_float); }
+ break;
+ case SRGB8:
+ case SRGB8_ALPHA8:
+ { static Require _req(EXT_texture_sRGB); }
+ 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_INDEX8:
+ { static Require _req(OES_texture_stencil8); }
+ break;
+ default:
+ throw invalid_argument("require_pixelformat");
+ }
+}
+
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff