+++ /dev/null
-#include <msp/gl/extensions/arb_texture_float.h>
-#include <msp/io/print.h>
-#include <msp/strings/format.h>
-#include "pixelformat.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-void operator>>(const LexicalConverter &conv, PixelComponents &comp)
-{
- 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
- throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
-}
-
-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());
- }
-}
-
-PixelComponents pixelformat_from_graphics(Graphics::PixelFormat pf)
-{
- switch(pf)
- {
- 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:
- case SRGB8: return RGB;
- case RGBA8:
- case RGBA16F:
- 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