source/rendertarget.h

   1 #ifndef RENDERTARGET_H_
   2 #define RENDERTARGET_H_
   3
   4 #include "framebuffer.h"
   5 #include "texture2d.h"
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 enum RenderOutput
  11 {
  12         RENDER_COLOR = 0|3,
  13         RENDER_DEPTH = 192|12
  14 };
  15
  16 class RenderTargetFormat
  17 {
  18 private:
  19         enum { MAX_OUTPUTS = 7 };
  20
  21         unsigned char count;
  22         unsigned char outputs[MAX_OUTPUTS];
  23
  24 public:
  25         RenderTargetFormat();
  26         RenderTargetFormat(RenderOutput);
  27
  28         RenderTargetFormat operator,(RenderOutput) const;
  29         RenderTargetFormat operator,(PixelFormat) const;
  30
  31         bool empty() const { return !count; }
  32         const unsigned char *begin() const { return outputs; }
  33         const unsigned char *end() const { return outputs+count; }
  34         int index(RenderOutput) const;
  35 };
  36
  37 inline RenderTargetFormat operator,(RenderOutput o1, RenderOutput o2)
  38 { return (RenderTargetFormat(o1), o2); }
  39
  40 inline RenderTargetFormat operator,(RenderOutput o, PixelFormat f)
  41 { return (RenderTargetFormat(o), f); }
  42
  43 inline unsigned get_output_type(unsigned char o)
  44 { return o>>4; }
  45
  46 PixelFormat get_output_pixelformat(unsigned char);
  47
  48
  49 class RenderTarget
  50 {
  51 private:
  52         union TargetBuffer
  53         {
  54                 Texture2D *texture;
  55                 Renderbuffer *buffer;
  56         };
  57
  58         unsigned width;
  59         unsigned height;
  60         unsigned samples;
  61         RenderTargetFormat format;
  62         std::vector<TargetBuffer> buffers;
  63         Framebuffer fbo;
  64
  65 public:
  66         RenderTarget(unsigned, unsigned, RenderOutput);
  67         RenderTarget(unsigned, unsigned, const RenderTargetFormat & = (RENDER_COLOR, RENDER_DEPTH));
  68         RenderTarget(unsigned, unsigned, unsigned, const RenderTargetFormat & = (RENDER_COLOR, RENDER_DEPTH));
  69 private:
  70         RenderTarget(const RenderTarget &);
  71         RenderTarget &operator=(const RenderTarget &);
  72         void init(unsigned, unsigned, unsigned, const RenderTargetFormat &);
  73 public:
  74         ~RenderTarget();
  75
  76         unsigned get_width() const { return width; }
  77         unsigned get_height() const { return height; }
  78         const RenderTargetFormat &get_format() const { return format; }
  79         Framebuffer &get_framebuffer() { return fbo; }
  80         void set_texture_filter(TextureFilter);
  81         const Texture2D &get_target_texture(unsigned) const;
  82         const Texture2D &get_target_texture(RenderOutput) const;
  83         void blit_from(const RenderTarget &);
  84 };
  85
  86 } // namespace GL
  87 } // namespace Msp
  88
  89 #endif