source/render/rendertarget.h

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