resources_gl.hpp

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  modification, are permitted provided that the following conditions
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     or promote products derived from this software without specific
     prior written permission.
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  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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/* Contact ckubisch@nvidia.com (Christoph Kubisch) for feedback */

#pragma once

#include "resources.hpp"
#include <nv_helpers_gl/glresources.hpp>
#include <nv_helpers_gl/profilertimersgl.hpp>
#include "nvcommandlist.h"
#include <main.h>


namespace csfthreaded {  
  class ResourcesGL : public Resources 
  {
  public:

    typedef Token<GLuint,UniformAddressCommandNV,GL_UNIFORM_ADDRESS_COMMAND_NV,ResourcesGL>     tokenUbo;
    typedef Token<GLuint,AttributeAddressCommandNV,GL_ATTRIBUTE_ADDRESS_COMMAND_NV,ResourcesGL> tokenVbo;
    typedef Token<GLuint,ElementAddressCommandNV,GL_ELEMENT_ADDRESS_COMMAND_NV,ResourcesGL>     tokenIbo;
    typedef Token<GLuint,PolygonOffsetCommandNV,GL_POLYGON_OFFSET_COMMAND_NV,ResourcesGL>       tokenPolyOffset;
    typedef Token<GLuint,DrawElementsCommandNV,GL_DRAW_ELEMENTS_COMMAND_NV,ResourcesGL>         tokenDrawElems;

    enum NVTokenShaderStage {
      NVTOKEN_STAGE_VERTEX,
      NVTOKEN_STAGE_TESS_CONTROL,
      NVTOKEN_STAGE_TESS_EVALUATION,
      NVTOKEN_STAGE_GEOMETRY,
      NVTOKEN_STAGE_FRAGMENT,
      NVTOKEN_STAGES,
    };

    static const int GL_TOKENS = GL_FRONT_FACE_COMMAND_NV+1;
    static GLuint  s_token_headers[GL_TOKENS];
    static size_t  s_token_sizes[GL_TOKENS];
    static GLushort s_token_stages[NVTOKEN_STAGES];

    static inline void encodeAddress(GLuint* low, GLuint64 address){
      low[0] = GLuint(address & 0xFFFFFFFF);
      low[1] = GLuint(address >> 32);
    }


    static inline GLenum nvtokenHeaderCommand(GLuint header)
    {
      for (int i = 0; i < GL_TOKENS; i++){
        if (header == s_token_headers[i]) return i;
      }

      assert(0 && "can't find header");
      return -1;
    }

    static void         nvtokenGetStats( const void* NVP_RESTRICT stream, size_t streamSize, int stats[GL_TOKENS] );
    static const char*  nvtokenCommandToString(GLenum type);

#define UBOSTAGE_VERTEX     (ResourcesGL::s_token_stages[ResourcesGL::NVTOKEN_STAGE_VERTEX])
#define UBOSTAGE_FRAGMENT   (ResourcesGL::s_token_stages[ResourcesGL::NVTOKEN_STAGE_FRAGMENT])

    struct {
      nv_helpers_gl::ProgramManager::ProgramID
        draw_object_tris,
        draw_object_line,
        compute_animation;
    } programids;

    struct {
      Nulled<GLuint>
        draw_solid,
        draw_line,
        compute_animation;
    } programs;

    struct {
      Nulled<GLuint>
        scene;
    } fbos;

    struct {
      Nulled<GLuint>
        scene,
        anim,
        materials,
        matrices,
        matricesOrig;
    } buffers;

    struct {
      GLuint64
        scene,
        materials,
        matrices,
        matricesOrig;
    } addresses;

    struct {
      Nulled<GLuint>
        scene_color,
        scene_depthstencil;
    } textures;

    struct {
      GLuint
        draw_tris,
        draw_line_tris,
        draw_line;
    } stateobjects;

    struct Geometry {
      GLuint    vboGL;
      GLuint    iboGL;
      GLuint64  vboADDR;
      GLuint64  iboADDR;
      GLsizei   vboSize;
      GLsizei   iboSize;
      int       cloneIdx;
    };

    struct StateIncarnation {
      GLuint    programs;
      GLuint    fbos;

      StateIncarnation() {
        programs = 0;
        fbos = 0;
      }
    };

    int       m_numMatrices;

    std::vector<Geometry> m_geometry;

    bool      m_bindless_ubo;
    bool      m_cmdlist;

    nv_helpers_gl::ProfilerTimersGL m_gltimers;

    StateIncarnation  m_state;

    void synchronize()
    {
      glFinish();
    }

    void init();
    void deinit(nv_helpers_gl::ProgramManager &mgr);
    
    bool initPrograms(nv_helpers_gl::ProgramManager &mgr);
    void updatedPrograms(nv_helpers_gl::ProgramManager &mgr);
    void deinitPrograms(nv_helpers_gl::ProgramManager &mgr);
    
    bool initFramebuffer(int width, int height, int msaa);
    void deinitFramebuffer();

    bool initScene(const CadScene&);
    void deinitScene();

    void animation(Global& global);
    void animationReset();

    void rebuildStateObjects() const;

    nv_helpers::Profiler::GPUInterface*  getTimerInterface() { return &m_gltimers; }


    static void enableVertexFormat(int attrPos, int attrNormal)
    {
      glVertexAttribFormat(attrPos,    3,GL_FLOAT,GL_FALSE,offsetof(CadScene::Vertex,position));
      glVertexAttribFormat(attrNormal, 3,GL_FLOAT,GL_FALSE,offsetof(CadScene::Vertex,normal));
      glVertexAttribBinding(attrPos,0);
      glVertexAttribBinding(attrNormal,0);
      glEnableVertexAttribArray(attrPos);
      glEnableVertexAttribArray(attrNormal);
      glBindVertexBuffer(0,0,0,sizeof(CadScene::Vertex));
    }

    static void disableVertexFormat(int attrPos, int attrNormal)
    {
      glDisableVertexAttribArray(attrPos);
      glDisableVertexAttribArray(attrNormal);
      glBindVertexBuffer(0,0,0,16);
    }

    static ResourcesGL* get() {
      static ResourcesGL resGL;

      return &resGL;
    }
    
  };
  
}