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This commit is contained in:
romkazvo
306
RenderDll/XRenderOGL/GLREShadowVolume.cpp
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306
RenderDll/XRenderOGL/GLREShadowVolume.cpp
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//////////////////////////////////////////////////////////////////////
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//
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// Crytek RenderDLL source code
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//
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// File: GLREShadowVolume.cpp
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//
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// History:
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// -October 18,2001:Created by Marco Corbetta
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//
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//////////////////////////////////////////////////////////////////////
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#include "RenderPCH.h"
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#include "GL_Renderer.h"
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#include "I3dengine.h" // USE_SHADOW_VERSION
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///////////////////////////////////////////////////////////////////
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//TODO: Move into renderer header
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#include "..\..\Cry3DEngine\ShadowVolumeEdge.h"
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///////////////////////////////////////////////////////////////////
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bool CRETriMeshShadow::mfDraw(SShader *ef, SShaderPass *sfm)
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{
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if(m_nCurrInst<0 || m_nCurrInst>=MAX_SV_INSTANCES)
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{
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iLog->Log("Warning: CRETriMeshShadow::mfDraw: m_nCurrInst not set");
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return false;
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}
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// assert(m_arrLBuffers[m_nCurrInst].pVB);
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CGLRenderer *rd = gcpOGL;
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CDLight *pDL = NULL;
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if (rd->m_RP.m_DynLMask)
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{
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for (int n=0; n<rd->m_RP.m_DLights[SRendItem::m_RecurseLevel].Num(); n++)
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{
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if (rd->m_RP.m_DynLMask & (1<<n))
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{
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pDL = rd->m_RP.m_DLights[SRendItem::m_RecurseLevel][n];
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break;
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}
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}
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}
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if (pDL && pDL->m_sWidth && pDL->m_sHeight)
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rd->EF_Scissor(true, pDL->m_sX, pDL->m_sY, pDL->m_sWidth, pDL->m_sHeight);
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//disable blending, alpha testing,
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//z-writing - use the z-fail stencil method
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CGLTexMan::BindNULL(0);
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rd->EF_SetColorOp(eCO_DISABLE, eCO_DISABLE, DEF_TEXARG0, DEF_TEXARG0);
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if (rd->CV_ind_VisualizeShadowVolumes)
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{
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glColor4f(1,1,1,1);
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rd->EF_SetState(GS_NODEPTHTEST | GS_STENCIL);
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}
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else
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rd->EF_SetState(GS_NOCOLMASK | GS_STENCIL);
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if(m_arrLBuffers[m_nCurrInst].pVB && m_arrLBuffers[m_nCurrInst].pVB->m_pVertexBuffer)
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{
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if (SUPPORTS_GL_ATI_separate_stencil || SUPPORTS_GL_EXT_stencil_two_side)
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{
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// using 2-sided stencil
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rd->EF_SetStencilState(STENCOP_FAIL(FSS_STENCOP_KEEP) |
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STENCOP_ZFAIL(FSS_STENCOP_DECR_WRAP) |
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STENCOP_PASS(FSS_STENCOP_KEEP) |
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STENC_FUNC(FSS_STENCFUNC_ALWAYS) |
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STENCOP_CCW_FAIL(FSS_STENCOP_KEEP) |
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STENCOP_CCW_ZFAIL(FSS_STENCOP_INCR_WRAP) |
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STENCOP_CCW_PASS(FSS_STENCOP_KEEP) |
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STENC_CCW_FUNC(FSS_STENCFUNC_ALWAYS) |
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FSS_STENCIL_TWOSIDED,
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0, -1);
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rd->GLSetCull(eCULL_None);
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CVertexBuffer * pVB = m_arrLBuffers[m_nCurrInst].pVB->m_pVertexBuffer;
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SVertexStream *Indices = &m_arrLBuffers[m_nCurrInst].pVB->m_Indices;
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int nIndices;
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if (m_nRendIndices)
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nIndices = m_nRendIndices;
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else
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nIndices = Indices->m_nItems;
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assert(nIndices);
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rd->DrawBuffer(pVB, Indices, nIndices, 0, R_PRIMV_TRIANGLES);
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rd->SetFenceCompleted(pVB); // set it explicitly since second DrawBuffer do not set it
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gRenDev->m_nShadowVolumePolys += (nIndices/3);
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}
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else
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{
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rd->EF_SetStencilState(STENCOP_FAIL(FSS_STENCOP_KEEP) |
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STENCOP_ZFAIL(FSS_STENCOP_INCR) |
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STENCOP_PASS(FSS_STENCOP_KEEP) |
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STENC_FUNC(FSS_STENCFUNC_ALWAYS),
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0, -1);
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rd->GLSetCull(eCULL_Front);
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CVertexBuffer * pVB = m_arrLBuffers[m_nCurrInst].pVB->m_pVertexBuffer;
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SVertexStream *Indices = &m_arrLBuffers[m_nCurrInst].pVB->m_Indices;
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int nIndices;
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if (m_nRendIndices)
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nIndices = m_nRendIndices;
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else
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nIndices = Indices->m_nItems;
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assert(nIndices);
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rd->DrawBuffer(pVB, Indices, nIndices, 0, R_PRIMV_TRIANGLES);
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rd->EF_SetStencilState(STENCOP_FAIL(FSS_STENCOP_KEEP) |
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STENCOP_ZFAIL(FSS_STENCOP_DECR) |
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STENCOP_PASS(FSS_STENCOP_KEEP) |
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STENC_FUNC(FSS_STENCFUNC_ALWAYS),
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0, -1);
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rd->GLSetCull(eCULL_Back);
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rd->DrawBuffer(pVB, Indices, nIndices, 0, R_PRIMV_TRIANGLES);
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rd->SetFenceCompleted(pVB); // set it explicitly since second DrawBuffer do not set it
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gRenDev->m_nShadowVolumePolys += (nIndices*2/3);
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}
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}
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m_nCurrInst = -1;
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return (true);
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}
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/*
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//TODO: BackFace culling
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//TODO: put into vertex buffer
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///////////////////////////////////////////////////////////////////
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bool CRETriMeshAdditionalShadow::mfDraw(SShader *ef, SShaderPass *sfm)
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{
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int k;
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/*
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//cull front-facing
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glCullFace(GL_FRONT);
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//first draw all back-facing and set z-buffer
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glColorMask(0,0,0,0);
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glDisable(GL_TEXTURE_2D);
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glDepthFunc(GL_LEQUAL);
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//glDisable(GL_CULL_FACE);
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glBegin(GL_TRIANGLES);
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for (k=0;k<m_nNumFaces;k++)
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{
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CObjFace *pFace=&m_pFacesList[k];
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if (!pFace->m_bLit)
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{
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glVertex3fv(&pFace->m_Vecs[0].x);
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glVertex3fv(&pFace->m_Vecs[1].x);
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glVertex3fv(&pFace->m_Vecs[2].x);
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}
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} //k
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glEnd();
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glColorMask(1,1,1,1);
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glDepthFunc(GL_EQUAL);
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//glDepthFunc(GL_LEQUAL);
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//glDisable(GL_DEPTH_TEST);
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glEnable(GL_BLEND);
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glBlendFunc(GL_ZERO,GL_SRC_COLOR);
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//glBlendFunc(GL_DST_COLOR,GL_ZERO);
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//if (m_pTexture)
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if (0)
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{
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gRenDev->SetTexture(m_pTexture->m_Bind);
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glEnable(GL_TEXTURE_2D);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
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}
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CShadowVolEdge *pEdge;
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glBegin(GL_TRIANGLES);
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for (k=0;k<m_nNumFaces;k++)
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{
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CObjFace *pFace=&m_pFacesList[k];
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if (pFace->m_bLit || (pFace->m_dwFlags&FLAG_BLACK_FACE))
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continue;
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for (int i=0;i<3;i++)
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{
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//glTexCoord2f(pFace->m_fCoords[i][0],pFace->m_fCoords[i][1]);
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pEdge=pFace->m_pEdges[i];
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glColor3fv(&pFace->m_vColors[i].r);
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glVertex3fv(&pFace->m_Vecs[i].x);
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} //i
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} //k
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glEnd();
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//return to previous state
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glDisable(GL_BLEND);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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glDepthFunc(GL_LEQUAL);
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glEnable(GL_TEXTURE_2D);
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glColorMask(1,1,1,1);
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*//*
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glDepthMask(0);
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glDisable(GL_TEXTURE_2D);
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//glDisable(GL_DEPTH_TEST);
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glDisable(GL_CULL_FACE);
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//glEnable(GL_LINE_SMOOTH);
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//glLineWidth(8.0f);
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//glPushMatrix();
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//glTranslatef(m_vOrigin.x,m_vOrigin.y,m_vOrigin.z);
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//glDisable(GL_BLEND);
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glEnable(GL_BLEND);
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//glBlendFunc(GL_ZERO,GL_SRC_COLOR);
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glBlendFunc(GL_DST_COLOR,GL_ZERO);
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float fDarkness=0.0f;
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//glPolygonOffset(1.1f,4.0f);
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//glEnable(GL_POLYGON_OFFSET_FILL);
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//glDisable(GL_DEPTH_TEST);
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glBegin(GL_QUADS);
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for (k=0;k<m_nNumEdges;k++)
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{
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CShadowVolEdge *pEdge=&m_pShadowVolEdgesList[k];
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if ((!(pEdge->m_pAddEdge->m_dwFlags & FLAG_FALSE_EDGE_SILOHUETTE)) && (pEdge->m_pFace1->m_bLit!=pEdge->m_pFace2->m_bLit))
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{
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//glBegin(GL_LINE_LOOP);
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glColor3f(fDarkness,fDarkness,fDarkness);
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glVertex3fv(&pEdge->m_vecV0.x);
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glColor3f(1,1,1);
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glVertex3fv(&pEdge->m_pAddEdge->m_vExtrOut[0].x);
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glColor3f(1,1,1);
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glVertex3fv(&pEdge->m_pAddEdge->m_vExtrOut[1].x);
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glColor3f(fDarkness,fDarkness,fDarkness);
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glVertex3fv(&pEdge->m_vecV1.x);
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gRenDev->m_nPolygons += 2;
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//glEnd();
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}
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}
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glEnd();
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if (gRenDev->CV_ind_DrawBorderEdges)
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{
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//glDisable(GL_DEPTH_TEST);
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//glPolygonOffset(1.1f,4.0f);
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//glEnable(GL_POLYGON_OFFSET_FILL);
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glDepthFunc(GL_LEQUAL);
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glColor3f(fDarkness,fDarkness,fDarkness);
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//glColor3f(1,0,0);
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glBegin(GL_QUADS);
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for (k=0;k<m_nNumEdges;k++)
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{
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CShadowVolEdge *pEdge=&m_pShadowVolEdgesList[k];
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if ((!(pEdge->m_pAddEdge->m_dwFlags & FLAG_FALSE_EDGE_SILOHUETTE)) && (pEdge->m_pFace1->m_bLit!=pEdge->m_pFace2->m_bLit))
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{
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glColor3f(fDarkness,fDarkness,fDarkness);
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glVertex3fv(&pEdge->m_vecV0.x);
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glColor3f(1,1,1);
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glVertex3fv(&pEdge->m_pAddEdge->m_vExtrIn[0].x);
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glColor3f(1,1,1);
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glVertex3fv(&pEdge->m_pAddEdge->m_vExtrIn[1].x);
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glColor3f(fDarkness,fDarkness,fDarkness);
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glVertex3fv(&pEdge->m_vecV1.x);
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gRenDev->m_nPolygons += 2;
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}
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}
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glEnd();
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}
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//glPopMatrix();
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glDisable(GL_BLEND);
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glDisable(GL_LINE_SMOOTH);
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glLineWidth(1.0f);
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glDepthFunc(GL_LEQUAL);
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glDisable(GL_POLYGON_OFFSET_FILL);
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glDepthMask(1);
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return (true);
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}
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*/
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