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https://github.com/nillerusr/source-engine.git
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625 lines
18 KiB
C++
625 lines
18 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//===========================================================================//
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#include "matsys_controls/vmtpreviewpanel.h"
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#include "matsys_controls/matsyscontrols.h"
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#include "VGuiMatSurface/IMatSystemSurface.h"
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#include "materialsystem/MaterialSystemUtil.h"
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#include "materialsystem/imaterialsystem.h"
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#include "materialsystem/imaterial.h"
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#include "materialsystem/itexture.h"
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#include "materialsystem/imesh.h"
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#include "tier1/KeyValues.h"
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using namespace vgui;
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#define FOV 90.0f
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#define ZNEAR 0.1f
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#define ZFAR 2000.0f
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#define ROTATION_SPEED 40.0f // degrees/sec
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#define VIEW_DISTANCE 12.0f
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//-----------------------------------------------------------------------------
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//
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// VMT Preview panel
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//
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// constructor
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//-----------------------------------------------------------------------------
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CVMTPreviewPanel::CVMTPreviewPanel( vgui::Panel *pParent, const char *pName ) :
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BaseClass( pParent, pName )
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{
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SetVMT( "//platform/materials/vgui/vtfnotloaded" );
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m_pLightmapTexture.Init( "//platform/materials/debug/defaultlightmap", "editor" );
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m_DefaultEnvCubemap.Init( "editor/cubemap", "editor", true );
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m_LightDirection.Init( 0.0f, 1.0f, -1.0f );
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m_LightColor.SetColor( 255, 255, 255, 255 );
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m_flLightIntensity = 2.0f;
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m_bDrawIn3DMode = false;
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// Reset the camera direction
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m_vecCameraDirection.Init( 1.0f, 0.0f, 0.0f );
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m_flLastRotationTime = Plat_FloatTime();
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}
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//-----------------------------------------------------------------------------
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// Sets the current VMT
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::SetVMT( const char *pMaterialName )
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{
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m_Material.Init( pMaterialName, "editor material" );
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m_VMTName = pMaterialName;
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}
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//-----------------------------------------------------------------------------
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// Gets the current VMT
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//-----------------------------------------------------------------------------
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const char *CVMTPreviewPanel::GetVMT() const
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{
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return m_VMTName;
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}
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//-----------------------------------------------------------------------------
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// View it in 3D or 2D mode
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::DrawIn3DMode( bool b3DMode )
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{
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m_bDrawIn3DMode = b3DMode;
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}
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//-----------------------------------------------------------------------------
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// Sets up lighting state
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::SetupLightingState()
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{
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LightDesc_t desc;
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memset( &desc, 0, sizeof(desc) );
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desc.m_Type = MATERIAL_LIGHT_DIRECTIONAL;
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desc.m_Color[0] = m_LightColor.r();
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desc.m_Color[1] = m_LightColor.g();
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desc.m_Color[2] = m_LightColor.b();
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desc.m_Color *= m_flLightIntensity / 255.0f;
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desc.m_Attenuation0 = 1.0f;
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desc.m_Attenuation1 = 0.0f;
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desc.m_Attenuation2 = 0.0f;
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desc.m_Flags = LIGHTTYPE_OPTIMIZATIONFLAGS_HAS_ATTENUATION0;
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desc.m_Direction = m_LightDirection;
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VectorNormalize( desc.m_Direction );
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desc.m_Theta = 0.0f;
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desc.m_Phi = 0.0f;
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desc.m_Falloff = 1.0f;
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CMatRenderContextPtr pRenderContext( MaterialSystem() );
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pRenderContext->SetLight( 0, desc );
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}
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//-----------------------------------------------------------------------------
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// Draw a sphere
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::RenderSphere( const Vector &vCenter, float flRadius, int nTheta, int nPhi )
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{
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int nVertices = nTheta * nPhi;
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int nIndices = 2 * ( nTheta + 1 ) * ( nPhi - 1 );
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CMatRenderContextPtr pRenderContext( MaterialSystem() );
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IMesh* pMesh = pRenderContext->GetDynamicMesh();
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CMeshBuilder meshBuilder;
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meshBuilder.Begin( pMesh, MATERIAL_TRIANGLE_STRIP, nVertices, nIndices );
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bool bIsUsingLightmap = m_Material->GetPropertyFlag( MATERIAL_PROPERTY_NEEDS_LIGHTMAP );
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bool bIsUsingBumpedLightmap = m_Material->GetPropertyFlag( MATERIAL_PROPERTY_NEEDS_BUMPED_LIGHTMAPS );
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int nLightmapWidth = m_pLightmapTexture->GetActualWidth();
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float flHalfLuxel = 0.5f / nLightmapWidth;
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//
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// Build the index buffer.
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//
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int i, j;
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for ( i = 0; i < nPhi; ++i )
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{
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for ( j = 0; j < nTheta; ++j )
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{
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float u = j / ( float )(nTheta - 1);
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float v = i / ( float )(nPhi - 1);
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float theta = ( j != nTheta-1 ) ? 2.0f * M_PI * u : 0.0f;
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float phi = M_PI * v;
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Vector vecPos;
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vecPos.x = flRadius * sin(phi) * cos(theta);
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vecPos.y = flRadius * sin(phi) * sin(theta);
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vecPos.z = flRadius * cos(phi);
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Vector vecNormal = vecPos;
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VectorNormalize( vecNormal );
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Vector4D vecTangentS;
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Vector vecTangentT;
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vecTangentS.Init( vecPos.z, -vecPos.x, 0.0f, 1.0f );
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if ( VectorNormalize( vecTangentS.AsVector3D() ) == 0.0f )
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{
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vecTangentS.Init( 1.0f, 0.0f, 0.0f, 1.0f );
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}
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CrossProduct( vecNormal, vecTangentS.AsVector3D(), vecTangentT );
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unsigned char red = (int)( u * 255.0f );
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unsigned char green = (int)( v * 255.0f );
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unsigned char blue = (int)( v * 255.0f );
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unsigned char alpha = (int)( v * 255.0f );
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vecPos += vCenter;
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float u1, u2, v1, v2;
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u1 = u2 = u;
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v1 = v2 = v;
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if ( bIsUsingLightmap )
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{
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u1 = RemapVal( u1, 0.0f, 1.0f, flHalfLuxel, 0.25 - flHalfLuxel );
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if ( bIsUsingBumpedLightmap )
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{
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u2 = 0.25f;
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v2 = 0.0f;
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}
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}
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meshBuilder.Position3fv( vecPos.Base() );
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meshBuilder.Normal3fv( vecNormal.Base() );
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meshBuilder.Color4ub( red, green, blue, alpha );
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meshBuilder.TexCoord2f( 0, 2.0f * u, v );
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meshBuilder.TexCoord2f( 1, u1, v1 );
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meshBuilder.TexCoord2f( 2, u2, v2 );
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meshBuilder.TangentS3fv( vecTangentS.Base() );
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meshBuilder.TangentT3fv( vecTangentT.Base() );
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meshBuilder.BoneWeight( 0, 1.0f );
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meshBuilder.BoneMatrix( 0, 0 );
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meshBuilder.UserData( vecTangentS.Base() );
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meshBuilder.AdvanceVertex();
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}
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}
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//
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// Emit the triangle strips.
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//
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int idx = 0;
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for ( i = 0; i < nPhi - 1; ++i )
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{
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for ( j = 0; j < nTheta; ++j )
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{
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idx = nTheta * i + j;
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meshBuilder.FastIndex( idx );
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meshBuilder.FastIndex( idx + nTheta );
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}
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//
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// Emit a degenerate triangle to skip to the next row without
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// a connecting triangle.
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//
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if ( i < nPhi - 2 )
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{
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meshBuilder.FastIndex( idx + 1 );
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meshBuilder.FastIndex( idx + 1 + nTheta );
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}
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}
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meshBuilder.End();
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pMesh->Draw();
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}
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//-----------------------------------------------------------------------------
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// Draw sprite-card based materials
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::RenderSpriteCard( const Vector &vCenter, float flRadius )
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{
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CMatRenderContextPtr pRenderContext( MaterialSystem() );
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IMesh *pMesh = pRenderContext->GetDynamicMesh();
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CMeshBuilder meshBuilder;
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meshBuilder.Begin( pMesh, MATERIAL_QUADS, 1 );
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// Draw a polygon the size of the panel
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meshBuilder.Position3fv( vCenter.Base() );
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meshBuilder.Color4ub( 255, 255, 255, 255 );
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meshBuilder.TexCoord4f( 0, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 1, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 2, 0.0f, 0.0f, flRadius, 0.0f );
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meshBuilder.TexCoord2f( 3, 0, 0 );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3fv( vCenter.Base() );
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meshBuilder.Color4ub( 255, 255, 255, 255 );
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meshBuilder.TexCoord4f( 0, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 1, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 2, 0.0f, 0.0f, flRadius, 0.0f );
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meshBuilder.TexCoord2f( 3, 0, 1 );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3fv( vCenter.Base() );
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meshBuilder.Color4ub( 255, 255, 255, 255 );
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meshBuilder.TexCoord4f( 0, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 1, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 2, 0.0f, 0.0f, flRadius, 0.0f );
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meshBuilder.TexCoord2f( 3, 1, 1 );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3fv( vCenter.Base() );
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meshBuilder.Color4ub( 255, 255, 255, 255 );
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meshBuilder.TexCoord4f( 0, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 1, 0.0f, 0.0f, 1.0f, 1.0f );
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meshBuilder.TexCoord4f( 2, 0.0f, 0.0f, flRadius, 0.0f );
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meshBuilder.TexCoord2f( 3, 1, 0 );
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meshBuilder.AdvanceVertex();
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meshBuilder.End();
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pMesh->Draw();
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}
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//-----------------------------------------------------------------------------
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// Paints a regular texture
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::DrawRectangle( void )
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{
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// Get the aspect ratio of the material
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int tw = m_Material->GetMappingWidth();
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int th = m_Material->GetMappingHeight();
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if ( tw <= 0 || th <= 0 )
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return;
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int w, h;
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GetSize( w, h );
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if ( w == 0 || h == 0 )
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return;
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SetupOrthoMatrix( w, h );
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SetupLightingState();
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CMatRenderContextPtr pRenderContext( MaterialSystem() );
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pRenderContext->MatrixMode( MATERIAL_VIEW );
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pRenderContext->LoadIdentity();
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pRenderContext->MatrixMode( MATERIAL_MODEL );
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pRenderContext->LoadIdentity();
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IMesh* pMesh = pRenderContext->GetDynamicMesh();
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CMeshBuilder meshBuilder;
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meshBuilder.Begin( pMesh, MATERIAL_TRIANGLE_STRIP, 4, 4 );
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bool bIsUsingLightmap = m_Material->GetPropertyFlag( MATERIAL_PROPERTY_NEEDS_LIGHTMAP );
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bool bIsUsingBumpedLightmap = m_Material->GetPropertyFlag( MATERIAL_PROPERTY_NEEDS_BUMPED_LIGHTMAPS );
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int nLightmapWidth = m_pLightmapTexture->GetActualWidth();
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float flHalfLuxel = 0.5f / nLightmapWidth;
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Vector2D halfTexel( 0.5f / tw, 0.5f / th );
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Vector vecNormal( 0.0f, 0.0f, 1.0f );
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Vector4D vecTangentS( 1.0f, 0.0f, 0.0f, 1.0f );
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Vector vecTangentT;
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CrossProduct( vecNormal, vecTangentS.AsVector3D(), vecTangentT );
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float screenaspect = (float)tw / (float)th;
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float aspect = (float)w / (float)h;
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float ratio = screenaspect / aspect;
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// Screen is wider, need bars at top and bottom
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int x2, y2;
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int x, y;
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x = y = 0;
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int nXBorder = w > 15 ? 5 : w / 3;
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int nYBorder = h > 15 ? 5 : h / 3;
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w -= 2 * nXBorder;
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h -= 2 * nYBorder;
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if ( ratio > 1.0f )
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{
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int usetall = (float)w / screenaspect;
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y = ( h - usetall ) / 2;
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h = usetall;
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}
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// Screen is narrower, need bars at left/right
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else
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{
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int usewide = (float)h * screenaspect;
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x = ( w - usewide ) / 2;
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w = usewide;
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}
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x += nXBorder;
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y += nYBorder;
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x2 = x+w; y2 = y+h;
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float u = halfTexel.x;
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float v = halfTexel.y;
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float u1_l, u1_r, v1_t, v1_b;
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float u2_l, u2_r, v2_t, v2_b;
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u1_l = u2_l = u;
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u1_r = u2_r = 1.0f - u;
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v1_t = v2_t = v;
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v1_b = v2_b = 1.0f - v;
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if ( bIsUsingLightmap )
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{
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u1_l = v1_t = flHalfLuxel;
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u1_r = v1_b = 0.25 - flHalfLuxel;
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if ( bIsUsingBumpedLightmap )
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{
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u2_l = u2_r = 0.25f;
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v2_t = v2_b = 0.0f;
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}
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}
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meshBuilder.Position3f( x, y2, 0.0f );
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meshBuilder.Normal3fv( vecNormal.Base() );
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meshBuilder.Color4ub( 255, 0, 0, 255 );
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meshBuilder.TexCoord2f( 0, u, v );
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meshBuilder.TexCoord2f( 1, u1_l, v1_t );
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meshBuilder.TexCoord2f( 2, u2_l, v2_t );
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meshBuilder.TangentS3fv( vecTangentS.Base() );
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meshBuilder.TangentT3fv( vecTangentT.Base() );
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meshBuilder.BoneWeight( 0, 1.0f );
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meshBuilder.BoneMatrix( 0, 0 );
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meshBuilder.UserData( vecTangentS.Base() );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3f( x, y, 0.0f );
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meshBuilder.Normal3fv( vecNormal.Base() );
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meshBuilder.Color4ub( 255, 255, 255, 64 );
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meshBuilder.TexCoord2f( 0, u, 1.0f - v );
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meshBuilder.TexCoord2f( 1, u1_l, v1_b );
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meshBuilder.TexCoord2f( 2, u2_l, v2_b );
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meshBuilder.TangentS3fv( vecTangentS.Base() );
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meshBuilder.TangentT3fv( vecTangentT.Base() );
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meshBuilder.BoneWeight( 0, 1.0f );
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meshBuilder.BoneMatrix( 0, 0 );
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meshBuilder.UserData( vecTangentS.Base() );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3f( x2, y2, 0.0f );
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meshBuilder.Normal3fv( vecNormal.Base() );
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meshBuilder.Color4ub( 0, 0, 255, 255 );
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meshBuilder.TexCoord2f( 0, 1.0f - u, v );
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meshBuilder.TexCoord2f( 1, u1_r, v1_t );
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meshBuilder.TexCoord2f( 2, u2_r, v2_t );
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meshBuilder.TangentS3fv( vecTangentS.Base() );
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meshBuilder.TangentT3fv( vecTangentT.Base() );
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meshBuilder.BoneWeight( 0, 1.0f );
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meshBuilder.BoneMatrix( 0, 0 );
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meshBuilder.UserData( vecTangentS.Base() );
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meshBuilder.AdvanceVertex();
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meshBuilder.Position3f( x2, y, 0.0f );
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meshBuilder.Normal3fv( vecNormal.Base() );
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meshBuilder.Color4ub( 0, 255, 0, 64 );
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meshBuilder.TexCoord2f( 0, 1.0f - u, 1.0f - v );
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meshBuilder.TexCoord2f( 1, u1_r, v1_b );
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meshBuilder.TexCoord2f( 2, u2_r, v2_b );
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meshBuilder.TangentS3fv( vecTangentS.Base() );
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meshBuilder.TangentT3fv( vecTangentT.Base() );
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meshBuilder.BoneWeight( 0, 1.0f );
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meshBuilder.BoneMatrix( 0, 0 );
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meshBuilder.UserData( vecTangentS.Base() );
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meshBuilder.AdvanceVertex();
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meshBuilder.FastIndex( 0 );
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meshBuilder.FastIndex( 1 );
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meshBuilder.FastIndex( 2 );
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meshBuilder.FastIndex( 3 );
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meshBuilder.End();
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pMesh->Draw();
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}
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//-----------------------------------------------------------------------------
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// Paints a cubemap texture
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::DrawSphere( void )
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{
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float flNewTime = Plat_FloatTime();
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// Circle the camera around the origin
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VMatrix rot;
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MatrixBuildRotateZ( rot, ROTATION_SPEED * (flNewTime - m_flLastRotationTime ) );
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Vector vecTemp;
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Vector3DMultiply( rot, m_vecCameraDirection, vecTemp );
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m_vecCameraDirection = vecTemp;
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m_flLastRotationTime = flNewTime;
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int w, h;
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GetSize( w, h );
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SetupProjectionMatrix( w, h );
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SetupLightingState();
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LookAt( vec3_origin, VIEW_DISTANCE );
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// Draw a sphere at the origin
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if ( !m_Material->IsSpriteCard() )
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{
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RenderSphere( vec3_origin, 10.0f, 20, 20 );
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}
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else
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{
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RenderSpriteCard( vec3_origin, 10.0f );
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}
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}
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//-----------------------------------------------------------------------------
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// Sets the camera to look at the the thing we're spinning around
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//-----------------------------------------------------------------------------
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void CVMTPreviewPanel::LookAt( const Vector &vecLookAt, float flRadius )
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{
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// Compute the distance to the camera for the object based on its
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// radius and fov.
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// since tan( fov/2 ) = f/d
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// cos( fov/2 ) = r / r' where r = sphere radius, r' = perp distance from sphere center to max extent of camera
|
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// d/f = r'/d' where d' is distance of camera to sphere
|
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// d' = r' / tan( fov/2 ) * r' = r / ( cos (fov/2) * tan( fov/2 ) ) = r / sin( fov/2 )
|
|
float flFOVx = FOV;
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|
|
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// Compute fov/2 in radians
|
|
flFOVx *= M_PI / 360.0f;
|
|
|
|
// Compute an effective fov based on the aspect ratio
|
|
// if the height is smaller than the width
|
|
int w, h;
|
|
GetSize( w, h );
|
|
if ( h < w )
|
|
{
|
|
flFOVx = atan( h * tan( flFOVx ) / w );
|
|
}
|
|
|
|
float flDistance = flRadius / sin( flFOVx );
|
|
|
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Vector vecMDLOrigin = vecLookAt;
|
|
Vector vecCameraOrigin;
|
|
VectorMA( vecMDLOrigin, -flDistance, m_vecCameraDirection, vecCameraOrigin );
|
|
|
|
CMatRenderContextPtr pRenderContext( MaterialSystem() );
|
|
QAngle angles;
|
|
VectorAngles( m_vecCameraDirection, angles );
|
|
|
|
pRenderContext->MatrixMode( MATERIAL_VIEW );
|
|
pRenderContext->LoadIdentity();
|
|
|
|
// convert from a right handed system to a left handed system
|
|
// since dx for wants it that way.
|
|
// pRenderContext->Scale( 1.0f, 1.0f, -1.0f );
|
|
|
|
pRenderContext->Rotate( -90, 1, 0, 0 ); // put Z going up
|
|
pRenderContext->Rotate( 90, 0, 0, 1 ); // put Z going up
|
|
pRenderContext->Rotate( -angles[2], 1, 0, 0 );
|
|
pRenderContext->Rotate( -angles[0], 0, 1, 0 );
|
|
pRenderContext->Rotate( -angles[1], 0, 0, 1 );
|
|
pRenderContext->Translate( -vecCameraOrigin[0], -vecCameraOrigin[1], -vecCameraOrigin[2] );
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Set up a projection matrix for a 90 degree fov
|
|
//-----------------------------------------------------------------------------
|
|
void CVMTPreviewPanel::SetupProjectionMatrix( int nWidth, int nHeight )
|
|
{
|
|
VMatrix proj;
|
|
float flFOV = FOV;
|
|
float flZNear = ZNEAR;
|
|
float flZFar = ZFAR;
|
|
float flApsectRatio = (nHeight != 0.0f) ? (float)nWidth / (float)nHeight : 100.0f;
|
|
|
|
float halfWidth = tan( flFOV * M_PI / 360.0 );
|
|
float halfHeight = halfWidth / flApsectRatio;
|
|
|
|
memset( proj.Base(), 0, sizeof( proj ) );
|
|
proj[0][0] = 1.0f / halfWidth;
|
|
proj[1][1] = 1.0f / halfHeight;
|
|
proj[2][2] = flZFar / ( flZNear - flZFar );
|
|
proj[3][2] = -1.0f;
|
|
proj[2][3] = flZNear * flZFar / ( flZNear - flZFar );
|
|
|
|
CMatRenderContextPtr pRenderContext( MaterialSystem() );
|
|
pRenderContext->MatrixMode( MATERIAL_PROJECTION );
|
|
pRenderContext->LoadMatrix( proj );
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Set up a orthographic projection matrix
|
|
//-----------------------------------------------------------------------------
|
|
void CVMTPreviewPanel::SetupOrthoMatrix( int nWidth, int nHeight )
|
|
{
|
|
CMatRenderContextPtr pRenderContext( MaterialSystem() );
|
|
pRenderContext->MatrixMode( MATERIAL_PROJECTION );
|
|
pRenderContext->LoadIdentity();
|
|
pRenderContext->Ortho( 0, 0, nWidth, nHeight, -1.0f, 1.0f );
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Power of two FB texture
|
|
//-----------------------------------------------------------------------------
|
|
static CTextureReference s_pPowerOfTwoFrameBufferTexture;
|
|
|
|
static ITexture *GetPowerOfTwoFrameBufferTexture( void )
|
|
{
|
|
if( !s_pPowerOfTwoFrameBufferTexture )
|
|
{
|
|
s_pPowerOfTwoFrameBufferTexture.Init( vgui::MaterialSystem()->FindTexture( "_rt_PowerOfTwoFB", TEXTURE_GROUP_RENDER_TARGET ) );
|
|
}
|
|
|
|
return s_pPowerOfTwoFrameBufferTexture;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Paints the texture
|
|
//-----------------------------------------------------------------------------
|
|
void CVMTPreviewPanel::Paint( void )
|
|
{
|
|
CMatRenderContextPtr pRenderContext( MaterialSystem() );
|
|
int w, h;
|
|
GetSize( w, h );
|
|
vgui::MatSystemSurface()->Begin3DPaint( 0, 0, w, h );
|
|
|
|
// Deal with refraction
|
|
if ( m_Material->NeedsPowerOfTwoFrameBufferTexture() )
|
|
{
|
|
ITexture *pTexture = GetPowerOfTwoFrameBufferTexture();
|
|
if ( pTexture && !pTexture->IsError() )
|
|
{
|
|
pRenderContext->CopyRenderTargetToTexture( pTexture );
|
|
pRenderContext->SetFrameBufferCopyTexture( pTexture );
|
|
}
|
|
}
|
|
|
|
pRenderContext->ClearColor4ub( 76, 88, 68, 255 );
|
|
pRenderContext->ClearBuffers( true, true );
|
|
|
|
pRenderContext->FogMode( MATERIAL_FOG_NONE );
|
|
pRenderContext->SetNumBoneWeights( 0 );
|
|
pRenderContext->Bind( m_Material );
|
|
pRenderContext->BindLightmapTexture( m_pLightmapTexture );
|
|
pRenderContext->BindLocalCubemap( m_DefaultEnvCubemap );
|
|
|
|
if ( m_bDrawIn3DMode || m_Material->IsSpriteCard() )
|
|
{
|
|
DrawSphere();
|
|
}
|
|
else
|
|
{
|
|
DrawRectangle();
|
|
}
|
|
|
|
vgui::MatSystemSurface()->End3DPaint( );
|
|
} |