d4708
/
source-engine
mirror of https://github.com/nillerusr/source-engine.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
10 Commits
25 Branches
6 Tags
221 MiB
 
 
 
 
 
 
Tree: 84a698de7b
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '84a698de7b'
${ noResults }
source-engine/tier2/renderutils.cpp

916 lines
28 KiB
Raw Blame History

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: A set of utilities to render standard shapes
//
//===========================================================================//
#include "tier2/renderutils.h"
#include "tier2/tier2.h"
#include "tier1/KeyValues.h"
#include "materialsystem/imaterialsystem.h"
#include "materialsystem/imesh.h"
#include "materialsystem/imaterial.h"
#include "tier0/vprof.h"
#include "tier0/basetypes.h"
#include "togl/rendermechanism.h"
#if !defined(M_PI)
#define M_PI 3.14159265358979323846
#endif
//-----------------------------------------------------------------------------
// Globals
//-----------------------------------------------------------------------------
static bool s_bMaterialsInitialized = false;
static IMaterial *s_pWireframe;
static IMaterial *s_pWireframeIgnoreZ;
static IMaterial *s_pVertexColor;
static IMaterial *s_pVertexColorIgnoreZ;
//-----------------------------------------------------------------------------
// Initializes standard materials
//-----------------------------------------------------------------------------
void InitializeStandardMaterials()
{
if ( s_bMaterialsInitialized )
return;
s_bMaterialsInitialized = true;
KeyValues *pVMTKeyValues = new KeyValues( "wireframe" );
pVMTKeyValues->SetInt( "$vertexcolor", 1 );
s_pWireframe = g_pMaterialSystem->CreateMaterial( "__utilWireframe", pVMTKeyValues );
pVMTKeyValues = new KeyValues( "wireframe" );
pVMTKeyValues->SetInt( "$vertexcolor", 1 );
pVMTKeyValues->SetInt( "$vertexalpha", 1 );
pVMTKeyValues->SetInt( "$ignorez", 1 );
s_pWireframeIgnoreZ = g_pMaterialSystem->CreateMaterial( "__utilWireframeIgnoreZ", pVMTKeyValues );
pVMTKeyValues = new KeyValues( "unlitgeneric" );
pVMTKeyValues->SetInt( "$vertexcolor", 1 );
pVMTKeyValues->SetInt( "$vertexalpha", 1 );
s_pVertexColor = g_pMaterialSystem->CreateMaterial( "__utilVertexColor", pVMTKeyValues );
pVMTKeyValues = new KeyValues( "unlitgeneric" );
pVMTKeyValues->SetInt( "$vertexcolor", 1 );
pVMTKeyValues->SetInt( "$vertexalpha", 1 );
pVMTKeyValues->SetInt( "$ignorez", 1 );
s_pVertexColorIgnoreZ = g_pMaterialSystem->CreateMaterial( "__utilVertexColorIgnoreZ", pVMTKeyValues );
}
void ShutdownStandardMaterials()
{
if ( !s_bMaterialsInitialized )
return;
s_bMaterialsInitialized = false;
s_pWireframe->DecrementReferenceCount();
s_pWireframe = NULL;
s_pWireframeIgnoreZ->DecrementReferenceCount();
s_pWireframeIgnoreZ = NULL;
s_pVertexColor->DecrementReferenceCount();
s_pVertexColor = NULL;
s_pVertexColorIgnoreZ->DecrementReferenceCount();
s_pVertexColorIgnoreZ = NULL;
}
//-----------------------------------------------------------------------------
// Renders a wireframe sphere
//-----------------------------------------------------------------------------
void RenderWireframeSphere( const Vector &vCenter, float flRadius, int nTheta, int nPhi, Color c, bool bZBuffer )
{
InitializeStandardMaterials();
// Make one more coordinate because (u,v) is discontinuous.
++nTheta;
int nVertices = nPhi * nTheta;
int nIndices = ( nTheta - 1 ) * 4 * ( nPhi - 1 );
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
CMeshBuilder meshBuilder;
IMesh* pMesh = pRenderContext->GetDynamicMesh();
meshBuilder.Begin( pMesh, MATERIAL_LINES, nVertices, nIndices );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
int i, j;
for ( i = 0; i < nPhi; ++i )
{
for ( j = 0; j < nTheta; ++j )
{
float u = j / ( float )( nTheta - 1 );
float v = i / ( float )( nPhi - 1 );
float theta = 2.0f * M_PI * u;
float phi = M_PI * v;
meshBuilder.Position3f( vCenter.x + ( flRadius * sin(phi) * cos(theta) ),
vCenter.y + ( flRadius * sin(phi) * sin(theta) ),
vCenter.z + ( flRadius * cos(phi) ) );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.AdvanceVertex();
}
}
for ( i = 0; i < nPhi - 1; ++i )
{
for ( j = 0; j < nTheta - 1; ++j )
{
int idx = nTheta * i + j;
meshBuilder.Index( idx );
meshBuilder.AdvanceIndex();
meshBuilder.Index( idx + nTheta );
meshBuilder.AdvanceIndex();
meshBuilder.Index( idx );
meshBuilder.AdvanceIndex();
meshBuilder.Index( idx + 1 );
meshBuilder.AdvanceIndex();
}
}
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Draws a sphere
//-----------------------------------------------------------------------------
void RenderSphere( const Vector &vCenter, float flRadius, int nTheta, int nPhi, Color c, IMaterial *pMaterial )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( materials );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
// Two extra degenerate triangles per row (except the last one)
int nTriangles = 2 * nTheta * ( nPhi - 1 );
int nIndices = 2 * ( nTheta + 1 ) * ( nPhi - 1 );
if ( nTriangles == 0 )
return;
pRenderContext->Bind( pMaterial );
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_TRIANGLE_STRIP, nTriangles, nIndices );
// Build the index buffer.
float flOONPhi = 1.0f / (nPhi-1);
float flOONTheta = 1.0f / (nTheta-1);
int i, j;
for ( i = 0; i < nPhi; ++i )
{
for ( j = 0; j < nTheta; ++j )
{
float u = j / ( float )( nTheta - 1 );
float v = i / ( float )( nPhi - 1 );
float theta = 2.0f * M_PI * u;
float phi = M_PI * v;
Vector vecPos;
vecPos.x = flRadius * sin(phi) * cos(theta);
vecPos.y = flRadius * sin(phi) * sin(theta);
vecPos.z = flRadius * cos(phi);
Vector vecNormal = vecPos;
VectorNormalize(vecNormal);
vecPos += vCenter;
meshBuilder.Position3f( vecPos.x, vecPos.y, vecPos.z );
meshBuilder.Normal3f( vecNormal.x, vecNormal.y, vecNormal.z );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.TexCoord2f( 0, j * flOONTheta, i * flOONPhi );
meshBuilder.AdvanceVertex();
}
}
// Emit the triangle strips.
int idx = 0;
for ( i = 0; i < nPhi - 1; ++i )
{
for ( j = 0; j < nTheta; ++j )
{
idx = nTheta * i + j;
meshBuilder.Index( idx + nTheta );
meshBuilder.AdvanceIndex();
meshBuilder.Index( idx );
meshBuilder.AdvanceIndex();
}
// Emit a degenerate triangle to skip to the next row without a connecting triangle
if ( i < nPhi - 2 )
{
meshBuilder.Index( idx );
meshBuilder.AdvanceIndex();
meshBuilder.Index( idx + nTheta + 1 );
meshBuilder.AdvanceIndex();
}
}
meshBuilder.End();
pMesh->Draw();
}
void RenderSphere( const Vector &vCenter, float flRadius, int nTheta, int nPhi, Color c, bool bZBuffer )
{
IMaterial *pMaterial = bZBuffer ? s_pVertexColor : s_pVertexColorIgnoreZ;
Color cActual( c.r(), c.g(), c.b(), c.a() );
RenderSphere( vCenter, flRadius, nTheta, nPhi, cActual, pMaterial );
}
//-----------------------------------------------------------------------------
// Box vertices
//-----------------------------------------------------------------------------
static int s_pBoxFaceIndices[6][4] =
{
{ 0, 4, 6, 2 }, // -x
{ 5, 1, 3, 7 }, // +x
{ 0, 1, 5, 4 }, // -y
{ 2, 6, 7, 3 }, // +y
{ 0, 2, 3, 1 }, // -z
{ 4, 5, 7, 6 } // +z
};
static int s_pBoxFaceIndicesInsideOut[6][4] =
{
{ 0, 2, 6, 4 }, // -x
{ 5, 7, 3, 1 }, // +x
{ 0, 4, 5, 1 }, // -y
{ 2, 3, 7, 6 }, // +y
{ 0, 1, 3, 2 }, // -z
{ 4, 6, 7, 5 } // +z
};
static void GenerateBoxVertices( const Vector &vOrigin, const QAngle& angles, const Vector &vMins, const Vector &vMaxs, Vector pVerts[8] )
{
// Build a rotation matrix from orientation
matrix3x4_t fRotateMatrix;
AngleMatrix( angles, fRotateMatrix );
Vector vecPos;
for ( int i = 0; i < 8; ++i )
{
vecPos[0] = ( i & 0x1 ) ? vMaxs[0] : vMins[0];
vecPos[1] = ( i & 0x2 ) ? vMaxs[1] : vMins[1];
vecPos[2] = ( i & 0x4 ) ? vMaxs[2] : vMins[2];
VectorRotate( vecPos, fRotateMatrix, pVerts[i] );
pVerts[i] += vOrigin;
}
}
//-----------------------------------------------------------------------------
// Renders a wireframe box relative to an origin
//-----------------------------------------------------------------------------
void RenderWireframeBox( const Vector &vOrigin, const QAngle& angles, const Vector &vMins, const Vector &vMaxs, Color c, bool bZBuffer )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
Vector p[8];
GenerateBoxVertices( vOrigin, angles, vMins, vMaxs, p );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_LINES, 24 );
// Draw the box
for ( int i = 0; i < 6; i++ )
{
int *pFaceIndex = s_pBoxFaceIndices[i];
for ( int j = 0; j < 4; ++j )
{
meshBuilder.Position3fv( p[pFaceIndex[j]].Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( p[pFaceIndex[ (j == 3) ? 0 : j+1 ] ].Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.AdvanceVertex();
}
}
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Renders a solid box
//-----------------------------------------------------------------------------
void RenderBox( const Vector& vOrigin, const QAngle& angles, const Vector& vMins, const Vector& vMaxs, Color c, IMaterial *pMaterial, bool bInsideOut )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->Bind( pMaterial );
Vector p[8];
GenerateBoxVertices( vOrigin, angles, vMins, vMaxs, p );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_TRIANGLES, 12 );
// Draw the box
Vector vecNormal;
for ( int i = 0; i < 6; i++ )
{
vecNormal.Init();
vecNormal[ i/2 ] = ( i & 0x1 ) ? 1.0f : -1.0f;
int *ppFaceIndices = bInsideOut ? s_pBoxFaceIndicesInsideOut[i] : s_pBoxFaceIndices[i];
for ( int j = 1; j < 3; ++j )
{
int i0 = ppFaceIndices[0];
int i1 = ppFaceIndices[j];
int i2 = ppFaceIndices[j+1];
meshBuilder.Position3fv( p[i0].Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( p[i2].Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, 1.0f, ( j == 1 ) ? 1.0f : 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( p[i1].Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, ( j == 1 ) ? 0.0f : 1.0f, 1.0f );
meshBuilder.AdvanceVertex();
}
}
meshBuilder.End();
pMesh->Draw();
}
void RenderBox( const Vector& vOrigin, const QAngle& angles, const Vector& vMins, const Vector& vMaxs, Color c, bool bZBuffer, bool bInsideOut )
{
IMaterial *pMaterial = bZBuffer ? s_pVertexColor : s_pVertexColorIgnoreZ;
Color cActual( c.r(), c.g(), c.b(), c.a() );
RenderBox( vOrigin, angles, vMins, vMaxs, cActual, pMaterial, bInsideOut );
}
//-----------------------------------------------------------------------------
// Renders axes, red->x, green->y, blue->z
//-----------------------------------------------------------------------------
void RenderAxes( const Vector &vOrigin, float flScale, bool bZBuffer )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_LINES, 3 );
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 255, 0, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x + flScale, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 255, 0, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 0, 255, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y + flScale, vOrigin.z );
meshBuilder.Color4ub( 0, 255, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 0, 0, 255, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z + flScale );
meshBuilder.Color4ub( 0, 0, 255, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
void RenderAxes( const matrix3x4_t &transform, float flScale, bool bZBuffer )
{
InitializeStandardMaterials();
Vector xAxis, yAxis, zAxis, vOrigin, temp;
MatrixGetColumn( transform, 0, xAxis );
MatrixGetColumn( transform, 1, yAxis );
MatrixGetColumn( transform, 2, zAxis );
MatrixGetColumn( transform, 3, vOrigin );
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_LINES, 3 );
meshBuilder.Position3fv( vOrigin.Base() );
meshBuilder.Color4ub( 255, 0, 0, 255 );
meshBuilder.AdvanceVertex();
VectorMA( vOrigin, flScale, xAxis, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( 255, 0, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 0, 255, 0, 255 );
meshBuilder.AdvanceVertex();
VectorMA( vOrigin, flScale, yAxis, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( 0, 255, 0, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.Position3f( vOrigin.x, vOrigin.y, vOrigin.z );
meshBuilder.Color4ub( 0, 0, 255, 255 );
meshBuilder.AdvanceVertex();
VectorMA( vOrigin, flScale, zAxis, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( 0, 0, 255, 255 );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Render a line
//-----------------------------------------------------------------------------
void RenderLine( const Vector& v1, const Vector& v2, Color c, bool bZBuffer )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_LINES, 1 );
meshBuilder.Position3fv( v1.Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( v2.Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Draws a triangle
//-----------------------------------------------------------------------------
void RenderTriangle( const Vector& p1, const Vector& p2, const Vector& p3, Color c, IMaterial *pMaterial )
{
InitializeStandardMaterials();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->Bind( pMaterial );
unsigned char chRed = c.r();
unsigned char chGreen = c.g();
unsigned char chBlue = c.b();
unsigned char chAlpha = c.a();
Vector vecNormal;
Vector vecDelta1, vecDelta2;
VectorSubtract( p2, p1, vecDelta1 );
VectorSubtract( p3, p1, vecDelta2 );
CrossProduct( vecDelta1, vecDelta2, vecNormal );
VectorNormalize( vecNormal );
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_TRIANGLES, 1 );
meshBuilder.Position3fv( p1.Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( p2.Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, 0.0f, 1.0f );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( p3.Base() );
meshBuilder.Color4ub( chRed, chGreen, chBlue, chAlpha );
meshBuilder.Normal3fv( vecNormal.Base() );
meshBuilder.TexCoord2f( 0, 1.0f, 0.0f );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
void RenderTriangle( const Vector& p1, const Vector& p2, const Vector& p3, Color c, bool bZBuffer )
{
IMaterial *pMaterial = bZBuffer ? s_pVertexColor : s_pVertexColorIgnoreZ;
Color cActual( c.r(), c.g(), c.b(), c.a() );
RenderTriangle( p1, p2, p3, cActual, pMaterial );
}
//-----------------------------------------------------------------------------
// Renders an extruded box
//-----------------------------------------------------------------------------
static void DrawAxes( const Vector& origin, Vector* pts, int idx, Color c, CMeshBuilder& meshBuilder )
{
Vector start, temp;
VectorAdd( pts[idx], origin, start );
meshBuilder.Position3fv( start.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
int endidx = (idx & 0x1) ? idx - 1 : idx + 1;
VectorAdd( pts[endidx], origin, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( start.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
endidx = (idx & 0x2) ? idx - 2 : idx + 2;
VectorAdd( pts[endidx], origin, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( start.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
endidx = (idx & 0x4) ? idx - 4 : idx + 4;
VectorAdd( pts[endidx], origin, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
}
static void DrawExtrusionFace( const Vector& start, const Vector& end,
Vector* pts, int idx1, int idx2, Color c, CMeshBuilder& meshBuilder )
{
Vector temp;
VectorAdd( pts[idx1], start, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
VectorAdd( pts[idx2], start, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
VectorAdd( pts[idx2], end, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
VectorAdd( pts[idx1], end, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
VectorAdd( pts[idx1], start, temp );
meshBuilder.Position3fv( temp.Base() );
meshBuilder.Color4ub( c.r(), c.g(), c.b(), c.a() );
meshBuilder.AdvanceVertex();
}
void RenderWireframeSweptBox( const Vector &vStart, const Vector &vEnd, const QAngle &angles, const Vector &vMins, const Vector &vMaxs, Color c, bool bZBuffer )
{
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
pRenderContext->Bind( bZBuffer ? s_pWireframe : s_pWireframeIgnoreZ );
Color cActual( c.r(), c.g(), c.b(), c.a() );
// Build a rotation matrix from angles
matrix3x4_t fRotateMatrix;
AngleMatrix( angles, fRotateMatrix );
IMesh *pMesh = pRenderContext->GetDynamicMesh( );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_LINES, 30 );
Vector vDelta;
VectorSubtract( vEnd, vStart, vDelta );
// Compute the box points, rotated but without the origin added
Vector temp;
Vector pts[8];
float dot[8];
int minidx = 0;
for ( int i = 0; i < 8; ++i )
{
temp.x = (i & 0x1) ? vMaxs[0] : vMins[0];
temp.y = (i & 0x2) ? vMaxs[1] : vMins[1];
temp.z = (i & 0x4) ? vMaxs[2] : vMins[2];
// Rotate the corner point
VectorRotate( temp, fRotateMatrix, pts[i] );
// Find the dot product with dir
dot[i] = DotProduct( pts[i], vDelta );
if ( dot[i] < dot[minidx] )
{
minidx = i;
}
}
// Choose opposite corner
int maxidx = minidx ^ 0x7;
// Draw the start + end axes...
DrawAxes( vStart, pts, minidx, cActual, meshBuilder );
DrawAxes( vEnd, pts, maxidx, cActual, meshBuilder );
// Draw the extrusion faces
for (int j = 0; j < 3; ++j )
{
int dirflag1 = ( 1 << ((j+1)%3) );
int dirflag2 = ( 1 << ((j+2)%3) );
int idx1, idx2, idx3;
idx1 = (minidx & dirflag1) ? minidx - dirflag1 : minidx + dirflag1;
idx2 = (minidx & dirflag2) ? minidx - dirflag2 : minidx + dirflag2;
idx3 = (minidx & dirflag2) ? idx1 - dirflag2 : idx1 + dirflag2;
DrawExtrusionFace( vStart, vEnd, pts, idx1, idx3, cActual, meshBuilder );
DrawExtrusionFace( vStart, vEnd, pts, idx2, idx3, cActual, meshBuilder );
}
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Draws a axis-aligned quad
//-----------------------------------------------------------------------------
void RenderQuad( IMaterial *pMaterial, float x, float y, float w, float h,
float z, float s0, float t0, float s1, float t1, const Color& clr )
{
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
IMesh *pMesh = pRenderContext->GetDynamicMesh( true, NULL, NULL, pMaterial );
CMeshBuilder meshBuilder;
meshBuilder.Begin( pMesh, MATERIAL_QUADS, 1 );
meshBuilder.Color4ub( clr.r(), clr.g(), clr.b(), clr.a());
meshBuilder.TexCoord2f( 0, s0, t0 );
meshBuilder.Position3f( x, y, z );
meshBuilder.AdvanceVertex();
meshBuilder.Color4ub( clr.r(), clr.g(), clr.b(), clr.a());
meshBuilder.TexCoord2f( 0, s1, t0 );
meshBuilder.Position3f( x + w, y, z );
meshBuilder.AdvanceVertex();
meshBuilder.Color4ub( clr.r(), clr.g(), clr.b(), clr.a());
meshBuilder.TexCoord2f( 0, s1, t1 );
meshBuilder.Position3f( x + w, y + h, z );
meshBuilder.AdvanceVertex();
meshBuilder.Color4ub( clr.r(), clr.g(), clr.b(), clr.a());
meshBuilder.TexCoord2f( 0, s0, t1 );
meshBuilder.Position3f( x, y + h, z );
meshBuilder.AdvanceVertex();
meshBuilder.End();
pMesh->Draw();
}
//-----------------------------------------------------------------------------
// Renders a screen space quad
//-----------------------------------------------------------------------------
void DrawScreenSpaceRectangle( IMaterial *pMaterial,
int nDestX, int nDestY, int nWidth, int nHeight, // Rect to draw into in screen space
float flSrcTextureX0, float flSrcTextureY0, // which texel you want to appear at destx/y
float flSrcTextureX1, float flSrcTextureY1, // which texel you want to appear at destx+width-1, desty+height-1
int nSrcTextureWidth, int nSrcTextureHeight, // needed for fixup
void *pClientRenderable, // Used to pass to the bind proxies
int nXDice, int nYDice, // Amount to tessellate the mesh
float fDepth ) // what Z value to put in the verts (def 0.0)
{
CMatRenderContextPtr pRenderContext( g_pMaterialSystem );
if ( ( nWidth <= 0 ) || ( nHeight <= 0 ) )
return;
tmZone( TELEMETRY_LEVEL1, TMZF_NONE, "%s", __FUNCTION__ );
pRenderContext->MatrixMode( MATERIAL_VIEW );
pRenderContext->PushMatrix();
pRenderContext->LoadIdentity();
pRenderContext->MatrixMode( MATERIAL_PROJECTION );
pRenderContext->PushMatrix();
pRenderContext->LoadIdentity();
pRenderContext->Bind( pMaterial, pClientRenderable );
int xSegments = max( nXDice, 1);
int ySegments = max( nYDice, 1);
CMeshBuilder meshBuilder;
IMesh* pMesh = pRenderContext->GetDynamicMesh( true );
meshBuilder.Begin( pMesh, MATERIAL_QUADS, xSegments * ySegments );
int nScreenWidth, nScreenHeight;
pRenderContext->GetRenderTargetDimensions( nScreenWidth, nScreenHeight );
float flOffset = 0.5f;
float flLeftX = nDestX - flOffset;
float flRightX = nDestX + nWidth - flOffset;
float flTopY = nDestY - flOffset;
float flBottomY = nDestY + nHeight - flOffset;
float flSubrectWidth = flSrcTextureX1 - flSrcTextureX0;
float flSubrectHeight = flSrcTextureY1 - flSrcTextureY0;
float flTexelsPerPixelX = ( nWidth > 1 ) ? flSubrectWidth / ( nWidth - 1 ) : 0.0f;
float flTexelsPerPixelY = ( nHeight > 1 ) ? flSubrectHeight / ( nHeight - 1 ) : 0.0f;
float flLeftU = flSrcTextureX0 + 0.5f - ( 0.5f * flTexelsPerPixelX );
float flRightU = flSrcTextureX1 + 0.5f + ( 0.5f * flTexelsPerPixelX );
float flTopV = flSrcTextureY0 + 0.5f - ( 0.5f * flTexelsPerPixelY );
float flBottomV = flSrcTextureY1 + 0.5f + ( 0.5f * flTexelsPerPixelY );
float flOOTexWidth = 1.0f / nSrcTextureWidth;
float flOOTexHeight = 1.0f / nSrcTextureHeight;
flLeftU *= flOOTexWidth;
flRightU *= flOOTexWidth;
flTopV *= flOOTexHeight;
flBottomV *= flOOTexHeight;
// Get the current viewport size
int vx, vy, vw, vh;
pRenderContext->GetViewport( vx, vy, vw, vh );
// map from screen pixel coords to -1..1
flRightX = FLerp( -1, 1, 0, vw, flRightX );
flLeftX = FLerp( -1, 1, 0, vw, flLeftX );
flTopY = FLerp( 1, -1, 0, vh ,flTopY );
flBottomY = FLerp( 1, -1, 0, vh, flBottomY );
// Dice the quad up...
if ( ( xSegments > 1 ) || ( ySegments > 1 ) )
{
// Screen height and width of a subrect
float flWidth = (flRightX - flLeftX) / (float) xSegments;
float flHeight = (flTopY - flBottomY) / (float) ySegments;
// UV height and width of a subrect
float flUWidth = (flRightU - flLeftU) / (float) xSegments;
float flVHeight = (flBottomV - flTopV) / (float) ySegments;
for ( int x=0; x < xSegments; x++ )
{
for ( int y=0; y < ySegments; y++ )
{
// Top left
meshBuilder.Position3f( flLeftX + (float) x * flWidth, flTopY - (float) y * flHeight, fDepth );
meshBuilder.Normal3f( 0.0f, 0.0f, 1.0f );
meshBuilder.TexCoord2f( 0, flLeftU + (float) x * flUWidth, flTopV + (float) y * flVHeight);
meshBuilder.TangentS3f( 0.0f, 1.0f, 0.0f );
meshBuilder.TangentT3f( 1.0f, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
// Top right (x+1)
meshBuilder.Position3f( flLeftX + (float) (x+1) * flWidth, flTopY - (float) y * flHeight, fDepth );
meshBuilder.Normal3f( 0.0f, 0.0f, 1.0f );
meshBuilder.TexCoord2f( 0, flLeftU + (float) (x+1) * flUWidth, flTopV + (float) y * flVHeight);
meshBuilder.TangentS3f( 0.0f, 1.0f, 0.0f );
meshBuilder.TangentT3f( 1.0f, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
// Bottom right (x+1), (y+1)
meshBuilder.Position3f( flLeftX + (float) (x+1) * flWidth, flTopY - (float) (y+1) * flHeight, fDepth );
meshBuilder.Normal3f( 0.0f, 0.0f, 1.0f );
meshBuilder.TexCoord2f( 0, flLeftU + (float) (x+1) * flUWidth, flTopV + (float)(y+1) * flVHeight);
meshBuilder.TangentS3f( 0.0f, 1.0f, 0.0f );
meshBuilder.TangentT3f( 1.0f, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
// Bottom left (y+1)
meshBuilder.Position3f( flLeftX + (float) x * flWidth, flTopY - (float) (y+1) * flHeight, fDepth );
meshBuilder.Normal3f( 0.0f, 0.0f, 1.0f );
meshBuilder.TexCoord2f( 0, flLeftU + (float) x * flUWidth, flTopV + (float)(y+1) * flVHeight);
meshBuilder.TangentS3f( 0.0f, 1.0f, 0.0f );
meshBuilder.TangentT3f( 1.0f, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
}
}
}
else // just one quad
{
for ( int corner=0; corner<4; corner++ )
{
bool bLeft = (corner==0) || (corner==3);
meshBuilder.Position3f( (bLeft) ? flLeftX : flRightX, (corner & 2) ? flBottomY : flTopY, fDepth );
meshBuilder.Normal3f( 0.0f, 0.0f, 1.0f );
meshBuilder.TexCoord2f( 0, (bLeft) ? flLeftU : flRightU, (corner & 2) ? flBottomV : flTopV );
meshBuilder.TangentS3f( 0.0f, 1.0f, 0.0f );
meshBuilder.TangentT3f( 1.0f, 0.0f, 0.0f );
meshBuilder.AdvanceVertex();
}
}
meshBuilder.End();
pMesh->Draw();
pRenderContext->MatrixMode( MATERIAL_VIEW );
pRenderContext->PopMatrix();
pRenderContext->MatrixMode( MATERIAL_PROJECTION );
pRenderContext->PopMatrix();
}