void BatchRenderer::DrawSolidTriangle3D(
const Vec3D& a, const Vec3D& b, const Vec3D& c,
const FColor& color
)
{
const U4 rgbaColor = color.ToRGBA32();
SetBatchState( this, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST );
const UINT iBaseVertex = self->batchedVertices.Num();
Vertex & v0 = self->batchedVertices.Add();
Vertex & v1 = self->batchedVertices.Add();
Vertex & v2 = self->batchedVertices.Add();
v0.xyz.x = a.x;
v0.xyz.y = a.y;
v0.xyz.z = a.z;
v0.rgba.asU32 = rgbaColor;
v1.xyz.x = b.x;
v1.xyz.y = b.y;
v1.xyz.z = b.z;
v1.rgba.asU32 = rgbaColor;
v2.xyz.x = c.x;
v2.xyz.y = c.y;
v2.xyz.z = c.z;
v2.rgba.asU32 = rgbaColor;
self->batchedIndices.Add( iBaseVertex + 0 );
self->batchedIndices.Add( iBaseVertex + 1 );
self->batchedIndices.Add( iBaseVertex + 2 );
}
void BatchRenderer::DrawSprite(
const Matrix4& cameraWorldMatrix,
const Vec3D& spriteOrigin,
const FLOAT spriteSizeX, const FLOAT spriteSizeY,
const FColor& color
)
{
const Vec3D spriteX = cameraWorldMatrix[0].ToVec3() * spriteSizeX;
const Vec3D spriteY = cameraWorldMatrix[1].ToVec3() * spriteSizeY;
const U4 rgbaColor = color.ToRGBA32();
SetBatchState( this, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST );
const UINT iBaseVertex = self->batchedVertices.Num();
Vertex & v0 = self->batchedVertices.Add();
Vertex & v1 = self->batchedVertices.Add();
Vertex & v2 = self->batchedVertices.Add();
Vertex & v3 = self->batchedVertices.Add();
v0.xyz = spriteOrigin - spriteX - spriteY; // bottom left
v0.uv.x = 0.0f;
v0.uv.y = 1.0f;
v0.rgba.asU32 = rgbaColor;
v1.xyz = spriteOrigin - spriteX + spriteY; // top left
v1.uv.x = 0.0f;
v1.uv.y = 0.0f;
v1.rgba.asU32 = rgbaColor;
v2.xyz = spriteOrigin + spriteX + spriteY; // top right
v2.uv.x = 1.0f;
v2.uv.y = 0.0f;
v2.rgba.asU32 = rgbaColor;
v3.xyz = spriteOrigin + spriteX - spriteY; // bottom right
v3.uv.x = 1.0f;
v3.uv.y = 1.0f;
v3.rgba.asU32 = rgbaColor;
// indices:
// 0, 1, 2,
// 0, 2, 3,
self->batchedIndices.Add( iBaseVertex + 0 );
self->batchedIndices.Add( iBaseVertex + 1 );
self->batchedIndices.Add( iBaseVertex + 2 );
self->batchedIndices.Add( iBaseVertex + 0 );
self->batchedIndices.Add( iBaseVertex + 2 );
self->batchedIndices.Add( iBaseVertex + 3 );
}
void BatchRenderer::DrawTriangle3D(
const Vec3D& a, const Vec3D& b, const Vec3D& c,
const FColor& color
)
{
#if 0
DrawLine3D( a, b, color, color );
DrawLine3D( b, c, color, color );
DrawLine3D( c, a, color, color );
#else
SetBatchState( this, D3D11_PRIMITIVE_TOPOLOGY_LINESTRIP );
Vertex & v0 = self->batchedVertices.Add();
Vertex & v1 = self->batchedVertices.Add();
Vertex & v2 = self->batchedVertices.Add();
Vertex & v3 = self->batchedVertices.Add();
v0.xyz.x = a.x;
v0.xyz.y = a.y;
v0.xyz.z = a.z;
v0.rgba.asU32 = color.ToRGBA32();
v1.xyz.x = b.x;
v1.xyz.y = b.y;
v1.xyz.z = b.z;
v1.rgba.asU32 = color.ToRGBA32();
v2.xyz.x = c.x;
v2.xyz.y = c.y;
v2.xyz.z = c.z;
v2.rgba.asU32 = color.ToRGBA32();
v3.xyz.x = a.x;
v3.xyz.y = a.y;
v3.xyz.z = a.z;
v3.rgba.asU32 = color.ToRGBA32();
#endif
}
FORCEINLINE R8G8B8A8 FColor_to_RGBA32( const FColor& theColor )
{
R8G8B8A8 rgba;
rgba.asU32 = theColor.ToRGBA32();
return rgba;
}
