1 files changed, 173 insertions, 0 deletions
diff --git a/Runtime/Graphics/DrawUtil.cpp b/Runtime/Graphics/DrawUtil.cpp
new file mode 100644
index 0000000..4c17fe8
--- /dev/null
+++ b/Runtime/Graphics/DrawUtil.cpp
@@ -0,0 +1,173 @@
+#include "UnityPrefix.h"
+#include "DrawUtil.h"
+#include "Runtime/Math/Vector3.h"
+#include "Runtime/Math/Quaternion.h"
+#include "Runtime/Math/Matrix4x4.h"
+#include "Runtime/Shaders/VBO.h"
+#include "Runtime/GfxDevice/GfxDevice.h"
+#include "Runtime/Filters/Mesh/LodMesh.h"
+#include "Runtime/GfxDevice/ChannelAssigns.h"
+#include "Runtime/Camera/Camera.h"
+#include "Runtime/Camera/RenderManager.h"
+#include "Transform.h"
+#include "Runtime/GfxDevice/GfxDevice.h"
+#include "Runtime/GfxDevice/GfxDeviceStats.h"
+#include "Runtime/GfxDevice/BatchRendering.h"
+#include "Runtime/Camera/Renderqueue.h"
+#include "Runtime/Profiler/Profiler.h"
+#include "Runtime/Shaders/ComputeShader.h"
+#include "Runtime/Graphics/SpriteFrame.h"
+#if UNITY_PS3
+#	include "Runtime/GfxDevice/ps3/GfxGCMVBO.h"
+#endif
+
+PROFILER_INFORMATION(gDrawMeshVBOProfile, "Mesh.DrawVBO", kProfilerRender)
+PROFILER_INFORMATION(gDrawMeshNullProfile, "Graphics.DrawProcedural", kProfilerRender)
+
+static void DrawMeshInternal (const ChannelAssigns& channels, Mesh &mesh, const Matrix4x4f &matrix, int subsetIndex, TransformType transformType);
+
+void DrawUtil::DrawVBOMeshRaw (VBO& vbo, Mesh& mesh, const ChannelAssigns& channels, int subsetIndex, UInt32 channelsInVBO)
+{
+	PROFILER_AUTO(gDrawMeshVBOProfile, &mesh)
+
+	subsetIndex = std::min<unsigned int>(subsetIndex, mesh.GetSubMeshCount()? mesh.GetSubMeshCount()-1:0);
+	SubMesh& submesh = mesh.GetSubMeshFast(subsetIndex);
+	
+	int firstVertex, vertexCount;
+
+	firstVertex = submesh.firstVertex;
+	vertexCount = submesh.vertexCount;
+#if UNITY_PS3
+	GfxGCMVBO& gcmVBO = (GfxGCMVBO&)vbo;
+	gcmVBO.DrawSubmesh(channels, subsetIndex, &submesh);
+#else
+	vbo.DrawVBO (channels, submesh.firstByte, submesh.indexCount, submesh.topology, firstVertex, vertexCount);
+#endif
+	GPU_TIMESTAMP();
+}
+
+void DrawUtil::DrawMeshRaw (const ChannelAssigns& channels, Mesh& mesh, int subsetIndex)
+{
+	VBO* vbo = mesh.GetSharedVBO (channels.GetSourceMap());
+	if( vbo != NULL )
+	{
+		DrawVBOMeshRaw (*vbo, mesh, channels, subsetIndex);
+	}
+}
+
+void DrawUtil::DrawMesh (const ChannelAssigns& channels, Mesh &mesh, const Vector3f &position, const Quaternionf &rotation, int subsetIndex)
+{
+	Matrix4x4f matrix;
+	QuaternionToMatrix (rotation, matrix);
+	matrix.SetPosition( position );
+
+	TransformType transformType = kNoScaleTransform;
+	DrawMeshInternal (channels, mesh, matrix, subsetIndex, transformType);
+}
+
+void DrawUtil::DrawMesh (const ChannelAssigns& channels, Mesh &mesh, const Matrix4x4f &matrix, int subsetIndex)
+	{
+	// just assume it is a scaled transform, but don't handle negative scales... oh well! (says @aras_p)
+	TransformType transformType = kUniformScaleTransform;
+	DrawMeshInternal (channels, mesh, matrix, subsetIndex, transformType);
+}
+
+static void DrawMeshInternal (const ChannelAssigns& channels, Mesh &mesh, const Matrix4x4f &matrix, int subsetIndex, TransformType transformType)
+{
+	const Camera* camera = GetCurrentCameraPtr();
+
+	GfxDevice& device = GetGfxDevice();
+	float matWorld[16], matView[16];
+
+	CopyMatrix(device.GetViewMatrix(), matView);
+	CopyMatrix(device.GetWorldMatrix(), matWorld);
+	if (camera)
+		device.SetViewMatrix( camera->GetWorldToCameraMatrix().GetPtr() );
+
+	SetupObjectMatrix (matrix, transformType);
+
+	if (subsetIndex != -1)
+	{
+		DrawUtil::DrawMeshRaw (channels, mesh, subsetIndex);
+	}
+	else
+	{
+		int submeshCount = mesh.GetSubMeshCount();
+		for (int i=0;i<submeshCount;i++)
+			DrawUtil::DrawMeshRaw (channels, mesh, i);
+	}
+
+	device.SetViewMatrix(matView);
+	device.SetWorldMatrix(matWorld);
+}
+
+void DrawUtil::DrawProcedural (GfxPrimitiveType topology, int vertexCount, int instanceCount)
+{
+	if (instanceCount > 1 && !gGraphicsCaps.hasInstancing)
+	{
+		ErrorString ("Can't do instanced Graphics.DrawProcedural");
+		return;
+	}
+
+	PROFILER_AUTO(gDrawMeshNullProfile, NULL)
+
+	GfxDevice& device = GetGfxDevice();
+	device.DrawNullGeometry (topology, vertexCount, instanceCount);
+	device.GetFrameStats().AddDrawCall (vertexCount*instanceCount, vertexCount*instanceCount);
+
+	GPU_TIMESTAMP();
+}
+
+void DrawUtil::DrawProceduralIndirect (GfxPrimitiveType topology, ComputeBuffer* bufferWithArgs, UInt32 argsOffset)
+{
+	if (!gGraphicsCaps.hasInstancing || !gGraphicsCaps.hasComputeShader)
+	{
+		ErrorString ("Can't do indirect Graphics.DrawProcedural");
+		return;
+	}
+	if (!bufferWithArgs)
+	{
+		ErrorString ("Graphics.DrawProcedural with invalid buffer");
+		return;
+	}
+	ComputeBufferID bufferHandle = bufferWithArgs->GetBufferHandle();
+	if (!bufferHandle.IsValid())
+	{
+		ErrorString ("Graphics.DrawProcedural with invalid buffer");
+		return;
+	}
+
+	PROFILER_AUTO(gDrawMeshNullProfile, NULL)
+
+	GfxDevice& device = GetGfxDevice();
+	device.DrawNullGeometryIndirect (topology, bufferHandle, argsOffset);
+	device.GetFrameStats().AddDrawCall (1,1); // unknown primitive count
+
+	GPU_TIMESTAMP();
+}
+
+void DrawUtil::DrawSpriteRaw (const ChannelAssigns& channels, Sprite& sprite, const ColorRGBAf& color)
+{
+	GfxDevice& device = GetGfxDevice();
+
+	const SpriteRenderData& rd = sprite.GetRenderData(false); // Use non-atlased RenderData as input.
+	Assert(rd.texture.IsValid());
+
+	// Get VBO chunk for a rectangle or mesh
+	UInt32 numIndices = rd.indices.size();
+	UInt32 numVertices = rd.vertices.size();
+	if (!numIndices)
+		return;
+
+	const UInt32 channelMask = (1<<kShaderChannelVertex) | (1<<kShaderChannelTexCoord0) | (1<<kShaderChannelColor);
+
+	DynamicVBO& vbo = device.GetDynamicVBO();
+	UInt8*  __restrict vbPtr;
+	UInt16* __restrict ibPtr;
+	if ( !vbo.GetChunk(channelMask, numVertices, numIndices, DynamicVBO::kDrawIndexedTriangles, (void**)&vbPtr, (void**)&ibPtr) )
+		return;
+
+	TransformSprite (vbPtr, ibPtr, NULL, &rd, device.ConvertToDeviceVertexColor(color), 0);
+	vbo.ReleaseChunk(numVertices, numIndices);
+	vbo.DrawChunk(channels);
+}