private void OnPostRender()
{
Camera cam = Camera.current;
//调整屏幕大小以满足超采样
if (screenHeight != cam.pixelHeight * superSample || screenWidth != cam.pixelWidth * superSample)
{
screenHeight = (int)(cam.pixelHeight * superSample);
screenWidth = (int)(cam.pixelWidth * superSample);
ReSize(cameraTarget, screenWidth, screenHeight);
ReSize(depthTexture, screenWidth, screenHeight);
foreach (var i in GBufferTextures)
{
ReSize(i, screenWidth, screenHeight);
}
for (int i = 0; i < GBuffers.Length; i++)
{
GBuffers[i] = GBufferTextures[i].colorBuffer;
}
}
Shader.SetGlobalTexture(_DepthTexture, depthTexture);
//计算每帧的投影矩阵，依靠投影矩阵计算视锥裁面
Matrix4x4 proj = GL.GetGPUProjectionMatrix(cam.projectionMatrix, false);
Matrix4x4 vp = proj * cam.worldToCameraMatrix;
Matrix4x4 invvp = vp.inverse;
Shader.SetGlobalMatrix(_InvVP, invvp);
CullMesh.UpdateFrame(cam, ref invvp, transform.position);
SortMesh.UpdateFrame();
JobHandle cullHandle = CullMesh.Schedule();
JobHandle sortHandle = SortMesh.Schedule(cullHandle);
JobHandle.ScheduleBatchedJobs();//使用Job System的调用在分线程中完成剔除和排序
for (int i = 0; i < gbufferIDs.Length; i++)
{
Shader.SetGlobalTexture(gbufferIDs[i], GBufferTextures[i]);
}
Graphics.SetRenderTarget(GBuffers, depthTexture.depthBuffer);
GL.Clear(true, true, Color.black);
//start draw call
deferredMaterial.SetPass(0);
sortHandle.Complete();
for (int i = 0; i < SortMesh.sortObj.Length; i++)//遍历每个obj的Mesh进行输出
{
DrawElements(ref SortMesh.sortObj[i]);
}
lighting.DrawLight(GBufferTextures, gbufferIDs, cameraTarget, cam);
skyDraw.SkyBoxDraw(cam, cameraTarget.colorBuffer, depthTexture.depthBuffer);
//end draw call
Graphics.Blit(cameraTarget, cam.targetTexture);
}
private void OnPostRender()
{
Camera cam = Camera.current;
if (screenHeight != cam.pixelHeight * superSample || screenWidth != cam.pixelWidth * superSample)
{
screenHeight = (int)(cam.pixelHeight * superSample);
screenWidth = (int)(cam.pixelWidth * superSample);
ReSize(cameraTarget, screenWidth, screenHeight);
ReSize(depthTexture, screenWidth, screenHeight);
foreach (var i in GBufferTextures)
{
ReSize(i, screenWidth, screenHeight);
}
for (int i = 0; i < GBuffers.Length; ++i)
{
GBuffers[i] = GBufferTextures[i].colorBuffer;
}
}
Shader.SetGlobalTexture(_DepthTexture, depthTexture);
Matrix4x4 proj = GL.GetGPUProjectionMatrix(cam.projectionMatrix, false);
Matrix4x4 vp = proj * cam.worldToCameraMatrix;
Matrix4x4 invvp = vp.inverse;
Shader.SetGlobalMatrix(_InvVP, invvp);
CullMesh.UpdateFrame(cam, ref invvp, transform.position);
SortMesh.UpdateFrame();
JobHandle cullhandle = CullMesh.Schedule();
JobHandle sortHandle = SortMesh.Schedule(cullhandle);
JobHandle.ScheduleBatchedJobs();
for (int i = 0; i < gbufferIDs.Length; ++i)
{
Shader.SetGlobalTexture(gbufferIDs[i], GBufferTextures[i]);
}
Graphics.SetRenderTarget(GBuffers, depthTexture.depthBuffer);
GL.Clear(true, true, Color.black);
//Start Draw Mesh
deferredMaterial.SetPass(0);
sortHandle.Complete();
for (int i = 0; i < SortMesh.sorts.Length; ++i)
{
DrawElements(ref SortMesh.sorts[i]);
}
lighting.DrawLight(GBufferTextures, gbufferIDs, cameraTarget, cam);
//End Deferred Lighting
skyDraw.DrawSkybox(cam, cameraTarget.colorBuffer, depthTexture.depthBuffer);
Graphics.Blit(cameraTarget, cam.targetTexture);
}