public void SetBlendOption(FluidBlendOption.BlendOption blendoption)
{
if (blend.GetBlendOption() != blendoption)
{
blend.SetBlendOption(blendoption);
blend.Porcess(material);
}
}
RenderTexture Render(RenderTexture target)
{
if (target == null)
{
return(null);
}
if (bloom_enabled)
{
ApplyBloom(density_dfbo.GetReadFBO(), bloom_fbo);
}
blendOption = FluidBlendOption.BlendOption.Enable_One_OMSA;
int width = target.width;
int height = target.height;
if (transparent_enable)
{
backgroundProgram.SetFloat("_aspectRatio", (float)width / (float)height);
backgroundProgram.Blit(target, target, blendOption);
}
else
{
colorProgram.SetColor("_color", BACK_COLOR);
colorProgram.Blit(target, target, blendOption);
}
if (shading_enable)
{
FluidProgram program = bloom_enabled ? displayBloomShadingProgram : displayShadingProgram;
program.SetFloat("_texelSize_x", 1.0f / simWidth);
program.SetFloat("_texelSize_y", 1.0f / simHeight);
program.SetTexture("_uTexture", density_dfbo.GetReadFBO());
if (bloom_enabled)
{
program.SetTexture("_Bloom", bloom_fbo);
program.SetTexture("_Dithering", ditheringTexture);
Vector2 scale = GetTextureScale(ditheringTexture, width, height);
program.SetFloat("_ditherScale_x", scale.x);
program.SetFloat("_ditherScale_y", scale.y);
}
program.Blit(target, target, blendOption);
}
else
{
FluidProgram program = bloom_enabled ? displayBloomProgram : displayProgram;
program.SetTexture("_uTexture", density_dfbo.GetReadFBO());
if (bloom_enabled)
{
program.SetTexture("_Bloom", bloom_fbo);
program.SetTexture("_Dithering", ditheringTexture);
Vector2 scale = GetTextureScale(ditheringTexture, width, height);
program.SetFloat("_ditherScale_x", scale.x);
program.SetFloat("_ditherScale_y", scale.y);
}
program.Blit(target, target, blendOption);
}
return(target);
}
RenderTexture ApplyBloom(RenderTexture source, RenderTexture destination)
{
if (bloomFramebuffers.Count < 2)
{
Debug.Log("ApplyBloom return frameid:" + frameid);
return(destination);
}
RenderTexture last = destination;
blendOption = FluidBlendOption.BlendOption.Disable;
float knee = bloom_threshold * BLOOM_SOFT_KNEE + 0.0001f;
float curve0 = bloom_threshold - knee;
float curve1 = knee * 2;
float curve2 = 0.25f / knee;
bloomPrefilterProgram.SetFloat("_curve_x", curve0);
bloomPrefilterProgram.SetFloat("_curve_y", curve1);
bloomPrefilterProgram.SetFloat("_curve_z", curve2);
bloomPrefilterProgram.SetFloat("_threshold", bloom_threshold);
bloomPrefilterProgram.SetTexture("_uTexture", source);
bloomPrefilterProgram.Blit(last, last, blendOption);
for (int i = 0; i < bloomFramebuffers.Count; i++)
{
RenderTexture dest = bloomFramebuffers[i];
bloomBlurProgram.SetTexture("_uTexture", last);
bloomBlurProgram.SetFloat("_texelSize_x", 1.0f / last.width);
bloomBlurProgram.SetFloat("_texelSize_y", 1.0f / last.height);
bloomBlurProgram.Blit(dest, dest, blendOption);
last = dest;
}
blendOption = FluidBlendOption.BlendOption.Enable_One_One;
for (int i = bloomFramebuffers.Count - 2; i >= 0; i--)
{
RenderTexture baseTex = bloomFramebuffers[i];
bloomBlurProgram.SetTexture("_uTexture", last);
bloomBlurProgram.SetFloat("_texelSize_x", 1.0f / last.width);
bloomBlurProgram.SetFloat("_texelSize_y", 1.0f / last.height);
bloomBlurProgram.Blit(baseTex, baseTex, blendOption);
last = baseTex;
}
blendOption = FluidBlendOption.BlendOption.Disable;
bloomFinalProgram.SetFloat("_texelSize_x", 1.0f / last.width);
bloomFinalProgram.SetFloat("_texelSize_y", 1.0f / last.height);
bloomFinalProgram.SetTexture("_uTexture", last);
bloomFinalProgram.SetFloat("_intensity", bloom_intensity);
bloomFinalProgram.Blit(destination, destination, blendOption);
return(destination);
}
void Step(float dt)
{
blendOption = FluidBlendOption.BlendOption.Disable;
curlProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
curlProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
curlProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
curlProgram.Blit(curl_fbo, curl_fbo, blendOption);
vorticityProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
vorticityProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
vorticityProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
vorticityProgram.SetTexture("_Curl", curl_fbo);
vorticityProgram.SetFloat("_curl", CURL);
vorticityProgram.SetFloat("_dt", dt);
vorticityProgram.Blit(velocity_dfbo.GetWriteFBO(), velocity_dfbo.GetWriteFBO(), blendOption);
velocity_dfbo.Swap();
divergenceProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
divergenceProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
divergenceProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
divergenceProgram.Blit(divergence_fbo, divergence_fbo, blendOption);
clearProgram.SetTexture("_uTexture", pressure_dfbo.GetReadFBO());
clearProgram.SetFloat("_value", PRESSURE_DISSIPATION);
clearProgram.Blit(pressure_dfbo.GetWriteFBO(), pressure_dfbo.GetWriteFBO(), blendOption);
pressure_dfbo.Swap();
pressureProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
pressureProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
pressureProgram.SetTexture("_Divergence", divergence_fbo);
for (int i = 0; i < PRESSURE_ITERATIONS; i++)
{
pressureProgram.SetTexture("_Pressure", pressure_dfbo.GetReadFBO());
pressureProgram.Blit(pressure_dfbo.GetWriteFBO(), pressure_dfbo.GetWriteFBO(), blendOption);
pressure_dfbo.Swap();
}
gradienSubtractProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
gradienSubtractProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
gradienSubtractProgram.SetTexture("_Pressure", pressure_dfbo.GetReadFBO());
gradienSubtractProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
gradienSubtractProgram.Blit(velocity_dfbo.GetWriteFBO(), velocity_dfbo.GetWriteFBO(), blendOption);
velocity_dfbo.Swap();
advectionProgram.SetFloat("_texelSize_x", 1.0f / simWidth);
advectionProgram.SetFloat("_texelSize_y", 1.0f / simHeight);
if (!supportLinearFiltering)
{
advectionProgram.SetFloat("_dyeTexelSize_x", 1.0f / simWidth);
advectionProgram.SetFloat("_dyeTexelSize_y", 1.0f / simHeight);
}
advectionProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
advectionProgram.SetTexture("_Source", velocity_dfbo.GetReadFBO());
advectionProgram.SetFloat("_dt", dt);
advectionProgram.SetFloat("_dissipation", VELOCITY_DISSIPATION);
advectionProgram.Blit(velocity_dfbo.GetWriteFBO(), velocity_dfbo.GetWriteFBO(), blendOption);
velocity_dfbo.Swap();
if (!supportLinearFiltering)
{
advectionProgram.SetFloat("_dyeTexelSize_x", 1.0f / dyeWidth);
advectionProgram.SetFloat("_dyeTexelSize_y", 1.0f / dyeHeight);
}
advectionProgram.SetTexture("_Velocity", velocity_dfbo.GetReadFBO());
advectionProgram.SetTexture("_Source", density_dfbo.GetReadFBO());
advectionProgram.SetFloat("_dissipation", DENSITY_DISSIPATION);
advectionProgram.Blit(density_dfbo.GetWriteFBO(), density_dfbo.GetWriteFBO(), blendOption);
density_dfbo.Swap();
}
public void Blit(RenderTexture source, RenderTexture destination, FluidBlendOption.BlendOption blendoption)
{
SetBlendOption(blendoption);
Graphics.Blit(source, destination, material);
}