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Fidling around with aa

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This commit is contained in:
Sam Gateau 2017-08-06 23:08:06 -07:00
parent 1c8332d85d
commit f3a6729940
3 changed files with 40 additions and 8 deletions
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17
libraries/render-utils/src/AntialiasingEffect.cpp
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@ -211,7 +211,8 @@ const gpu::PipelinePointer& Antialiasing::getAntialiasingPipeline() {
gpu::ShaderPointer program = gpu::Shader::createProgram(vs, ps);
gpu::Shader::BindingSet slotBindings;
slotBindings.insert(gpu::Shader::Binding(std::string("colorTexture"), 0));
slotBindings.insert(gpu::Shader::Binding(std::string("historyTexture"), 0));
slotBindings.insert(gpu::Shader::Binding(std::string("colorTexture"), 1));
gpu::Shader::makeProgram(*program, slotBindings);
@ -220,10 +221,7 @@ const gpu::PipelinePointer& Antialiasing::getAntialiasingPipeline() {
gpu::StatePointer state = gpu::StatePointer(new gpu::State());
PrepareStencil::testMask(*state);
// state->setDepthTest(false, false, gpu::LESS_EQUAL);
state->setBlendFunction(true, gpu::State::BlendArg::SRC_ALPHA, gpu::State::BlendOp::BLEND_OP_ADD, gpu::State::BlendArg::INV_SRC_ALPHA );
// Good to go add the brand new pipeline
_antialiasingPipeline = gpu::Pipeline::create(program, state);
}
@ -245,6 +243,8 @@ const gpu::PipelinePointer& Antialiasing::getBlendPipeline() {
gpu::StatePointer state = gpu::StatePointer(new gpu::State());
PrepareStencil::testMask(*state);
state->setBlendFunction(true, gpu::State::BlendArg::SRC_ALPHA, gpu::State::BlendOp::BLEND_OP_ADD, gpu::State::BlendArg::INV_SRC_ALPHA );
// Good to go add the brand new pipeline
_blendPipeline = gpu::Pipeline::create(program, state);
}
@ -262,13 +262,16 @@ void Antialiasing::run(const render::RenderContextPointer& renderContext, const
batch.setViewportTransform(args->_viewport);
// TAA step
batch.setResourceTexture(0, sourceBuffer->getRenderBuffer(0));
getAntialiasingPipeline();
batch.setResourceTexture(0, _antialiasingTexture);
batch.setResourceTexture(1, sourceBuffer->getRenderBuffer(0));
batch.setFramebuffer(_antialiasingBuffer);
batch.setPipeline(getAntialiasingPipeline());
batch.draw(gpu::TRIANGLE_STRIP, 4);
// Blend step
batch.setResourceTexture(0, _antialiasingTexture);
// batch.setResourceTexture(0, _antialiasingTexture);
batch.setResourceTexture(1, nullptr);
batch.setFramebuffer(sourceBuffer);
batch.setPipeline(getBlendPipeline());
batch.draw(gpu::TRIANGLE_STRIP, 4);

28
libraries/render-utils/src/fxaa.slf
View file

@ -23,13 +23,39 @@ precision mediump int;
#endif
uniform sampler2D colorTexture;
uniform sampler2D historyTexture;
uniform vec2 texcoordOffset;
in vec2 varTexCoord0;
out vec4 outFragColor;
void main() {
outFragColor = vec4(texture(colorTexture, varTexCoord0).xyz, 0.3);
// outFragColor = vec4(texture(colorTexture, varTexCoord0).xyz, 0.3);
// v2
float ModulationFactor = 1.0 / 16.0;
vec3 CurrentSubpixel = textureLod(colorTexture, varTexCoord0, 0.0).rgb;
vec3 History = textureLod(historyTexture, varTexCoord0, 0.0).rgb;
vec3 NearColor0 = textureLodOffset(colorTexture, varTexCoord0, 0.0, ivec2(1, 0)).xyz;
vec3 NearColor1 = textureLodOffset(colorTexture, varTexCoord0, 0.0, ivec2(0, 1)).xyz;
vec3 NearColor2 = textureLodOffset(colorTexture, varTexCoord0, 0.0, ivec2(-1, 0)).xyz;
vec3 NearColor3 = textureLodOffset(colorTexture, varTexCoord0, 0.0, ivec2(0, -1)).xyz;
vec3 BoxMin = min(CurrentSubpixel, min(NearColor0, min(NearColor1, min(NearColor2, NearColor3))));
vec3 BoxMax = max(CurrentSubpixel, max(NearColor0, max(NearColor1, max(NearColor2, NearColor3))));;
History = clamp(History, BoxMin, BoxMax);
//if (gl_FragCoord.x > 800) {
outFragColor.xyz = History;
outFragColor.w = ModulationFactor;
/* } else {
outFragColor.xyz = CurrentSubpixel;
outFragColor.w = 1.0;
}*/
/* // filter width limit for dependent "two-tap" texture samples
float FXAA_SPAN_MAX = 8.0;

3
libraries/render-utils/src/fxaa_blend.slf
View file

@ -21,4 +21,7 @@ uniform sampler2D colorTexture;
void main(void) {
outFragColor = texture(colorTexture, varTexCoord0);
if (gl_FragCoord.x > 800) {
outFragColor.w = 1.0;
}
}