diff options
| -rw-r--r-- | shaders/fbo_frag.glsl | 28 | ||||
| -rw-r--r-- | src/main.cpp | 11 |
2 files changed, 35 insertions, 4 deletions
diff --git a/shaders/fbo_frag.glsl b/shaders/fbo_frag.glsl index cf1fafa..f6f12cd 100644 --- a/shaders/fbo_frag.glsl +++ b/shaders/fbo_frag.glsl @@ -4,10 +4,30 @@ out vec4 FragColor; in vec2 TexCoords;
uniform sampler2D screenTexture;
+uniform int applySSSSS;
+uniform int N;
void main()
-{
- FragColor = vec4(
- texture(screenTexture, TexCoords).rgb,
- 1.0);
+{
+ if (applySSSSS == 1) {
+ float x = 1.0/1600.0;
+ float y = 1.0/900.0;
+
+ float maxDist = N*N + N*N;
+
+ vec4 color = vec4(0, 0, 0, 1);
+ for (int i = -N; i <= N; i++) {
+ for (int j = -N; j <= N; j++) {
+ float dist = i*i + j*j;
+ vec4 newC = texture(screenTexture, TexCoords + vec2(i*x, j*y)) / (2*N*N);
+ float factor = 1 - (dist / maxDist);
+ factor = pow(factor, 2);
+ color += newC * factor;
+ }
+ }
+ FragColor = color;
+ }
+ else {
+ FragColor = texture(screenTexture, TexCoords);
+ }
}
diff --git a/src/main.cpp b/src/main.cpp index 41d5e76..4168c50 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -304,6 +304,8 @@ int main() { glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
//glBindTexture(GL_TEXTURE_2D, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, renderTexture, 0);
@@ -359,6 +361,8 @@ int main() { struct {
bool wireframe = false;
bool freecam = false;
+ bool sssss = false;
+ int N = 2;
} options;
sf::Clock deltaClock;
@@ -468,6 +472,9 @@ int main() { glClear(GL_COLOR_BUFFER_BIT);
glUseProgram(screenShaderProgram);
+ glUniform1i(glGetUniformLocation(screenShaderProgram, "applySSSSS"), options.sssss);
+ glUniform1i(glGetUniformLocation(screenShaderProgram, "N"), options.N);
+
glBindVertexArray(screenVAO);
glBindTexture(GL_TEXTURE_2D, renderTexture);
glDrawArrays(GL_TRIANGLES, 0, 6);
@@ -478,6 +485,10 @@ int main() { ImGui::Begin("Options");
ImGui::Checkbox("Wireframe", &options.wireframe);
ImGui::Checkbox("Free Cam", &options.freecam);
+ ImGui::Checkbox("SSSSS", &options.sssss);
+ if (options.sssss) {
+ ImGui::DragInt("N", &options.N, 0.05f, 1, 16);
+ }
if (options.freecam) {
ImGui::LabelText("Position", "%f %f %f", freeCam.pos.x, freeCam.pos.y, freeCam.pos.z);
ImGui::LabelText("Rotation", "%f %f", freeCam.rot.x, freeCam.rot.y);
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