postprocessing: ssao: have shader parameters here

andreasdr · Oct 24, 2023 · ae9016d · ae9016d
1 parent 9d75292
commit ae9016d
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Showing 5 changed files with 48 additions and 23 deletions.
diff --git a/shader/gl2/postprocessing/ssao_map_fragmentshader.frag b/shader/gl2/postprocessing/ssao_map_fragmentshader.frag
@@ -7,19 +7,19 @@
 precision highp sampler2D;
 precision highp float;
 
-#define strength		0.25
-#define area			0.0075
-#define falloff		0.000001
-#define radius		0.02
-#define samples		8
-
 // uniforms
 uniform sampler2D colorBufferTextureUnit;
 uniform sampler2D depthBufferTextureUnit;
 uniform sampler2D randomTextureUnit;
 uniform float bufferTexturePixelWidth;
 uniform float bufferTexturePixelHeight;
-uniform vec3 sphere[samples];
+uniform vec3 sphere[16];
+
+uniform float strength;
+uniform float area;
+uniform float falloff;
+uniform float radius;
+uniform int samples;
 
 // passed from vertex shader
 varying vec2 vsFragTextureUV;

diff --git a/shader/gl3/postprocessing/ssao_map_fragmentshader.frag b/shader/gl3/postprocessing/ssao_map_fragmentshader.frag
@@ -4,19 +4,19 @@
 
 #version 330 core
 
-#define strength		0.25
-#define area			0.0075
-#define falloff		0.000001
-#define radius		0.02
-#define samples		16
-
 // uniforms
 uniform sampler2D colorBufferTextureUnit;
 uniform sampler2D depthBufferTextureUnit;
 uniform sampler2D randomTextureUnit;
 uniform float bufferTexturePixelWidth;
 uniform float bufferTexturePixelHeight;
-uniform vec3 sphere[samples];
+uniform vec3 sphere[16];
+
+uniform float strength;
+uniform float area;
+uniform float falloff;
+uniform float radius;
+uniform int samples;
 
 // passed from vertex shader
 in vec2 vsFragTextureUV;

diff --git a/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOImplementation.cpp b/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOImplementation.cpp
@@ -54,7 +54,18 @@ void PostProcessingShaderSSAOImplementation::initialize()
 	if (initialized == false) return;
 
 	//
-	Engine::registerShader(Engine::ShaderType::SHADERTYPE_POSTPROCESSING, "ssao");
+	Engine::registerShader(
+		Engine::ShaderType::SHADERTYPE_POSTPROCESSING,
+		"ssao",
+		{
+			{ "strength", ShaderParameter(0.25f), ShaderParameter(0.0f), ShaderParameter(1.0f), ShaderParameter(0.05f) },
+			{ "area", ShaderParameter(0.0075f), ShaderParameter(0.0f), ShaderParameter(1.0f), ShaderParameter(0.05f) },
+			{ "falloff", ShaderParameter(0.1f), ShaderParameter(0.0f), ShaderParameter(1.0f), ShaderParameter(0.05f) },
+			{ "radius", ShaderParameter(0.02f), ShaderParameter(0.0f), ShaderParameter(1.0f), ShaderParameter(0.05f) },
+			{ "samples", ShaderParameter(8), ShaderParameter(1), ShaderParameter(16), ShaderParameter(1) }
+
+		}
+	);
 }
 
 void PostProcessingShaderSSAOImplementation::setShaderParameters(int contextIdx, Engine* engine) {

diff --git a/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOMapImplementation.cpp b/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOMapImplementation.cpp
@@ -65,16 +65,20 @@ void PostProcessingShaderSSAOMapImplementation::initialize()
 	// custom initialization
 	for (auto i = 0; i < uniformSphere.size(); i++) {
 		uniformSphere[i] = renderer->getProgramUniformLocation(programId, "sphere[" + to_string(i) + "]");
-		if (uniformSphere[i] == -1) {
-			initialized = false;
-			return;
-		}
+		if (uniformSphere[i] == -1) return;
 	}
 	uniformRandomTextureUnit = renderer->getProgramUniformLocation(programId, "randomTextureUnit");
-	if (uniformRandomTextureUnit == -1) {
-		initialized = false;
-		return;
-	}
+	if (uniformRandomTextureUnit == -1) return;
+	uniformStrength = renderer->getProgramUniformLocation(programId, "strength");
+	if (uniformStrength == -1) return;
+	uniformArea = renderer->getProgramUniformLocation(programId, "area");
+	if (uniformArea == -1) return;
+	uniformFallOff = renderer->getProgramUniformLocation(programId, "falloff");
+	if (uniformFallOff == -1) return;
+	uniformRadius = renderer->getProgramUniformLocation(programId, "radius");
+	if (uniformRadius == -1) return;
+	uniformSamples = renderer->getProgramUniformLocation(programId, "samples");
+	if (uniformSamples == -1) return;
 
 	//
 	loadTextures(".");
@@ -107,6 +111,11 @@ void PostProcessingShaderSSAOMapImplementation::useProgram(int contextIdx) {
 }
 
 void PostProcessingShaderSSAOMapImplementation::setShaderParameters(int contextIdx, Engine* engine) {
+	renderer->setProgramUniformFloat(contextIdx, uniformStrength, engine->getShaderParameter("ssao", "strength").getFloatValue());
+	renderer->setProgramUniformFloat(contextIdx, uniformArea, engine->getShaderParameter("ssao", "area").getFloatValue());
+	renderer->setProgramUniformFloat(contextIdx, uniformFallOff, engine->getShaderParameter("ssao", "falloff").getFloatValue() / 100000.0f);
+	renderer->setProgramUniformFloat(contextIdx, uniformRadius, engine->getShaderParameter("ssao", "radius").getFloatValue());
+	renderer->setProgramUniformInteger(contextIdx, uniformSamples, engine->getShaderParameter("ssao", "samples").getIntegerValue());
 }
 
 void PostProcessingShaderSSAOMapImplementation::unloadTextures() {

diff --git a/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOMapImplementation.h b/src/tdme/engine/subsystems/postprocessing/PostProcessingShaderSSAOMapImplementation.h
@@ -49,6 +49,11 @@ class tdme::engine::subsystems::postprocessing::PostProcessingShaderSSAOMapImple
 private:
 	array<int32_t, 16> uniformSphere;
 	int32_t uniformRandomTextureUnit { -1 };
+	int32_t uniformStrength { -1 };
+	int32_t uniformArea { -1 };
+	int32_t uniformFallOff { -1 };
+	int32_t uniformRadius { -1 };
+	int32_t uniformSamples { -1 };
 	Texture* randomTexture { nullptr };
 	int32_t randomTextureId { -1 };
 };