From 75972fec36c16f08dd916dd64908b31c1d70b0b0 Mon Sep 17 00:00:00 2001 From: Lynix Date: Sun, 5 Jul 2015 23:57:54 +0200 Subject: [PATCH] Graphics: Add shadow mapping Former-commit-id: ca404bee246991eab98df35396e3010ec5165c43 --- .../Nazara/Graphics/AbstractRenderQueue.hpp | 3 + .../Graphics/ForwardRenderTechnique.hpp | 5 +- .../Graphics/ForwardRenderTechnique.inl | 39 +++- include/Nazara/Graphics/Light.hpp | 7 +- .../Graphics/ForwardRenderTechnique.cpp | 22 ++- src/Nazara/Graphics/Light.cpp | 9 + .../Resources/Shaders/PhongLighting/core.frag | 167 +++++++++++++----- .../Shaders/PhongLighting/core.frag.h | 2 +- .../Resources/Shaders/PhongLighting/core.vert | 8 + .../Shaders/PhongLighting/core.vert.h | 2 +- 10 files changed, 206 insertions(+), 58 deletions(-) diff --git a/include/Nazara/Graphics/AbstractRenderQueue.hpp b/include/Nazara/Graphics/AbstractRenderQueue.hpp index e641dcca0..f7e0ad79d 100644 --- a/include/Nazara/Graphics/AbstractRenderQueue.hpp +++ b/include/Nazara/Graphics/AbstractRenderQueue.hpp @@ -68,6 +68,7 @@ class NAZARA_GRAPHICS_API NzAbstractRenderQueue { NzColor color; NzVector3f position; + NzTexture* shadowMap; float ambientFactor; float attenuation; float diffuseFactor; @@ -78,8 +79,10 @@ class NAZARA_GRAPHICS_API NzAbstractRenderQueue struct SpotLight { NzColor color; + NzMatrix4f transformMatrix; NzVector3f direction; NzVector3f position; + NzTexture* shadowMap; float ambientFactor; float attenuation; float diffuseFactor; diff --git a/include/Nazara/Graphics/ForwardRenderTechnique.hpp b/include/Nazara/Graphics/ForwardRenderTechnique.hpp index 766fd6fc9..50f8a43c0 100644 --- a/include/Nazara/Graphics/ForwardRenderTechnique.hpp +++ b/include/Nazara/Graphics/ForwardRenderTechnique.hpp @@ -33,7 +33,7 @@ class NAZARA_GRAPHICS_API NzForwardRenderTechnique : public NzAbstractRenderTech static bool Initialize(); static void Uninitialize(); - private: + protected: struct ShaderUniforms; void ChooseLights(const NzSpheref& object, bool includeDirectionalLights = true) const; @@ -43,7 +43,7 @@ class NAZARA_GRAPHICS_API NzForwardRenderTechnique : public NzAbstractRenderTech void DrawTransparentModels(const NzSceneData& sceneData) const; const ShaderUniforms* GetShaderUniforms(const NzShader* shader) const; void OnShaderInvalidated(const NzShader* shader) const; - void SendLightUniforms(const NzShader* shader, const NzLightUniforms& uniforms, unsigned int index, unsigned int uniformOffset) const; + void SendLightUniforms(const NzShader* shader, const NzLightUniforms& uniforms, unsigned int index, unsigned int uniformOffset, nzUInt8 availableTextureUnit) const; static float ComputeDirectionalLightScore(const NzSpheref& object, const NzAbstractRenderQueue::DirectionalLight& light); static float ComputePointLightScore(const NzSpheref& object, const NzAbstractRenderQueue::PointLight& light); @@ -86,6 +86,7 @@ class NAZARA_GRAPHICS_API NzForwardRenderTechnique : public NzAbstractRenderTech unsigned int m_maxLightPassPerObject; static NzIndexBuffer s_quadIndexBuffer; + static NzTextureSampler s_shadowSampler; static NzVertexBuffer s_quadVertexBuffer; static NzVertexDeclaration s_billboardInstanceDeclaration; static NzVertexDeclaration s_billboardVertexDeclaration; diff --git a/include/Nazara/Graphics/ForwardRenderTechnique.inl b/include/Nazara/Graphics/ForwardRenderTechnique.inl index 8d4d8736b..2e9f46dd4 100644 --- a/include/Nazara/Graphics/ForwardRenderTechnique.inl +++ b/include/Nazara/Graphics/ForwardRenderTechnique.inl @@ -2,8 +2,14 @@ // This file is part of the "Nazara Engine - Graphics module" // For conditions of distribution and use, see copyright notice in Config.hpp -inline void NzForwardRenderTechnique::SendLightUniforms(const NzShader* shader, const NzLightUniforms& uniforms, unsigned int index, unsigned int uniformOffset) const +#include + +inline void NzForwardRenderTechnique::SendLightUniforms(const NzShader* shader, const NzLightUniforms& uniforms, unsigned int index, unsigned int uniformOffset, nzUInt8 availableTextureUnit) const { + // If anyone got a better idea.. + int dummyCubemap = NzRenderer::GetMaxTextureUnits() - 1; + int dummyTexture = NzRenderer::GetMaxTextureUnits() - 2; + if (index < m_lights.size()) { const LightIndex& lightIndex = m_lights[index]; @@ -30,6 +36,19 @@ inline void NzForwardRenderTechnique::SendLightUniforms(const NzShader* shader, shader->SendVector(uniforms.locations.factors + uniformOffset, NzVector2f(light.ambientFactor, light.diffuseFactor)); shader->SendVector(uniforms.locations.parameters1 + uniformOffset, NzVector4f(light.position, light.attenuation)); shader->SendVector(uniforms.locations.parameters2 + uniformOffset, NzVector4f(0.f, 0.f, 0.f, light.invRadius)); + + shader->SendBoolean(uniforms.locations.shadowMapping + uniformOffset, light.shadowMap != nullptr); + if (light.shadowMap) + { + NzRenderer::SetTexture(availableTextureUnit, light.shadowMap); + NzRenderer::SetTextureSampler(availableTextureUnit, s_shadowSampler); + + shader->SendInteger(uniforms.locations.pointLightShadowMap + index, availableTextureUnit); + } + else + shader->SendInteger(uniforms.locations.pointLightShadowMap + index, dummyCubemap); + + shader->SendInteger(uniforms.locations.spotLightShadowMap + index, dummyTexture); break; } @@ -42,12 +61,30 @@ inline void NzForwardRenderTechnique::SendLightUniforms(const NzShader* shader, shader->SendVector(uniforms.locations.parameters1 + uniformOffset, NzVector4f(light.position, light.attenuation)); shader->SendVector(uniforms.locations.parameters2 + uniformOffset, NzVector4f(light.direction, light.invRadius)); shader->SendVector(uniforms.locations.parameters3 + uniformOffset, NzVector2f(light.innerAngleCosine, light.outerAngleCosine)); + + shader->SendBoolean(uniforms.locations.shadowMapping + uniformOffset, light.shadowMap != nullptr); + if (light.shadowMap) + { + NzRenderer::SetTexture(availableTextureUnit, light.shadowMap); + NzRenderer::SetTextureSampler(availableTextureUnit, s_shadowSampler); + + shader->SendMatrix(uniforms.locations.lightViewProjMatrix + index, light.transformMatrix); + shader->SendInteger(uniforms.locations.spotLightShadowMap + index, availableTextureUnit); + } + else + shader->SendInteger(uniforms.locations.spotLightShadowMap + index, dummyTexture); + + shader->SendInteger(uniforms.locations.pointLightShadowMap + index, dummyCubemap); break; } } } else + { shader->SendInteger(uniforms.locations.type + uniformOffset, -1); //< Disable the light in the shader + shader->SendInteger(uniforms.locations.pointLightShadowMap + index, dummyCubemap); + shader->SendInteger(uniforms.locations.spotLightShadowMap + index, dummyTexture); + } } inline float NzForwardRenderTechnique::ComputeDirectionalLightScore(const NzSpheref& object, const NzAbstractRenderQueue::DirectionalLight& light) diff --git a/include/Nazara/Graphics/Light.hpp b/include/Nazara/Graphics/Light.hpp index 5d42c0961..a8cdaf191 100644 --- a/include/Nazara/Graphics/Light.hpp +++ b/include/Nazara/Graphics/Light.hpp @@ -14,9 +14,6 @@ #include #include -class NzLight; -struct NzLightUniforms; - class NAZARA_GRAPHICS_API NzLight : public NzRenderable { public: @@ -101,9 +98,13 @@ struct NzLightUniforms int type; int color; int factors; + int lightViewProjMatrix; int parameters1; int parameters2; int parameters3; + int pointLightShadowMap; + int shadowMapping; + int spotLightShadowMap; }; bool ubo; diff --git a/src/Nazara/Graphics/ForwardRenderTechnique.cpp b/src/Nazara/Graphics/ForwardRenderTechnique.cpp index 440ad7a5b..b8611feaa 100644 --- a/src/Nazara/Graphics/ForwardRenderTechnique.cpp +++ b/src/Nazara/Graphics/ForwardRenderTechnique.cpp @@ -147,6 +147,9 @@ bool NzForwardRenderTechnique::Initialize() s_billboardInstanceDeclaration.EnableComponent(nzVertexComponent_InstanceData0, nzComponentType_Float3, NzOffsetOf(NzForwardRenderQueue::BillboardData, center)); s_billboardInstanceDeclaration.EnableComponent(nzVertexComponent_InstanceData1, nzComponentType_Float4, NzOffsetOf(NzForwardRenderQueue::BillboardData, size)); // Englobe sincos s_billboardInstanceDeclaration.EnableComponent(nzVertexComponent_InstanceData2, nzComponentType_Color, NzOffsetOf(NzForwardRenderQueue::BillboardData, color)); + + s_shadowSampler.SetFilterMode(nzSamplerFilter_Bilinear); + s_shadowSampler.SetWrapMode(nzSamplerWrap_Clamp); } catch (const std::exception& e) { @@ -475,7 +478,8 @@ void NzForwardRenderTechnique::DrawOpaqueModels(const NzSceneData& sceneData) co bool instancing = m_instancingEnabled && (!material->IsLightingEnabled() || noPointSpotLight) && matEntry.instancingEnabled; // On commence par appliquer du matériau (et récupérer le shader ainsi activé) - const NzShader* shader = material->Apply((instancing) ? nzShaderFlags_Instancing : 0); + nzUInt8 freeTextureUnit; + const NzShader* shader = material->Apply((instancing) ? nzShaderFlags_Instancing : 0, 0, &freeTextureUnit); // Les uniformes sont conservées au sein d'un programme, inutile de les renvoyer tant qu'il ne change pas if (shader != lastShader) @@ -559,7 +563,7 @@ void NzForwardRenderTechnique::DrawOpaqueModels(const NzSceneData& sceneData) co // Sends the uniforms for (unsigned int i = 0; i < NAZARA_GRAPHICS_MAX_LIGHT_PER_PASS; ++i) - SendLightUniforms(shader, shaderUniforms->lightUniforms, lightIndex++, i*shaderUniforms->lightOffset); + SendLightUniforms(shader, shaderUniforms->lightUniforms, lightIndex++, i*shaderUniforms->lightOffset, freeTextureUnit + i); } const NzMatrix4f* instanceMatrices = &instances[0]; @@ -618,7 +622,7 @@ void NzForwardRenderTechnique::DrawOpaqueModels(const NzSceneData& sceneData) co // Sends the light uniforms to the shader for (unsigned int i = 0; i < NAZARA_GRAPHICS_MAX_LIGHT_PER_PASS; ++i) - SendLightUniforms(shader, shaderUniforms->lightUniforms, lightIndex++, shaderUniforms->lightOffset*i); + SendLightUniforms(shader, shaderUniforms->lightUniforms, lightIndex++, shaderUniforms->lightOffset*i, freeTextureUnit + i); // Et on passe à l'affichage drawFunc(meshData.primitiveMode, 0, indexCount); @@ -668,7 +672,8 @@ void NzForwardRenderTechnique::DrawTransparentModels(const NzSceneData& sceneDat const NzMaterial* material = modelData.material; // On commence par appliquer du matériau (et récupérer le shader ainsi activé) - const NzShader* shader = material->Apply(); + nzUInt8 freeTextureUnit; + const NzShader* shader = material->Apply(0, 0, &freeTextureUnit); // Les uniformes sont conservées au sein d'un programme, inutile de les renvoyer tant qu'il ne change pas if (shader != lastShader) @@ -687,7 +692,7 @@ void NzForwardRenderTechnique::DrawTransparentModels(const NzSceneData& sceneDat lightCount = std::min(m_renderQueue.directionalLights.size(), NazaraSuffixMacro(NAZARA_GRAPHICS_MAX_LIGHT_PER_PASS, U)); for (unsigned int i = 0; i < lightCount; ++i) - SendLightUniforms(shader, shaderUniforms->lightUniforms, i, shaderUniforms->lightOffset * i); + SendLightUniforms(shader, shaderUniforms->lightUniforms, i, shaderUniforms->lightOffset * i, freeTextureUnit++); } lastShader = shader; @@ -726,7 +731,7 @@ void NzForwardRenderTechnique::DrawTransparentModels(const NzSceneData& sceneDat ChooseLights(NzSpheref(position, radius), false); for (unsigned int i = lightCount; i < NAZARA_GRAPHICS_MAX_LIGHT_PER_PASS; ++i) - SendLightUniforms(shader, shaderUniforms->lightUniforms, i, shaderUniforms->lightOffset*i); + SendLightUniforms(shader, shaderUniforms->lightUniforms, i, shaderUniforms->lightOffset*i, freeTextureUnit++); } NzRenderer::SetMatrix(nzMatrixType_World, matrix); @@ -758,9 +763,13 @@ const NzForwardRenderTechnique::ShaderUniforms* NzForwardRenderTechnique::GetSha uniforms.lightUniforms.locations.type = type0Location; uniforms.lightUniforms.locations.color = shader->GetUniformLocation("Lights[0].color"); uniforms.lightUniforms.locations.factors = shader->GetUniformLocation("Lights[0].factors"); + uniforms.lightUniforms.locations.lightViewProjMatrix = shader->GetUniformLocation("LightViewProjMatrix[0]"); uniforms.lightUniforms.locations.parameters1 = shader->GetUniformLocation("Lights[0].parameters1"); uniforms.lightUniforms.locations.parameters2 = shader->GetUniformLocation("Lights[0].parameters2"); uniforms.lightUniforms.locations.parameters3 = shader->GetUniformLocation("Lights[0].parameters3"); + uniforms.lightUniforms.locations.pointLightShadowMap = shader->GetUniformLocation("PointLightShadowMap[0]"); + uniforms.lightUniforms.locations.shadowMapping = shader->GetUniformLocation("Lights[0].shadowMapping"); + uniforms.lightUniforms.locations.spotLightShadowMap = shader->GetUniformLocation("SpotLightShadowMap[0]"); } else uniforms.hasLightUniforms = false; @@ -777,6 +786,7 @@ void NzForwardRenderTechnique::OnShaderInvalidated(const NzShader* shader) const } NzIndexBuffer NzForwardRenderTechnique::s_quadIndexBuffer; +NzTextureSampler NzForwardRenderTechnique::s_shadowSampler; NzVertexBuffer NzForwardRenderTechnique::s_quadVertexBuffer; NzVertexDeclaration NzForwardRenderTechnique::s_billboardInstanceDeclaration; NzVertexDeclaration NzForwardRenderTechnique::s_billboardVertexDeclaration; diff --git a/src/Nazara/Graphics/Light.cpp b/src/Nazara/Graphics/Light.cpp index be93fd055..4fc4506e7 100644 --- a/src/Nazara/Graphics/Light.cpp +++ b/src/Nazara/Graphics/Light.cpp @@ -57,6 +57,7 @@ void NzLight::AddToRenderQueue(NzAbstractRenderQueue* renderQueue, const NzMatri light.invRadius = m_invRadius; light.position = transformMatrix.GetTranslation(); light.radius = m_radius; + light.shadowMap = m_shadowMap.Get(); renderQueue->AddPointLight(light); break; @@ -76,6 +77,14 @@ void NzLight::AddToRenderQueue(NzAbstractRenderQueue* renderQueue, const NzMatri light.outerAngleTangent = m_outerAngleTangent; light.position = transformMatrix.GetTranslation(); light.radius = m_radius; + light.shadowMap = m_shadowMap.Get(); + + static NzMatrix4f biasMatrix(0.5f, 0.f, 0.f, 0.f, + 0.f, 0.5f, 0.f, 0.f, + 0.f, 0.f, 0.5f, 0.f, + 0.5f, 0.5f, 0.5f, 1.f); + + light.transformMatrix = NzMatrix4f::ViewMatrix(transformMatrix.GetTranslation(), transformMatrix.GetRotation()) * NzMatrix4f::Perspective(m_outerAngle*2.f, 1.f, 0.1f, m_radius) * biasMatrix; renderQueue->AddSpotLight(light); break; diff --git a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag index 80ad84697..e80279b7d 100644 --- a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag +++ b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag @@ -8,6 +8,7 @@ layout(early_fragment_tests) in; /********************Entrant********************/ in vec4 vColor; +in vec4 vLightSpacePos[3]; in mat3 vLightToWorld; in vec3 vNormal; in vec2 vTexCoord; @@ -29,10 +30,13 @@ struct Light vec4 parameters1; vec4 parameters2; vec2 parameters3; + bool shadowMapping; }; // Lumières uniform Light Lights[3]; +uniform samplerCube PointLightShadowMap[3]; +uniform sampler2D SpotLightShadowMap[3]; // Matériau uniform sampler2D MaterialAlphaMap; @@ -81,6 +85,32 @@ vec4 EncodeNormal(in vec3 normal) return vec4(vec2(atan(normal.y, normal.x)/kPI, normal.z), 0.0, 0.0); } +float VectorToDepthValue(vec3 vec, float zNear, float zFar) +{ + vec3 absVec = abs(vec); + float localZ = max(absVec.x, max(absVec.y, absVec.z)); + + float normZ = ((zFar + zNear) * localZ - (2.0*zFar*zNear)) / ((zFar - zNear)*localZ); + return (normZ + 1.0) * 0.5; +} + +bool TestShadowDirectional() +{ + ///TODO + return true; +} + +bool TestShadowPoint(int lightIndex, vec3 lightToWorld, float zNear, float zFar) +{ + return texture(PointLightShadowMap[lightIndex], vec3(lightToWorld.x, -lightToWorld.y, -lightToWorld.z)).x >= VectorToDepthValue(lightToWorld, zNear, zFar); +} + +bool TestShadowSpot(int lightIndex) +{ + vec4 lightSpacePos = vLightSpacePos[lightIndex]; + return textureProj(SpotLightShadowMap[lightIndex], lightSpacePos.xyw).x >= (lightSpacePos.z - 0.0005)/lightSpacePos.w; +} + void main() { vec4 diffuseColor = MaterialDiffuse * vColor; @@ -168,6 +198,10 @@ void main() for (int i = 0; i < 3; ++i) { + vec4 lightColor = Lights[i].color; + float lightAmbientFactor = Lights[i].factors.x; + float lightDiffuseFactor = Lights[i].factors.y; + switch (Lights[i].type) { case LIGHT_DIRECTIONAL: @@ -175,75 +209,95 @@ void main() vec3 lightDir = -Lights[i].parameters1.xyz; // Ambient - lightAmbient += Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); // Diffuse float lambert = max(dot(normal, lightDir), 0.0); - lightDiffuse += lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += lambert * lightColor.rgb * lightDiffuseFactor; // Specular vec3 reflection = reflect(-lightDir, normal); float specularFactor = max(dot(reflection, eyeVec), 0.0); specularFactor = pow(specularFactor, MaterialShininess); - lightSpecular += specularFactor * Lights[i].color.rgb; + lightSpecular += specularFactor * lightColor.rgb; break; } case LIGHT_POINT: { - vec3 lightDir = Lights[i].parameters1.xyz - vWorldPos; - float lightDirLength = length(lightDir); - lightDir /= lightDirLength; // Normalisation + vec3 lightPos = Lights[i].parameters1.xyz; + float lightAttenuation = Lights[i].parameters1.w; + float lightInvRadius = Lights[i].parameters2.w; - float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0); + vec3 worldToLight = lightPos - vWorldPos; + float lightDirLength = length(worldToLight); + vec3 lightDir = worldToLight / lightDirLength; // Normalisation + + float att = max(lightAttenuation - lightInvRadius * lightDirLength, 0.0); // Ambient - lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += att * lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); + + #if SHADOW_MAPPING + if (Lights[i].shadowMapping && !TestShadowPoint(i, vWorldPos - lightPos, 0.1, 50.0)) + break; + #endif // Diffuse float lambert = max(dot(normal, lightDir), 0.0); - lightDiffuse += att * lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += att * lambert * lightColor.rgb * lightDiffuseFactor; // Specular vec3 reflection = reflect(-lightDir, normal); float specularFactor = max(dot(reflection, eyeVec), 0.0); specularFactor = pow(specularFactor, MaterialShininess); - lightSpecular += att * specularFactor * Lights[i].color.rgb; + lightSpecular += att * specularFactor * lightColor.rgb; break; } case LIGHT_SPOT: { - vec3 lightDir = Lights[i].parameters1.xyz - vWorldPos; - float lightDirLength = length(lightDir); - lightDir /= lightDirLength; // Normalisation + vec3 lightPos = Lights[i].parameters1.xyz; + vec3 lightDir = Lights[i].parameters2.xyz; + float lightAttenuation = Lights[i].parameters1.w; + float lightInvRadius = Lights[i].parameters2.w; + float lightInnerAngle = Lights[i].parameters3.x; + float lightOuterAngle = Lights[i].parameters3.y; + + vec3 worldToLight = lightPos - vWorldPos; + float lightDistance = length(worldToLight); + worldToLight /= lightDistance; // Normalisation - float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0); + float att = max(lightAttenuation - lightInvRadius * lightDistance, 0.0); // Ambient - lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += att * lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); + + #if SHADOW_MAPPING + if (Lights[i].shadowMapping && !TestShadowSpot(i)) + break; + #endif // Modification de l'atténuation pour gérer le spot - float curAngle = dot(Lights[i].parameters2.xyz, -lightDir); - float outerAngle = Lights[i].parameters3.y; - float innerMinusOuterAngle = Lights[i].parameters3.x - outerAngle; - att *= max((curAngle - outerAngle) / innerMinusOuterAngle, 0.0); + float curAngle = dot(lightDir, -worldToLight); + float innerMinusOuterAngle = lightInnerAngle - lightOuterAngle; + att *= max((curAngle - lightOuterAngle) / innerMinusOuterAngle, 0.0); // Diffuse - float lambert = max(dot(normal, lightDir), 0.0); + float lambert = max(dot(normal, worldToLight), 0.0); - lightDiffuse += att * lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += att * lambert * lightColor.rgb * lightDiffuseFactor; // Specular - vec3 reflection = reflect(-lightDir, normal); + vec3 reflection = reflect(-worldToLight, normal); float specularFactor = max(dot(reflection, eyeVec), 0.0); specularFactor = pow(specularFactor, MaterialShininess); - lightSpecular += att * specularFactor * Lights[i].color.rgb; + lightSpecular += att * specularFactor * lightColor.rgb; break; } @@ -256,61 +310,85 @@ void main() { for (int i = 0; i < 3; ++i) { + vec4 lightColor = Lights[i].color; + float lightAmbientFactor = Lights[i].factors.x; + float lightDiffuseFactor = Lights[i].factors.y; + switch (Lights[i].type) { case LIGHT_DIRECTIONAL: { - vec3 lightDir = normalize(-Lights[i].parameters1.xyz); + vec3 lightDir = -Lights[i].parameters1.xyz; // Ambient - lightAmbient += Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); // Diffuse float lambert = max(dot(normal, lightDir), 0.0); - lightDiffuse += lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += lambert * lightColor.rgb * lightDiffuseFactor; break; } case LIGHT_POINT: { - vec3 lightDir = Lights[i].parameters1.xyz - vWorldPos; - float lightDirLength = length(lightDir); - lightDir /= lightDirLength; // Normalisation + vec3 lightPos = Lights[i].parameters1.xyz; + float lightAttenuation = Lights[i].parameters1.w; + float lightInvRadius = Lights[i].parameters2.w; - float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0); + vec3 worldToLight = lightPos - vWorldPos; + float lightDirLength = length(worldToLight); + vec3 lightDir = worldToLight / lightDirLength; // Normalisation + + float att = max(lightAttenuation - lightInvRadius * lightDirLength, 0.0); // Ambient - lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += att * lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); + + #if SHADOW_MAPPING + if (Lights[i].shadowMapping && !TestShadowPoint(i, vWorldPos - lightPos, 0.1, 1.0 / lightInvRadius)) + break; + #endif // Diffuse float lambert = max(dot(normal, lightDir), 0.0); - lightDiffuse += att * lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += att * lambert * lightColor.rgb * lightDiffuseFactor; break; } case LIGHT_SPOT: { - vec3 lightDir = Lights[i].parameters1.xyz - vWorldPos; - float lightDirLength = length(lightDir); - lightDir /= lightDirLength; // Normalisation + vec3 lightPos = Lights[i].parameters1.xyz; + vec3 lightDir = Lights[i].parameters2.xyz; + float lightAttenuation = Lights[i].parameters1.w; + float lightInvRadius = Lights[i].parameters2.w; + float lightInnerAngle = Lights[i].parameters3.x; + float lightOuterAngle = Lights[i].parameters3.y; + + vec3 worldToLight = lightPos - vWorldPos; + float lightDistance = length(worldToLight); + worldToLight /= lightDistance; // Normalisation - float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0); + float att = max(lightAttenuation - lightInvRadius * lightDistance, 0.0); // Ambient - lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb); + lightAmbient += att * lightColor.rgb * lightAmbientFactor * (MaterialAmbient.rgb + SceneAmbient.rgb); + + #if SHADOW_MAPPING + if (Lights[i].shadowMapping && !TestShadowSpot(i)) + break; + #endif // Modification de l'atténuation pour gérer le spot - float curAngle = dot(Lights[i].parameters2.xyz, -lightDir); - float outerAngle = Lights[i].parameters3.y; - float innerMinusOuterAngle = Lights[i].parameters3.x - outerAngle; - att *= max((curAngle - outerAngle) / innerMinusOuterAngle, 0.0); + float curAngle = dot(lightDir, -worldToLight); + float innerMinusOuterAngle = lightInnerAngle - lightOuterAngle; + att *= max((curAngle - lightOuterAngle) / innerMinusOuterAngle, 0.0); // Diffuse - float lambert = max(dot(normal, lightDir), 0.0); + float lambert = max(dot(normal, worldToLight), 0.0); - lightDiffuse += att * lambert * Lights[i].color.rgb * Lights[i].factors.y; + lightDiffuse += att * lambert * lightColor.rgb * lightDiffuseFactor; } default: @@ -318,7 +396,7 @@ void main() } } } - + lightSpecular *= MaterialSpecular.rgb; #if SPECULAR_MAPPING lightSpecular *= texture(MaterialSpecularMap, texCoord).rgb; // Utiliser l'alpha de MaterialSpecular n'aurait aucun sens @@ -340,3 +418,4 @@ void main() #endif // LIGHTING #endif // FLAG_DEFERRED } + diff --git a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag.h b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag.h index 29895eefa..ca82b7284 100644 --- a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag.h +++ b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.frag.h @@ -1 +1 @@ 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\ No newline at end of file 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\ No newline at end of file diff --git a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert index 5c1d95fef..06f7b7bd2 100644 --- a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert +++ b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert @@ -15,6 +15,7 @@ in vec2 VertexTexCoord; /********************Sortant********************/ out vec4 vColor; +out vec4 vLightSpacePos[3]; out mat3 vLightToWorld; out vec3 vNormal; out vec2 vTexCoord; @@ -23,6 +24,8 @@ out vec3 vWorldPos; /********************Uniformes********************/ uniform vec3 EyePosition; +uniform mat4 InvViewMatrix; +uniform mat4 LightViewProjMatrix[3]; uniform float VertexDepth; uniform mat4 ViewProjMatrix; uniform mat4 WorldMatrix; @@ -120,6 +123,11 @@ void main() #endif #endif +#if SHADOW_MAPPING + for (int i = 0; i < 3; ++i) + vLightSpacePos[i] = LightViewProjMatrix[i] * WorldMatrix * vec4(VertexPosition, 1.0); +#endif + #if TEXTURE_MAPPING vTexCoord = VertexTexCoord; #endif diff --git a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert.h b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert.h index 3c23c60a3..45e30d30e 100644 --- a/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert.h +++ b/src/Nazara/Graphics/Resources/Shaders/PhongLighting/core.vert.h @@ -1 +1 @@ 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\ No newline at end of file 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\ No newline at end of file