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Added shadow mapping example

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saschawillems 2016-02-28 22:26:11 +01:00
parent 9ecbaca69f
commit e45c90f180
19 changed files with 3577 additions and 0 deletions
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688
data/models/vulkanscene_shadow.dae Normal file
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data/shaders/shadowmapping/generate-spirv.bat Normal file
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glslangvalidator -V offscreen.vert -o offscreen.vert.spv
glslangvalidator -V offscreen.frag -o offscreen.frag.spv
glslangvalidator -V quad.vert -o quad.vert.spv
glslangvalidator -V quad.frag -o quad.frag.spv
glslangvalidator -V scene.vert -o scene.vert.spv
glslangvalidator -V scene.frag -o scene.frag.spv

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data/shaders/shadowmapping/offscreen.frag Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout(location = 0) out vec4 color;
//layout(location = 0) out float fragmentdepth;
void main()
{
// fragmentdepth = gl_FragCoord.z;
color = vec4(1.0, 0.0, 0.0, 1.0);
}

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data/shaders/shadowmapping/offscreen.frag.spv Normal file
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data/shaders/shadowmapping/offscreen.vert Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec3 inPos;
layout (binding = 0) uniform UBO
{
mat4 depthMVP;
} ubo;
void main()
{
gl_Position = ubo.depthMVP * vec4(inPos, 1.0);
}

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data/shaders/shadowmapping/offscreen.vert.spv Normal file
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data/shaders/shadowmapping/quad.frag Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (binding = 1) uniform sampler2D samplerColor;
layout (location = 0) in vec2 inUV;
layout (location = 0) out vec4 outFragColor;
float LinearizeDepth(float depth)
{
float n = 1.0; // camera z near
float f = 128.0; // camera z far
float z = depth;
return (2.0 * n) / (f + n - z * (f - n));
}
void main()
{
float depth = texture(samplerColor, inUV).r;
outFragColor = vec4(vec3(1.0-LinearizeDepth(depth)), 1.0);
}

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data/shaders/shadowmapping/quad.frag.spv Normal file
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data/shaders/shadowmapping/quad.vert Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec3 inPos;
layout (location = 1) in vec2 inUV;
layout (binding = 0) uniform UBO
{
mat4 projection;
mat4 model;
} ubo;
layout (location = 0) out vec2 outUV;
void main()
{
outUV = inUV;
gl_Position = ubo.projection * ubo.model * vec4(inPos.xyz, 1.0);
}

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data/shaders/shadowmapping/scene.frag Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (binding = 1) uniform sampler2D shadowMap;
layout (location = 0) in vec3 inNormal;
layout (location = 1) in vec3 inColor;
layout (location = 2) in vec3 inViewVec;
layout (location = 3) in vec3 inLightVec;
layout (location = 4) in vec4 inShadowCoord;
layout (location = 0) out vec4 outFragColor;
#define ambient 0.1
float textureProj(vec4 P, vec2 off)
{
float shadow = 1.0;
vec4 shadowCoord = P / P.w;
if ( shadowCoord.z > -1.0 && shadowCoord.z < 1.0 )
{
float dist = texture( shadowMap, shadowCoord.st + off ).r;
if ( shadowCoord.w > 0.0 && dist < shadowCoord.z )
{
shadow = ambient;
}
}
return shadow;
}
float filterPCF(vec4 sc)
{
ivec2 texDim = textureSize(shadowMap, 0);
float scale = 1.5;
float dx = scale * 1.0 / float(texDim.x);
float dy = scale * 1.0 / float(texDim.y);
float shadowFactor = 0.0;
int count = 0;
int range = 1;
for (int x = -range; x <= range; x++)
{
for (int y = -range; y <= range; y++)
{
shadowFactor += textureProj(sc, vec2(dx*x, dy*y));
count++;
}
}
return shadowFactor / count;
}
void main()
{
float shadow = filterPCF(inShadowCoord / inShadowCoord.w);
vec3 N = normalize(inNormal);
vec3 L = normalize(inLightVec);
vec3 V = normalize(inViewVec);
vec3 R = normalize(-reflect(L, N));
vec3 diffuse = max(dot(N, L), ambient) * inColor;
// vec3 specular = pow(max(dot(R, V), 0.0), 50.0) * vec3(0.75);
outFragColor = vec4(diffuse * shadow, 1.0);
}

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data/shaders/shadowmapping/scene.vert Normal file
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#version 450
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (location = 0) in vec3 inPos;
layout (location = 1) in vec2 inUV;
layout (location = 2) in vec3 inColor;
layout (location = 3) in vec3 inNormal;
layout (binding = 0) uniform UBO
{
mat4 projection;
mat4 view;
mat4 model;
mat4 lightSpace;
vec3 lightPos;
} ubo;
layout (location = 0) out vec3 outNormal;
layout (location = 1) out vec3 outColor;
layout (location = 2) out vec3 outViewVec;
layout (location = 3) out vec3 outLightVec;
layout (location = 4) out vec4 outShadowCoord;
const mat4 biasMat = mat4(
0.5, 0.0, 0.0, 0.0,
0.0, 0.5, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.5, 0.5, 0.0, 1.0 );
void main()
{
outColor = inColor;
outNormal = inNormal;
gl_Position = ubo.projection * ubo.view * ubo.model * vec4(inPos.xyz, 1.0);
vec4 pos = ubo.model * vec4(inPos, 1.0);
outNormal = mat3(ubo.model) * inNormal;
outLightVec = normalize(ubo.lightPos - inPos);
outViewVec = -pos.xyz;
outShadowCoord = ( biasMat * ubo.lightSpace * ubo.model ) * vec4(inPos, 1.0);
}

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shadowmapping/shadowmap.cpp Normal file
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shadowmapping/shadowmapping.cpp Normal file
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92
shadowmapping/shadowmapping.vcxproj Normal file
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<PropertyGroup Label="Globals">
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;VK_PROTOTYPES;VK_USE_PLATFORM_WIN32_KHR;_USE_MATH_DEFINES;NOMINMAX;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
<WarningLevel>Level3</WarningLevel>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>..\base;..\external\glm;..\external\gli;..\external\assimp;..\external;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<AdditionalOptions>/FS %(AdditionalOptions)</AdditionalOptions>
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<Link>
<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<AdditionalDependencies>..\libs\vulkan\vulkan-1.lib;..\libs\assimp\assimp.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<GenerateDebugInformation>true</GenerateDebugInformation>
<SubSystem>Windows</SubSystem>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
<AdditionalDependencies>..\libs\vulkan\vulkan-1.lib;..\libs\assimp\assimp.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<ItemGroup>
<ClCompile Include="..\base\vulkandebug.cpp" />
<ClCompile Include="..\base\vulkanexamplebase.cpp" />
<ClCompile Include="..\base\vulkantools.cpp" />
<ClCompile Include="shadowmapping.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\base\vulkandebug.h" />
<ClInclude Include="..\base\vulkanexamplebase.h" />
<ClInclude Include="..\base\vulkantools.h" />
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
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shadowmapping/shadowmapping.vcxproj.filters Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Filter Include="Source Files">
<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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<ClCompile Include="..\base\vulkandebug.cpp">
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6
vulkanExamples.sln
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@ -55,6 +55,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "distancefieldfonts", "dista
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "multithreading", "multithreading\multithreading.vcxproj", "{F5703C3C-F495-4D5C-BAA5-A90C4E20C7B7}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "shadowmapping", "shadowmapping\shadowmapping.vcxproj", "{BF22CE41-AA83-45FE-813A-451E2EDF58D9}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
@ -165,6 +167,10 @@ Global
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GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE