diff options
Diffstat (limited to 'tests/examplefiles/example.hlsl')
| -rw-r--r-- | tests/examplefiles/example.hlsl | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/tests/examplefiles/example.hlsl b/tests/examplefiles/example.hlsl deleted file mode 100644 index 21d0a672..00000000 --- a/tests/examplefiles/example.hlsl +++ /dev/null @@ -1,168 +0,0 @@ -// A few random snippets of HLSL shader code I gathered...
-
-[numthreads(256, 1, 1)]
-void cs_main(uint3 threadId : SV_DispatchThreadID)
-{
- // Seed the PRNG using the thread ID
- rng_state = threadId.x;
-
- // Generate a few numbers...
- uint r0 = rand_xorshift();
- uint r1 = rand_xorshift();
- // Do some stuff with them...
-
- // Generate a random float in [0, 1)...
- float f0 = float(rand_xorshift()) * (1.0 / 4294967296.0);
-
- // ...etc.
-}
-
-// Constant buffer of parameters
-cbuffer IntegratorParams : register(b0)
-{
- float2 specPow; // Spec powers in XY directions (equal for isotropic BRDFs)
- float3 L; // Unit vector toward light
- int2 cThread; // Total threads launched in XY dimensions
- int2 xyOutput; // Where in the output buffer to store the result
-}
-
-static const float pi = 3.141592654;
-
-float AshikhminShirleyNDF(float3 H)
-{
- float normFactor = sqrt((specPow.x + 2.0f) * (specPow.y + 2.0)) * (0.5f / pi);
- float NdotH = H.z;
- float2 Hxy = normalize(H.xy);
- return normFactor * pow(NdotH, dot(specPow, Hxy * Hxy));
-}
-
-float BeckmannNDF(float3 H)
-{
- float glossFactor = specPow.x * 0.5f + 1.0f; // This is 1/m^2 in the usual Beckmann formula
- float normFactor = glossFactor * (1.0f / pi);
- float NdotHSq = H.z * H.z;
- return normFactor / (NdotHSq * NdotHSq) * exp(glossFactor * (1.0f - 1.0f / NdotHSq));
-}
-
-// Output buffer for compute shader (actually float, but must be declared as uint
-// for atomic operations to work)
-globallycoherent RWTexture2D<uint> o_data : register(u0);
-
-// Sum up the outputs of all threads and store to the output location
-static const uint threadGroupSize2D = 16;
-static const uint threadGroupSize1D = threadGroupSize2D * threadGroupSize2D;
-groupshared float g_partialSums[threadGroupSize1D];
-void SumAcrossThreadsAndStore(float value, uint iThreadInGroup)
-{
- // First reduce within the threadgroup: partial sums of 2, 4, 8... elements
- // are calculated by 1/2, 1/4, 1/8... of the threads, always keeping the
- // active threads at the front of the group to minimize divergence.
-
- // NOTE: there are faster ways of doing this...but this is simple to code
- // and good enough.
-
- g_partialSums[iThreadInGroup] = value;
- GroupMemoryBarrierWithGroupSync();
-
- [unroll] for (uint i = threadGroupSize1D / 2; i > 0; i /= 2)
- {
- if (iThreadInGroup < i)
- {
- g_partialSums[iThreadInGroup] += g_partialSums[iThreadInGroup + i];
- }
- GroupMemoryBarrierWithGroupSync();
- }
-
- // Then reduce across threadgroups: one thread from each group adds the group
- // total to the final output location, using a software transactional memory
- // style since D3D11 doesn't support atomic add on floats.
- // (Assumes the output value has been cleared to zero beforehand.)
-
- if (iThreadInGroup == 0)
- {
- float threadGroupSum = g_partialSums[0];
- uint outputValueRead = o_data[xyOutput];
- while (true)
- {
- uint newOutputValue = asuint(asfloat(outputValueRead) + threadGroupSum);
- uint previousOutputValue;
- InterlockedCompareExchange(
- o_data[xyOutput], outputValueRead, newOutputValue, previousOutputValue);
- if (previousOutputValue == outputValueRead)
- break;
- outputValueRead = previousOutputValue;
- }
- }
-}
-
-void main(
- in Vertex i_vtx,
- out Vertex o_vtx,
- out float3 o_vecCamera : CAMERA,
- out float4 o_uvzwShadow : UVZW_SHADOW,
- out float4 o_posClip : SV_Position)
-{
- o_vtx = i_vtx;
- o_vecCamera = g_posCamera - i_vtx.m_pos;
- o_uvzwShadow = mul(float4(i_vtx.m_pos, 1.0), g_matWorldToUvzwShadow);
- o_posClip = mul(float4(i_vtx.m_pos, 1.0), g_matWorldToClip);
-}
-
-#pragma pack_matrix(row_major)
-
-struct Vertex
-{
- float3 m_pos : POSITION;
- float3 m_normal : NORMAL;
- float2 m_uv : UV;
-};
-
-cbuffer CBFrame : CB_FRAME // matches struct CBFrame in test.cpp
-{
- float4x4 g_matWorldToClip;
- float4x4 g_matWorldToUvzwShadow;
- float3x3 g_matWorldToUvzShadowNormal;
- float3 g_posCamera;
-
- float3 g_vecDirectionalLight;
- float3 g_rgbDirectionalLight;
-
- float2 g_dimsShadowMap;
- float g_normalOffsetShadow;
- float g_shadowSharpening;
-
- float g_exposure; // Exposure multiplier
-}
-
-Texture2D<float3> g_texDiffuse : register(t0);
-SamplerState g_ss : register(s0);
-
-void main(
- in Vertex i_vtx,
- in float3 i_vecCamera : CAMERA,
- in float4 i_uvzwShadow : UVZW_SHADOW,
- out float3 o_rgb : SV_Target)
-{
- float3 normal = normalize(i_vtx.m_normal);
-
- // Sample shadow map
- float shadow = EvaluateShadow(i_uvzwShadow, normal);
-
- // Evaluate diffuse lighting
- float3 diffuseColor = g_texDiffuse.Sample(g_ss, i_vtx.m_uv);
- float3 diffuseLight = g_rgbDirectionalLight * (shadow * saturate(dot(normal, g_vecDirectionalLight)));
- diffuseLight += SimpleAmbient(normal);
-
- o_rgb = diffuseColor * diffuseLight;
-}
-
-[domain("quad")]
-void ds(
- in float edgeFactors[4] : SV_TessFactor,
- in float insideFactors[2] : SV_InsideTessFactor,
- in OutputPatch<VData, 4> inp,
- in float2 uv : SV_DomainLocation,
- out float4 o_pos : SV_Position)
-{
- o_pos = lerp(lerp(inp[0].pos, inp[1].pos, uv.x), lerp(inp[2].pos, inp[3].pos, uv.x), uv.y);
-}
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