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Examples: ComputeSpriteBatch: add uniform buffer #49

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Binary file modified Content/Shaders/Compiled/DXIL/SpriteBatch.comp.dxil
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48 changes: 27 additions & 21 deletions Content/Shaders/Compiled/MSL/SpriteBatch.comp.msl
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,11 @@

using namespace metal;

struct type_UBO
{
float time;
};

struct SpriteComputeData
{
packed_float3 position;
Expand All @@ -28,27 +33,28 @@ struct type_RWStructuredBuffer_SpriteVertex
SpriteVertex _m0[1];
};

kernel void main0(const device type_StructuredBuffer_SpriteComputeData& ComputeBuffer [[buffer(0)]], device type_RWStructuredBuffer_SpriteVertex& VertexBuffer [[buffer(1)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
kernel void main0(constant type_UBO& UBO [[buffer(0)]], const device type_StructuredBuffer_SpriteComputeData& ComputeBuffer [[buffer(1)]], device type_RWStructuredBuffer_SpriteVertex& VertexBuffer [[buffer(2)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
SpriteComputeData _52 = ComputeBuffer._m0[gl_GlobalInvocationID.x];
float _62 = cos(_52.rotation);
float _63 = sin(_52.rotation);
float4x4 _74 = (float4x4(float4(1.0, 0.0, 0.0, 0.0), float4(0.0, 1.0, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(_52.position[0], _52.position[1], _52.position[2], 1.0)) * float4x4(float4(_62, _63, 0.0, 0.0), float4(-_63, _62, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(0.0, 0.0, 0.0, 1.0))) * float4x4(float4(_52.scale.x, 0.0, 0.0, 0.0), float4(0.0, _52.scale.y, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(0.0, 0.0, 0.0, 1.0));
uint _76 = gl_GlobalInvocationID.x * 4u;
VertexBuffer._m0[_76].position = _74 * float4(0.0, 0.0, 0.0, 1.0);
uint _79 = _76 + 1u;
VertexBuffer._m0[_79].position = _74 * float4(1.0, 0.0, 0.0, 1.0);
uint _82 = _76 + 2u;
VertexBuffer._m0[_82].position = _74 * float4(0.0, 1.0, 0.0, 1.0);
uint _85 = _76 + 3u;
VertexBuffer._m0[_85].position = _74 * float4(1.0, 1.0, 0.0, 1.0);
VertexBuffer._m0[_76].texcoord = float2(0.0);
VertexBuffer._m0[_79].texcoord = float2(1.0, 0.0);
VertexBuffer._m0[_82].texcoord = float2(0.0, 1.0);
VertexBuffer._m0[_85].texcoord = float2(1.0);
VertexBuffer._m0[_76].color = _52.color;
VertexBuffer._m0[_79].color = _52.color;
VertexBuffer._m0[_82].color = _52.color;
VertexBuffer._m0[_85].color = _52.color;
SpriteComputeData _56 = ComputeBuffer._m0[gl_GlobalInvocationID.x];
float _66 = cos(_56.rotation);
float _67 = sin(_56.rotation);
float4x4 _78 = (float4x4(float4(1.0, 0.0, 0.0, 0.0), float4(0.0, 1.0, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(_56.position[0], _56.position[1], _56.position[2], 1.0)) * float4x4(float4(_66, _67, 0.0, 0.0), float4(-_67, _66, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(0.0, 0.0, 0.0, 1.0))) * float4x4(float4(_56.scale.x, 0.0, 0.0, 0.0), float4(0.0, _56.scale.y, 0.0, 0.0), float4(0.0, 0.0, 1.0, 0.0), float4(0.0, 0.0, 0.0, 1.0));
uint _80 = gl_GlobalInvocationID.x * 4u;
VertexBuffer._m0[_80].position = _78 * float4(0.0, 0.0, 0.0, 1.0);
uint _83 = _80 + 1u;
VertexBuffer._m0[_83].position = _78 * float4(1.0, 0.0, 0.0, 1.0);
uint _86 = _80 + 2u;
VertexBuffer._m0[_86].position = _78 * float4(0.0, 1.0, 0.0, 1.0);
uint _89 = _80 + 3u;
VertexBuffer._m0[_89].position = _78 * float4(1.0, 1.0, 0.0, 1.0);
VertexBuffer._m0[_80].texcoord = float2(0.0);
VertexBuffer._m0[_83].texcoord = float2(1.0, 0.0);
VertexBuffer._m0[_86].texcoord = float2(0.0, 1.0);
VertexBuffer._m0[_89].texcoord = float2(1.0);
float4 _98 = _56.color * sin(UBO.time);
VertexBuffer._m0[_80].color = _98;
VertexBuffer._m0[_83].color = _98;
VertexBuffer._m0[_86].color = _98;
VertexBuffer._m0[_89].color = _98;
}

Binary file modified Content/Shaders/Compiled/SPIRV/SpriteBatch.comp.spv
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14 changes: 10 additions & 4 deletions Content/Shaders/Source/SpriteBatch.comp.hlsl
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Expand Up @@ -13,6 +13,11 @@ struct SpriteVertex
float4 color;
};

cbuffer UBO : register(b0, space2)
{
float time : packoffset(c0);
};

StructuredBuffer<SpriteComputeData> ComputeBuffer : register(t0, space0);
RWStructuredBuffer<SpriteVertex> VertexBuffer : register(u0, space1);

Expand Down Expand Up @@ -64,8 +69,9 @@ void main(uint3 GlobalInvocationID : SV_DispatchThreadID)
VertexBuffer[n * 4u + 2].texcoord = float2(0.0f, 1.0f);
VertexBuffer[n * 4u + 3].texcoord = float2(1.0f, 1.0f);

VertexBuffer[n * 4u] .color = currentSpriteData.color;
VertexBuffer[n * 4u + 1].color = currentSpriteData.color;
VertexBuffer[n * 4u + 2].color = currentSpriteData.color;
VertexBuffer[n * 4u + 3].color = currentSpriteData.color;
float st = sin(time);
VertexBuffer[n * 4u] .color = currentSpriteData.color * st;
VertexBuffer[n * 4u + 1].color = currentSpriteData.color * st;
VertexBuffer[n * 4u + 2].color = currentSpriteData.color * st;
VertexBuffer[n * 4u + 3].color = currentSpriteData.color * st;
}
7 changes: 6 additions & 1 deletion Examples/ComputeSpriteBatch.c
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Expand Up @@ -25,7 +25,9 @@ typedef struct ComputeSpriteInstance
float r, g, b, a;
} ComputeSpriteInstance;

const Uint32 SPRITE_COUNT = 8192;
const Uint32 SPRITE_COUNT = 819200;

static float t;

static int Init(Context* context)
{
Expand Down Expand Up @@ -131,6 +133,7 @@ static int Init(Context* context)
&(SDL_GPUComputePipelineCreateInfo){
.num_readonly_storage_buffers = 1,
.num_readwrite_storage_buffers = 1,
.num_uniform_buffers = 1,
.threadcount_x = 64,
.threadcount_y = 1,
.threadcount_z = 1
Expand Down Expand Up @@ -292,6 +295,7 @@ static int Init(Context* context)

static int Update(Context* context)
{
t += 0.1f;
return 0;
}

Expand Down Expand Up @@ -383,6 +387,7 @@ static int Draw(Context* context)
},
1
);
SDL_PushGPUComputeUniformData(cmdBuf, 0, &t, sizeof(float));
SDL_DispatchGPUCompute(computePass, SPRITE_COUNT / 64, 1, 1);

SDL_EndGPUComputePass(computePass);
Expand Down