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[host] windows: the vertex shader is common to all post-processors

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This commit is contained in:
Geoffrey McRae 2023-10-30 00:44:39 +11:00
parent f6b2cec841
commit b3879ff1d7
3 changed files with 95 additions and 72 deletions
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72
host/platform/Windows/capture/DXGI/src/dxgi.c
View File

@ -271,6 +271,57 @@ static bool dxgi_create(CaptureGetPointerBuffer getPointerBufferFn, CapturePostP
return true;
}
static bool initVertexShader(void)
{
static const char * vshaderSrc =
"void main(\n"
" in uint vertexID : SV_VERTEXID,\n"
" out float4 position : SV_POSITION,\n"
" out float2 texCoord : TEXCOORD0)\n"
"{\n"
" float2 positions[4] =\n"
" {\n"
" float2(-1.0, 1.0),\n"
" float2( 1.0, 1.0),\n"
" float2(-1.0, -1.0),\n"
" float2( 1.0, -1.0)\n"
" };\n"
"\n"
" float2 texCoords[4] =\n"
" {\n"
" float2(0.0, 0.0),\n"
" float2(1.0, 0.0),\n"
" float2(0.0, 1.0),\n"
" float2(1.0, 1.0)\n"
" };\n"
"\n"
" position = float4(positions[vertexID], 0.0, 1.0);\n"
" texCoord = texCoords[vertexID];\n"
"}";
// compile and create the vertex shader
comRef_defineLocal(ID3DBlob, byteCode);
if (!compileShader(byteCode, "main", "vs_5_0", vshaderSrc))
return false;
comRef_defineLocal(ID3D11VertexShader, vshader);
HRESULT status = ID3D11Device_CreateVertexShader(
*this->device,
ID3D10Blob_GetBufferPointer(*byteCode),
ID3D10Blob_GetBufferSize (*byteCode),
NULL,
vshader);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create the vertex shader", status);
return false;
}
comRef_toGlobal(this->vshader, vshader);
return true;
}
static bool dxgi_init(void)
{
DEBUG_ASSERT(this);
@ -758,6 +809,9 @@ static bool dxgi_init(void)
vector_create(&this->texture[i].pp, sizeof(PostProcessInstance), 0);
}
if (!initVertexShader())
goto fail;
const D3D11_VIEWPORT vp =
{
.TopLeftX = 0.0f,
@ -1371,8 +1425,24 @@ static ID3D11Texture2D * ppRun(Texture * tex, ID3D11Texture2D * src)
inst->src = src;
}
// set the vertex shader
ID3D11DeviceContext_VSSetShader(
*this->deviceContext, *this->vshader, NULL, 0);
// run the post processor
src = inst->pp->run(inst->opaque, inst->srv);
ID3D11Texture2D * out = inst->pp->run(inst->opaque, inst->srv);
// if the post processor returned a different texture then draw to run it
if (out == src)
continue;
// draw the full screen quad
ID3D11DeviceContext_IASetPrimitiveTopology(
*this->deviceContext, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
ID3D11DeviceContext_Draw(*this->deviceContext, 4, 0);
// the output is now the input
src = out;
}
return src;

1
host/platform/Windows/capture/DXGI/src/dxgi_capture.h
View File

@ -94,6 +94,7 @@ struct DXGIInterface
DXGI_FORMAT dxgiSrcFormat, dxgiFormat;
bool hdr;
DXGI_COLOR_SPACE_TYPE dxgiColorSpace;
ID3D11VertexShader ** vshader;
struct DXGICopyBackend * backend;
CaptureGetPointerBuffer getPointerBufferFn;

94
host/platform/Windows/capture/DXGI/src/pp/sdrwhitelevel.c
View File

@ -32,7 +32,6 @@ typedef struct SDRWhiteLevel
ID3D11Device ** device;
ID3D11DeviceContext ** context;
ID3D11VertexShader ** vshader;
ID3D11PixelShader ** pshader;
ID3D11SamplerState ** sampler;
ID3D11Buffer ** buffer;
@ -56,49 +55,6 @@ struct ShaderConsts
}
__attribute__((aligned(16)));
static const char * vshader =
"void main(\n"
" in uint vertexID : SV_VERTEXID,\n"
" out float4 position : SV_POSITION,\n"
" out float2 texCoord : TEXCOORD0)\n"
"{\n"
" float2 positions[4] =\n"
" {\n"
" float2(-1.0, 1.0),\n"
" float2( 1.0, 1.0),\n"
" float2(-1.0, -1.0),\n"
" float2( 1.0, -1.0)\n"
" };\n"
"\n"
" float2 texCoords[4] =\n"
" {\n"
" float2(0.0, 0.0),\n"
" float2(1.0, 0.0),\n"
" float2(0.0, 1.0),\n"
" float2(1.0, 1.0)\n"
" };\n"
"\n"
" position = float4(positions[vertexID], 0.0, 1.0);\n"
" texCoord = texCoords[vertexID];\n"
"}";
static const char * pshader =
"Texture2D gInputTexture : register(t0);\n"
"SamplerState gSamplerState : register(s0);\n"
"cbuffer gConsts : register(b0)\n"
"{\n"
" float SDRWhiteLevel;"
"};\n"
"\n"
"float4 main(\n"
" float4 position : SV_POSITION,\n"
" float2 texCoord : TEXCOORD0) : SV_TARGET"
"{\n"
" float4 color = gInputTexture.Sample(gSamplerState, texCoord);\n"
" color.rgb *= SDRWhiteLevel;\n"
" return color;\n"
"}\n";
static void updateConsts(void);
static bool sdrWhiteLevel_setup(
@ -132,34 +88,34 @@ static bool sdrWhiteLevel_setup(
goto exit;
}
// compile and create the vertex shader
static const char * pshaderSrc =
"Texture2D gInputTexture : register(t0);\n"
"SamplerState gSamplerState : register(s0);\n"
"cbuffer gConsts : register(b0)\n"
"{\n"
" float SDRWhiteLevel;"
"};\n"
"\n"
"float4 main(\n"
" float4 position : SV_POSITION,\n"
" float2 texCoord : TEXCOORD0) : SV_TARGET"
"{\n"
" float4 color = gInputTexture.Sample(gSamplerState, texCoord);\n"
" color.rgb *= SDRWhiteLevel;\n"
" return color;\n"
"}\n";
comRef_defineLocal(ID3DBlob, byteCode);
if (!compileShader(byteCode, "main", "vs_5_0", vshader))
goto exit;
status = ID3D11Device_CreateVertexShader(
*this.device,
ID3D10Blob_GetBufferPointer(*byteCode),
ID3D10Blob_GetBufferSize (*byteCode),
NULL,
(ID3D11VertexShader **)comRef_newGlobal(&this.vshader));
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create the vertex shader", status);
goto exit;
}
comRef_release(byteCode);
if (!compileShader(byteCode, "main", "ps_5_0", pshader))
if (!compileShader(byteCode, "main", "ps_5_0", pshaderSrc))
goto exit;
comRef_defineLocal(ID3D11PixelShader, pshader);
status = ID3D11Device_CreatePixelShader(
*this.device,
ID3D10Blob_GetBufferPointer(*byteCode),
ID3D10Blob_GetBufferSize (*byteCode),
NULL,
(ID3D11PixelShader **)comRef_newGlobal(&this.pshader));
pshader);
if (FAILED(status))
{
@ -167,6 +123,8 @@ static bool sdrWhiteLevel_setup(
goto exit;
}
comRef_toGlobal(this.pshader, pshader);
const D3D11_SAMPLER_DESC samplerDesc =
{
.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR,
@ -320,8 +278,7 @@ static ID3D11Texture2D * sdrWhiteLevel_run(void * opaque,
updateConsts();
// set the vertex and pixel shader
ID3D11DeviceContext_VSSetShader(*this.context, *this.vshader, NULL, 0);
// set the pixel shader & resource
ID3D11DeviceContext_PSSetShader(*this.context, *this.pshader, NULL, 0);
// set the pixel shader resources
@ -332,11 +289,6 @@ static ID3D11Texture2D * sdrWhiteLevel_run(void * opaque,
// set the render target
ID3D11DeviceContext_OMSetRenderTargets(*this.context, 1, inst->target, NULL);
ID3D11DeviceContext_IASetPrimitiveTopology(
*this.context, D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
ID3D11DeviceContext_Draw(*this.context, 4, 0);
return *inst->tex;
}