Implemented more flexible blending modes for accelerated renderers
This fixes bug 2594 - Propose new blend mode, SDL_BLENDMODE_BLEND_DSTA blendMode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA, SDL_BLENDOPERATION_ADD, SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_ADD); This fixes bug 2828 - Subtractive Blending blendMode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_SRC_ALPHA, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_SUBTRACT, SDL_BLENDFACTOR_ZERO, SDL_BLENDFACTOR_ONE, SDL_BLENDOPERATION_SUBTRACT); This goes partway to fixing bug 3684 - Add support for a pre-multiplied alpha blending mode blendMode = SDL_ComposeCustomBlendMode(SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA, SDL_BLENDOPERATION_ADD, SDL_BLENDFACTOR_ONE, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA, SDL_BLENDOPERATION_ADD);
This commit is contained in:
Sam Lantinga
parent
f8e1874d01
commit
c59d9923b3
16 changed files with 718 additions and 778 deletions
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@ -93,6 +93,13 @@ typedef struct
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SDL_Rect locked_rect;
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} D3D11_TextureData;
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/* Blend mode data */
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typedef struct
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{
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SDL_BlendMode blendMode;
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ID3D11BlendState *blendState;
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} D3D11_BlendMode;
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/* Private renderer data */
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typedef struct
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{
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@ -112,9 +119,8 @@ typedef struct
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ID3D11PixelShader *colorPixelShader;
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ID3D11PixelShader *texturePixelShader;
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ID3D11PixelShader *yuvPixelShader;
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ID3D11BlendState *blendModeBlend;
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ID3D11BlendState *blendModeAdd;
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ID3D11BlendState *blendModeMod;
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int blendModesCount;
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D3D11_BlendMode *blendModes;
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ID3D11SamplerState *nearestPixelSampler;
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ID3D11SamplerState *linearSampler;
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D3D_FEATURE_LEVEL featureLevel;
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@ -716,6 +722,7 @@ static const DWORD D3D11_VertexShader[] = {
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static SDL_Renderer *D3D11_CreateRenderer(SDL_Window * window, Uint32 flags);
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static void D3D11_WindowEvent(SDL_Renderer * renderer,
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const SDL_WindowEvent *event);
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static SDL_bool D3D11_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode);
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static int D3D11_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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static int D3D11_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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const SDL_Rect * rect, const void *srcPixels,
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@ -826,6 +833,7 @@ D3D11_CreateRenderer(SDL_Window * window, Uint32 flags)
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}
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renderer->WindowEvent = D3D11_WindowEvent;
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renderer->SupportsBlendMode = D3D11_SupportsBlendMode;
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renderer->CreateTexture = D3D11_CreateTexture;
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renderer->UpdateTexture = D3D11_UpdateTexture;
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renderer->UpdateTextureYUV = D3D11_UpdateTextureYUV;
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@ -898,6 +906,8 @@ D3D11_ReleaseAll(SDL_Renderer * renderer)
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/* Release/reset everything else */
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if (data) {
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int i;
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SAFE_RELEASE(data->dxgiFactory);
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SAFE_RELEASE(data->dxgiAdapter);
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SAFE_RELEASE(data->d3dDevice);
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@ -911,9 +921,14 @@ D3D11_ReleaseAll(SDL_Renderer * renderer)
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SAFE_RELEASE(data->colorPixelShader);
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SAFE_RELEASE(data->texturePixelShader);
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SAFE_RELEASE(data->yuvPixelShader);
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SAFE_RELEASE(data->blendModeBlend);
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SAFE_RELEASE(data->blendModeAdd);
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SAFE_RELEASE(data->blendModeMod);
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if (data->blendModesCount > 0) {
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for (i = 0; i < data->blendModesCount; ++i) {
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SAFE_RELEASE(data->blendModes[i].blendState);
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}
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SDL_free(data->blendModes);
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data->blendModesCount = 0;
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}
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SAFE_RELEASE(data->nearestPixelSampler);
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SAFE_RELEASE(data->linearSampler);
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SAFE_RELEASE(data->mainRasterizer);
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@ -954,37 +969,96 @@ D3D11_DestroyRenderer(SDL_Renderer * renderer)
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SDL_free(renderer);
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}
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static HRESULT
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D3D11_CreateBlendMode(SDL_Renderer * renderer,
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BOOL enableBlending,
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D3D11_BLEND srcBlend,
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D3D11_BLEND destBlend,
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D3D11_BLEND srcBlendAlpha,
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D3D11_BLEND destBlendAlpha,
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ID3D11BlendState ** blendStateOutput)
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static D3D11_BLEND GetBlendFunc(SDL_BlendFactor factor)
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{
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switch (factor) {
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case SDL_BLENDFACTOR_ZERO:
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return D3D11_BLEND_ZERO;
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case SDL_BLENDFACTOR_ONE:
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return D3D11_BLEND_ONE;
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case SDL_BLENDFACTOR_SRC_COLOR:
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return D3D11_BLEND_SRC_COLOR;
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case SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR:
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return D3D11_BLEND_INV_SRC_COLOR;
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case SDL_BLENDFACTOR_SRC_ALPHA:
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return D3D11_BLEND_SRC_ALPHA;
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case SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA:
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return D3D11_BLEND_INV_SRC_ALPHA;
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case SDL_BLENDFACTOR_DST_COLOR:
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return D3D11_BLEND_DEST_COLOR;
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case SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR:
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return D3D11_BLEND_INV_DEST_COLOR;
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case SDL_BLENDFACTOR_DST_ALPHA:
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return D3D11_BLEND_DEST_ALPHA;
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case SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA:
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return D3D11_BLEND_INV_DEST_ALPHA;
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default:
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return (D3D11_BLEND)0;
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}
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}
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static D3D11_BLEND_OP GetBlendEquation(SDL_BlendOperation operation)
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{
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switch (operation) {
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case SDL_BLENDOPERATION_ADD:
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return D3D11_BLEND_OP_ADD;
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case SDL_BLENDOPERATION_SUBTRACT:
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return D3D11_BLEND_OP_SUBTRACT;
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case SDL_BLENDOPERATION_REV_SUBTRACT:
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return D3D11_BLEND_OP_REV_SUBTRACT;
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case SDL_BLENDOPERATION_MINIMUM:
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return D3D11_BLEND_OP_MIN;
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case SDL_BLENDOPERATION_MAXIMUM:
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return D3D11_BLEND_OP_MAX;
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default:
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return (D3D11_BLEND_OP)0;
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}
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}
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static SDL_bool
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D3D11_CreateBlendState(SDL_Renderer * renderer, SDL_BlendMode blendMode)
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{
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D3D11_RenderData *data = (D3D11_RenderData *) renderer->driverdata;
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SDL_BlendFactor srcColorFactor = SDL_GetBlendModeSrcColorFactor(blendMode);
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SDL_BlendFactor srcAlphaFactor = SDL_GetBlendModeSrcAlphaFactor(blendMode);
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SDL_BlendOperation colorOperation = SDL_GetBlendModeColorOperation(blendMode);
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SDL_BlendFactor dstColorFactor = SDL_GetBlendModeDstColorFactor(blendMode);
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SDL_BlendFactor dstAlphaFactor = SDL_GetBlendModeDstAlphaFactor(blendMode);
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SDL_BlendOperation alphaOperation = SDL_GetBlendModeAlphaOperation(blendMode);
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ID3D11BlendState *blendState = NULL;
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D3D11_BlendMode *blendModes;
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HRESULT result = S_OK;
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D3D11_BLEND_DESC blendDesc;
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SDL_zero(blendDesc);
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blendDesc.AlphaToCoverageEnable = FALSE;
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blendDesc.IndependentBlendEnable = FALSE;
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blendDesc.RenderTarget[0].BlendEnable = enableBlending;
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blendDesc.RenderTarget[0].SrcBlend = srcBlend;
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blendDesc.RenderTarget[0].DestBlend = destBlend;
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blendDesc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
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blendDesc.RenderTarget[0].SrcBlendAlpha = srcBlendAlpha;
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blendDesc.RenderTarget[0].DestBlendAlpha = destBlendAlpha;
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blendDesc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
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blendDesc.RenderTarget[0].BlendEnable = TRUE;
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blendDesc.RenderTarget[0].SrcBlend = GetBlendFunc(srcColorFactor);
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blendDesc.RenderTarget[0].DestBlend = GetBlendFunc(dstColorFactor);
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blendDesc.RenderTarget[0].BlendOp = GetBlendEquation(colorOperation);
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blendDesc.RenderTarget[0].SrcBlendAlpha = GetBlendFunc(srcAlphaFactor);
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blendDesc.RenderTarget[0].DestBlendAlpha = GetBlendFunc(dstAlphaFactor);
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blendDesc.RenderTarget[0].BlendOpAlpha = GetBlendEquation(alphaOperation);
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blendDesc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
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result = ID3D11Device_CreateBlendState(data->d3dDevice, &blendDesc, blendStateOutput);
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result = ID3D11Device_CreateBlendState(data->d3dDevice, &blendDesc, &blendState);
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if (FAILED(result)) {
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WIN_SetErrorFromHRESULT(SDL_COMPOSE_ERROR("ID3D11Device1::CreateBlendState"), result);
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return result;
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return SDL_FALSE;
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}
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return S_OK;
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blendModes = (D3D11_BlendMode *)SDL_realloc(data->blendModes, (data->blendModesCount + 1) * sizeof(*blendModes));
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if (!blendModes) {
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SAFE_RELEASE(blendState);
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SDL_OutOfMemory();
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return SDL_FALSE;
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}
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blendModes[data->blendModesCount].blendMode = blendMode;
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blendModes[data->blendModesCount].blendState = blendState;
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data->blendModes = blendModes;
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++data->blendModesCount;
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return SDL_TRUE;
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}
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/* Create resources that depend on the device. */
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@ -1286,41 +1360,9 @@ D3D11_CreateDeviceResources(SDL_Renderer * renderer)
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}
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/* Create blending states: */
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result = D3D11_CreateBlendMode(
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renderer,
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TRUE,
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D3D11_BLEND_SRC_ALPHA, /* srcBlend */
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D3D11_BLEND_INV_SRC_ALPHA, /* destBlend */
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D3D11_BLEND_ONE, /* srcBlendAlpha */
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D3D11_BLEND_INV_SRC_ALPHA, /* destBlendAlpha */
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&data->blendModeBlend);
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if (FAILED(result)) {
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/* D3D11_CreateBlendMode will set the SDL error, if it fails */
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goto done;
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}
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result = D3D11_CreateBlendMode(
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renderer,
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TRUE,
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D3D11_BLEND_SRC_ALPHA, /* srcBlend */
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D3D11_BLEND_ONE, /* destBlend */
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D3D11_BLEND_ZERO, /* srcBlendAlpha */
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D3D11_BLEND_ONE, /* destBlendAlpha */
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&data->blendModeAdd);
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if (FAILED(result)) {
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/* D3D11_CreateBlendMode will set the SDL error, if it fails */
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goto done;
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}
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result = D3D11_CreateBlendMode(
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renderer,
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TRUE,
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D3D11_BLEND_ZERO, /* srcBlend */
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D3D11_BLEND_SRC_COLOR, /* destBlend */
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D3D11_BLEND_ZERO, /* srcBlendAlpha */
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D3D11_BLEND_ONE, /* destBlendAlpha */
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&data->blendModeMod);
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if (FAILED(result)) {
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if (!D3D11_CreateBlendState(renderer, SDL_BLENDMODE_BLEND) ||
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!D3D11_CreateBlendState(renderer, SDL_BLENDMODE_ADD) ||
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!D3D11_CreateBlendState(renderer, SDL_BLENDMODE_MOD)) {
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/* D3D11_CreateBlendMode will set the SDL error, if it fails */
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goto done;
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}
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@ -1694,6 +1736,25 @@ D3D11_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
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}
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}
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static SDL_bool
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D3D11_SupportsBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode)
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{
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SDL_BlendFactor srcColorFactor = SDL_GetBlendModeSrcColorFactor(blendMode);
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SDL_BlendFactor srcAlphaFactor = SDL_GetBlendModeSrcAlphaFactor(blendMode);
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SDL_BlendOperation colorOperation = SDL_GetBlendModeColorOperation(blendMode);
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SDL_BlendFactor dstColorFactor = SDL_GetBlendModeDstColorFactor(blendMode);
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SDL_BlendFactor dstAlphaFactor = SDL_GetBlendModeDstAlphaFactor(blendMode);
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SDL_BlendOperation alphaOperation = SDL_GetBlendModeAlphaOperation(blendMode);
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if (!GetBlendFunc(srcColorFactor) || !GetBlendFunc(srcAlphaFactor) ||
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!GetBlendEquation(colorOperation) ||
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!GetBlendFunc(dstColorFactor) || !GetBlendFunc(dstAlphaFactor) ||
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!GetBlendEquation(alphaOperation)) {
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return SDL_FALSE;
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}
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return SDL_TRUE;
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}
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static D3D11_FILTER
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GetScaleQuality(void)
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{
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@ -2443,19 +2504,21 @@ D3D11_RenderSetBlendMode(SDL_Renderer * renderer, SDL_BlendMode blendMode)
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{
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D3D11_RenderData *rendererData = (D3D11_RenderData *)renderer->driverdata;
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ID3D11BlendState *blendState = NULL;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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blendState = rendererData->blendModeBlend;
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break;
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case SDL_BLENDMODE_ADD:
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blendState = rendererData->blendModeAdd;
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break;
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case SDL_BLENDMODE_MOD:
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blendState = rendererData->blendModeMod;
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break;
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case SDL_BLENDMODE_NONE:
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blendState = NULL;
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break;
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if (blendMode != SDL_BLENDMODE_NONE) {
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int i;
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for (i = 0; i < rendererData->blendModesCount; ++i) {
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if (blendMode == rendererData->blendModes[i].blendMode) {
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blendState = rendererData->blendModes[i].blendState;
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break;
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}
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}
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if (!blendState) {
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if (D3D11_CreateBlendState(renderer, blendMode)) {
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/* Successfully created the blend state, try again */
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D3D11_RenderSetBlendMode(renderer, blendMode);
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}
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return;
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}
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}
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if (blendState != rendererData->currentBlendState) {
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ID3D11DeviceContext_OMSetBlendState(rendererData->d3dContext, blendState, 0, 0xFFFFFFFF);
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