PRIVATE void add_rect_path(SvgRectRenderObject* render_object, GraphicsPath* path){
COORDINATE x, y;
LENGTH width, height, rx, ry;
return_if_fail(render_object);
width = svg_rect_render_object_get_width(render_object);
height = svg_rect_render_object_get_height(render_object);
x = svg_rect_render_object_get_x(render_object);
y = svg_rect_render_object_get_y(render_object);
rx = svg_rect_render_object_get_rx(render_object);
ry = svg_rect_render_object_get_ry(render_object);
ADJUST_X(width);
ADJUST_Y(height);
ADJUST_X(x);
ADJUST_Y(y);
ADJUST_X(rx);
ADJUST_Y(ry);
if(rx.number == 0 || ry.number == 0){
rx.number = ry.number = 0;
}else{
if(rx.number > width.number / 2){
rx.number = width.number / 2;
}
if(ry.number > height.number / 2){
ry.number = height.number / 2;
}
}
path->StartFigure();
path->AddLine(x.number + rx.number, y.number, x.number + width.number - rx.number, y.number);//top border
path->AddArc(x.number + width.number - 2 * rx.number, y.number, 2 * rx.number, 2 * ry.number, -90, 90);//top right corner
path->AddLine(x.number + width.number, y.number + ry.number, x.number + width.number, y.number + height.number - ry.number);//right border
path->AddArc(x.number + width.number - 2 * rx.number, y.number + height.number - 2 * ry.number, 2 * rx.number, 2 * ry.number, 0, 90);//bottom right corner
path->AddLine(x.number + width.number - rx.number, y.number + height.number, x.number + rx.number, y.number + height.number);//bottom border
path->AddArc(x.number, y.number + height.number - 2 * ry.number, 2 * rx.number, 2 * ry.number, 90, 90);//bottom left corner
path->AddLine(x.number, y.number + height.number - ry.number, x.number, y.number + ry.number);//left border
path->AddArc(x.number, y.number, 2 * rx.number, 2 * ry.number, -180, 90);//top left corner
path->CloseFigure();
}
namespace Falcor
{
bool checkForViewportArray2Support()
{
#ifdef FALCOR_D3D
return false;
#elif defined FALCOR_VK
return false;
#else
#error Unknown API
#endif
}
struct Vertex
{
glm::vec2 screenPos;
glm::vec2 texCoord;
};
Buffer::SharedPtr FullScreenPass::spVertexBuffer;
Vao::SharedPtr FullScreenPass::spVao;
uint64_t FullScreenPass::sObjectCount = 0;
#ifdef FALCOR_VK
#define ADJUST_Y(a) (-(a))
#else
#define ADJUST_Y(a) a
#endif
static const Vertex kVertices[] =
{
{glm::vec2(-1, ADJUST_Y( 1)), glm::vec2(0, 0)},
{glm::vec2(-1, ADJUST_Y(-1)), glm::vec2(0, 1)},
{glm::vec2( 1, ADJUST_Y( 1)), glm::vec2(1, 0)},
{glm::vec2( 1, ADJUST_Y(-1)), glm::vec2(1, 1)},
};
#undef ADJUST_Y
static void initStaticObjects(Buffer::SharedPtr& pVB, Vao::SharedPtr& pVao)
{
// First time we got here. create VB and VAO
const uint32_t vbSize = (uint32_t)(sizeof(Vertex)*arraysize(kVertices));
pVB = Buffer::create(vbSize, Buffer::BindFlags::Vertex, Buffer::CpuAccess::Write, (void*)kVertices);
// create VAO
VertexLayout::SharedPtr pLayout = VertexLayout::create();
VertexBufferLayout::SharedPtr pBufLayout = VertexBufferLayout::create();
pBufLayout->addElement("POSITION", 0, ResourceFormat::RG32Float, 1, 0);
pBufLayout->addElement("TEXCOORD", 8, ResourceFormat::RG32Float, 1, 1);
pLayout->addBufferLayout(0, pBufLayout);
Vao::BufferVec buffers{ pVB };
pVao = Vao::create(Vao::Topology::TriangleStrip, pLayout, buffers);
}
FullScreenPass::~FullScreenPass()
{
#ifndef _AUTOTESTING
assert(sObjectCount > 0);
#endif
sObjectCount--;
if (sObjectCount == 0)
{
spVao = nullptr;
spVertexBuffer = nullptr;
}
}
FullScreenPass::UniquePtr FullScreenPass::create(const std::string& psFile, const Program::DefineList& programDefines, bool disableDepth, bool disableStencil, uint32_t viewportMask, bool enableSPS)
{
return create("", psFile, programDefines, disableDepth, disableStencil, viewportMask, enableSPS);
}
FullScreenPass::UniquePtr FullScreenPass::create(const std::string& vsFile, const std::string& psFile, const Program::DefineList& programDefines, bool disableDepth, bool disableStencil, uint32_t viewportMask, bool enableSPS)
{
UniquePtr pPass = UniquePtr(new FullScreenPass());
pPass->init(vsFile, psFile, programDefines, disableDepth, disableStencil, viewportMask, enableSPS);
return pPass;
}
void FullScreenPass::init(const std::string& vsFile, const std::string& psFile, const Program::DefineList& programDefines, bool disableDepth, bool disableStencil, uint32_t viewportMask, bool enableSPS)
{
mpPipelineState = GraphicsState::create();
mpPipelineState->toggleSinglePassStereo(enableSPS);
// create depth stencil state
DepthStencilState::Desc dsDesc;
dsDesc.setDepthTest(!disableDepth);
dsDesc.setDepthWriteMask(!disableDepth);
dsDesc.setDepthFunc(DepthStencilState::Func::LessEqual); // Equal is needed to allow overdraw when z is enabled (e.g., background pass etc.)
dsDesc.setStencilTest(!disableStencil);
dsDesc.setStencilWriteMask(!disableStencil);
mpDepthStencilState = DepthStencilState::create(dsDesc);
Program::DefineList defs = programDefines;
std::string gs;
if(viewportMask)
{
defs.add("_VIEWPORT_MASK", std::to_string(viewportMask));
if(checkForViewportArray2Support())
{
defs.add("_USE_VP2_EXT");
}
else
{
defs.add("_OUTPUT_VERTEX_COUNT", std::to_string(3 * __popcnt(viewportMask)));
#ifdef FALCOR_VK
gs = "Framework/Shaders/FullScreenPass.gs.glsl";
#else
gs = "Framework/Shaders/FullScreenPass.gs.slang";
#endif
}
}
const std::string vs(vsFile.empty() ? "Framework/Shaders/FullScreenPass.vs.slang" : vsFile);
mpProgram = GraphicsProgram::createFromFile(vs, psFile, gs, "", "", defs);
mpPipelineState->setProgram(mpProgram);
if (FullScreenPass::spVertexBuffer == nullptr)
{
initStaticObjects(spVertexBuffer, spVao);
}
mpPipelineState->setVao(FullScreenPass::spVao);
}
void FullScreenPass::execute(RenderContext* pRenderContext, DepthStencilState::SharedPtr pDsState) const
{
mpPipelineState->pushFbo(pRenderContext->getGraphicsState()->getFbo(), false);
mpPipelineState->setViewport(0, pRenderContext->getGraphicsState()->getViewport(0), false);
mpPipelineState->setScissors(0, pRenderContext->getGraphicsState()->getScissors(0));
mpPipelineState->setVao(spVao);
mpPipelineState->setDepthStencilState(pDsState ? pDsState : mpDepthStencilState);
pRenderContext->pushGraphicsState(mpPipelineState);
pRenderContext->draw(arraysize(kVertices), 0);
pRenderContext->popGraphicsState();
mpPipelineState->popFbo(false);
}
}
