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#include "drape_frontend/postprocess_renderer.hpp"
#include "drape_frontend/render_state_extension.hpp"
#include "drape_frontend/screen_quad_renderer.hpp"
#include "shaders/program_manager.hpp"
#include "drape/glsl_types.hpp"
#include "drape/graphics_context.hpp"
#include "drape/mesh_object.hpp"
#include "drape/texture_manager.hpp"
#include "drape/render_state.hpp"
#include "base/assert.hpp"
namespace df
{
namespace
{
class SMAABaseRenderParams
{
public:
explicit SMAABaseRenderParams(gpu::Program program)
: m_state(CreateRenderState(program, DepthLayer::GeometryLayer))
{
m_state.SetDepthTestEnabled(false);
m_state.SetBlending(dp::Blending(false));
}
virtual ~SMAABaseRenderParams() = default;
dp::RenderState const & GetRenderState() const { return m_state; }
gpu::SMAAProgramParams const & GetProgramParams() const { return m_params; }
protected:
dp::RenderState m_state;
gpu::SMAAProgramParams m_params;
};
class EdgesRenderParams : public SMAABaseRenderParams
{
using TBase = SMAABaseRenderParams;
public:
EdgesRenderParams(): TBase(gpu::Program::SmaaEdges) {}
void SetParams(ref_ptr<dp::Texture> texture, uint32_t width, uint32_t height)
{
m_state.SetTexture("u_colorTex", texture);
m_params.m_framebufferMetrics = glsl::vec4(1.0f / width, 1.0f / height,
static_cast<float>(width),
static_cast<float>(height));
}
};
class BlendingWeightRenderParams : public SMAABaseRenderParams
{
using TBase = SMAABaseRenderParams;
public:
BlendingWeightRenderParams() : TBase(gpu::Program::SmaaBlendingWeight) {}
void SetParams(ref_ptr<dp::Texture> edgesTexture, ref_ptr<dp::Texture> areaTexture,
ref_ptr<dp::Texture> searchTexture, uint32_t width, uint32_t height)
{
m_state.SetTexture("u_colorTex", edgesTexture);
m_state.SetTexture("u_smaaArea", areaTexture);
m_state.SetTexture("u_smaaSearch", searchTexture);
m_params.m_framebufferMetrics = glsl::vec4(1.0f / width, 1.0f / height,
static_cast<float>(width),
static_cast<float>(height));
}
};
class SMAAFinalRenderParams : public SMAABaseRenderParams
{
using TBase = SMAABaseRenderParams;
public:
SMAAFinalRenderParams(): TBase(gpu::Program::SmaaFinal) {}
void SetParams(ref_ptr<dp::Texture> colorTexture, ref_ptr<dp::Texture> blendingWeightTexture,
uint32_t width, uint32_t height)
{
m_state.SetTexture("u_colorTex", colorTexture);
m_state.SetTexture("u_blendingWeightTex", blendingWeightTexture);
m_params.m_framebufferMetrics = glsl::vec4(1.0f / width, 1.0f / height,
static_cast<float>(width),
static_cast<float>(height));
}
};
class DefaultScreenQuadRenderParams
{
public:
DefaultScreenQuadRenderParams()
: m_state(CreateRenderState(gpu::Program::ScreenQuad, DepthLayer::GeometryLayer))
{
m_state.SetDepthTestEnabled(false);
m_state.SetBlending(dp::Blending(false));
}
void SetParams(ref_ptr<dp::Texture> texture)
{
m_state.SetTexture("u_colorTex", texture);
}
dp::RenderState const & GetRenderState() const { return m_state; }
gpu::ScreenQuadProgramParams const & GetProgramParams() const { return m_params; }
private:
dp::RenderState m_state;
gpu::ScreenQuadProgramParams m_params;
};
void InitFramebuffer(ref_ptr<dp::GraphicsContext> context,
drape_ptr<dp::Framebuffer> & framebuffer,
uint32_t width, uint32_t height,
bool depthEnabled, bool stencilEnabled)
{
if (framebuffer == nullptr)
{
framebuffer = make_unique_dp<dp::Framebuffer>(dp::TextureFormat::RGBA8, depthEnabled,
stencilEnabled);
}
framebuffer->SetSize(context, width, height);
}
void InitFramebuffer(ref_ptr<dp::GraphicsContext> context,
drape_ptr<dp::Framebuffer> & framebuffer,
dp::TextureFormat colorFormat,
ref_ptr<dp::Framebuffer::DepthStencil> depthStencilRef,
uint32_t width, uint32_t height)
{
if (framebuffer == nullptr)
framebuffer = make_unique_dp<dp::Framebuffer>(colorFormat);
framebuffer->SetDepthStencilRef(std::move(depthStencilRef));
framebuffer->SetSize(context, width, height);
}
bool IsSupported(drape_ptr<dp::Framebuffer> const & framebuffer)
{
return framebuffer != nullptr && framebuffer->IsSupported();
}
} // namespace
PostprocessRenderer::~PostprocessRenderer()
{
ClearContextDependentResources();
}
void PostprocessRenderer::Init(ref_ptr<dp::GraphicsContext> context, dp::FramebufferFallback && fallback,
PrerenderFrame && prerenderFrame)
{
m_apiVersion = context->GetApiVersion();
m_screenQuadRenderer = make_unique_dp<ScreenQuadRenderer>(context);
m_framebufferFallback = std::move(fallback);
ASSERT(m_framebufferFallback != nullptr, ());
m_prerenderFrame = std::move(prerenderFrame);
ASSERT(m_prerenderFrame != nullptr, ());
}
void PostprocessRenderer::ClearContextDependentResources()
{
m_screenQuadRenderer.reset();
m_framebufferFallback = nullptr;
m_prerenderFrame = nullptr;
m_staticTextures.reset();
m_mainFramebuffer.reset();
m_isMainFramebufferRendered = false;
m_edgesFramebuffer.reset();
m_blendingWeightFramebuffer.reset();
m_smaaFramebuffer.reset();
m_isSmaaFramebufferRendered = false;
}
void PostprocessRenderer::Resize(ref_ptr<dp::GraphicsContext> context, uint32_t width, uint32_t height)
{
m_width = width;
m_height = height;
UpdateFramebuffers(context, m_width, m_height);
}
void PostprocessRenderer::SetStaticTextures(drape_ptr<PostprocessStaticTextures> && textures)
{
m_staticTextures = std::move(textures);
}
bool PostprocessRenderer::IsEnabled() const
{
// Do not use post processing in routing following mode by energy-saving reasons.
// For Metal rendering to the texture is more efficient,
// since nextDrawable will be requested later.
if (m_apiVersion != dp::ApiVersion::Metal && m_isRouteFollowingActive)
return false;
return IsSupported(m_mainFramebuffer);
}
void PostprocessRenderer::SetEffectEnabled(ref_ptr<dp::GraphicsContext> context,
Effect effect, bool enabled)
{
// Do not support AA for OpenGLES 2.0.
if (m_apiVersion == dp::ApiVersion::OpenGLES2 && effect == Effect::Antialiasing)
return;
auto const oldValue = m_effects;
auto const effectMask = static_cast<uint32_t>(effect);
m_effects = (m_effects & ~effectMask) | (enabled ? effectMask : 0);
if (m_width != 0 && m_height != 0 && oldValue != m_effects)
UpdateFramebuffers(context, m_width, m_height);
}
bool PostprocessRenderer::IsEffectEnabled(Effect effect) const
{
return (m_effects & static_cast<uint32_t>(effect)) > 0;
}
bool PostprocessRenderer::CanRenderAntialiasing() const
{
if (!IsEffectEnabled(Effect::Antialiasing))
return false;
if (!IsSupported(m_edgesFramebuffer) || !IsSupported(m_blendingWeightFramebuffer) ||
!IsSupported(m_smaaFramebuffer))
{
return false;
}
if (m_staticTextures == nullptr ||
m_staticTextures->m_smaaSearchTexture == nullptr ||
m_staticTextures->m_smaaAreaTexture == nullptr)
{
return false;
}
if (m_apiVersion == dp::ApiVersion::OpenGLES2 || m_apiVersion == dp::ApiVersion::OpenGLES3)
{
return m_staticTextures->m_smaaAreaTexture->GetID() != 0 &&
m_staticTextures->m_smaaSearchTexture->GetID() != 0;
}
return true;
}
bool PostprocessRenderer::BeginFrame(ref_ptr<dp::GraphicsContext> context, ScreenBase const & modelView,
bool activeFrame)
{
if (!IsEnabled())
{
CHECK(m_prerenderFrame != nullptr, ());
m_prerenderFrame(modelView);
CHECK(m_framebufferFallback != nullptr, ());
return m_framebufferFallback();
}
m_frameStarted = activeFrame || !m_isMainFramebufferRendered;
if (m_frameStarted)
{
CHECK(m_prerenderFrame != nullptr, ());
m_prerenderFrame(modelView);
context->SetFramebuffer(make_ref(m_mainFramebuffer));
}
if (m_frameStarted && CanRenderAntialiasing())
context->SetStencilTestEnabled(false);
m_isMainFramebufferRendered = true;
return m_frameStarted;
}
bool PostprocessRenderer::EndFrame(ref_ptr<dp::GraphicsContext> context,
ref_ptr<gpu::ProgramManager> gpuProgramManager,
dp::Viewport const & viewport)
{
if (!IsEnabled())
return true;
// Subpixel Morphological Antialiasing (SMAA).
if (m_frameStarted && CanRenderAntialiasing())
{
ASSERT(m_staticTextures->m_smaaAreaTexture != nullptr, ());
ASSERT(m_staticTextures->m_smaaSearchTexture != nullptr, ());
if (m_apiVersion == dp::ApiVersion::OpenGLES2 || m_apiVersion == dp::ApiVersion::OpenGLES3)
{
ASSERT_GREATER(m_staticTextures->m_smaaAreaTexture->GetID(), 0, ());
ASSERT_GREATER(m_staticTextures->m_smaaSearchTexture->GetID(), 0, ());
}
context->SetClearColor(dp::Color::Transparent());
context->SetStencilTestEnabled(true);
// Render edges to texture.
{
context->SetFramebuffer(make_ref(m_edgesFramebuffer));
context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit | dp::ClearBits::StencilBit /* storeBits */);
if (m_apiVersion == dp::ApiVersion::Metal || m_apiVersion == dp::ApiVersion::Vulkan)
context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::Greater);
else
context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::NotEqual);
context->SetStencilActions(dp::StencilFace::FrontAndBack, dp::StencilAction::Zero,
dp::StencilAction::Zero, dp::StencilAction::Replace);
context->SetStencilReferenceValue(1);
context->ApplyFramebuffer("SMAA edges");
viewport.Apply(context);
EdgesRenderParams params;
params.SetParams(m_mainFramebuffer->GetTexture(), m_width, m_height);
auto program = gpuProgramManager->GetProgram(params.GetRenderState().GetProgram<gpu::Program>());
m_screenQuadRenderer->Render(context, program, params.GetRenderState(), gpuProgramManager->GetParamsSetter(),
params.GetProgramParams());
}
// Render blending weight to texture.
{
context->SetFramebuffer(make_ref(m_blendingWeightFramebuffer));
context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit | dp::ClearBits::StencilBit /* storeBits */);
context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::Equal);
context->SetStencilActions(dp::StencilFace::FrontAndBack, dp::StencilAction::Keep,
dp::StencilAction::Keep, dp::StencilAction::Keep);
context->ApplyFramebuffer("SMAA blending");
viewport.Apply(context);
BlendingWeightRenderParams params;
params.SetParams(m_edgesFramebuffer->GetTexture(),
m_staticTextures->m_smaaAreaTexture,
m_staticTextures->m_smaaSearchTexture,
m_width, m_height);
auto program = gpuProgramManager->GetProgram(params.GetRenderState().GetProgram<gpu::Program>());
m_screenQuadRenderer->Render(context, program, params.GetRenderState(), gpuProgramManager->GetParamsSetter(),
params.GetProgramParams());
}
// SMAA final pass.
context->SetStencilTestEnabled(false);
{
context->SetFramebuffer(make_ref(m_smaaFramebuffer));
context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit /* storeBits */);
context->ApplyFramebuffer("SMAA final");
viewport.Apply(context);
SMAAFinalRenderParams params;
params.SetParams(m_mainFramebuffer->GetTexture(),
m_blendingWeightFramebuffer->GetTexture(),
m_width, m_height);
auto program = gpuProgramManager->GetProgram(params.GetRenderState().GetProgram<gpu::Program>());
m_screenQuadRenderer->Render(context, program, params.GetRenderState(), gpuProgramManager->GetParamsSetter(),
params.GetProgramParams());
m_isSmaaFramebufferRendered = true;
}
}
ref_ptr<dp::Framebuffer> finalFramebuffer;
if (m_isSmaaFramebufferRendered)
finalFramebuffer = make_ref(m_smaaFramebuffer);
else
finalFramebuffer = make_ref(m_mainFramebuffer);
CHECK(m_framebufferFallback != nullptr, ());
bool m_wasRendered = false;
if (m_framebufferFallback())
{
context->Clear(dp::ClearBits::ColorBit, dp::ClearBits::ColorBit /* storeBits */);
context->ApplyFramebuffer("Dynamic frame");
viewport.Apply(context);
DefaultScreenQuadRenderParams params;
params.SetParams(finalFramebuffer->GetTexture());
auto program = gpuProgramManager->GetProgram(params.GetRenderState().GetProgram<gpu::Program>());
m_screenQuadRenderer->Render(context, program, params.GetRenderState(), gpuProgramManager->GetParamsSetter(),
params.GetProgramParams());
m_wasRendered = true;
}
m_frameStarted = false;
return m_wasRendered;
}
void PostprocessRenderer::EnableWritingToStencil(ref_ptr<dp::GraphicsContext> context) const
{
if (!m_frameStarted || !CanRenderAntialiasing())
return;
context->SetStencilTestEnabled(true);
context->SetStencilFunction(dp::StencilFace::FrontAndBack, dp::TestFunction::Always);
context->SetStencilActions(dp::StencilFace::FrontAndBack, dp::StencilAction::Keep,
dp::StencilAction::Keep, dp::StencilAction::Replace);
}
void PostprocessRenderer::DisableWritingToStencil(ref_ptr<dp::GraphicsContext> context) const
{
if (!m_frameStarted || !CanRenderAntialiasing())
return;
context->SetStencilTestEnabled(false);
}
void PostprocessRenderer::UpdateFramebuffers(ref_ptr<dp::GraphicsContext> context,
uint32_t width, uint32_t height)
{
ASSERT_NOT_EQUAL(width, 0, ());
ASSERT_NOT_EQUAL(height, 0, ());
CHECK_EQUAL(m_apiVersion, context->GetApiVersion(), ());
InitFramebuffer(context, m_mainFramebuffer, width, height, true /* depthEnabled */,
m_apiVersion != dp::ApiVersion::OpenGLES2 /* stencilEnabled */);
m_isMainFramebufferRendered = false;
m_isSmaaFramebufferRendered = false;
if (!m_isRouteFollowingActive && IsEffectEnabled(Effect::Antialiasing))
{
CHECK_NOT_EQUAL(m_apiVersion, dp::ApiVersion::OpenGLES2, ());
InitFramebuffer(context, m_edgesFramebuffer, dp::TextureFormat::RedGreen,
m_mainFramebuffer->GetDepthStencilRef(),
width, height);
InitFramebuffer(context, m_blendingWeightFramebuffer, dp::TextureFormat::RGBA8,
m_mainFramebuffer->GetDepthStencilRef(),
width, height);
InitFramebuffer(context, m_smaaFramebuffer, dp::TextureFormat::RGBA8,
m_mainFramebuffer->GetDepthStencilRef(),
width, height);
}
else
{
m_edgesFramebuffer.reset();
m_blendingWeightFramebuffer.reset();
m_smaaFramebuffer.reset();
}
}
bool PostprocessRenderer::OnFramebufferFallback(ref_ptr<dp::GraphicsContext> context)
{
if (m_frameStarted)
{
context->SetFramebuffer(make_ref(m_mainFramebuffer));
return true;
}
return m_framebufferFallback();
}
void PostprocessRenderer::OnChangedRouteFollowingMode(ref_ptr<dp::GraphicsContext> context,
bool isRouteFollowingActive)
{
if (m_isRouteFollowingActive == isRouteFollowingActive)
return;
m_isRouteFollowingActive = isRouteFollowingActive;
if (m_width != 0 && m_height != 0)
UpdateFramebuffers(context, m_width, m_height);
}
StencilWriterGuard::StencilWriterGuard(ref_ptr<PostprocessRenderer> renderer,
ref_ptr<dp::GraphicsContext> context)
: m_renderer(std::move(renderer))
, m_context(std::move(context))
{
ASSERT(m_renderer != nullptr, ());
m_renderer->EnableWritingToStencil(m_context);
}
StencilWriterGuard::~StencilWriterGuard()
{
m_renderer->DisableWritingToStencil(m_context);
}
} // namespace df
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