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Added variable rate shading.

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This commit is contained in:
Бранимир Караџић
2025-11-06 17:21:53 -08:00
parent 45df9833a9
commit 358223c63e
21 changed files with 681 additions and 211 deletions
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35
examples/09-hdr/hdr.cpp
View File

@@ -341,11 +341,11 @@ public:
showExampleDialog(this);
ImGui::SetNextWindowPos(
ImVec2(m_width - m_width / 5.0f - 10.0f, 10.0f)
ImVec2(m_width - m_width / 5.0f - 40.0f, 10.0f)
, ImGuiCond_FirstUseEver
);
ImGui::SetNextWindowSize(
ImVec2(m_width / 5.0f, m_height / 2.0f)
ImVec2(m_width / 5.0f + 30.0f, m_height / 2.0f)
, ImGuiCond_FirstUseEver
);
ImGui::Begin("Settings"
@@ -369,6 +369,26 @@ public:
ImGui::SliderFloat("Lum Avg", &lumAvg, 0.0f, 1.0f);
}
const bgfx::Caps* caps = bgfx::getCaps();
static const char* s_shadingRateName[] =
{
"1x1",
"1x2",
"2x1",
"2x2",
"2x4",
"4x2",
"4x4",
};
static_assert(bgfx::ShadingRate::Count == BX_COUNTOF(s_shadingRateName) );
static bgfx::ShadingRate::Enum shadingRate = bgfx::ShadingRate::Rate1x1;
ImGui::BeginDisabled(0 == (caps->supported & BGFX_CAPS_VARIABLE_RATE_SHADING) );
ImGui::Combo("Shading Rate", (int*)&shadingRate, s_shadingRateName, BX_COUNTOF(s_shadingRateName) );
ImGui::EndDisabled();
ImGui::End();
imguiEndFrame();
@@ -404,46 +424,55 @@ public:
bgfx::setViewClear(hdrSkybox, BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH, 0x303030ff, 1.0f, 0);
bgfx::setViewRect(hdrSkybox, 0, 0, bgfx::BackbufferRatio::Equal);
bgfx::setViewFrameBuffer(hdrSkybox, m_fbh);
bgfx::setViewShadingRate(hdrSkybox, shadingRate);
bgfx::setViewName(hdrMesh, "Mesh");
bgfx::setViewClear(hdrMesh, BGFX_CLEAR_DISCARD_DEPTH | BGFX_CLEAR_DISCARD_STENCIL);
bgfx::setViewRect(hdrMesh, 0, 0, bgfx::BackbufferRatio::Equal);
bgfx::setViewFrameBuffer(hdrMesh, m_fbh);
bgfx::setViewShadingRate(hdrMesh, shadingRate);
bgfx::setViewName(hdrLuminance, "Luminance");
bgfx::setViewRect(hdrLuminance, 0, 0, 128, 128);
bgfx::setViewFrameBuffer(hdrLuminance, m_lum[0]);
bgfx::setViewShadingRate(hdrLuminance, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrLumScale0, "Downscale luminance 0");
bgfx::setViewRect(hdrLumScale0, 0, 0, 64, 64);
bgfx::setViewFrameBuffer(hdrLumScale0, m_lum[1]);
bgfx::setViewShadingRate(hdrLumScale0, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrLumScale1, "Downscale luminance 1");
bgfx::setViewRect(hdrLumScale1, 0, 0, 16, 16);
bgfx::setViewFrameBuffer(hdrLumScale1, m_lum[2]);
bgfx::setViewShadingRate(hdrLumScale1, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrLumScale2, "Downscale luminance 2");
bgfx::setViewRect(hdrLumScale2, 0, 0, 4, 4);
bgfx::setViewFrameBuffer(hdrLumScale2, m_lum[3]);
bgfx::setViewShadingRate(hdrLumScale2, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrLumScale3, "Downscale luminance 3");
bgfx::setViewRect(hdrLumScale3, 0, 0, 1, 1);
bgfx::setViewFrameBuffer(hdrLumScale3, m_lum[4]);
bgfx::setViewShadingRate(hdrLumScale3, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrBrightness, "Brightness");
bgfx::setViewRect(hdrBrightness, 0, 0, bgfx::BackbufferRatio::Half);
bgfx::setViewFrameBuffer(hdrBrightness, m_bright);
bgfx::setViewShadingRate(hdrBrightness, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrVBlur, "Blur vertical");
bgfx::setViewRect(hdrVBlur, 0, 0, bgfx::BackbufferRatio::Eighth);
bgfx::setViewFrameBuffer(hdrVBlur, m_blur);
bgfx::setViewShadingRate(hdrVBlur, bgfx::ShadingRate::Rate1x1);
bgfx::setViewName(hdrHBlurTonemap, "Blur horizontal + tonemap");
bgfx::setViewRect(hdrHBlurTonemap, 0, 0, bgfx::BackbufferRatio::Equal);
bgfx::FrameBufferHandle invalid = BGFX_INVALID_HANDLE;
bgfx::setViewFrameBuffer(hdrHBlurTonemap, invalid);
bgfx::setViewShadingRate(hdrHBlurTonemap, bgfx::ShadingRate::Rate1x1);
const bgfx::Caps* caps = bgfx::getCaps();
float proj[16];
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f, 0.0f, caps->homogeneousDepth);

23
examples/18-ibl/ibl.cpp
View File

@@ -658,6 +658,26 @@ public:
ImGui::ColorWheel("Specular:", &m_settings.m_rgbSpec[0], 0.7f);
}
const bgfx::Caps* caps = bgfx::getCaps();
static const char* s_shadingRateName[] =
{
"1x1",
"1x2",
"2x1",
"2x2",
"2x4",
"4x2",
"4x4",
};
static_assert(bgfx::ShadingRate::Count == BX_COUNTOF(s_shadingRateName) );
static bgfx::ShadingRate::Enum shadingRate = bgfx::ShadingRate::Rate1x1;
ImGui::BeginDisabled(0 == (caps->supported & BGFX_CAPS_VARIABLE_RATE_SHADING) );
ImGui::Combo("Shading Rate", (int*)&shadingRate, s_shadingRateName, BX_COUNTOF(s_shadingRateName) );
ImGui::EndDisabled();
ImGui::End();
imguiEndFrame();
@@ -712,8 +732,6 @@ public:
float view[16];
bx::mtxIdentity(view);
const bgfx::Caps* caps = bgfx::getCaps();
float proj[16];
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f, 0.0, caps->homogeneousDepth);
bgfx::setViewTransform(0, view, proj);
@@ -722,6 +740,7 @@ public:
m_camera.mtxLookAt(view);
bx::mtxProj(proj, 45.0f, float(m_width)/float(m_height), 0.1f, 100.0f, caps->homogeneousDepth);
bgfx::setViewTransform(1, view, proj);
bgfx::setViewShadingRate(1, shadingRate);
// View rect.
bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );