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[Feat] (MG_Backend, MG_Impl): expose experimental GL 4.6 CTS limits

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swung0x48
2026-07-30 23:00:13 -04:00
parent 77bd03d962
commit 7e8c32a063
10 changed files with 320 additions and 8 deletions
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MobileGL/MG_Backend/BackendObject.h
+7
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@@ -300,6 +300,13 @@ namespace MobileGL {
Float ViewportBoundsRangeMin = 0.0f;
Float ViewportBoundsRangeMax = 0.0f;
Int ViewportSubpixelBits = 0;
// GL 4.x fragment-interpolation offset limits. These defaults are the
// core minimums and are replaced by live GLES/Vulkan device limits.
Float MinFragmentInterpolationOffset = -0.5f;
// For four fractional bits the greatest required legal offset is
// 0.5 - 2^-4 = 0.4375 (GL 4.6 table 23.70).
Float MaxFragmentInterpolationOffset = 0.4375f;
Int FragmentInterpolationOffsetBits = 4;
Bool SupportsWideLines = false;
SizeT MaxShaderStorageBlockSize = 128 * 1024 * 1024;
Uint32 SubgroupSize = 0;
MobileGL/MG_Backend/DirectGLES/BackendObject_DirectGLES.cpp
+20 -1
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@@ -20,6 +20,7 @@
#include <MG_Util/Texture/TextureFormatProcessor.h>
#include <Config.h>
#include <algorithm>
#include <cmath>
#include <format>
namespace MobileGL::MG_Backend::DirectGLES {
@@ -603,7 +604,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
.ExtraVendor = Nullopt, // Extra vendor
.RendererGLInfo =
{
.TargetGLVersion = {3, 3, 0}, // Target OpenGL Version
.TargetGLVersion = {4, 6, 0}, // Experimental GL CTS target version
.TargetGLSLVersion = {4, 6, 0}, // Target Shading Language Version
// Baseline advertisement (no timer queries / anisotropy yet); reconciled
// once the ES capabilities exist, see UpdateAdvertisedCapabilityExtensions.
@@ -1034,6 +1035,24 @@ namespace MobileGL::MG_Backend::DirectGLES {
m_dynamicParameters.ViewportBoundsRangeMin = m_GLESCapabilities.ViewportBoundsRangeMin;
m_dynamicParameters.ViewportBoundsRangeMax = m_GLESCapabilities.ViewportBoundsRangeMax;
m_dynamicParameters.ViewportSubpixelBits = m_GLESCapabilities.ViewportSubpixelBits;
m_dynamicParameters.MinFragmentInterpolationOffset =
std::isfinite(m_GLESCapabilities.MinFragmentInterpolationOffset) &&
m_GLESCapabilities.MinFragmentInterpolationOffset <= -0.5f
? m_GLESCapabilities.MinFragmentInterpolationOffset
: -0.5f;
m_dynamicParameters.MaxFragmentInterpolationOffset = 0.4375f;
m_dynamicParameters.FragmentInterpolationOffsetBits = 4;
if (m_GLESCapabilities.FragmentInterpolationOffsetBits >= 4 &&
std::isfinite(m_GLESCapabilities.MaxFragmentInterpolationOffset)) {
const Float requiredMaxOffset =
0.5f - std::ldexp(1.0f, -m_GLESCapabilities.FragmentInterpolationOffsetBits);
if (m_GLESCapabilities.MaxFragmentInterpolationOffset >= requiredMaxOffset) {
m_dynamicParameters.MaxFragmentInterpolationOffset =
m_GLESCapabilities.MaxFragmentInterpolationOffset;
m_dynamicParameters.FragmentInterpolationOffsetBits =
m_GLESCapabilities.FragmentInterpolationOffsetBits;
}
}
m_dynamicParameters.SupportsWideLines =
m_GLESCapabilities.AliasedLineWidthRangeMax > 1.0f || m_GLESCapabilities.SmoothLineWidthRangeMax > 1.0f;
MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp
+19 -1
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@@ -18,6 +18,7 @@
#include "MG_Util/Texture/TextureFormatProcessor.h"
#include <Config.h>
#include <cmath>
#include <cstdlib>
#include <cstring>
@@ -505,7 +506,7 @@ namespace MobileGL::MG_Backend::DirectVulkan {
.ExtraVendor = Nullopt,
.RendererGLInfo =
{
.TargetGLVersion = {3, 3, 0},
.TargetGLVersion = {4, 6, 0}, // Experimental GL CTS target version
.TargetGLSLVersion = {4, 6, 0},
// Baseline advertisement (no shader subgroup, no timer queries); a
// live backend reconciles its copy in UpdateAdvertisedExtensions.
@@ -796,6 +797,23 @@ namespace MobileGL::MG_Backend::DirectVulkan {
m_dynamicParameters.ViewportBoundsRangeMin = m_vulkanCaps.ViewportBoundsRangeMin;
m_dynamicParameters.ViewportBoundsRangeMax = m_vulkanCaps.ViewportBoundsRangeMax;
m_dynamicParameters.ViewportSubpixelBits = m_vulkanCaps.ViewportSubpixelBits;
m_dynamicParameters.MinFragmentInterpolationOffset =
std::isfinite(m_vulkanCaps.MinFragmentInterpolationOffset) &&
m_vulkanCaps.MinFragmentInterpolationOffset <= -0.5f
? m_vulkanCaps.MinFragmentInterpolationOffset
: -0.5f;
m_dynamicParameters.MaxFragmentInterpolationOffset = 0.4375f;
m_dynamicParameters.FragmentInterpolationOffsetBits = 4;
if (m_vulkanCaps.FragmentInterpolationOffsetBits >= 4 &&
std::isfinite(m_vulkanCaps.MaxFragmentInterpolationOffset)) {
const Float requiredMaxOffset =
0.5f - std::ldexp(1.0f, -m_vulkanCaps.FragmentInterpolationOffsetBits);
if (m_vulkanCaps.MaxFragmentInterpolationOffset >= requiredMaxOffset) {
m_dynamicParameters.MaxFragmentInterpolationOffset = m_vulkanCaps.MaxFragmentInterpolationOffset;
m_dynamicParameters.FragmentInterpolationOffsetBits =
m_vulkanCaps.FragmentInterpolationOffsetBits;
}
}
m_dynamicParameters.SupportsWideLines = m_vulkanCaps.SupportsWideLines;
m_dynamicParameters.MaxShaderStorageBlockSize =
std::min(m_vulkanCaps.MaxShaderStorageBlockSize, kMaxAdvertisedShaderStorageBlockSize);