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[Fix] (MG_Backend, MG_Impl/GLImpl, MG_Util): make anisotropic filtering actually reachable - advertise GL_EXT/ARB_texture_filter_anisotropic only where the host driver or the samplerAnisotropy device feature supports it, answer GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT from the backend limit, and honor the sampler state on DirectVulkan (feature enable, limit clamp, LINEAR-only gate, resolved value in the sampler cache key)

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swung0x48
2026-07-16 22:59:11 -04:00
parent e2f873c95c
commit d4922cb0fb
17 changed files with 207 additions and 29 deletions
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MobileGL/MG_Backend/DirectVulkan/BackendObject_DirectVulkan.cpp
+17 -3
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@@ -488,14 +488,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
.TargetGLSLVersion = {4, 6, 0},
// Baseline advertisement (no shader subgroup, no timer queries); a
// live backend reconciles its copy in UpdateAdvertisedExtensions.
.Extensions = BuildAdvertisedExtensions(false, false),
.Extensions = BuildAdvertisedExtensions(false, false, false),
.IsCompatibilityProfile = false
},
.StaticBackendCapability = {.AllowVSOnlyPrograms = false}};
return rendererInfo;
}
Vector<GLExtension> BuildAdvertisedExtensions(Bool shaderSubgroupSupported, Bool timerQueriesSupported) {
Vector<GLExtension> BuildAdvertisedExtensions(Bool shaderSubgroupSupported, Bool timerQueriesSupported,
Bool anisotropicFilteringSupported) {
Vector<GLExtension> extensions = {V_OpenGL30, V_OpenGL31, V_OpenGL32,
V_OpenGL33, E_GL_ARB_draw_buffers_blend, E_GL_ARB_compute_shader,
E_GL_ARB_shader_storage_buffer_object, E_GL_ARB_shader_image_load_store,
@@ -516,6 +517,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
if (timerQueriesSupported && !MG_Config::Features.DisableTimerQuery) {
extensions.push_back(E_GL_ARB_timer_query);
}
// Only advertised when the samplerAnisotropy device feature was granted: without it the
// sampler state is accepted but never applied, and an app trusting the string (LWJGL builds
// GLCapabilities from it) would think it enabled anisotropic filtering.
if (anisotropicFilteringSupported) {
extensions.push_back(E_GL_EXT_texture_filter_anisotropic);
extensions.push_back(E_GL_ARB_texture_filter_anisotropic);
}
return extensions;
}
@@ -630,7 +638,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
// run without a renderer; no timer query is advertised then. Rebuilding
// the whole list keeps re-runs idempotent.
m_rendererInfo.RendererGLInfo.Extensions = BuildAdvertisedExtensions(
m_vulkanCaps.SupportsShaderSubgroup, pVulkanRenderer && pVulkanRenderer->IsTimerQuerySupported());
m_vulkanCaps.SupportsShaderSubgroup, pVulkanRenderer && pVulkanRenderer->IsTimerQuerySupported(),
pVulkanRenderer && pVulkanRenderer->IsSamplerAnisotropySupported());
}
void BackendObject_DirectVulkan::UpdateDynamicBackendParameters() {
@@ -680,6 +689,11 @@ namespace MobileGL::MG_Backend::DirectVulkan {
m_dynamicParameters.UniformBufferOffsetAlignment = m_vulkanCaps.UniformBufferOffsetAlignment;
m_dynamicParameters.AliasedLineWidthRangeMin = m_vulkanCaps.AliasedLineWidthRangeMin;
m_dynamicParameters.AliasedLineWidthRangeMax = m_vulkanCaps.AliasedLineWidthRangeMax;
// Without the samplerAnisotropy feature the limit is unusable, so report 1.0 (no anisotropy)
// rather than a maximum the sampler manager will never apply.
m_dynamicParameters.MaxTextureMaxAnisotropy =
(pVulkanRenderer && pVulkanRenderer->IsSamplerAnisotropySupported()) ? m_vulkanCaps.MaxSamplerAnisotropy
: 1.0f;
m_dynamicParameters.SmoothLineWidthRangeMin = m_vulkanCaps.SmoothLineWidthRangeMin;
m_dynamicParameters.SmoothLineWidthRangeMax = m_vulkanCaps.SmoothLineWidthRangeMax;
m_dynamicParameters.SmoothLineWidthGranularity = m_vulkanCaps.SmoothLineWidthGranularity;