OGL: Add support for glDepthRangedNV to handle oversized depth ranges.

Source/Core/Common/Common.vcxproj

@@ -105,6 +105,7 @@
     <ClInclude Include="GL\GLExtensions\gl_common.h" />
     <ClInclude Include="GL\GLExtensions\HP_occlusion_test.h" />
     <ClInclude Include="GL\GLExtensions\KHR_debug.h" />
+    <ClInclude Include="GL\GLExtensions\NV_depth_buffer_float.h" />
     <ClInclude Include="GL\GLExtensions\NV_occlusion_query_samples.h" />
     <ClInclude Include="GL\GLExtensions\NV_primitive_restart.h" />
     <ClInclude Include="GL\GLInterfaceBase.h" />

Source/Core/Common/Common.vcxproj.filters

@@ -218,6 +218,9 @@
     <ClInclude Include="GL\GLExtensions\NV_primitive_restart.h">
       <Filter>GL\GLExtensions</Filter>
     </ClInclude>
+    <ClInclude Include="GL\GLExtensions\NV_depth_buffer_float.h">
+      <Filter>GL\GLExtensions</Filter>
+    </ClInclude>
     <ClInclude Include="GL\GLInterface\WGL.h">
       <Filter>GL\GLInterface</Filter>
     </ClInclude>

Source/Core/Common/GL/GLExtensions/GLExtensions.cpp

@@ -984,6 +984,11 @@ PFNDOLCOPYIMAGESUBDATAPROC dolCopyImageSubData;
 // ARB_shader_storage_buffer_object
 PFNDOLSHADERSTORAGEBLOCKBINDINGPROC dolShaderStorageBlockBinding;
 
+// NV_depth_buffer_float
+PFNDOLDEPTHRANGEDNVPROC dolDepthRangedNV;
+PFNDOLCLEARDEPTHDNVPROC dolClearDepthdNV;
+PFNDOLDEPTHBOUNDSDNVPROC dolDepthBoundsdNV;
+
 // Creates a GLFunc object that requires a feature
 #define GLFUNC_REQUIRES(x, y)                                                                      \
   {                                                                                                \
@@ -1838,6 +1843,11 @@ const GLFunc gl_function_array[] = {
 
     // ARB_shader_storage_buffer_object
     GLFUNC_REQUIRES(glShaderStorageBlockBinding, "ARB_shader_storage_buffer_object !VERSION_4_3"),
+
+    // NV_depth_buffer_float
+    GLFUNC_REQUIRES(glDepthRangedNV, "GL_NV_depth_buffer_float"),
+    GLFUNC_REQUIRES(glClearDepthdNV, "GL_NV_depth_buffer_float"),
+    GLFUNC_REQUIRES(glDepthBoundsdNV, "GL_NV_depth_buffer_float"),
 };
 
 namespace GLExtensions
@@ -2060,26 +2070,21 @@ static void InitExtensionList()
       // Quite a lot of these had their names changed when merged in to core
       // Disable the ones that have
       std::string gl300exts[] = {
-          "GL_ARB_map_buffer_range",
+          "GL_ARB_map_buffer_range", "GL_ARB_color_buffer_float", "GL_ARB_texture_float",
+          "GL_ARB_half_float_pixel", "GL_ARB_framebuffer_object", "GL_ARB_texture_float",
+          "GL_ARB_vertex_array_object", "GL_NV_depth_buffer_float",
+          //"GL_EXT_texture_integer",
           //"GL_EXT_gpu_shader4",
           //"GL_APPLE_flush_buffer_range",
-          "GL_ARB_color_buffer_float",
-          //"GL_NV_depth_buffer_float",
-          "GL_ARB_texture_float",
           //"GL_EXT_packed_float",
           //"GL_EXT_texture_shared_exponent",
-          "GL_ARB_half_float_pixel",
           //"GL_NV_half_float",
-          "GL_ARB_framebuffer_object",
           //"GL_EXT_framebuffer_sRGB",
-          "GL_ARB_texture_float",
-          //"GL_EXT_texture_integer",
           //"GL_EXT_draw_buffers2",
           //"GL_EXT_texture_integer",
           //"GL_EXT_texture_array",
           //"GL_EXT_texture_compression_rgtc",
           //"GL_EXT_transform_feedback",
-          "GL_ARB_vertex_array_object",
           //"GL_NV_conditional_render",
           "VERSION_3_0",
       };

Source/Core/Common/GL/GLExtensions/GLExtensions.h

@@ -31,6 +31,7 @@
 #include "Common/GL/GLExtensions/EXT_texture_filter_anisotropic.h"
 #include "Common/GL/GLExtensions/HP_occlusion_test.h"
 #include "Common/GL/GLExtensions/KHR_debug.h"
+#include "Common/GL/GLExtensions/NV_depth_buffer_float.h"
 #include "Common/GL/GLExtensions/NV_occlusion_query_samples.h"
 #include "Common/GL/GLExtensions/NV_primitive_restart.h"
 #include "Common/GL/GLExtensions/gl_1_1.h"

Source/Core/Common/GL/GLExtensions/NV_depth_buffer_float.h

@@ -0,0 +1,41 @@
+/*
+** Copyright (c) 2013-2015 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+#include "Common/GL/GLExtensions/gl_common.h"
+
+#define GL_DEPTH_COMPONENT32F_NV 0x8DAB
+#define GL_DEPTH32F_STENCIL8_NV 0x8DAC
+#define GL_FLOAT_32_UNSIGNED_INT_24_8_REV_NV 0x8DAD
+#define GL_DEPTH_BUFFER_FLOAT_MODE_NV 0x8DAF
+
+typedef void(APIENTRYP PFNDOLDEPTHRANGEDNVPROC)(GLdouble zNear, GLdouble zFar);
+typedef void(APIENTRYP PFNDOLCLEARDEPTHDNVPROC)(GLdouble depth);
+typedef void(APIENTRYP PFNDOLDEPTHBOUNDSDNVPROC)(GLdouble zmin, GLdouble zmax);
+
+extern PFNDOLDEPTHRANGEDNVPROC dolDepthRangedNV;
+extern PFNDOLCLEARDEPTHDNVPROC dolClearDepthdNV;
+extern PFNDOLDEPTHBOUNDSDNVPROC dolDepthBoundsdNV;
+
+#define glDepthRangedNV dolDepthRangedNV
+#define glClearDepthdNV dolClearDepthdNV
+#define glDepthBoundsdNV dolDepthBoundsdNV

Source/Core/Core/Analytics.cpp

@@ -234,6 +234,8 @@ void DolphinAnalytics::MakePerGameBuilder()
   builder.AddData("gpu-has-dual-source-blend", g_Config.backend_info.bSupportsDualSourceBlend);
   builder.AddData("gpu-has-primitive-restart", g_Config.backend_info.bSupportsPrimitiveRestart);
   builder.AddData("gpu-has-oversized-viewports", g_Config.backend_info.bSupportsOversizedViewports);
+  builder.AddData("gpu-has-oversized-depth-ranges",
+                  g_Config.backend_info.bSupportsOversizedDepthRanges);
   builder.AddData("gpu-has-geometry-shaders", g_Config.backend_info.bSupportsGeometryShaders);
   builder.AddData("gpu-has-3d-vision", g_Config.backend_info.bSupports3DVision);
   builder.AddData("gpu-has-early-z", g_Config.backend_info.bSupportsEarlyZ);

Source/Core/VideoBackends/D3D/main.cpp

@@ -64,6 +64,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsDualSourceBlend = true;
   g_Config.backend_info.bSupportsPrimitiveRestart = true;
   g_Config.backend_info.bSupportsOversizedViewports = false;
+  g_Config.backend_info.bSupportsOversizedDepthRanges = false;
   g_Config.backend_info.bSupportsGeometryShaders = true;
   g_Config.backend_info.bSupports3DVision = true;
   g_Config.backend_info.bSupportsPostProcessing = false;

Source/Core/VideoBackends/D3D12/main.cpp

@@ -68,6 +68,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsDualSourceBlend = true;
   g_Config.backend_info.bSupportsPrimitiveRestart = true;
   g_Config.backend_info.bSupportsOversizedViewports = false;
+  g_Config.backend_info.bSupportsOversizedDepthRanges = false;
   g_Config.backend_info.bSupportsGeometryShaders = true;
   g_Config.backend_info.bSupports3DVision = true;
   g_Config.backend_info.bSupportsPostProcessing = false;

Source/Core/VideoBackends/Null/NullBackend.cpp

@@ -28,6 +28,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsDualSourceBlend = true;
   g_Config.backend_info.bSupportsPrimitiveRestart = true;
   g_Config.backend_info.bSupportsOversizedViewports = true;
+  g_Config.backend_info.bSupportsOversizedDepthRanges = false;
   g_Config.backend_info.bSupportsGeometryShaders = true;
   g_Config.backend_info.bSupports3DVision = false;
   g_Config.backend_info.bSupportsEarlyZ = true;

Source/Core/VideoBackends/OGL/Render.cpp

@@ -474,6 +474,8 @@ Renderer::Renderer()
 
   // Clip distance support is useless without a method to clamp the depth range
   g_Config.backend_info.bSupportsDepthClamp = GLExtensions::Supports("GL_ARB_depth_clamp");
+  g_Config.backend_info.bSupportsOversizedDepthRanges =
+      GLExtensions::Supports("GL_NV_depth_buffer_float");
 
   g_ogl_config.bSupportsGLSLCache = GLExtensions::Supports("GL_ARB_get_program_binary");
   g_ogl_config.bSupportsGLPinnedMemory = GLExtensions::Supports("GL_AMD_pinned_memory");
@@ -666,7 +668,7 @@ Renderer::Renderer()
                                    g_ogl_config.gl_renderer, g_ogl_config.gl_version),
                   5000);
 
-  WARN_LOG(VIDEO, "Missing OGL Extensions: %s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+  WARN_LOG(VIDEO, "Missing OGL Extensions: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
            g_ActiveConfig.backend_info.bSupportsDualSourceBlend ? "" : "DualSourceBlend ",
            g_ActiveConfig.backend_info.bSupportsPrimitiveRestart ? "" : "PrimitiveRestart ",
            g_ActiveConfig.backend_info.bSupportsEarlyZ ? "" : "EarlyZ ",
@@ -679,7 +681,8 @@ Renderer::Renderer()
            g_ActiveConfig.backend_info.bSupportsGSInstancing ? "" : "GSInstancing ",
            g_ActiveConfig.backend_info.bSupportsClipControl ? "" : "ClipControl ",
            g_ogl_config.bSupportsCopySubImage ? "" : "CopyImageSubData ",
-           g_ActiveConfig.backend_info.bSupportsDepthClamp ? "" : "DepthClamp ");
+           g_ActiveConfig.backend_info.bSupportsDepthClamp ? "" : "DepthClamp ",
+           g_ActiveConfig.backend_info.bSupportsOversizedDepthRanges ? "" : "DepthRangedNV ");
 
   s_last_multisamples = g_ActiveConfig.iMultisamples;
   s_MSAASamples = s_last_multisamples;
@@ -1108,10 +1111,6 @@ void Renderer::SetViewport()
                           (float)scissorYOff);
   float Width = EFBToScaledXf(2.0f * xfmem.viewport.wd);
   float Height = EFBToScaledYf(-2.0f * xfmem.viewport.ht);
-  float range = MathUtil::Clamp<float>(xfmem.viewport.zRange, -16777215.0f, 16777215.0f);
-  float min_depth =
-      MathUtil::Clamp<float>(xfmem.viewport.farZ - range, 0.0f, 16777215.0f) / 16777216.0f;
-  float max_depth = MathUtil::Clamp<float>(xfmem.viewport.farZ, 0.0f, 16777215.0f) / 16777216.0f;
   if (Width < 0)
   {
     X += Width;
@@ -1123,24 +1122,6 @@ void Renderer::SetViewport()
     Height *= -1;
   }
 
-  // If an oversized depth range is used, we need to calculate the depth range in the vertex shader.
-  if (g_ActiveConfig.backend_info.bSupportsDepthClamp &&
-      (fabs(xfmem.viewport.zRange) > 16777215.0f || fabs(xfmem.viewport.farZ) > 16777215.0f))
-  {
-    // We need to ensure depth values are clamped the maximum value supported by the console GPU.
-    // Taking into account whether the depth range is inverted or not.
-    if (xfmem.viewport.zRange < 0.0f)
-    {
-      min_depth = GX_MAX_DEPTH;
-      max_depth = 0.0f;
-    }
-    else
-    {
-      min_depth = 0.0f;
-      max_depth = GX_MAX_DEPTH;
-    }
-  }
-
   // Update the view port
   if (g_ogl_config.bSupportViewportFloat)
   {
@@ -1153,7 +1134,40 @@ void Renderer::SetViewport()
   }
 
   // Set the reversed depth range.
-  glDepthRangef(max_depth, min_depth);
+  if (g_ActiveConfig.backend_info.bSupportsOversizedDepthRanges)
+  {
+    float min_depth = (xfmem.viewport.farZ - xfmem.viewport.zRange) / 16777216.0f;
+    float max_depth = xfmem.viewport.farZ / 16777216.0f;
+    glDepthRangedNV(max_depth, min_depth);
+  }
+  else
+  {
+    float range = MathUtil::Clamp<float>(xfmem.viewport.zRange, -16777216.0f, 16777216.0f);
+    float min_depth =
+        MathUtil::Clamp<float>(xfmem.viewport.farZ - range, 0.0f, 16777215.0f) / 16777216.0f;
+    float max_depth = MathUtil::Clamp<float>(xfmem.viewport.farZ, 0.0f, 16777215.0f) / 16777216.0f;
+
+    // If an oversized depth range is used, we need to calculate the depth range in the
+    // vertex shader.
+    if (g_ActiveConfig.backend_info.bSupportsDepthClamp &&
+        (fabs(xfmem.viewport.zRange) > 16777215.0f || fabs(xfmem.viewport.farZ) > 16777215.0f))
+    {
+      // We need to ensure depth values are clamped the maximum value supported by the console GPU.
+      // Taking into account whether the depth range is inverted or not.
+      if (xfmem.viewport.zRange < 0.0f)
+      {
+        min_depth = GX_MAX_DEPTH;
+        max_depth = 0.0f;
+      }
+      else
+      {
+        min_depth = 0.0f;
+        max_depth = GX_MAX_DEPTH;
+      }
+    }
+
+    glDepthRangef(max_depth, min_depth);
+  }
 }
 
 void Renderer::ClearScreen(const EFBRectangle& rc, bool colorEnable, bool alphaEnable, bool zEnable,

Source/Core/VideoBackends/OGL/main.cpp

@@ -107,6 +107,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsInternalResolutionFrameDumps = true;
 
   // Overwritten in Render.cpp later
+  g_Config.backend_info.bSupportsOversizedDepthRanges = false;
   g_Config.backend_info.bSupportsDualSourceBlend = true;
   g_Config.backend_info.bSupportsPrimitiveRestart = true;
   g_Config.backend_info.bSupportsPaletteConversion = true;

Source/Core/VideoBackends/Software/SWmain.cpp

@@ -128,6 +128,7 @@ void VideoSoftware::InitBackendInfo()
   g_Config.backend_info.bSupportsDualSourceBlend = true;
   g_Config.backend_info.bSupportsEarlyZ = true;
   g_Config.backend_info.bSupportsOversizedViewports = true;
+  g_Config.backend_info.bSupportsOversizedDepthRanges = true;
   g_Config.backend_info.bSupportsPrimitiveRestart = false;
   g_Config.backend_info.bSupportsMultithreading = false;
   g_Config.backend_info.bSupportsInternalResolutionFrameDumps = false;

Source/Core/VideoBackends/Vulkan/VulkanContext.cpp

@@ -225,15 +225,16 @@ VulkanContext::GPUList VulkanContext::EnumerateGPUs(VkInstance instance)
 void VulkanContext::PopulateBackendInfo(VideoConfig* config)
 {
   config->backend_info.api_type = APIType::Vulkan;
-  config->backend_info.bSupportsExclusiveFullscreen = false;  // Currently WSI does not allow this.
+  config->backend_info.bSupportsExclusiveFullscreen = false;   // Currently WSI does not allow this.
-  config->backend_info.bSupports3DVision = false;             // D3D-exclusive.
+  config->backend_info.bSupports3DVision = false;              // D3D-exclusive.
-  config->backend_info.bSupportsOversizedViewports = true;    // Assumed support.
+  config->backend_info.bSupportsOversizedViewports = true;     // Assumed support.
-  config->backend_info.bSupportsEarlyZ = true;                // Assumed support.
+  config->backend_info.bSupportsOversizedDepthRanges = false;  // No support yet.
-  config->backend_info.bSupportsPrimitiveRestart = true;      // Assumed support.
+  config->backend_info.bSupportsEarlyZ = true;                 // Assumed support.
-  config->backend_info.bSupportsBindingLayout = false;        // Assumed support.
+  config->backend_info.bSupportsPrimitiveRestart = true;       // Assumed support.
-  config->backend_info.bSupportsPaletteConversion = true;     // Assumed support.
+  config->backend_info.bSupportsBindingLayout = false;         // Assumed support.
-  config->backend_info.bSupportsClipControl = true;           // Assumed support.
+  config->backend_info.bSupportsPaletteConversion = true;      // Assumed support.
-  config->backend_info.bSupportsMultithreading = true;        // Assumed support.
+  config->backend_info.bSupportsClipControl = true;            // Assumed support.
+  config->backend_info.bSupportsMultithreading = true;         // Assumed support.
   config->backend_info.bSupportsInternalResolutionFrameDumps = true;  // Assumed support.
   config->backend_info.bSupportsPostProcessing = false;               // No support yet.
   config->backend_info.bSupportsDualSourceBlend = false;              // Dependent on features.

Source/Core/VideoCommon/VertexShaderManager.cpp

@@ -391,7 +391,8 @@ void VertexShaderManager::SetConstants()
     constants.pixelcentercorrection[2] = 1.0f;
     constants.pixelcentercorrection[3] = 0.0f;
 
-    if (g_ActiveConfig.backend_info.bSupportsDepthClamp)
+    if (g_ActiveConfig.backend_info.bSupportsDepthClamp &&
+        !g_ActiveConfig.backend_info.bSupportsOversizedDepthRanges)
     {
       // Oversized depth ranges are handled in the vertex shader. We need to reverse
       // the far value to get a reversed depth range mapping. This is necessary

Source/Core/VideoCommon/VideoConfig.h

@@ -172,6 +172,7 @@ struct VideoConfig final
     bool bSupportsDualSourceBlend;
     bool bSupportsPrimitiveRestart;
     bool bSupportsOversizedViewports;
+    bool bSupportsOversizedDepthRanges;
     bool bSupportsGeometryShaders;
     bool bSupports3DVision;
     bool bSupportsEarlyZ;         // needed by PixelShaderGen, so must stay in VideoCommon