OcclusionQuery renamed to GpuQuery, and added query modes

Former-commit-id: b36a9b623653ac9b1eb422b09b3781ef46b81aca

include/Nazara/Renderer/Enums.hpp

@@ -51,6 +51,18 @@ enum nzFaceFilling
 	nzFaceFilling_Max = nzFaceFilling_Fill
 };
 
+enum nzGpuQueryMode
+{
+	nzGpuQueryMode_AnySamplesPassed,
+	nzGpuQueryMode_AnySamplesPassedConservative,
+	nzGpuQueryMode_PrimitiveGenerated,
+	nzGpuQueryMode_SamplesPassed,
+	nzGpuQueryMode_TimeElapsed,
+	nzGpuQueryMode_TransformFeedbackPrimitivesWritten,
+
+	nzGpuQueryMode_Max = nzGpuQueryMode_TransformFeedbackPrimitivesWritten
+};
+
 enum nzMatrixType
 {
 	// Matrices de base

include/Nazara/Renderer/GpuQuery.hpp

@@ -4,29 +4,31 @@
 
 #pragma once
 
-#ifndef NAZARA_OCCLUSIONQUERY_HPP
-#define NAZARA_OCCLUSIONQUERY_HPP
+#ifndef NAZARA_GPUQUERY_HPP
+#define NAZARA_GPUQUERY_HPP
 
 #include <Nazara/Prerequesites.hpp>
 #include <Nazara/Core/NonCopyable.hpp>
+#include <Nazara/Renderer/Enums.hpp>
 
-class NAZARA_API NzOcclusionQuery : NzNonCopyable
+class NAZARA_API NzGpuQuery : NzNonCopyable
 {
 	public:
-		NzOcclusionQuery();
-		~NzOcclusionQuery();
+		NzGpuQuery();
+		~NzGpuQuery();
 
-		void Begin();
+		void Begin(nzGpuQueryMode mode);
 		void End();
 
 		unsigned int GetResult() const;
 
 		bool IsResultAvailable() const;
 
+		static bool IsModeSupported(nzGpuQueryMode mode);
 		static bool IsSupported();
 
 	private:
 		unsigned int m_id;
 };
 
-#endif // NAZARA_OCCLUSIONQUERY_HPP
+#endif // NAZARA_GPUQUERY_HPP

include/Nazara/Renderer/OpenGL.hpp

@@ -135,6 +135,7 @@ class NAZARA_API NzOpenGL
 		static GLenum FaceCulling[nzFaceCulling_Max+1];
 		static GLenum FaceFilling[nzFaceFilling_Max+1];
 		static GLenum PrimitiveMode[nzPrimitiveMode_Max+1];
+		static GLenum QueryMode[nzGpuQueryMode_Max+1];
 		static GLenum RendererComparison[nzRendererComparison_Max+1];
 		static GLenum RendererParameter[nzRendererParameter_Max+1];
 		static GLenum SamplerWrapMode[nzSamplerWrap_Max+1];

src/Nazara/Renderer/GpuQuery.cpp

@@ -2,7 +2,7 @@
 // This file is part of the "Nazara Engine - Renderer module"
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
-#include <Nazara/Renderer/OcclusionQuery.hpp>
+#include <Nazara/Renderer/GpuQuery.hpp>
 #include <Nazara/Core/Error.hpp>
 #include <Nazara/Renderer/Config.hpp>
 #include <Nazara/Renderer/Context.hpp>
@@ -11,7 +11,7 @@
 #include <stdexcept>
 #include <Nazara/Renderer/Debug.hpp>
 
-NzOcclusionQuery::NzOcclusionQuery() :
+NzGpuQuery::NzGpuQuery() :
 m_id(0)
 {
 	if (IsSupported())
@@ -35,7 +35,7 @@ m_id(0)
 	#endif
 }
 
-NzOcclusionQuery::~NzOcclusionQuery()
+NzGpuQuery::~NzGpuQuery()
 {
 	if (m_id)
 	{
@@ -46,7 +46,7 @@ NzOcclusionQuery::~NzOcclusionQuery()
 	}
 }
 
-void NzOcclusionQuery::Begin()
+void NzGpuQuery::Begin(nzGpuQueryMode mode)
 {
 	#ifdef NAZARA_DEBUG
 	if (NzContext::GetCurrent() == nullptr)
@@ -56,10 +56,18 @@ void NzOcclusionQuery::Begin()
 	}
 	#endif
 
-	glBeginQuery(GL_SAMPLES_PASSED, m_id);
+	#if NAZARA_RENDERER_SAFE
+	if (!IsModeSupported(mode))
+	{
+		NazaraError("Mode (0x" + NzString::Number(mode, 16) + ") not supported");
+		return;
+	}
+	#endif
+
+	glBeginQuery(NzOpenGL::QueryMode[mode], m_id);
 }
 
-void NzOcclusionQuery::End()
+void NzGpuQuery::End()
 {
 	#ifdef NAZARA_DEBUG
 	if (NzContext::GetCurrent() == nullptr)
@@ -72,7 +80,7 @@ void NzOcclusionQuery::End()
 	glEndQuery(GL_SAMPLES_PASSED);
 }
 
-unsigned int NzOcclusionQuery::GetResult() const
+unsigned int NzGpuQuery::GetResult() const
 {
 	NzContext::EnsureContext();
 
@@ -82,7 +90,7 @@ unsigned int NzOcclusionQuery::GetResult() const
 	return result;
 }
 
-bool NzOcclusionQuery::IsResultAvailable() const
+bool NzGpuQuery::IsResultAvailable() const
 {
 	NzContext::EnsureContext();
 
@@ -92,7 +100,28 @@ bool NzOcclusionQuery::IsResultAvailable() const
 	return available == GL_TRUE;
 }
 
-bool NzOcclusionQuery::IsSupported()
+bool NzGpuQuery::IsModeSupported(nzGpuQueryMode mode)
+{
+	switch (mode)
+	{
+		case nzGpuQueryMode_AnySamplesPassed:
+		case nzGpuQueryMode_TimeElapsed:
+			return NzOpenGL::GetVersion() >= 330;
+
+		case nzGpuQueryMode_AnySamplesPassedConservative:
+			return NzOpenGL::GetVersion() >= 430;
+
+		case nzGpuQueryMode_PrimitiveGenerated:
+		case nzGpuQueryMode_SamplesPassed:
+		case nzGpuQueryMode_TransformFeedbackPrimitivesWritten:
+			return true;
+	}
+
+	NazaraError("Gpu Query mode not handled (0x" + NzString::Number(mode, 16) + ')');
+	return false;
+}
+
+bool NzGpuQuery::IsSupported()
 {
 	return NzRenderer::HasCapability(nzRendererCap_OcclusionQuery);
 }

src/Nazara/Renderer/OpenGL.cpp

@@ -1707,6 +1707,18 @@ GLenum NzOpenGL::PrimitiveMode[nzPrimitiveMode_Max+1] =
 
 static_assert(sizeof(NzOpenGL::PrimitiveMode)/sizeof(GLenum) == nzPrimitiveMode_Max+1, "Primitive mode array is incomplete");
 
+GLenum NzOpenGL::QueryMode[nzGpuQueryMode_Max+1] =
+{
+	GL_ANY_SAMPLES_PASSED,                   // nzGpuQueryMode_AnySamplesPassed
+	GL_ANY_SAMPLES_PASSED_CONSERVATIVE,      // nzGpuQueryMode_AnySamplesPassedConservative
+	GL_PRIMITIVES_GENERATED,                 // nzGpuQueryMode_PrimitiveGenerated
+	GL_SAMPLES_PASSED,                       // nzGpuQueryMode_SamplesPassed
+	GL_TIME_ELAPSED,                         // nzGpuQueryMode_TimeElapsed
+	GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN // nzGpuQueryMode_TransformFeedbackPrimitivesWritten
+};
+
+static_assert(sizeof(NzOpenGL::QueryMode)/sizeof(GLenum) == nzGpuQueryMode_Max+1, "Query mode array is incomplete");
+
 GLenum NzOpenGL::RendererComparison[nzRendererComparison_Max+1] =
 {
 	GL_ALWAYS,  // nzRendererComparison_Always