c096756dab
Updated copyright year (Yay, 515 file updated) Regenerated global headers Fixed some typo Improved some shaders -Blah blah blah- Thank you all for supporting my project ! -Lynix Former-commit-id: e4e741b318ba4f203da5ffd265bd5e516e7ffd7d
134 lines
2.6 KiB
C++
134 lines
2.6 KiB
C++
// Copyright (C) 2014 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Renderer module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Renderer/GpuQuery.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Renderer/Config.hpp>
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#include <Nazara/Renderer/Context.hpp>
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#include <Nazara/Renderer/OpenGL.hpp>
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#include <Nazara/Renderer/Renderer.hpp>
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#include <stdexcept>
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#include <Nazara/Renderer/Debug.hpp>
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NzGpuQuery::NzGpuQuery() :
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m_id(0)
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{
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if (IsSupported())
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{
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NzContext::EnsureContext();
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glGenQueries(1, reinterpret_cast<GLuint*>(&m_id));
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}
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else
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{
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NazaraError("Occlusion queries not supported");
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return;
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}
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#ifdef NAZARA_DEBUG
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if (!m_id)
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{
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NazaraError("Failed to create occlusion query");
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throw std::runtime_error("Constructor failed");
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}
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#endif
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}
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NzGpuQuery::~NzGpuQuery()
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{
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if (m_id)
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{
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NzContext::EnsureContext();
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GLuint query = static_cast<GLuint>(m_id);
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glDeleteQueries(1, &query);
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}
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}
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void NzGpuQuery::Begin(nzGpuQueryMode mode)
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{
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#ifdef NAZARA_DEBUG
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if (NzContext::GetCurrent() == nullptr)
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{
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NazaraError("No active context");
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return;
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}
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#endif
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#if NAZARA_RENDERER_SAFE
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if (!IsModeSupported(mode))
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{
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NazaraError("Mode (0x" + NzString::Number(mode, 16) + ") not supported");
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return;
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}
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#endif
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m_mode = mode;
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glBeginQuery(NzOpenGL::QueryMode[mode], m_id);
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}
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void NzGpuQuery::End()
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{
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#ifdef NAZARA_DEBUG
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if (NzContext::GetCurrent() == nullptr)
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{
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NazaraError("No active context");
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return;
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}
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#endif
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glEndQuery(NzOpenGL::QueryMode[m_mode]);
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}
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unsigned int NzGpuQuery::GetResult() const
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{
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NzContext::EnsureContext();
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GLuint result;
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glGetQueryObjectuiv(m_id, GL_QUERY_RESULT, &result);
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return result;
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}
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bool NzGpuQuery::IsResultAvailable() const
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{
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NzContext::EnsureContext();
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GLint available;
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glGetQueryObjectiv(m_id, GL_QUERY_RESULT_AVAILABLE, &available);
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return available == GL_TRUE;
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}
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unsigned int NzGpuQuery::GetOpenGLID() const
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{
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return m_id;
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}
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bool NzGpuQuery::IsModeSupported(nzGpuQueryMode mode)
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{
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switch (mode)
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{
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case nzGpuQueryMode_AnySamplesPassed:
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case nzGpuQueryMode_TimeElapsed:
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return NzOpenGL::GetVersion() >= 330;
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case nzGpuQueryMode_AnySamplesPassedConservative:
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return NzOpenGL::GetVersion() >= 430;
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case nzGpuQueryMode_PrimitiveGenerated:
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case nzGpuQueryMode_SamplesPassed:
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case nzGpuQueryMode_TransformFeedbackPrimitivesWritten:
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return true;
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}
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NazaraError("Gpu Query mode not handled (0x" + NzString::Number(mode, 16) + ')');
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return false;
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}
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bool NzGpuQuery::IsSupported()
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{
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return NzRenderer::HasCapability(nzRendererCap_OcclusionQuery);
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}
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