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OpenGLRenderer: Implement TextureSampler (and texture units)

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This commit is contained in:
Lynix
2020-04-26 16:29:31 +02:00
parent cbd81e3abf
commit e9f0b01e02
13 changed files with 244 additions and 66 deletions
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53
src/Nazara/OpenGLRenderer/Wrapper/Context.cpp
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@@ -22,13 +22,40 @@ namespace Nz::GL
m_device->NotifyContextDestruction(*this);
}
void Context::BindSampler(UInt32 textureUnit, GLuint sampler) const
{
if (textureUnit >= m_state.textureUnits.size())
throw std::runtime_error("unsupported texture unit #" + std::to_string(textureUnit));
auto& unit = m_state.textureUnits[textureUnit];
if (unit.sampler != sampler)
{
if (!SetCurrentContext(this))
throw std::runtime_error("failed to activate context");
glBindSampler(textureUnit, sampler);
unit.sampler = sampler;
}
}
void Context::BindTexture(TextureTarget target, GLuint texture) const
{
if (!SetCurrentContext(this))
throw std::runtime_error("failed to activate context");
BindTexture(m_state.currentTextureUnit, target, texture);
}
if (m_state.boundTextures[UnderlyingCast(target)] != texture)
void Context::BindTexture(UInt32 textureUnit, TextureTarget target, GLuint texture) const
{
if (textureUnit >= m_state.textureUnits.size())
throw std::runtime_error("unsupported texture unit #" + std::to_string(textureUnit));
auto& unit = m_state.textureUnits[textureUnit];
if (unit.textureTargets[UnderlyingCast(target)] != texture)
{
if (!SetCurrentContext(this))
throw std::runtime_error("failed to activate context");
SetCurrentTextureUnit(textureUnit);
GLenum glTarget;
switch (target)
{
@@ -54,7 +81,7 @@ namespace Nz::GL
glBindTexture(glTarget, texture);
m_state.boundTextures[UnderlyingCast(target)] = texture;
unit.textureTargets[UnderlyingCast(target)] = texture;
}
}
@@ -66,8 +93,6 @@ namespace Nz::GL
return false;
}
m_state.boundTextures.fill(0);
const Loader& loader = GetLoader();
auto LoadSymbol = [&](auto& func, const char* funcName, bool mandatory)
@@ -118,6 +143,14 @@ namespace Nz::GL
});
m_extensionStatus.fill(ExtensionStatus::NotSupported);
// TextureFilterAnisotropic
if (m_supportedExtensions.count("GL_ARB_texture_filter_anisotropic"))
m_extensionStatus[UnderlyingCast(Extension::TextureFilterAnisotropic)] = ExtensionStatus::ARB;
else if (m_supportedExtensions.count("GL_EXT_texture_filter_anisotropic"))
m_extensionStatus[UnderlyingCast(Extension::TextureFilterAnisotropic)] = ExtensionStatus::EXT;
// SpirV
if (m_supportedExtensions.count("GL_ARB_gl_spirv"))
m_extensionStatus[UnderlyingCast(Extension::SpirV)] = ExtensionStatus::ARB;
@@ -162,6 +195,14 @@ namespace Nz::GL
}, this);
}
GLint maxTextureUnits = -1;
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
if (maxTextureUnits < 32) //< OpenGL ES 3.0 requires at least 32 textures units
NazaraWarning("GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS is " + std::to_string(maxTextureUnits) + ", >= 32 expected");
assert(maxTextureUnits > 0);
m_state.textureUnits.resize(maxTextureUnits);
return true;
}