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OpenGL3: Add driver-dependent feature checks

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numzero 2023-04-15 18:11:08 +03:00 committed by sfan5
parent ab628e641c
commit 4ee1ab261e
8 changed files with 102 additions and 45 deletions
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2
source/Irrlicht/OpenGL/Driver.cpp
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@ -217,7 +217,7 @@ COpenGL3DriverBase::~COpenGL3DriverBase()
bool COpenGL3DriverBase::genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer)
{
initVersion();
initExtensions();
initFeatures();
// reset cache handler
delete CacheHandler;

2
source/Irrlicht/OpenGL/Driver.h
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@ -288,6 +288,8 @@ namespace video
void initVersion();
virtual OpenGLVersion getVersionFromOpenGL() const = 0;
virtual void initFeatures() = 0;
void chooseMaterial2D();
ITexture* createDeviceDependentTexture(const io::path& name, IImage* image) override;

55
source/Irrlicht/OpenGL/ExtensionHandler.cpp
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@ -15,52 +15,33 @@ namespace irr
{
namespace video
{
void COpenGL3ExtensionHandler::initExtensions()
void COpenGL3ExtensionHandler::initExtensionsOld()
{
GLint major, minor;
glGetIntegerv(GL_MAJOR_VERSION, &major);
glGetIntegerv(GL_MINOR_VERSION, &minor);
Version = 100 * major + 10 * minor;
auto extensions_string = reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS));
const char *pos = extensions_string;
while (const char *next = strchr(pos, ' ')) {
std::string name{pos, next};
addExtension(name.c_str());
pos = next + 1;
}
addExtension(pos);
}
void COpenGL3ExtensionHandler::initExtensionsNew()
{
GLint ext_count = 0;
GL.GetIntegerv(GL_NUM_EXTENSIONS, &ext_count);
for (int k = 0; k < ext_count; k++) {
auto ext_name = (char *)GL.GetStringi(GL_EXTENSIONS, k);
for (int k = 0; k < ext_count; k++)
addExtension(reinterpret_cast<const char *>(GL.GetStringi(GL_EXTENSIONS, k)));
}
void COpenGL3ExtensionHandler::addExtension(const char *name) {
for (size_t j=0; j<IRR_OGLES_Feature_Count; ++j) {
if (!strcmp(getFeatureString(j), ext_name)) {
if (!strcmp(getFeatureString(j), name)) {
FeatureAvailable[j] = true;
break;
}
}
}
GLint val=0;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &val);
Feature.MaxTextureUnits = static_cast<u8>(val);
#ifdef GL_EXT_texture_filter_anisotropic
if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])
{
glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);
MaxAnisotropy = static_cast<u8>(val);
}
#endif
#ifdef GL_MAX_ELEMENTS_INDICES
glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &val);
MaxIndices=val;
#endif
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);
MaxTextureSize=static_cast<u32>(val);
#ifdef GL_EXT_texture_lod_bias
if (FeatureAvailable[IRR_GL_EXT_texture_lod_bias])
glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);
#endif
glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES));
Feature.ColorAttachment = 1;
}
} // end namespace video
} // end namespace irr

12
source/Irrlicht/OpenGL/ExtensionHandler.h
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@ -24,7 +24,8 @@ namespace video
public:
COpenGL3ExtensionHandler() : COGLESCoreExtensionHandler() {}
void initExtensions();
void initExtensionsOld();
void initExtensionsNew();
bool queryFeature(video::E_VIDEO_DRIVER_FEATURE feature) const
{
@ -80,6 +81,12 @@ namespace video
};
}
static GLint GetInteger(GLenum key) {
GLint val = 0;
glGetIntegerv(key, &val);
return val;
};
inline void irrGlActiveTexture(GLenum texture)
{
glActiveTexture(texture);
@ -181,6 +188,9 @@ namespace video
inline void irrGlBlendEquationSeparateIndexed(GLuint buf, GLenum modeRGB, GLenum modeAlpha)
{
}
private:
void addExtension(const char *name);
};
}

27
source/Irrlicht/OpenGL3/Driver.cpp
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@ -26,6 +26,33 @@ namespace video {
return {OpenGLSpec::Core, (u8)major, (u8)minor, 0};
}
void COpenGL3Driver::initFeatures() {
assert (Version.Spec == OpenGLSpec::Compat);
assert (Version.Major >= 3);
initExtensionsNew();
// COGLESCoreExtensionHandler::Feature
static_assert(MATERIAL_MAX_TEXTURES <= 16, "Only up to 16 textures are guaranteed");
Feature.BlendOperation = true;
Feature.ColorAttachment = GetInteger(GL_MAX_COLOR_ATTACHMENTS);
Feature.MaxTextureUnits = MATERIAL_MAX_TEXTURES;
Feature.MultipleRenderTarget = GetInteger(GL_MAX_DRAW_BUFFERS);
// COGLESCoreExtensionHandler
if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])
MaxAnisotropy = GetInteger(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT);
MaxIndices = GetInteger(GL_MAX_ELEMENTS_INDICES);
MaxTextureSize = GetInteger(GL_MAX_TEXTURE_SIZE);
glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS, &MaxTextureLODBias);
glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
DimAliasedPoint[0] = 1.0f;
DimAliasedPoint[1] = 1.0f;
GLint val = 0;
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &val);
StencilBuffer = val == GL_FRAMEBUFFER_DEFAULT;
}
IVideoDriver* createOpenGL3Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager)
{
os::Printer::log("Using COpenGL3Driver", ELL_INFORMATION);

1
source/Irrlicht/OpenGL3/Driver.h
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@ -19,6 +19,7 @@ namespace video {
protected:
OpenGLVersion getVersionFromOpenGL() const override;
void initFeatures() override;
};
}

35
source/Irrlicht/OpenGLES2/Driver.cpp
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@ -21,6 +21,41 @@ namespace video {
return {OpenGLSpec::ES, (u8)major, (u8)minor, 0};
}
void COpenGLES2Driver::initFeatures() {
assert (Version.Major >= 2);
if (Version.Major >= 3)
initExtensionsNew();
else
initExtensionsOld();
// COGLESCoreExtensionHandler::Feature
static_assert(MATERIAL_MAX_TEXTURES <= 8, "Only up to 8 textures are guaranteed");
Feature.BlendOperation = true;
Feature.ColorAttachment = 1;
if (Version.Major >= 3 || FeatureAvailable[IRR_GL_EXT_draw_buffers])
Feature.ColorAttachment = GetInteger(GL_MAX_COLOR_ATTACHMENTS);
Feature.MaxTextureUnits = MATERIAL_MAX_TEXTURES;
if (Version.Major >= 3 || FeatureAvailable[IRR_GL_EXT_draw_buffers])
Feature.MultipleRenderTarget = GetInteger(GL_MAX_DRAW_BUFFERS);
// COGLESCoreExtensionHandler
if (FeatureAvailable[IRR_GL_EXT_texture_filter_anisotropic])
MaxAnisotropy = GetInteger(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT);
if (Version.Major >= 3 || FeatureAvailable[IRR_GL_EXT_draw_range_elements])
MaxIndices = GetInteger(GL_MAX_ELEMENTS_INDICES);
MaxTextureSize = GetInteger(GL_MAX_TEXTURE_SIZE);
if (FeatureAvailable[IRR_GL_EXT_texture_lod_bias])
glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS, &MaxTextureLODBias);
glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine); // NOTE: this is not in the OpenGL ES 2.0 spec...
glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
if (Version.Major >= 3 || FeatureAvailable[IRR_GL_ARB_framebuffer_object]) {
GLint val = 0;
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &val);
StencilBuffer = val == GL_FRAMEBUFFER_DEFAULT;
}
}
IVideoDriver* createOGLES2Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager)
{
os::Printer::log("Using COpenGLES2Driver", ELL_INFORMATION);

1
source/Irrlicht/OpenGLES2/Driver.h
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@ -19,6 +19,7 @@ namespace video {
protected:
OpenGLVersion getVersionFromOpenGL() const override;
void initFeatures() override;
};
}