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OpenGL3: Add driver-dependent feature checks

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This commit is contained in:
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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67
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;
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 (size_t j=0; j<IRR_OGLES_Feature_Count; ++j) {
if (!strcmp(getFeatureString(j), ext_name)) {
FeatureAvailable[j] = true;
break;
}
}
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;
}
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;
addExtension(pos);
}
void COpenGL3ExtensionHandler::initExtensionsNew()
{
GLint ext_count = 0;
GL.GetIntegerv(GL_NUM_EXTENSIONS, &ext_count);
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), name)) {
FeatureAvailable[j] = true;
break;
}
}
}
} // end namespace video
} // end namespace irr