forked from Mirrorlandia_minetest/irrlicht
63 lines
2.4 KiB
C++
63 lines
2.4 KiB
C++
// Copyright (C) 2023 Vitaliy Lobachevskiy
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in Irrlicht.h
|
|
|
|
#include "Driver.h"
|
|
|
|
namespace irr {
|
|
namespace video {
|
|
|
|
E_DRIVER_TYPE COpenGLES2Driver::getDriverType() const {
|
|
return EDT_OGLES2;
|
|
}
|
|
|
|
OpenGLVersion COpenGLES2Driver::getVersionFromOpenGL() const {
|
|
auto version_string = reinterpret_cast<const char *>(glGetString(GL_VERSION));
|
|
int major, minor;
|
|
if (sscanf(version_string, "OpenGL ES %d.%d", &major, &minor) != 2) {
|
|
os::Printer::log("Failed to parse OpenGL ES version string", version_string, ELL_ERROR);
|
|
return {OpenGLSpec::ES, 0, 0, 0};
|
|
}
|
|
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);
|
|
}
|
|
|
|
IVideoDriver* createOGLES2Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager)
|
|
{
|
|
os::Printer::log("Using COpenGLES2Driver", ELL_INFORMATION);
|
|
COpenGLES2Driver* driver = new COpenGLES2Driver(params, io, contextManager);
|
|
driver->genericDriverInit(params.WindowSize, params.Stencilbuffer); // don't call in constructor, it uses virtual function calls of driver
|
|
return driver;
|
|
}
|
|
|
|
}
|
|
}
|