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/*************************************************************************/
/* config.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifdef GLES3_ENABLED
#include "config.h"
#include "core/config/project_settings.h"
#include "core/templates/vector.h"
using namespace GLES3;
#define _GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
Config *Config::singleton = nullptr;
Config::Config() {
singleton = this;
{
int max_extensions = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &max_extensions);
for (int i = 0; i < max_extensions; i++) {
const GLubyte *s = glGetStringi(GL_EXTENSIONS, i);
if (!s) {
break;
}
extensions.insert((const char *)s);
}
}
keep_original_textures = true; // false
depth_internalformat = GL_DEPTH_COMPONENT;
depth_type = GL_UNSIGNED_INT;
srgb_decode_supported = extensions.has("GL_EXT_texture_sRGB_decode");
etc2_supported = true;
#ifdef GLES_OVER_GL
float_texture_supported = true;
s3tc_supported = true;
etc_supported = false; // extensions.has("GL_OES_compressed_ETC1_RGB8_texture");
bptc_supported = extensions.has("GL_ARB_texture_compression_bptc") || extensions.has("EXT_texture_compression_bptc");
rgtc_supported = extensions.has("GL_EXT_texture_compression_rgtc") || extensions.has("GL_ARB_texture_compression_rgtc") || extensions.has("EXT_texture_compression_rgtc");
support_npot_repeat_mipmap = true;
depth_buffer_internalformat = GL_DEPTH_COMPONENT24;
#else
float_texture_supported = extensions.has("GL_ARB_texture_float") || extensions.has("GL_OES_texture_float");
s3tc_supported = extensions.has("GL_EXT_texture_compression_s3tc") || extensions.has("WEBGL_compressed_texture_s3tc");
etc_supported = extensions.has("GL_OES_compressed_ETC1_RGB8_texture") || extensions.has("WEBGL_compressed_texture_etc1");
bptc_supported = false;
rgtc_supported = false;
support_npot_repeat_mipmap = extensions.has("GL_OES_texture_npot");
#ifdef JAVASCRIPT_ENABLED
// RenderBuffer internal format must be 16 bits in WebGL,
// but depth_texture should default to 32 always
// if the implementation doesn't support 32, it should just quietly use 16 instead
// https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/
depth_buffer_internalformat = GL_DEPTH_COMPONENT16;
depth_type = GL_UNSIGNED_INT;
#else
// on mobile check for 24 bit depth support for RenderBufferStorage
if (extensions.has("GL_OES_depth24")) {
depth_buffer_internalformat = _DEPTH_COMPONENT24_OES;
depth_type = GL_UNSIGNED_INT;
} else {
depth_buffer_internalformat = GL_DEPTH_COMPONENT16;
depth_type = GL_UNSIGNED_SHORT;
}
#endif
#endif
#ifdef GLES_OVER_GL
use_rgba_2d_shadows = false;
use_rgba_3d_shadows = false;
support_depth_cubemaps = true;
#else
use_rgba_2d_shadows = !(float_texture_supported && extensions.has("GL_EXT_texture_rg"));
use_rgba_3d_shadows = false;
support_depth_cubemaps = extensions.has("GL_OES_depth_texture_cube_map");
#endif
#ifdef GLES_OVER_GL
support_32_bits_indices = true;
#else
support_32_bits_indices = extensions.has("GL_OES_element_index_uint");
#endif
#ifdef GLES_OVER_GL
support_write_depth = true;
#elif defined(JAVASCRIPT_ENABLED)
support_write_depth = false;
#else
support_write_depth = extensions.has("GL_EXT_frag_depth");
#endif
//picky requirements for these
support_shadow_cubemaps = support_write_depth && support_depth_cubemaps;
// the use skeleton software path should be used if either float texture is not supported,
// OR max_vertex_texture_image_units is zero
use_skeleton_software = (float_texture_supported == false) || (max_vertex_texture_image_units == 0);
glGetIntegerv(GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &max_vertex_texture_image_units);
glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_texture_image_units);
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &max_uniform_buffer_size);
support_anisotropic_filter = extensions.has("GL_EXT_texture_filter_anisotropic");
if (support_anisotropic_filter) {
glGetFloatv(_GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &anisotropic_level);
anisotropic_level = MIN(float(1 << int(ProjectSettings::get_singleton()->get("rendering/textures/default_filters/anisotropic_filtering_level"))), anisotropic_level);
}
force_vertex_shading = false; //GLOBAL_GET("rendering/quality/shading/force_vertex_shading");
use_nearest_mip_filter = GLOBAL_GET("rendering/textures/default_filters/use_nearest_mipmap_filter");
use_depth_prepass = bool(GLOBAL_GET("rendering/driver/depth_prepass/enable"));
if (use_depth_prepass) {
String vendors = GLOBAL_GET("rendering/driver/depth_prepass/disable_for_vendors");
Vector<String> vendor_match = vendors.split(",");
String renderer = (const char *)glGetString(GL_RENDERER);
for (int i = 0; i < vendor_match.size(); i++) {
String v = vendor_match[i].strip_edges();
if (v == String()) {
continue;
}
if (renderer.findn(v) != -1) {
use_depth_prepass = false;
}
}
}
max_renderable_elements = GLOBAL_GET("rendering/limits/opengl/max_renderable_elements");
max_renderable_lights = GLOBAL_GET("rendering/limits/opengl/max_renderable_lights");
max_lights_per_object = GLOBAL_GET("rendering/limits/opengl/max_lights_per_object");
}
Config::~Config() {
singleton = nullptr;
}
#endif // GLES3_ENABLED
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