253 lines
7.4 KiB
C++
253 lines
7.4 KiB
C++
// Copyright (C) 2009-2010 Amundis
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// Heavily based on the OpenGL driver implemented by Nikolaus Gebhardt
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// and OpenGL ES driver implemented by Christian Stehno
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in Irrlicht.h
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#include "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_OGLES2_
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#include "COGLES2ExtensionHandler.h"
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#include "COGLES2Driver.h"
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#include "fast_atof.h"
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#include "irrString.h"
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namespace irr
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{
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namespace video
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{
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static const char* const OGLES2FeatureStrings[COGLES2ExtensionHandler::IRR_OGLES2_Feature_Count] =
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{
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"GL_AMD_compressed_3DC_texture",
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"GL_AMD_compressed_ATC_texture",
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"GL_AMD_performance_monitor",
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"GL_AMD_program_binary_Z400",
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"GL_ANGLE_framebuffer_blit",
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"GL_ANGLE_framebuffer_multisample",
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"GL_ANGLE_instanced_arrays",
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"GL_ANGLE_pack_reverse_row_order",
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"GL_ANGLE_texture_compression_dxt3",
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"GL_ANGLE_texture_compression_dxt5",
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"GL_ANGLE_texture_usage",
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"GL_ANGLE_translated_shader_source",
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"GL_APPLE_copy_texture_levels",
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"GL_APPLE_framebuffer_multisample",
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"GL_APPLE_rgb_422",
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"GL_APPLE_sync",
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"GL_APPLE_texture_2D_limited_npot",
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"GL_APPLE_texture_format_BGRA8888",
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"GL_APPLE_texture_max_level",
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"GL_ARB_texture_env_combine",
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"GL_ARB_texture_env_dot3",
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"GL_ARM_mali_program_binary",
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"GL_ARM_mali_shader_binary",
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"GL_ARM_rgba8",
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"GL_DMP_shader_binary",
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"GL_EXT_blend_minmax",
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"GL_EXT_color_buffer_half_float",
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"GL_EXT_debug_label",
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"GL_EXT_debug_marker",
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"GL_EXT_discard_framebuffer",
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"GL_EXT_frag_depth",
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"GL_EXT_map_buffer_range",
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"GL_EXT_multisampled_render_to_texture",
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"GL_EXT_multiview_draw_buffers",
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"GL_EXT_multi_draw_arrays",
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"GL_EXT_occlusion_query_boolean",
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"GL_EXT_read_format_bgra",
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"GL_EXT_robustness",
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"GL_EXT_separate_shader_objects",
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"GL_EXT_shader_framebuffer_fetch",
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"GL_EXT_shader_texture_lod",
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"GL_EXT_shadow_samplers",
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"GL_EXT_sRGB",
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"GL_EXT_texture_compression_dxt1",
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"GL_EXT_texture_filter_anisotropic",
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"GL_EXT_texture_format_BGRA8888",
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"GL_EXT_texture_lod_bias",
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"GL_EXT_texture_rg",
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"GL_EXT_texture_storage",
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"GL_EXT_texture_type_2_10_10_10_REV",
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"GL_EXT_unpack_subimage",
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"GL_FJ_shader_binary_GCCSO",
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"GL_IMG_multisampled_render_to_texture",
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"GL_IMG_program_binary",
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"GL_IMG_read_format",
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"GL_IMG_shader_binary",
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"GL_IMG_texture_compression_pvrtc",
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"GL_IMG_texture_env_enhanced_fixed_function",
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"GL_IMG_texture_format_BGRA8888",
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"GL_IMG_user_clip_plane",
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"GL_IMG_vertex_program",
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"GL_KHR_debug",
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"GL_KHR_texture_compression_astc_ldr",
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"GL_NV_coverage_sample",
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"GL_NV_depth_nonlinear",
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"GL_NV_draw_buffers",
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"GL_NV_EGL_stream_consumer_external",
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"GL_NV_fbo_color_attachments",
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"GL_NV_fence",
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"GL_NV_read_buffer",
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"GL_NV_read_buffer_front",
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"GL_NV_read_depth",
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"GL_NV_read_depth_stencil",
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"GL_NV_read_stencil",
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"GL_NV_texture_compression_s3tc_update",
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"GL_NV_texture_npot_2D_mipmap",
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"GL_OES_blend_equation_separate",
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"GL_OES_blend_func_separate",
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"GL_OES_blend_subtract",
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"GL_OES_byte_coordinates",
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"GL_OES_compressed_ETC1_RGB8_texture",
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"GL_OES_compressed_paletted_texture",
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"GL_OES_depth24",
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"GL_OES_depth32",
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"GL_OES_depth_texture",
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"GL_OES_draw_texture",
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"GL_OES_EGL_image",
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"GL_OES_EGL_image_external",
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"GL_OES_EGL_sync",
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"GL_OES_element_index_uint",
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"GL_OES_extended_matrix_palette",
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"GL_OES_fbo_render_mipmap",
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"GL_OES_fixed_point",
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"GL_OES_fragment_precision_high",
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"GL_OES_framebuffer_object",
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"GL_OES_get_program_binary",
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"GL_OES_mapbuffer",
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"GL_OES_matrix_get",
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"GL_OES_matrix_palette",
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"GL_OES_packed_depth_stencil",
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"GL_OES_point_size_array",
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"GL_OES_point_sprite",
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"GL_OES_query_matrix",
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"GL_OES_read_format",
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"GL_OES_required_internalformat",
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"GL_OES_rgb8_rgba8",
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"GL_OES_single_precision",
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"GL_OES_standard_derivatives",
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"GL_OES_stencil1",
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"GL_OES_stencil4",
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"GL_OES_stencil8",
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"GL_OES_stencil_wrap",
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"GL_OES_surfaceless_context",
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"GL_OES_texture_3D",
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"GL_OES_texture_cube_map",
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"GL_OES_texture_env_crossbar",
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"GL_OES_texture_float",
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"GL_OES_texture_float_linear",
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"GL_OES_texture_half_float",
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"GL_OES_texture_half_float_linear",
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"GL_OES_texture_mirrored_repeat",
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"GL_OES_texture_npot",
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"GL_OES_vertex_array_object",
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"GL_OES_vertex_half_float",
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"GL_OES_vertex_type_10_10_10_2",
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"GL_QCOM_alpha_test",
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"GL_QCOM_binning_control",
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"GL_QCOM_driver_control",
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"GL_QCOM_extended_get",
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"GL_QCOM_extended_get2",
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"GL_QCOM_performance_monitor_global_mode",
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"GL_QCOM_tiled_rendering",
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"GL_QCOM_writeonly_rendering",
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"GL_SUN_multi_draw_arrays",
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"GL_VIV_shader_binary"
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};
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COGLES2ExtensionHandler::COGLES2ExtensionHandler() :
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Version(0), MaxTextureUnits(0), MaxSupportedTextures(0),
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MaxAnisotropy(1), MaxIndices(0xffff), MaxTextureSize(1),
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MaxTextureLODBias(0.f),
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StencilBuffer(false)
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{
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for (u32 i=0; i<IRR_OGLES2_Feature_Count; ++i)
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FeatureAvailable[i] = false;
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}
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void COGLES2ExtensionHandler::dump() const
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{
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for (u32 i=0; i<IRR_OGLES2_Feature_Count; ++i)
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os::Printer::log(OGLES2FeatureStrings[i], FeatureAvailable[i] ? " true" : " false");
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}
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void COGLES2ExtensionHandler::initExtensions(COGLES2Driver* driver,
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bool withStencil)
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{
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const core::stringc stringVer(glGetString(GL_VERSION));
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const f32 ogl_ver = core::fast_atof(stringVer.c_str() + 10);
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Version = static_cast<u16>(core::floor32(ogl_ver) * 100 + core::round32(core::fract(ogl_ver) * 10.0f));
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core::stringc extensions = glGetString(GL_EXTENSIONS);
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os::Printer::log(extensions.c_str());
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// typo in the simulator (note the postfixed s)
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if (extensions.find("GL_IMG_user_clip_planes"))
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FeatureAvailable[IRR_IMG_user_clip_plane] = true;
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{
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const u32 size = extensions.size() + 1;
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c8* str = new c8[size];
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strncpy(str, extensions.c_str(), extensions.size());
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str[extensions.size()] = ' ';
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c8* p = str;
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for (u32 i=0; i<size; ++i)
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{
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if (str[i] == ' ')
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{
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str[i] = 0;
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if (*p)
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for (u32 j=0; j<IRR_OGLES2_Feature_Count; ++j)
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{
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if (!strcmp(OGLES2FeatureStrings[j], p))
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{
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FeatureAvailable[j] = true;
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break;
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}
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}
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p = p + strlen(p) + 1;
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}
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}
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delete [] str;
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}
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GLint val=0;
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glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &val);
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MaxSupportedTextures = core::min_(MATERIAL_MAX_TEXTURES, static_cast<u32>(val));
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#ifdef GL_EXT_texture_filter_anisotropic
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if (FeatureAvailable[IRR_EXT_texture_filter_anisotropic])
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{
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glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);
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MaxAnisotropy = static_cast<u8>(val);
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}
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#endif
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#ifdef GL_MAX_ELEMENTS_INDICES
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glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &val);
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MaxIndices=val;
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#endif
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);
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MaxTextureSize=static_cast<u32>(val);
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#ifdef GL_EXT_texture_lod_bias
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if (FeatureAvailable[IRR_EXT_texture_lod_bias])
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glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);
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#endif
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glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
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glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
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MaxTextureUnits = core::min_(MaxSupportedTextures, static_cast<u8>(MATERIAL_MAX_TEXTURES));
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}
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} // end namespace video
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} // end namespace irr
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#endif // _IRR_COMPILE_WITH_OGLES2_
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