90d3d82d8e
VR requires glDrawBuffer, which Mesa OpenGL ES does not offer. Default VR to disabled for OpenGL ES users. Users who want to try it anyway can still set use_stereo_render=1 in the SCons environment.
137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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/* interface to OpenGL functions
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* Added 9/15/99 Matthew Mueller
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* Got rid of OpenGL-internal stuff 2004-5-16 Martin Schaffner
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*/
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#ifndef _OGL_INIT_H_
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#define _OGL_INIT_H_
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#include "dxxsconf.h"
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#ifdef _MSC_VER
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#include <windows.h>
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#include <stddef.h>
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#endif
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#include "d_gl.h"
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#include "dsx-ns.h"
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#include "fwd-gr.h"
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#include "fwd-segment.h"
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#include "palette.h"
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#include "pstypes.h"
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#include "3d.h"
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#include <array>
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namespace dcx {
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/* we need to export ogl_texture for 2d/font.c */
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struct ogl_texture
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{
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GLuint handle;
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GLint internalformat;
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GLenum format;
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int w,h,tw,th,lw;
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int bytesu;
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int bytes;
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GLfloat u,v;
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GLfloat prio;
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int wrapstate;
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unsigned long numrend;
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};
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extern ogl_texture* ogl_get_free_texture();
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void ogl_init_texture(ogl_texture &t, int w, int h, int flags);
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void ogl_init_shared_palette(void);
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/* These values are written to a file as integers, so they must not be
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* renumbered.
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*/
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enum class opengl_texture_filter : uint8_t
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{
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classic,
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upscale,
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trilinear,
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};
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#define OGL_FLAG_MIPMAP (1 << 0)
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#define OGL_FLAG_NOCOLOR (1 << 1)
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#define OGL_FLAG_ALPHA (1 << 31) // not required for ogl_loadbmtexture, since it uses the BM_FLAG_TRANSPARENT, but is needed for ogl_init_texture.
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void ogl_loadbmtexture_f(grs_bitmap &bm, opengl_texture_filter texfilt, bool texanis, bool edgepad);
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void ogl_freebmtexture(grs_bitmap &bm);
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void ogl_start_frame(grs_canvas &);
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#if DXX_USE_STEREOSCOPIC_RENDER
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void ogl_stereo_frame(bool left_eye, int xoff);
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#endif
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void ogl_end_frame(void);
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void ogl_set_screen_mode(void);
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struct ogl_colors
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{
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using array_type = std::array<GLfloat, 16>;
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static const array_type white;
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const array_type &init(int c)
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{
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return
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#ifdef DXX_CONSTANT_TRUE
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DXX_CONSTANT_TRUE(c == -1)
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? white
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: DXX_CONSTANT_TRUE(c != -1)
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? init_palette(c)
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:
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#endif
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init_maybe_white(c);
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}
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const array_type &init_maybe_white(int c);
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const array_type &init_palette(unsigned c);
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private:
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array_type a;
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};
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void ogl_urect(grs_canvas &, int left, int top, int right, int bot, color_palette_index color);
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constexpr int opengl_bitmap_use_src_bitmap = 0;
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constexpr int opengl_bitmap_use_dst_canvas = -1;
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bool ogl_ubitmapm_cs(grs_canvas &, int x, int y,int dw, int dh, grs_bitmap &bm, int c);
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bool ogl_ubitmapm_cs(grs_canvas &, int x, int y,int dw, int dh, grs_bitmap &bm, const ogl_colors::array_type &c);
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bool ogl_ubitblt_i(unsigned dw, unsigned dh, unsigned dx, unsigned dy, unsigned sw, unsigned sh, unsigned sx, unsigned sy, const grs_bitmap &src, grs_bitmap &dest, opengl_texture_filter texfilt);
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bool ogl_ubitblt(unsigned w, unsigned h, unsigned dx, unsigned dy, unsigned sx, unsigned sy, const grs_bitmap &src, grs_bitmap &dest);
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void ogl_upixelc(const grs_bitmap &, unsigned x, unsigned y, color_palette_index c);
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color_palette_index ogl_ugpixel(const grs_bitmap &bitmap, unsigned x, unsigned y);
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void ogl_ulinec(grs_canvas &, int left, int top, int right, int bot, int c);
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}
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#ifdef dsx
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namespace dsx {
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void ogl_cache_level_textures();
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}
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#endif
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void _g3_draw_tmap_2(grs_canvas &, std::span<const g3s_point *const> pointlist, std::span<const g3s_uvl, 4> uvl_list, std::span<const g3s_lrgb, 4> light_rgb, grs_bitmap &bmbot, grs_bitmap &bm, texture2_rotation_low orient);
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template <std::size_t N>
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static inline void g3_draw_tmap_2(grs_canvas &canvas, const unsigned nv, const std::array<cg3s_point *, N> &pointlist, const std::array<g3s_uvl, N> &uvl_list, const std::array<g3s_lrgb, N> &light_rgb, grs_bitmap &bmbot, grs_bitmap &bm, const texture2_rotation_low orient)
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{
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static_assert(N <= MAX_POINTS_PER_POLY, "too many points in tmap");
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#ifdef DXX_CONSTANT_TRUE
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if (DXX_CONSTANT_TRUE(nv > N))
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DXX_ALWAYS_ERROR_FUNCTION(dxx_trap_tmap_overread, "reading beyond array");
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#endif
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if (nv > N)
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return;
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_g3_draw_tmap_2(canvas, std::span(pointlist).first(nv), uvl_list, light_rgb, bmbot, bm, orient);
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}
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namespace dcx {
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void ogl_draw_vertex_reticle(grs_canvas &, int cross, int primary, int secondary, int color, int alpha, int size_offs);
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void ogl_toggle_depth_test(int enable);
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void ogl_set_blending(gr_blend);
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unsigned pow2ize(unsigned x);//from ogl.c
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}
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#endif /* _OGL_INIT_H_ */
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