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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#ifndef GR_OPENGLDRAW_H
#define GR_OPENGLDRAW_H
#include "graphics/2d.h"
#include "gropenglstate.h"
#include "gropenglshader.h"
#include "graphics/shadows.h"
#include <glad/glad.h>
extern GLuint Scene_framebuffer;
extern GLuint Scene_framebuffer_ms;
extern GLuint Scene_ldr_texture;
extern GLuint Scene_color_texture;
extern GLuint Scene_position_texture;
extern GLuint Scene_normal_texture;
extern GLuint Scene_specular_texture;
extern GLuint Scene_emissive_texture;
extern GLuint Scene_color_texture_ms;
extern GLuint Scene_position_texture_ms;
extern GLuint Scene_normal_texture_ms;
extern GLuint Scene_specular_texture_ms;
extern GLuint Scene_emissive_texture_ms;
extern GLuint Scene_luminance_texture;
extern GLuint Scene_composite_texture;
extern GLuint Scene_depth_texture;
extern GLuint Scene_depth_texture_ms;
extern GLuint Cockpit_depth_texture;
extern GLuint Scene_stencil_buffer;
extern GLuint Back_framebuffer;
extern GLuint Back_texture;
void gr_opengl_update_distortion();
void gr_opengl_sphere(material *material_def, float rad);
void gr_opengl_shadow_map_start(matrix4 *shadow_view_matrix, const matrix *light_orient, vec3d* eye_pos);
void gr_opengl_shadow_map_end();
void gr_opengl_render_shield_impact(shield_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
gr_buffer_handle buffer_handle,
int n_verts);
void opengl_setup_scene_textures();
void opengl_scene_texture_shutdown();
void gr_opengl_scene_texture_begin();
void gr_opengl_scene_texture_end();
void gr_opengl_copy_effect_texture();
void opengl_render_primitives(primitive_type prim_type,
vertex_layout* layout,
int n_verts,
gr_buffer_handle buffer_handle,
size_t vert_offset,
size_t byte_offset);
void opengl_render_primitives_immediate(primitive_type prim_type,
vertex_layout* layout,
int n_verts,
void* data,
int size);
void gr_opengl_render_primitives(material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int offset,
int n_verts,
gr_buffer_handle buffer_handle,
size_t buffer_offset);
void gr_opengl_render_primitives_particle(particle_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int offset,
int n_verts,
gr_buffer_handle buffer_handle);
void gr_opengl_render_primitives_batched(batched_bitmap_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int offset,
int n_verts,
gr_buffer_handle buffer_handle);
void gr_opengl_render_primitives_distortion(distortion_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int offset,
int n_verts,
gr_buffer_handle buffer_handle);
void gr_opengl_render_movie(movie_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int n_verts,
gr_buffer_handle buffer,
size_t buffer_offset);
void gr_opengl_render_nanovg(nanovg_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int offset,
int n_verts,
gr_buffer_handle buffer_handle);
void gr_opengl_render_decals(decal_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int num_elements,
const indexed_vertex_source& binding);
void gr_opengl_render_rocket_primitives(interface_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int n_indices,
gr_buffer_handle vertex_buffer,
gr_buffer_handle index_buffer);
void opengl_draw_textured_quad(GLfloat x1,
GLfloat y1,
GLfloat u1,
GLfloat v1,
GLfloat x2,
GLfloat y2,
GLfloat u2,
GLfloat v2);
/**
* @brief Draw "something" so that the entire screen is covered and the corners use the UV values that are provided.
*
* @details This actually draws a a single oversized triangle that covers the screen in such a way so that the provided
* UV values are generated by the GPU in the corners of the screen. This is better than drawing two triangles since then
* the diagonal would be shaded differently for the two triangles causing visual differences.
*
* @param u1 The U value of the lower left corner.
* @param v1 The V value of the lower left corner.
* @param u2 The U value of the upper right corner.
* @param v2 The V value of the upper right corner.
*/
void opengl_draw_full_screen_textured(GLfloat u1, GLfloat v1, GLfloat u2, GLfloat v2);
inline GLenum opengl_primitive_type(primitive_type prim_type);
void gr_opengl_start_decal_pass();
void gr_opengl_stop_decal_pass();
void gr_opengl_calculate_irrmap();
extern int Scene_texture_initialized;
extern GLuint Scene_color_texture;
extern GLuint Scene_ldr_texture;
extern GLuint Scene_luminance_texture;
extern int Scene_texture_width;
extern int Scene_texture_height;
extern float Scene_texture_u_scale;
extern float Scene_texture_v_scale;
#endif // !GR_OPENGLDRAW_H
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