150 lines
2.6 KiB
C
150 lines
2.6 KiB
C
#ifndef _PIUMA_RENDER_PRIMITIVES_H_
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#define _PIUMA_RENDER_PRIMITIVES_H_
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#include "../lib/types.h"
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#include "../lib/math.h"
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#include "GL/glcorearb.h"
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enum r_texture_flags : u32
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{
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R_TEXTURE_NONE = 0x00,
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R_TEXTURE_ALPHA = 0x01,
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R_TEXTURE_RGB = 0x02,
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R_TEXTURE_RGBA = 0x04,
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R_TEXTURE_SRGB = 0x08,
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R_TEXTURE_HDR = 0x10,
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R_TEXTURE_NO_MIPMAP = 0x00010000,
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R_TEXTURE_DONT_OWN = 0x20000000,
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R_TEXTURE_INITIALIZED = 0x40000000,
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R_TEXTURE_DESTROYED = 0x80000000
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};
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struct r_texture
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{
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u8 *data;
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v2s size;
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u32 flags;
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// OpenGL
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GLuint gl_id;
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};
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r_texture r_texture_create(u8 *data, v2s size, u32 flags);
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void r_texture_destroy(r_texture *texture);
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void r_texture_resize(r_texture *texture, v2s size);
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void r_texture_update(r_texture *texture, u8 *data, v2s size, v2s position = {0,0}, u32 stride = 0);
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s32 r_texture_channels(r_texture *texture);
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enum r_cubemap_flags : u32
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{
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R_CUBEMAP_NONE = 0x00,
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// R_TEXTURE_ALPHA = 0x01,
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// R_TEXTURE_RGB = 0x02,
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// R_TEXTURE_RGBA = 0x04,
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// R_TEXTURE_SRGB = 0x08,
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R_CUBEMAP_DONT_OWN = 0x20000000,
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R_CUBEMAP_INITIALIZED = 0x40000000,
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R_CUBEMAP_DESTROYED = 0x80000000
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};
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struct r_cubemap
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{
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float *data[6];
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v2s size;
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u32 flags;
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// OpenGL
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GLuint gl_id;
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};
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r_cubemap r_cubemap_create(float *data[6], v2s size, u32 flags);
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void r_cubemap_destroy(r_cubemap *cubemap);
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struct r_2d_mesh
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{
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v2 *vertices;
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v4 *colors;
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v2 *uvs;
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u64 count;
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// OpenGL
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GLuint gl_VAO;
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GLuint gl_vertex_buffer;
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GLuint gl_color_buffer;
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GLuint gl_uv_buffer;
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};
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r_2d_mesh r_2d_mesh_create(u64 count, v2 *vertices, v4 *colors, v2 *uvs = NULL);
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void r_2d_mesh_destroy(r_2d_mesh *mesh);
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// r_2d_mesh_update/change
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struct r_mesh
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{
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v3 *vertices;
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v3 *normals;
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v3 *tangents;
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v2 *uvs;
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u64 vertices_count;
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u32 *indices;
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u64 indices_count;
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// OpenGL
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GLuint gl_VAO;
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GLuint gl_vertex_buffer;
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GLuint gl_normal_buffer;
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GLuint gl_tangent_buffer;
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GLuint gl_uv_buffer;
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GLuint gl_index_buffer;
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};
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r_mesh r_mesh_create(u64 indices_count, u32 *indices, u64 vertices_count, v3 *vertices, v3 *normals = NULL, v3 *tangents = NULL, v2 *uvs = NULL);
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void r_mesh_destroy(r_mesh *mesh);
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// r_mesh_update/change
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// Common meshes
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r_mesh r_mesh_build_cube();
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// Framebuffers
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enum r_framebuffer_flags : u32
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{
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R_FRAMEBUFFER_NONE = 0,
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R_FRAMEBUFFER_DEPTH,
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};
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struct r_framebuffer
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{
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u32 gl_id;
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u32 gl_depth_id;
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r_texture color_texture;
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v2s size;
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u32 flags;
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};
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r_framebuffer r_framebuffer_create(v2s size, u32 flags);
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void r_framebuffer_destroy(r_framebuffer *fb);
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void r_framebuffer_update_size(r_framebuffer *fb, v2s size);
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#endif
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