68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
// Copyright (c) 2025 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#include "display/display.h"
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typedef enum {
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#if DISPLAY_SDL2
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MESH_PRIMITIVE_TRIANGLES = GL_TRIANGLES,
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MESH_PRIMITIVE_LINES = GL_LINES,
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MESH_PRIMITIVE_POINTS = GL_POINTS,
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#endif
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} meshprimitivetype_t;
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#define MESH_VERTEX_COLOR_SIZE 4
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#define MESH_VERTEX_UV_SIZE 2
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#define MESH_VERTEX_POS_SIZE 3
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typedef struct {
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#if DISPLAY_SDL2
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GLubyte color[MESH_VERTEX_COLOR_SIZE];
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GLfloat uv[MESH_VERTEX_UV_SIZE];
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GLfloat pos[MESH_VERTEX_POS_SIZE];
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#endif
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} meshvertex_t;
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typedef struct {
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const meshvertex_t *vertices;
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int32_t vertexCount;
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meshprimitivetype_t primitiveType;
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} mesh_t;
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/**
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* Initializes a mesh.
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*
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* @param mesh The mesh to initialize.
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* @param primitiveType The OpenGL primitive type (e.g., GL_TRIANGLES).
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* @param vertexCount The number of vertices in the mesh.
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* @param vertices The vertex data for the mesh.
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*/
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void meshInit(
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mesh_t *mesh,
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const meshprimitivetype_t primitiveType,
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const int32_t vertexCount,
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const meshvertex_t *vertices
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);
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/**
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* Draws a mesh.
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*
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* @param mesh The mesh to draw.
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* @param vertexOffset The offset in the vertex array to start drawing from.
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* @param vertexCount The number of vertices to draw. If -1, draws all vertices.
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*/
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void meshDraw(
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const mesh_t *mesh,
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const int32_t vertexOffset,
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const int32_t vertexCount
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);
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/**
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* Disposes a mesh.
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*
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* @param mesh The mesh to dispose.
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*/
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void meshDispose(mesh_t *mesh); |