src/graphicsObject.c - master - Zamar_Terrier/TigorEngineWeb2

src/graphicsObject.c
82 строки3 KB
Ilia Zamaruev
wasi integration
16 фев 2026, 18:50
16 фев 2026, 18:5017d4fd0
#include "graphicsObject.h"

#include "e_memory.h"

#include "e_vertex.h"

extern TEngine engine;

void GraphicsObjectInit(GraphicsObject* graphObj, uint32_t type)
{
    if(graphObj->num_shapes == 0)
        memset(&graphObj->shapes, 0, sizeof(Shape) * MAX_SHAPES);
}

void GraphicsObjectSetVertex(GraphicsObject* graphObj, void *vertices, int vertCount, uint32_t *indices, int indxCount, VertexType type){

    uint32_t num = graphObj->num_shapes;

    int res = 0;

    uint32_t size = 0;

    switch (type)
    {
        case TIGOR_VERTEX_TYPE_2D_OBJECT:
            size = sizeof(Vertex2D);
            break;
        case TIGOR_VERTEX_TYPE_3D_OBJECT:
            size = sizeof(Vertex3D);
            break;
        default:
            break;
    }

    graphObj->shapes[num].vParam.size = size;
    graphObj->shapes[num].iParam.size = sizeof(uint32_t);

    if(vertices != NULL)
    {
        graphObj->shapes[num].vParam.vertices = AllocateMemoryP(vertCount, size, graphObj);
        memcpy(graphObj->shapes[num].vParam.vertices, vertices, size * vertCount);
        graphObj->shapes[num].vParam.count = vertCount;
    }

    if(indices != NULL)
    {
        graphObj->shapes[num].iParam.indices = AllocateMemoryP(indxCount, sizeof(uint32_t), graphObj);
        memcpy(graphObj->shapes[num].iParam.indices, indices, sizeof(uint32_t) * indxCount);
        graphObj->shapes[num].iParam.count = indxCount;
    }    
    
    GraphicsObjectGenBuffers(graphObj);

    graphObj->num_shapes ++;
}

void GraphicsObjectGenBuffers(GraphicsObject* graphObj){
    glGenVertexArrays(1, &graphObj->shapes[0].VAO);
    glGenBuffers(1, &graphObj->shapes[0].vParam.buffer);
    glGenBuffers(1, &graphObj->shapes[0].iParam.buffer);
    // bind the Vertex Array Object first, then bind and set vertex buffer(s), and then configure vertex attributes(s).
    glBindVertexArray(graphObj->shapes[0].VAO);

    glBindBuffer(GL_ARRAY_BUFFER, graphObj->shapes[0].vParam.buffer);
    glBufferData(GL_ARRAY_BUFFER, graphObj->shapes[0].vParam.size * graphObj->shapes[0].vParam.count, graphObj->shapes[0].vParam.vertices, GL_STATIC_DRAW);
    
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, graphObj->shapes[0].iParam.buffer);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, graphObj->shapes[0].iParam.size * graphObj->shapes[0].iParam.count, graphObj->shapes[0].iParam.indices, GL_STATIC_DRAW);
}

void GraphicsObjectSetShadersPath(GraphicsObject *graphObj, const char *vert, const char *frag)
{

    int len = strlen(vert);
    memset(graphObj->aShader.vertShader, 0, 256);
    memcpy(graphObj->aShader.vertShader, vert, len);


    len = strlen(frag);
    memset(graphObj->aShader.fragShader, 0, 256);
    memcpy(graphObj->aShader.fragShader, frag, len);
}