tarion/Engine2026
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lighting setup

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This commit is contained in:
Claire Schwarzer 2026-02-07 00:01:56 +01:00
parent ccc1c76762
commit 16b674efc1
4 changed files with 85 additions and 90 deletions
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25
engine/mesh.h
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@ -5,9 +5,8 @@
struct Vertex {
float x, y, z; // position
float r, g, b; // color
float nX, nY, zY; // normal
float u, v; // texcoord
// = 8 floats = 32 bytes
};
class Mesh
@ -27,10 +26,6 @@ public:
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
std::cout << VAO << std::endl;
std::cout << VBO << std::endl;
std::cout << EBO << std::endl;
glBindVertexArray(VAO);
@ -40,13 +35,15 @@ public:
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned int), indices.data(), GL_STATIC_DRAW);
// position attribute
// Position
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, x));
glEnableVertexAttribArray(0);
// color attribute
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, r));
// Normals
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, nX));
glEnableVertexAttribArray(1);
// texture coord attribute
// Texcoords
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void*)offsetof(Vertex, u));
glEnableVertexAttribArray(2);
}
@ -58,9 +55,9 @@ public:
void Draw() const
{
glDrawArrays(GL_TRIANGLES, 0, 36);
//glBindVertexArray(VAO);
//glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(indexCount),
// GL_UNSIGNED_INT, nullptr);
//glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(indexCount),
GL_UNSIGNED_INT, 0);
}
};