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Fix material textures

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This commit is contained in:
MrLetsplay 2022-10-10 09:54:36 +02:00
parent fbb7980ce7
commit 6d687e63d8
4 changed files with 30 additions and 34 deletions
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27
src/kekengine/cpp/mesh.cpp
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@ -63,24 +63,25 @@ Mesh::~Mesh() {
delete material;
}
static void bindTextureUniform(Shader *shader, std::string name, std::shared_ptr<Texture> texture, GLuint *textureIndex) {
GLint loc = glGetUniformLocation(shader->id, name.c_str());
if(loc != -1) {
texture->use(*textureIndex);
glUniform1i(loc, *textureIndex - GL_TEXTURE0);
(*textureIndex)++;
}
}
void Mesh::draw(Shader *shader) {
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
GLint ambient = glGetUniformLocation(shader->id, "material.ambient");
// FIXME: is -1
if(ambient != -1) { // Material can be passed to shader
material->ambient->use(GL_TEXTURE0);
glUniform1i(ambient, 0);
material->diffuse->use(GL_TEXTURE1);
glUniform1i(glGetUniformLocation(shader->id, "material.diffuse"), 1);
material->specular->use(GL_TEXTURE2);
glUniform1i(glGetUniformLocation(shader->id, "material.specular"), 2);
glUniform1f(glGetUniformLocation(shader->id, "material.shininess"), material->shininess);
}else {
std::cerr << "oof" << std::endl;
}
GLuint textureIndex = GL_TEXTURE0;
bindTextureUniform(shader, "material.ambient", material->ambient, &textureIndex);
bindTextureUniform(shader, "material.diffuse", material->diffuse, &textureIndex);
bindTextureUniform(shader, "material.specular", material->specular, &textureIndex);
glUniform1f(glGetUniformLocation(shader->id, "material.shininess"), material->shininess);
// Bind vertices + texture coordinates
glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);

25
src/kekengine/cpp/objparser.cpp
View File

@ -108,14 +108,21 @@ Mesh *parseMesh(MemoryBuffer *buf, std::string folderPath) {
}
Mesh *loadMesh(std::string path) {
std::size_t n = path.find('/');
std::string folderPath = n == std::string::npos ? "" : path.substr(n + 1);
std::size_t n = path.find_last_of('/');
std::string folderPath = n == std::string::npos ? "" : path.substr(0, n + 1);
MemoryBuffer *buf = Resource::loadResource(path);
Mesh *mesh = parseMesh(buf, folderPath);
delete buf;
return mesh;
}
static Material *makeMaterial(std::shared_ptr<Texture> ambient, std::shared_ptr<Texture> diffuse, std::shared_ptr<Texture> specular, float shininess) {
if(!ambient) ambient = Texture::generateColor(glm::vec3(1.0f));
if(!diffuse) diffuse = Texture::generateColor(glm::vec3(1.0f));
if(!specular) specular = Texture::generateColor(glm::vec3(1.0f));
return new Material(ambient, diffuse, specular, shininess);
}
std::map<std::string, Material *> parseMaterials(MemoryBuffer *buf, std::string folderPath) {
std::map<std::string, Material *> mats;
@ -136,10 +143,7 @@ std::map<std::string, Material *> parseMaterials(MemoryBuffer *buf, std::string
if(cmd == "#") continue;
if(cmd == "newmtl") {
if(name.length() > 0) {
Material *mat = new Material(ambient, diffuse, specular, shininess);
mats.emplace(name, mat);
}
if(name.length() > 0) mats.emplace(name, makeMaterial(ambient, diffuse, specular, shininess));
str >> name;
}else if(cmd == "Ka") {
@ -163,17 +167,14 @@ std::map<std::string, Material *> parseMaterials(MemoryBuffer *buf, std::string
}
}
if(name.length() > 0) {
Material *mat = new Material(ambient, diffuse, specular, shininess);
mats.emplace(name, mat);
}
if(name.length() > 0) mats.emplace(name, makeMaterial(ambient, diffuse, specular, shininess));
return mats;
}
std::map<std::string, Material *> loadMaterials(std::string path) {
std::size_t n = path.find('/');
std::string folderPath = n == std::string::npos ? "" : path.substr(n + 1);
std::size_t n = path.find_last_of('/');
std::string folderPath = n == std::string::npos ? "" : path.substr(0, n + 1);
MemoryBuffer *buf = Resource::loadResource(path);
std::map<std::string, Material *> mats = parseMaterials(buf, folderPath);
delete buf;

4
src/kekengine/cpp/texture.cpp
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@ -8,7 +8,7 @@
namespace kek {
static unsigned int allocTexture(unsigned char *data, int width, int height, float borderColor[4]) {
static GLuint allocTexture(unsigned char *data, int width, int height, float borderColor[4]) {
GLuint id;
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
@ -37,7 +37,7 @@ Texture::Texture(std::string texturePath) {
delete buf;
float borderColor[] = { 1.0f, 0.0f, 1.0f, 1.0f };
allocTexture(data, width, height, borderColor);
id = allocTexture(data, width, height, borderColor);
stbi_image_free(data);
}

8
src/kekgame/cpp/kekgame.cpp
View File

@ -19,19 +19,13 @@ int main(int argc, char **argv) {
Scene *scene = new Scene();
scene->addObject(test);
MemoryBuffer *buf2 = Resource::loadResource("object/cube_colored/Cube.obj");
Mesh *mesh2 = ObjParser::parseMesh(buf2, "object/cube_colored/");
delete buf2;
for(int i = 0; i < 1; i++) {
GameObject *test2 = new GameObject();
test2->addMesh(new Mesh(mesh2->vertices, mesh2->indices, mesh2->material));
test2->addMesh(ObjParser::loadMesh("object/cube_colored/Cube.obj"));
test2->moveTo(glm::vec3(0.0f, 5.0f, 3 * i));
scene->addObject(test2);
}
delete mesh2;
Engine::setActiveScene(scene);
Engine::start();