Finding the cause of gldrawelements gl_invalid_operation | Graphics Programming | Page 1

grim umbra Jun 5, 2023, 5:44 PM

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please dont just dump files like that nobody has access to

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consider putting your code on some website like github/gitlab

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and also also dont just "this doesnt work!!!" "here my code"

compact geode Jun 5, 2023, 6:03 PM

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do you seriously think I know what is wrong when there is 0 error nor warnings ?

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and I get 422 on github I cannot create a repo

grim umbra Jun 5, 2023, 6:37 PM

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@compact geode

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why do you just leave this thread, man

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fix your github issues

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then provide the code like everyone else does as well

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and then describe what you tried, what you think could be it, etc

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the server is full of similar problems, you could utilize the searchbox too

grim umbra Jun 5, 2023, 8:24 PM

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also, you dont have to use dll injection, just launch your program with renderdoc

compact geode Jun 6, 2023, 6:35 AM

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to do that rendoc has to inject a dll . When I click run failed ot inject dll

grim umbra Jun 6, 2023, 9:57 AM

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no

compact geode Jun 7, 2023, 5:40 PM

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yes

grim umbra Jun 7, 2023, 5:44 PM

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why hide the filename?

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and can you show your settings for "General" and "Core"

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@compact geode

compact geode Jun 7, 2023, 6:04 PM

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nevermind its libwinpthread-1.dll missing

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because cglm uses it -_-

grim umbra Jun 7, 2023, 6:12 PM

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what?

compact geode Jun 7, 2023, 6:13 PM

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renderdoc is failing because, windows is failling to run my programme because my porgramme uses cglm to do math. Cglm needs libwinpthread-1.dll in Mingw64

grim umbra Jun 7, 2023, 6:13 PM

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dude

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please speak in a comprehensable fashion

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all these single fragments make no sense

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especially if you seek help

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: C

compact geode Jun 8, 2023, 8:29 AM

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I have fixed the dll issue and managed to export a render doc file.

📎 broken_code.rdc

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Finding to cause of gldrawelements gl_invalid_operation

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Finding the cause of gldrawelements gl_invalid_operation

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now It should be not as hard to help me

grim umbra Jun 8, 2023, 10:26 AM

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idk what the f you do

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which version of renderdoc did you use?

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and why you are unable to tell me the options i asked for

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is not helping either

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;C

compact geode Jun 8, 2023, 11:33 AM

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what ... , the latest : 1.27 . I can open it just fine in my renderdoc

compact geode Jun 8, 2023, 1:09 PM

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@grim umbra do you want the xlm or chrome json ?

compact geode Jun 8, 2023, 3:03 PM

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17 API High Miscellaneous 1282 GL_INVALID_OPERATION error generated. Wrong component type or count.

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I can confirm that the count isn't wrong and the type is GL_UNSIGNED_INT

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GLuint indices[] =
            {
                    0, 1, 2,
                    0, 2, 3
            };
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);

grim umbra Jun 8, 2023, 3:35 PM

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you need an index buffer for the indices

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perhaps you actually try to work through learnopengl.com

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thats what i see in your bound indexbuffer

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that looks wrong

compact geode Jun 8, 2023, 4:01 PM

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but I have an EBO, its strange

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EBO initEBO(GLuint *indices, GLsizeiptr size) {
    EBO out = (EBO) malloc(sizeof(struct s_EBO));

    glGenBuffers(1, &out->ID);
    //BindTexture the VBO specifying it's a GL_ARRAY_BUFFER
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, out->ID);
    //Introduce the vertices into the VBO
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, indices, GL_STATIC_DRAW);

    return out;
}

void bindEBO(EBO ebo) {
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo->ID);
}

void unBindEBO(void) {
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
}

void deleteEBO(EBO ebo) {
    glDeleteBuffers(1, &ebo->ID);
    free(ebo);
}

//other file
Mesh initMesh(GLfloat vertices[], GLuint indices[], Texture textures[], uint8_t coordsOnly, uint64_t numberOfTexture,
              GLsizei numberOfIndices) {
    Mesh out = malloc(sizeof(struct s_Mesh));
    out->verticies = vertices;
    out->indices = indices;
    out->textures = textures;

    out->numberOfTexture = numberOfTexture;
    out->numberOfIndices = numberOfIndices;

    out->VAO = initVAO();

    bindVAO(out->VAO);
    // Generates Vertex Buffer Object and links it to vertices
    VBO VBO1 = initVBO(vertices, sizeof(out->verticies));
    bindVBO(VBO1);
    //Generates Element Buffer Object and links it to indices
    EBO EBO1 = initEBO(indices, sizeof(out->indices));
    bindEBO(EBO1);
    //Links VBO attributes such as coordinates and colors to VAO
    if (coordsOnly) {
        linkAttrib(VBO1, 0, 3, GL_FLOAT, 3 * sizeof(float), (void *) 0);
    } else {
        linkAttrib(VBO1, 0, 3, GL_FLOAT, 11 * sizeof(float), (void *) 0);
        linkAttrib(VBO1, 1, 3, GL_FLOAT, 11 * sizeof(float), (void *) (3 * sizeof(float)));
        linkAttrib(VBO1, 2, 2, GL_FLOAT, 11 * sizeof(float), (void *) (6 * sizeof(float)));
        linkAttrib(VBO1, 3, 3, GL_FLOAT, 11 * sizeof(float), (void *) (8 * sizeof(float)));
    }
    //UnbindTexture all to prevent accidentally modifying them
    unBindVAO();
    unBindVBO();
    unBindEBO();

    return out;
}

grim umbra Jun 8, 2023, 4:07 PM

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i suggest you dont use any abstraction

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and just write your opengl thing in raw opengl, and keep it all in the main.cpp

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until you have a complete understanding of all the things

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and experimented with diffrent ways of rendering things perhaps

compact geode Jun 8, 2023, 4:08 PM

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I have a fully working one, it all broke when implementing the Mesh class. And I can't fugure what I am missing

grim umbra Jun 8, 2023, 4:08 PM

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drawindexed/instanced with and without textures... perhaps different vertex types

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hmm

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well but something is wrong with your vbo and ebo

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you can see that if you look at the data in renderdoc

compact geode Jun 8, 2023, 4:10 PM

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it least I know where to look

grim umbra Jun 8, 2023, 4:10 PM

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your size is also wrong

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glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, indices, GL_STATIC_DRAW);

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probably wrong for creating the vbo too

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size is in machine units, not in element count

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so 6 * sizeof(whateverdatattypeyouused)

compact geode Jun 8, 2023, 4:12 PM

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but the working one is EBO EBO1 = initEBO(indices, sizeof(indices));

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of yes 24

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so that's the issue

grim umbra Jun 8, 2023, 4:13 PM

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ye 24 is 6 * sizeof(uint) which is 6 * 4

compact geode Jun 8, 2023, 4:14 PM

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24 vs 88

grim umbra Jun 8, 2023, 4:14 PM

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make sure to h ave the openglspec open

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to lookup what the params mean for all these glThis and glThat

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its a bit conchfusing here and there and not always the same across all functions

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88 sounds more like a vertex element

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with pos/normal and uv for instance... that would be 3x4 + 3x4 + 2x8 ... ok thats more like 12 + 12 + 8 which is 32 times vertex count

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3 vertices is 32 * 3, which is 96, 96 bytes to store 3 vertices

compact geode Jun 8, 2023, 4:20 PM

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its working now thank you

#Finding the cause of gldrawelements gl_invalid_operation