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glBindVertexArray(VAO);
long int b = vertices_terrain.size(); // offset
for (int i = 0; i < b; i += 3)
{
vertices_terrain.push_back(0.0f);
vertices_terrain.push_back(0.0f);
vertices_terrain.push_back(0.5f);
vertices_terrain.push_back(1.0f);
vertices_terrain.push_back(1.0f);
vertices_terrain.push_back(0.0f);
}
glBindBuffer(GL_ARRAY_BUFFER, VBO_TERRAIN);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * vertices_terrain.size(), &vertices_terrain[0], GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO_TERRAIN);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLuint) * faces_terrain.size(), &faces_terrain[0], GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_TRUE, 0 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(0);
// Color attribute
//// TexCoord attribute
glVertexAttribPointer(2, 2, GL_FLOAT, GL_TRUE, 0 * sizeof(GLfloat), (GLvoid*)(b * sizeof(GLfloat)));
glEnableVertexAttribArray(2);
GLuint texture1;
glGenTextures(1, &texture1);
glBindTexture(GL_TEXTURE_2D, texture1); // All upcoming GL_TEXTURE_2D operations now have effect on our texture object
// Set our texture parameters
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture wrapping to GL_REPEAT
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
// Set texture filtering
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Load, create texture and generate mipmaps
int width, height;
unsigned char* image = SOIL_load_image("../imgp0913.jpg", &width, &height, 0, SOIL_LOAD_RGB);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
glGenerateMipmap(GL_TEXTURE_2D);
SOIL_free_image_data(image);
glBindTexture(GL_TEXTURE_2D, 0);
while (!glfwWindowShouldClose(window))
{
glfwPollEvents();
glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glm::mat4 view;
glm::mat4 model3;
// Projection
model3 = glm::scale(model3, glm::vec3(0.9f));
model3 = glm::rotate(model3, -20.0f, glm::vec3(1.0f, 0.0f, 0.0f));
view = glm::translate(view, glm::vec3(0.0f, 0.0f, -10.0f));
glm::mat4 projection;
projection = glm::perspective(20.0f, (GLfloat)WINDOW_WIDTH / (GLfloat)WINDOW_HEIGHT, 0.1f, 100.0f);
// Get the uniform locations
GLint modelLoc = glGetUniformLocation(shader.Program, "model");
GLint viewLoc = glGetUniformLocation(shader.Program, "view");
GLint projLoc = glGetUniformLocation(shader.Program, "projection");
// Pass the matrices to the shader
glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model3));
glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(projection));
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture1);
glUniform1i(glGetUniformLocation(shader.Program, "ourTexture1"), 0);
shader.Use();
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, faces_terrain.size(), GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
glfwSwapBuffers(window);
} |
Affichage texture anormale (très étirée et buguée)
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Envoyé par j_sb12
après faut bouffer du tutoriel/examples pour bien assimiler.
, par contre c'est pas trop optimiser pour OpenGl qui doit sans cesse se replacer sur le buffer pour alimenter les shader(sur les gros model en tout cas)
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