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fix quad element buffer generation

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This commit is contained in:
veclavtalica 2024-07-31 11:32:55 +03:00
parent e74cc6bf94
commit 5069104cdb
1 changed files with 5 additions and 1 deletions
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6
townengine/rendering/quad_element_buffer.h
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@ -2,6 +2,8 @@
#ifndef QUAD_ELEMENT_BUFFER_H #ifndef QUAD_ELEMENT_BUFFER_H
#define QUAD_ELEMENT_BUFFER_H #define QUAD_ELEMENT_BUFFER_H
#include "townengine/util.h"
#include <glad/glad.h> #include <glad/glad.h>
#include <stddef.h> #include <stddef.h>
@ -16,12 +18,14 @@ static void bind_quad_element_buffer(void) {
glGenBuffers(1, &buffer); glGenBuffers(1, &buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, glBufferData(GL_ELEMENT_ARRAY_BUFFER,
QUAD_ELEMENT_BUFFER_LENGTH * 6, QUAD_ELEMENT_BUFFER_LENGTH * 6 * sizeof(uint16_t),
NULL, NULL,
GL_STATIC_DRAW); GL_STATIC_DRAW);
uint16_t *const indices = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, uint16_t *const indices = glMapBuffer(GL_ELEMENT_ARRAY_BUFFER,
GL_WRITE_ONLY); GL_WRITE_ONLY);
if (!indices)
CRY("Quad indices generation", "glMapBuffer() failed");
for (uint16_t i = 0; i < QUAD_ELEMENT_BUFFER_LENGTH; ++i) { for (uint16_t i = 0; i < QUAD_ELEMENT_BUFFER_LENGTH; ++i) {
indices[i * 6 + 0] = (uint16_t)(i * 4 + 0); indices[i * 6 + 0] = (uint16_t)(i * 4 + 0);