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Optimized Glitter Render Buffer's EBO a bit

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korenkonder
2023-09-25 20:55:56 +03:00
parent dbdda5e76b
commit d9ad883ee4
2 changed files with 10 additions and 11 deletions
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src/CRE/Glitter/render_group.cpp
+9 -10
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@@ -96,24 +96,23 @@ namespace Glitter {
if (is_quad) {
size_t count = max_count / 4 * 5;
uint32_t* ebo_data = force_malloc<uint32_t>(count - 1);
for (size_t i = 0, j = 0, k = count / 5 - 1; i < count; i += 5, j += 4, k--) {
ebo_data[i + 0] = (uint32_t)(j + 0);
ebo_data[i + 1] = (uint32_t)(j + 1);
ebo_data[i + 2] = (uint32_t)(j + 3);
ebo_data[i + 3] = (uint32_t)(j + 2);
if (k)
ebo_data[i + 4] = 0xFFFFFFFF;
uint16_t* ebo_data = force_malloc<uint16_t>(count);
for (size_t i = 0, j = 0, k = count; k; i += 5, j += 4, k -= 5) {
ebo_data[i + 0] = (uint16_t)(j + 0);
ebo_data[i + 1] = (uint16_t)(j + 1);
ebo_data[i + 2] = (uint16_t)(j + 3);
ebo_data[i + 3] = (uint16_t)(j + 2);
ebo_data[i + 4] = (uint16_t)0xFFFFFFFF;
}
glGenBuffers(1, &ebo);
gl_state_bind_element_array_buffer(ebo, true);
if (GLAD_GL_VERSION_4_4)
glBufferStorage(GL_ELEMENT_ARRAY_BUFFER,
(GLsizeiptr)(sizeof(uint32_t) * (count - 1)), ebo_data, 0);
(GLsizeiptr)(sizeof(uint16_t) * count), ebo_data, 0);
else
glBufferData(GL_ELEMENT_ARRAY_BUFFER,
(GLsizeiptr)(sizeof(uint32_t) * (count - 1)), ebo_data, GL_STATIC_DRAW);
(GLsizeiptr)(sizeof(uint16_t) * count), ebo_data, GL_STATIC_DRAW);
free_def(ebo_data);
}