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No need for mip maps in empty textures

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korenkonder
2023-04-25 22:40:45 +03:00
parent 7c86b96412
commit ef08d8de77
1 changed files with 6 additions and 10 deletions
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src/CRE/render_context.cpp
+6 -10
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@@ -2571,23 +2571,19 @@ matrix_buffer(), box_vao(), box_vbo(), empty_texture_2d(), empty_texture_cube_ma
GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
};
static const int32_t max_level = 2;
glGenTextures(1, &empty_texture_2d);
gl_state_bind_texture_2d(empty_texture_2d);
texture_set_params(empty_texture_2d, GL_TEXTURE_2D, max_level, false);
for (int32_t level = 0, size = 1 << max_level; level <= max_level; size /= 2, level++)
glCompressedTexImage2D(GL_TEXTURE_2D, level,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, size, size, 0, 8, empty_texture_data);
texture_set_params(empty_texture_2d, GL_TEXTURE_2D, 0, false);
glCompressedTexImage2D(GL_TEXTURE_2D, 0,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 4, 4, 0, 8, empty_texture_data);
gl_state_bind_texture_2d(0);
glGenTextures(1, &empty_texture_cube_map);
gl_state_bind_texture_cube_map(empty_texture_cube_map);
texture_set_params(empty_texture_cube_map, GL_TEXTURE_CUBE_MAP, max_level, false);
texture_set_params(empty_texture_cube_map, GL_TEXTURE_CUBE_MAP, 0, false);
for (int32_t side = 0; side < 6; side++)
for (int32_t level = 0, size = 1 << max_level; level <= max_level; size /= 2, level++)
glCompressedTexImage2D(target_cube_map_array[side], level,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, size, size, 0, 8, empty_texture_data);
glCompressedTexImage2D(target_cube_map_array[side], 0,
GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, 4, 4, 0, 8, empty_texture_data);
gl_state_bind_texture_cube_map(0);
}