Vertex_clear - hpgDesigns/hpgdesigns-dev.io GitHub Wiki

Description

Clears the client-side data in the given vertex buffer and marks it dirty as well as no longer frozen. This means the backend will upload new vertex data the next time the vertex buffer is submitted for rendering. After this function is called, and before the vertex buffer is submitted, new vertex data can be supplied that will replace the old vertex data.

Parameters

Parameter	Data Type	Description
buffer	integer	Index of the vertex buffer.

Return Values

void: This function does not return anything.

Example Call

// demonstrates clearing a static vertex buffer so that it's vertex data can be specified again
vertex_clear(static_buffer);

// add a triangle to a vertex buffer we want to be static
vertex_begin(static_buffer, vf_color_position);
vertex_color(static_buffer, c_red, 1);
vertex_position(static_buffer, 100, room_height - 100);
vertex_color(static_buffer, c_green, 1);
vertex_position(static_buffer, room_width / 2, 100);
vertex_color(static_buffer, c_blue, 1);
vertex_position(static_buffer, room_width - 100, 100);
vertex_end(static_buffer);

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