def create_pipeline():
global pipeline, pipeline_cache
width, height = window.dimensions()
viewport = hvk.viewport(width=width, height=height)
render_area = hvk.rect_2d(0, 0, width, height)
pipeline_info = hvk.graphics_pipeline_create_info(
stages=stage_infos,
vertex_input_state=hvk.pipeline_vertex_input_state_create_info(
vertex_binding_descriptions=vertex_bindings,
vertex_attribute_descriptions=vertex_attributes),
input_assembly_state=hvk.pipeline_input_assembly_state_create_info(),
viewport_state=hvk.pipeline_viewport_state_create_info(
viewports=(viewport, ), scissors=(render_area, )),
rasterization_state=hvk.pipeline_rasterization_state_create_info(),
multisample_state=hvk.pipeline_multisample_state_create_info(),
depth_stencil_state=hvk.pipeline_depth_stencil_state_create_info(
depth_test_enable=vk.TRUE,
depth_write_enable=vk.TRUE,
depth_compare_op=vk.COMPARE_OP_LESS_OR_EQUAL,
),
color_blend_state=hvk.pipeline_color_blend_state_create_info(
attachments=(hvk.pipeline_color_blend_attachment_state(), )),
layout=pipeline_layout,
render_pass=render_pass)
pipeline_cache = hvk.create_pipeline_cache(
api, device, hvk.pipeline_cache_create_info())
pipeline = hvk.create_graphics_pipelines(api, device, (pipeline_info, ),
pipeline_cache)[0]
def record_render_commands():
# Render commands recording
begin_info = hvk.command_buffer_begin_info()
width, height = window.dimensions()
render_pass_begin = hvk.render_pass_begin_info(
render_pass=render_pass,
framebuffer=0,
render_area=hvk.rect_2d(0, 0, width, height),
clear_values=(hvk.clear_value(color=(0.0, 0.0, 0.0, 1.0)),
hvk.clear_value(depth=1.0, stencil=0)))
for framebuffer, cmd in zip(framebuffers, cmd_draw):
render_pass_begin.framebuffer = framebuffer
hvk.begin_command_buffer(api, cmd, begin_info)
hvk.begin_render_pass(api, cmd, render_pass_begin,
vk.SUBPASS_CONTENTS_INLINE)
hvk.bind_pipeline(api, cmd, pipeline, vk.PIPELINE_BIND_POINT_GRAPHICS)
hvk.bind_index_buffer(api, cmd, mesh_buffer, mesh_indices['offset'],
vk.INDEX_TYPE_UINT16)
hvk.bind_vertex_buffers(api, cmd, (mesh_buffer, ),
(mesh_positions['offset'], ))
hvk.draw_indexed(api, cmd, mesh_indices['count'])
hvk.end_render_pass(api, cmd)
hvk.end_command_buffer(api, cmd)
def _setup_render_cache(self):
rc = self.render_cache
width, height = self.engine.info["swapchain_extent"].values()
viewport = hvk.viewport(width=width, height=height)
scissor = hvk.rect_2d(0, 0, width, height)
render_pass_begin = hvk.render_pass_begin_info(
render_pass=self.engine.render_target.render_pass,
framebuffer=0,
render_area=hvk.rect_2d(0, 0, 0, 0),
clear_values=(hvk.clear_value(color=(0.15, 0.15, 0.15, 1.0)),
hvk.clear_value(depth=1.0, stencil=0)))
rc["begin_info"] = hvk.command_buffer_begin_info()
rc["viewports"] = (viewport, )
rc["scissors"] = (scissor, )
rc["render_pass_begin_info"] = render_pass_begin
rc["render_area_extent"] = render_pass_begin.render_area.extent