Render first triangle
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ed1b9db61e
commit
0e348fe0a0
13
src/main.zig
13
src/main.zig
@ -11,6 +11,7 @@ const framebuffers_mod = @import("vulkan/framebuffers.zig");
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const render_pass_mod = @import("vulkan/render_pass.zig");
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const swapchain_mod = @import("vulkan/swapchain.zig");
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const sync_mod = @import("vulkan/sync.zig");
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const pipeline_mod = @import("vulkan/pipeline.zig");
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// The build script compiles these GLSL files to SPIR-V and exposes them as
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// anonymous imports. They are currently only loaded and printed; the program
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@ -85,6 +86,9 @@ pub fn main() !void {
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var render_pass_context = try render_pass_mod.initRenderPass(ldc, swapchain_context.format.format);
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defer render_pass_context.destroy(&ldc);
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var pipeline_context = try pipeline_mod.initPipelineContext(ldc, swapchain_context.extent, render_pass_context.render_pass, square_vert_spv, square_frag_spv, std.heap.page_allocator);
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defer pipeline_context.destroy(&ldc);
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var framebuffer_context = try framebuffers_mod.initFramebuffers(
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ldc,
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render_pass_context,
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@ -97,6 +101,7 @@ pub fn main() !void {
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ldc,
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render_pass_context,
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framebuffer_context,
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pipeline_context,
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swapchain_context,
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std.heap.page_allocator,
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);
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@ -123,6 +128,7 @@ pub fn main() !void {
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&swapchain_context,
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&render_pass_context,
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&framebuffer_context,
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&pipeline_context,
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&command_context,
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std.heap.page_allocator,
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);
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@ -140,6 +146,7 @@ fn recreateSwapchain(
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swapchain_context: *swapchain_mod.SwapchainContext,
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render_pass_context: *render_pass_mod.RenderPassContext,
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framebuffer_context: *framebuffers_mod.FramebufferContext,
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pipeline_context: *pipeline_mod.PipelineContext,
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command_context: *commands_mod.CommandContext,
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allocator: std.mem.Allocator,
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) !void {
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@ -171,6 +178,9 @@ fn recreateSwapchain(
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const new_render_pass_context = try render_pass_mod.initRenderPass(ldc, new_swapchain_context.format.format);
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errdefer new_render_pass_context.destroy(&ldc);
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const new_pipeline_context = try pipeline_mod.initPipelineContext(ldc, swapchain_context.extent, render_pass_context.render_pass, square_vert_spv, square_frag_spv, std.heap.page_allocator);
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errdefer pipeline_context.destroy(&ldc);
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const new_framebuffer_context = try framebuffers_mod.initFramebuffers(
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ldc,
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new_render_pass_context,
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@ -183,6 +193,7 @@ fn recreateSwapchain(
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ldc,
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new_render_pass_context,
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new_framebuffer_context,
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new_pipeline_context,
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new_swapchain_context,
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allocator,
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);
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@ -193,11 +204,13 @@ fn recreateSwapchain(
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// swapchain/image views/images.
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command_context.destroy(&ldc);
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framebuffer_context.destroy(&ldc);
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pipeline_context.destroy(&ldc);
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render_pass_context.destroy(&ldc);
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swapchain_context.destroy(&ldc);
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swapchain_context.* = new_swapchain_context;
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render_pass_context.* = new_render_pass_context;
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pipeline_context.* = new_pipeline_context;
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framebuffer_context.* = new_framebuffer_context;
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command_context.* = new_command_context;
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@ -5,6 +5,7 @@ const device = @import("device.zig");
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const framebuffers = @import("framebuffers.zig");
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const render_pass = @import("render_pass.zig");
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const swapchain = @import("swapchain.zig");
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const pipeline = @import("pipeline.zig");
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pub const CommandContext = struct {
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command_pool: vk.CommandPool,
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@ -21,6 +22,7 @@ pub fn initCommandBuffers(
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ldc: device.LogicalDeviceContext,
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render_pass_context: render_pass.RenderPassContext,
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framebuffer_context: framebuffers.FramebufferContext,
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pipeline_context: pipeline.PipelineContext,
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swapchain_context: swapchain.SwapchainContext,
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allocator: std.mem.Allocator,
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) !CommandContext {
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@ -86,6 +88,14 @@ pub fn initCommandBuffers(
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.@"inline",
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);
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ldc.vkd.cmdBindPipeline(
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command_buffer,
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.graphics,
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pipeline_context.graphics_pipeline,
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);
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ldc.vkd.cmdDraw(command_buffer, 3, 1, 0, 0);
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ldc.vkd.cmdEndRenderPass(command_buffer);
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try ldc.vkd.endCommandBuffer(command_buffer);
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@ -1,14 +1,183 @@
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const std = @import("std");
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const vk = @import("vulkan");
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const device = @import("device.zig");
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pub fn createShaderModule(ldc: device.LogicalDeviceContext, spv: []const u8) !vk.ShaderModule {
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pub const PipelineContext = struct {
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graphics_pipeline: vk.Pipeline,
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pipeline_layout: vk.PipelineLayout,
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pub fn destroy(self: *const PipelineContext, ldc: *const device.LogicalDeviceContext) void {
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ldc.vkd.destroyPipeline(ldc.device, self.graphics_pipeline, null);
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ldc.vkd.destroyPipelineLayout(ldc.device, self.pipeline_layout, null);
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}
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};
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pub fn createShaderModule(ldc: device.LogicalDeviceContext, allocator: std.mem.Allocator, spv: []const u8) !vk.ShaderModule {
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if (spv.len % 4 != 0) return error.InvalidSpirVSize;
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const words = try allocator.alloc(u32, spv.len / 4);
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defer allocator.free(words);
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const word_bytes = std.mem.sliceAsBytes(words);
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std.mem.copyForwards(u8, word_bytes, spv);
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const create_info = vk.ShaderModuleCreateInfo{
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.code_size = spv.len,
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.p_code = @ptrCast(@alignCast(spv.ptr)),
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.p_code = words.ptr,
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};
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return try ldc.vkd.createShaderModule(ldc.device, &create_info, null);
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}
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pub fn initPipelineContext(ldc: device.LogicalDeviceContext, extent: vk.Extent2D, render_pass: vk.RenderPass, vert_spv: []const u8, frag_spv: []const u8, allocator: std.mem.Allocator) !PipelineContext {
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const pipeline_layout_create_info = vk.PipelineLayoutCreateInfo{};
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const pipeline_layout = try ldc.vkd.createPipelineLayout(
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ldc.device,
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&pipeline_layout_create_info,
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null,
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);
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errdefer ldc.vkd.destroyPipelineLayout(ldc.device, pipeline_layout, null);
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const vert_shader_module = try createShaderModule(ldc, allocator, vert_spv);
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defer ldc.vkd.destroyShaderModule(ldc.device, vert_shader_module, null);
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const frag_shader_module = try createShaderModule(ldc, allocator, frag_spv);
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defer ldc.vkd.destroyShaderModule(ldc.device, frag_shader_module, null);
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const vert_shader_stage_info = vk.PipelineShaderStageCreateInfo{
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.stage = .{ .vertex_bit = true },
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.module = vert_shader_module,
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.p_name = "main",
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};
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const frag_shader_stage_info = vk.PipelineShaderStageCreateInfo{
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.stage = .{ .fragment_bit = true },
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.module = frag_shader_module,
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.p_name = "main",
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};
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const shader_stages = [_]vk.PipelineShaderStageCreateInfo{
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vert_shader_stage_info,
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frag_shader_stage_info,
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};
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const vertex_input_info = vk.PipelineVertexInputStateCreateInfo{
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.vertex_binding_description_count = 0,
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.p_vertex_binding_descriptions = null,
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.vertex_attribute_description_count = 0,
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.p_vertex_attribute_descriptions = null,
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};
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const input_assembly = vk.PipelineInputAssemblyStateCreateInfo{
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.topology = .triangle_list,
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.primitive_restart_enable = .false,
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};
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const viewport = vk.Viewport{
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.x = 0.0,
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.y = 0.0,
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.width = @floatFromInt(extent.width),
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.height = @floatFromInt(extent.height),
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.min_depth = 0.0,
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.max_depth = 1.0,
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};
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const scissor = vk.Rect2D{
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.offset = .{ .x = 0, .y = 0 },
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.extent = extent,
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};
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const viewport_state = vk.PipelineViewportStateCreateInfo{
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.viewport_count = 1,
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.p_viewports = @ptrCast(&viewport),
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.scissor_count = 1,
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.p_scissors = @ptrCast(&scissor),
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};
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const rasterizer = vk.PipelineRasterizationStateCreateInfo{
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.depth_clamp_enable = .false,
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.rasterizer_discard_enable = .false,
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.polygon_mode = .fill,
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.line_width = 1.0,
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.cull_mode = .{
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.back_bit = true,
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},
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.front_face = .clockwise,
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.depth_bias_enable = .false,
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.depth_bias_constant_factor = 0.0,
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.depth_bias_clamp = 0.0,
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.depth_bias_slope_factor = 0.0,
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};
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const multisampling = vk.PipelineMultisampleStateCreateInfo{
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.sample_shading_enable = .false,
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.rasterization_samples = .{ .@"1_bit" = true },
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.min_sample_shading = 1.0,
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.p_sample_mask = null,
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.alpha_to_coverage_enable = .false,
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.alpha_to_one_enable = .false,
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};
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const color_blend_attachment = vk.PipelineColorBlendAttachmentState{
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.color_write_mask = .{
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.r_bit = true,
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.g_bit = true,
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.b_bit = true,
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.a_bit = true,
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},
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.blend_enable = .false,
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.src_color_blend_factor = .one,
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.dst_color_blend_factor = .zero,
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.color_blend_op = .add,
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.src_alpha_blend_factor = .one,
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.dst_alpha_blend_factor = .zero,
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.alpha_blend_op = .add,
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};
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const color_blending = vk.PipelineColorBlendStateCreateInfo{
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.logic_op_enable = .false,
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.attachment_count = 1,
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.p_attachments = @ptrCast(&color_blend_attachment),
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.blend_constants = .{ 0.0, 0.0, 0.0, 0.0 },
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.logic_op = .copy,
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};
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const pipeline_info = vk.GraphicsPipelineCreateInfo{
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.stage_count = shader_stages.len,
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.p_stages = &shader_stages,
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.p_vertex_input_state = &vertex_input_info,
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.p_input_assembly_state = &input_assembly,
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.p_viewport_state = &viewport_state,
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.p_rasterization_state = &rasterizer,
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.p_multisample_state = &multisampling,
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.p_depth_stencil_state = null,
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.p_color_blend_state = &color_blending,
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.p_dynamic_state = null,
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.layout = pipeline_layout,
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.render_pass = render_pass,
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.subpass = 0,
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.base_pipeline_handle = .null_handle,
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.base_pipeline_index = -1,
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};
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const pipeline_infos = [_]vk.GraphicsPipelineCreateInfo{
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pipeline_info,
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};
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var pipelines: [1]vk.Pipeline = undefined;
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_ = try ldc.vkd.createGraphicsPipelines(
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ldc.device,
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.null_handle,
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&pipeline_infos,
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null,
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&pipelines,
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);
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return .{
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.graphics_pipeline = pipelines[0],
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.pipeline_layout = pipeline_layout,
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};
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}
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