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Drawing a textured quad

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Added new assets
Loaded all texture assets into game state
Loaded the basic pipeline
Setup a hard-coded quad to test drawing
Created a very jank vertex struct
Added ReadEntireFile for filesystem
Added getting file size from file handle
Added a descriptor pool to each in flight frame
Changed Vk_BufferCreate to handle multiple uses
Added shader building to the windows.bat build script
This commit is contained in:
James Bulman
2025-10-04 21:42:04 +01:00
parent b1a805cea8
commit 187359f747
27 changed files with 470 additions and 57 deletions
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81
code/first.c
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@@ -29,9 +29,33 @@ int main(int argc, char **argv) {
Vk_Setup(window);
G_State *game = 0;
{
M_Arena *arena = M_ArenaAlloc(GB(64), .initial = MB(4));
game = M_ArenaPush(arena, G_State);
M_Arena *garena = M_ArenaAlloc(GB(64), .initial = MB(4));
G_ImagesLoad(garena);
game->arena = arena;
G_ImagesLoad(game);
G_PipelinesLoad(game);
Vk_Buffer *vbo = &game->vbo;
vbo->size = KB(4096);
vbo->usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
vbo->host_visible = true;
Vk_BufferCreate(vbo);
G_Vertex *vertices = cast(G_Vertex *) vbo->data;
vertices[0] = (G_Vertex) { -0.25f, -0.25f, 1.0f, 1.0f, 0.0f, 0.0f, 0xFFFFFFFF, 0};
vertices[1] = (G_Vertex) { 0.25f, -0.25f, 1.0f, 1.0f, 1.0f, 0.0f, 0xFFFFFFFF, 0};
vertices[2] = (G_Vertex) { -0.25f, 0.25f, 1.0f, 1.0f, 0.0f, 1.0f, 0xFFFFFFFF, 0};
vertices[3] = (G_Vertex) { 0.25f, -0.25f, 1.0f, 1.0f, 1.0f, 0.0f, 0xFFFFFFFF, 0};
vertices[4] = (G_Vertex) { 0.25f, 0.25f, 1.0f, 1.0f, 1.0f, 1.0f, 0xFFFFFFFF, 0};
vertices[5] = (G_Vertex) { -0.25f, 0.25f, 1.0f, 1.0f, 0.0f, 1.0f, 0xFFFFFFFF, 0};
}
bool running = true;
while (running) {
@@ -69,6 +93,59 @@ int main(int argc, char **argv) {
vk.CmdBeginRendering(cmd, &rendering_info);
Vk_Pipeline *basic = &game->pipelines[0];
VkDescriptorSet set;
VkDescriptorSetAllocateInfo alloc_info = { 0 };
alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
alloc_info.descriptorPool = frame->descriptors;
alloc_info.descriptorSetCount = 1;
alloc_info.pSetLayouts = &basic->layout.set;
vk.AllocateDescriptorSets(vk.device, &alloc_info, &set);
// 'update' the descriptor sets for binding
{
VkWriteDescriptorSet writes[2] = { 0 };
VkDescriptorBufferInfo vbo_info = { 0 };
vbo_info.buffer = game->vbo.handle;
vbo_info.offset = 0;
vbo_info.range = 256;
VkDescriptorImageInfo image_info = { 0 };
image_info.imageView = game->images[6].image.view;
image_info.sampler = vk.sampler;
image_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
writes[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writes[0].dstSet = set;
writes[0].dstBinding = 0;
writes[0].descriptorCount = 1;
writes[0].descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
writes[0].pBufferInfo = &vbo_info;
writes[1].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
writes[1].dstSet = set;
writes[1].dstBinding = 1;
writes[1].descriptorCount = 1;
writes[1].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
writes[1].pImageInfo = &image_info;
vk.UpdateDescriptorSets(vk.device, ArraySize(writes), writes, 0, 0);
}
vk.CmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, basic->handle);
vk.CmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, basic->layout.pipeline, 0, 1, &set, 0, 0);
VkViewport viewport = { 0, 0, (F32) w, (F32) h, 0.0f, 1.0f };
VkRect2D scissor = { 0, 0, w, h };
vk.CmdSetViewport(cmd, 0, 1, &viewport);
vk.CmdSetScissor(cmd, 0, 1, &scissor);
vk.CmdDraw(cmd, 6, 1, 0, 0);
vk.CmdEndRendering(cmd);
Vk_FrameEnd();