Fixed shader buffer alignments

client/include/ui.h

@@ -20,7 +20,7 @@ typedef struct GraphicsPipelineStruct {
 } GraphicsPipeline;
 
 typedef struct ColoredRectStruct {
-  vec3 pos;
+  vec4 pos;
   vec2 size;
   vec4 color;
 } ColoredRect;
@@ -30,7 +30,7 @@ typedef struct UIUniformStruct {
 } UIUniform;
 
 typedef struct StringStruct {
-  vec3 pos;
+  vec4 pos;
   vec4 color;
   float size;
   uint32_t offset;
@@ -52,7 +52,7 @@ typedef struct StringPointersStruct {
 } StringPointers;
 
 typedef struct CharacterStruct {
-  vec3     pos;
+  vec4     pos;
   vec4     color;
   float    size;
   uint32_t code;
@@ -100,12 +100,8 @@ typedef struct TextPointersMemoryStruct {
 } TextPointersMemory;
 
 typedef struct UILayerStruct {
-  VkBuffer colored_rects;
-  uint32_t colored_rect_count;
-
-  VkBuffer        textured_rects;
-  uint32_t        textured_rect_count;
-  VkDescriptorSet textured_rect_descriptor;
+  VkDeviceAddress colored_rects;
+  uint32_t        colored_rect_count;
 
   VkBuffer        string_draw;
   VkBuffer        chars;

client/shader_src/ui_colored_rect.vert

@@ -5,9 +5,19 @@ layout(set = 0, binding = 0) uniform UIUniform {
   mat4 screen;
 } ubo;
 
-layout(location = 0) in vec3 inPolygonPosition;
-layout(location = 1) in vec2 inPolygonSize;
-layout(location = 2) in vec4 inColor;
+struct Rect {
+  vec4 pos;
+  vec2 size;
+  vec4 color;
+};
+
+layout(std430, buffer_reference) readonly buffer RectList {
+  Rect r[];
+};
+
+layout(std430, push_constant) uniform PushConstant {
+  RectList rects;
+} pc;
 
 layout(location = 0) out vec4 fragColor;
 
@@ -21,7 +31,8 @@ const vec2 square[6] = {
 };
 
 void main() {
-  gl_Position = ubo.screen * vec4(vec3(square[gl_VertexIndex] * inPolygonSize, 0.0) + inPolygonPosition, 1.0);
-  fragColor = inColor;
+  Rect rect = pc.rects.r[gl_InstanceIndex];
+  gl_Position = ubo.screen * vec4(vec3(square[gl_VertexIndex] * rect.size, 0.0) + rect.pos.xyz, 1.0);
+  fragColor = rect.color;
 }
 

client/shader_src/ui_text.comp

@@ -10,14 +10,14 @@ struct Symbol {
 };
 
 struct Character {
-  vec3 pos;
+  vec4 pos;
   vec4 color;
   float size;
   uint code;
 };
 
 struct String {
-  vec3 pos;
+  vec4 pos;
   vec4 color;
   float size;
   uint offset;
@@ -75,7 +75,7 @@ void main() {
   float x = 0;
   for(uint i = 0; i < string.len; i++) {
     Symbol symbol = font.symbol_list.symbols[push.pointers.codes.codes[string.offset + i]];
-    push.pointers.characters.characters[buffer_pos + i].pos = string.pos + vec3(x, 0, 0);
+    push.pointers.characters.characters[buffer_pos + i].pos = vec4(string.pos.xyz + vec3(x, 0, 0), 0);
     x += string.size*symbol.advance/font.width;
     push.pointers.characters.characters[buffer_pos + i].size = string.size;
     push.pointers.characters.characters[buffer_pos + i].color = string.color;

client/shader_src/ui_text.vert

@@ -10,7 +10,7 @@ struct Symbol {
 };
 
 struct Character {
-  vec3 pos;
+  vec4 pos;
   vec4 color;
   float size;
   uint code;
@@ -68,7 +68,7 @@ void main() {
 
   fragUV = vec2(fragU, fragV);
   fragColor = character.color;
-  gl_Position = ubo.screen * vec4(vec3(x, y, 0.0) + character.pos, 1.0);
+  gl_Position = ubo.screen * vec4(vec3(x, y, 0.0) + character.pos.xyz, 1.0);
   code = character.code;
 }
 

client/src/main.c

@@ -8,15 +8,6 @@
 #include "ft2build.h"
 #include FT_FREETYPE_H
 
-ColoredRect colored_rect(float width, float height, float r, float g, float b, float a, float x, float y, float z) {
-  ColoredRect rect = {
-    .size = {width, height},
-    .pos = {x, y, z},
-    .color = {r, g, b, a},
-  };
-  return rect;
-}
-
 VkResult render_thread(GLFWwindow* window, RenderContext* render_context) {
   VkResult result;
   UIContext ui_context;
@@ -42,7 +33,7 @@ VkResult render_thread(GLFWwindow* window, RenderContext* render_context) {
 
   VkBufferCreateInfo colored_rect_buffer_info = {
     .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
-    .usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
+    .usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT,
     .size = 3*sizeof(ColoredRect),
     .sharingMode = VK_SHARING_MODE_EXCLUSIVE,
   };
@@ -63,9 +54,36 @@ VkResult render_thread(GLFWwindow* window, RenderContext* render_context) {
     return result;
   }
 
-  colored_rects[0] = colored_rect(100.0, 100.0, 1.0, 0.0, 0.0, 1.0,   0.0,   0.0, 0.5);
-  colored_rects[1] = colored_rect(100.0, 100.0, 0.0, 1.0, 0.0, 1.0,   0.0, 100.0, 0.5);
-  colored_rects[2] = colored_rect(100.0, 100.0, 0.0, 0.0, 1.0, 1.0, 100.0,   0.0, 0.5);
+  colored_rects[0].pos[0] = 0.0;
+  colored_rects[0].pos[1] = 0.0;
+  colored_rects[0].pos[2] = 0.5;
+  colored_rects[0].size[0] = 100.0;
+  colored_rects[0].size[1] = 100.0;
+  colored_rects[0].color[0] = 1.0;
+  colored_rects[0].color[1] = 0.0;
+  colored_rects[0].color[2] = 0.0;
+  colored_rects[0].color[3] = 1.0;
+
+  colored_rects[1].pos[0] = 0.0;
+  colored_rects[1].pos[1] = 100.0;
+  colored_rects[1].pos[2] = 0.5;
+  colored_rects[1].size[0] = 100.0;
+  colored_rects[1].size[1] = 100.0;
+  colored_rects[1].color[0] = 0.0;
+  colored_rects[1].color[1] = 0.0;
+  colored_rects[1].color[2] = 1.0;
+  colored_rects[1].color[3] = 1.0;
+
+  colored_rects[2].pos[0] = 100.0;
+  colored_rects[2].pos[1] = 0.0;
+  colored_rects[2].pos[2] = 0.5;
+  colored_rects[2].size[0] = 100.0;
+  colored_rects[2].size[1] = 100.0;
+  colored_rects[2].color[0] = 0.0;
+  colored_rects[2].color[1] = 1.0;
+  colored_rects[2].color[2] = 0.0;
+  colored_rects[2].color[3] = 1.0;
+
 
   vmaUnmapMemory(render_context->allocator, colored_rect_memory);
 
@@ -132,8 +150,14 @@ VkResult render_thread(GLFWwindow* window, RenderContext* render_context) {
   vmaUnmapMemory(render_context->allocator, temp_memory);
   vmaDestroyBuffer(render_context->allocator, temp_buffer, temp_memory);
 
+
+  VkBufferDeviceAddressInfo colored_rect_address_info = {
+    .sType = VK_STRUCTURE_TYPE_BUFFER_DEVICE_ADDRESS_INFO,
+    .buffer = colored_rect_buffer,
+  };
+
   UILayer test_layer = {
-    .colored_rects = colored_rect_buffer,
+    .colored_rects = vkGetBufferDeviceAddress(render_context->device, &colored_rect_address_info),
     .colored_rect_count = 3,
 
     .font = test_font,

client/src/render.c

@@ -1024,7 +1024,6 @@ VkResult draw_frame(RenderContext* context, UIContext* ui_context, UILayer* ui_l
   vkCmdSetScissor(command_buffer, 0, 1, &scissor);
 
   VkClearValue clear_values[2] = {{.color={{0.0f, 0.0f, 0.0f, 1.0f}}}, {.depthStencil={1.0f, 0.0f}}};
-  VkDeviceSize offset = 0;
 
   VkRenderPassBeginInfo render_pass_begin = {
     .sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
@@ -1094,7 +1093,7 @@ VkResult draw_frame(RenderContext* context, UIContext* ui_context, UILayer* ui_l
 
   for(uint32_t i = 0; i < ui_layer_count; i++) {
     if(ui_layers[i].colored_rect_count > 0) {
-      vkCmdBindVertexBuffers(command_buffer, 0, 1, &ui_layers[i].colored_rects, &offset);
+      vkCmdPushConstants(command_buffer, ui_context->ui_pipeline_rect.layout, VK_SHADER_STAGE_VERTEX_BIT, 0, 8, &ui_layers[i].colored_rects);
       vkCmdDraw(command_buffer, 6, ui_layers[i].colored_rect_count, 0, 0);
     }
   }

client/src/ui.c

@@ -200,36 +200,9 @@ VkResult create_ui_colored_rect_pipeline(VkDevice device, VkRenderPass render_pa
     },
   };
 
-  VkVertexInputBindingDescription bindings[] = {
-    {
-      .binding = 0,
-      .stride = sizeof(ColoredRect),
-      .inputRate = VK_VERTEX_INPUT_RATE_INSTANCE,
-    },
-  };
-
-  VkVertexInputAttributeDescription attributes[] = {
-    {
-      .binding = 0,
-      .location = 0,
-      .format = VK_FORMAT_R32G32B32_SFLOAT,
-      .offset = offsetof(ColoredRect, pos),
-    },
-    {
-      .binding = 0,
-      .location = 1,
-      .format = VK_FORMAT_R32G32_SFLOAT,
-      .offset = offsetof(ColoredRect, size),
-    },
-    {
-      .binding = 0,
-      .location = 2,
-      .format = VK_FORMAT_R32G32B32A32_SFLOAT,
-      .offset = offsetof(ColoredRect, color),
-    },
-  };
-
-VkPipelineVertexInputStateCreateInfo input_info = {
+  VkVertexInputBindingDescription bindings[] = {};
+  VkVertexInputAttributeDescription attributes[] = {};
+  VkPipelineVertexInputStateCreateInfo input_info = {
     .sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO,
     .pVertexBindingDescriptions = bindings,
     .vertexBindingDescriptionCount = sizeof(bindings)/sizeof(VkVertexInputBindingDescription),
@@ -237,10 +210,17 @@ VkPipelineVertexInputStateCreateInfo input_info = {
     .vertexAttributeDescriptionCount = sizeof(attributes)/sizeof(VkVertexInputAttributeDescription),
   };
 
+  VkPushConstantRange push_constant = {
+    .stageFlags = VK_SHADER_STAGE_VERTEX_BIT,
+    .size = 8,
+  };
+
   VkPipelineLayoutCreateInfo layout_info = {
     .sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
     .setLayoutCount = 1,
     .pSetLayouts = &ui_descriptor_layout,
+    .pPushConstantRanges = &push_constant,
+    .pushConstantRangeCount = 1,
   };
 
   VkPipelineInputAssemblyStateCreateInfo input_assembly_info = {