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Loading font metadata

main
noah metz 2024-10-14 14:16:59 -06:00
parent 683c071878
commit 5acc216bf1
4 changed files with 57 additions and 19 deletions
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8
client/include/pipeline.h
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@ -32,6 +32,8 @@ typedef struct FontUniformStruct {
uint32_t num_symbols;
uint32_t width;
uint32_t height;
uint32_t space_width;
VkDeviceAddress symbol_list;
} FontUniform;
typedef struct SymbolInfoStruct {
@ -42,9 +44,7 @@ typedef struct SymbolInfoStruct {
typedef struct FontDataStruct {
FontUniform info;
SymbolInfo* symbols;
uint32_t* codes;
uint32_t* data;
uint16_t* codes;
} FontData;
typedef struct FontDescriptorStruct {
@ -95,6 +95,6 @@ typedef struct UIContextStruct {
VkResult init_pipelines(VkDevice device, VmaAllocator allocator, VkExtent2D swapchain_extent, VkRenderPass render_pass, Queue transfer_queue, VkCommandPool transfer_pool, UIContext* context);
VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescriptorSetLayout layout, VkDescriptorPool pool, FontData* font, VkCommandPool transfer_pool, Queue transfer_queue, FontDescriptor* descriptor);
VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescriptorSetLayout layout, VkDescriptorPool pool, FontData* font, SymbolInfo* symbols, uint32_t* atlas, VkCommandPool transfer_pool, Queue transfer_queue, FontDescriptor* descriptor);
#endif

24
client/shader_src/ui_text.vert
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@ -1,14 +1,26 @@
#version 450
#extension GL_EXT_buffer_reference : require
struct Symbol {
uint x;
uint top;
uint width;
};
layout(buffer_reference, std430) readonly buffer SymbolList{
Symbol symbols[];
};
layout(set = 0, binding = 0) uniform UIUniform {
mat4 screen;
} ubo;
layout(set = 1, binding = 0) uniform FontUniform {
vec2 size;
uint cols;
uint rows;
uint start;
uint num_symbols;
uint width;
uint height;
uint space_width;
SymbolList symbol_list;
} font;
layout(location = 0) in vec2 inVertexPosition;
@ -21,9 +33,7 @@ layout(location = 0) out vec4 fragColor;
layout(location = 1) out vec2 fragUV;
void main() {
float row = floor(code/font.cols);
float col = code - row*font.cols;
fragUV = (vec2(col, row) + inVertexPosition) / vec2(font.cols, font.rows);
fragUV = inVertexPosition;
fragColor = inColor;
gl_Position = ubo.screen * vec4(vec3(inVertexPosition * inSize, 0.0) + inPosition, 1.0);
}

38
client/src/main.c
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@ -14,7 +14,7 @@ ColoredRect colored_rect(float width, float height, float r, float g, float b, f
return rect;
}
VkResult load_font(const char* atlas_file, const char* metadata_file, FontData* font) {
VkResult load_font(const char* atlas_file, const char* metadata_file, FontData* font, SymbolInfo** symbols, uint32_t** image) {
FILE* atlas = fopen(atlas_file, "rb");
if(atlas == NULL) {
return VK_ERROR_UNKNOWN;
@ -44,9 +44,9 @@ VkResult load_font(const char* atlas_file, const char* metadata_file, FontData*
return VK_ERROR_UNKNOWN;
}
font->data = malloc(out_size);
*image = malloc(out_size);
result = spng_decode_image(ctx, font->data, out_size, SPNG_FMT_RGBA8, 0);
result = spng_decode_image(ctx, *image, out_size, SPNG_FMT_RGBA8, 0);
if(result != SPNG_OK) {
return VK_ERROR_UNKNOWN;
}
@ -66,6 +66,32 @@ VkResult load_font(const char* atlas_file, const char* metadata_file, FontData*
if(atlas == NULL) {
return VK_ERROR_UNKNOWN;
}
uint16_t symbol_count;
uint8_t ascent, descent;
fread(&symbol_count, 2, 1, metadata);
fread(&ascent, 1, 1, metadata);
fread(&descent, 1, 1, metadata);
font->info.num_symbols = ntohs(symbol_count);
*symbols = malloc(sizeof(SymbolInfo)*symbol_count);
font->codes = malloc(sizeof(uint16_t)*symbol_count);
uint8_t width;
uint8_t top;
uint16_t code;
uint32_t x;
for(uint16_t i = 0; i < symbol_count; i++) {
fread(&code, 2, 1, metadata);
font->codes[i] = ntohs(code);
fread(&x, 4, 1, metadata);
(*symbols)[i].x = ntohl(x);
fread(&width, 1, 1, metadata);
(*symbols)[i].width = width;
fread(&top, 1, 1, metadata);
(*symbols)[i].top = top;
}
fclose(metadata);
return VK_SUCCESS;
@ -85,13 +111,15 @@ VkResult render_thread(GLFWwindow* window, RenderContext* render_context) {
}
FontData test_font = {};
result = load_font("tools/test.png", "tools/test.meta", &test_font);
uint32_t* test_atlas;
SymbolInfo* test_symbols;
result = load_font("tools/test.png", "tools/test.meta", &test_font, &test_symbols, &test_atlas);
if(result != VK_SUCCESS) {
return result;
}
FontDescriptor test_font_descriptor;
result = create_text_descriptor(render_context->device, render_context->allocator, ui_context.font_layout, ui_context.font_pool, &test_font, render_context->transfer_pool, render_context->transfer_queue, &test_font_descriptor);
result = create_text_descriptor(render_context->device, render_context->allocator, ui_context.font_layout, ui_context.font_pool, &test_font, test_symbols, test_atlas, render_context->transfer_pool, render_context->transfer_queue, &test_font_descriptor);
if(result != VK_SUCCESS) {
return result;
}

6
client/src/pipeline.c
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@ -442,7 +442,7 @@ VkResult create_text_descriptor_pool(VkDevice device, uint32_t max_sets, VkDescr
return VK_SUCCESS;
}
VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescriptorSetLayout layout, VkDescriptorPool pool, FontData* font, VkCommandPool transfer_pool, Queue transfer_queue, FontDescriptor* descriptor) {
VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescriptorSetLayout layout, VkDescriptorPool pool, FontData* font, SymbolInfo* symbols, uint32_t* atlas, VkCommandPool transfer_pool, Queue transfer_queue, FontDescriptor* descriptor) {
VkResult result;
VkDescriptorSetAllocateInfo set_allocate_info = {
.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO,
@ -474,7 +474,7 @@ VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescr
.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
.extent.depth = 1,
.extent.width = font->info.width,
.extent.height = font->info.width,
.extent.height = font->info.height,
.mipLevels = 1,
.arrayLayers = 1,
.format = VK_FORMAT_R8G8B8A8_SRGB,
@ -517,7 +517,7 @@ VkResult create_text_descriptor(VkDevice device, VmaAllocator allocator, VkDescr
return result;
}
memcpy(mapped_staging + image_size, &font->info, sizeof(FontUniform));
memcpy(mapped_staging, font->data, image_size);
memcpy(mapped_staging, atlas, image_size);
vmaUnmapMemory(allocator, staging_memory);
VkCommandBuffer command_buffer = command_begin_single(device, transfer_pool);