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indexed drawing and index buffers

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This commit is contained in:
Greg Wells
2025-06-06 17:35:37 -04:00
parent 5dec8b9005
commit e66075beaf
10 changed files with 32 additions and 4 deletions
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2
rendering_api/vulkan/src/buffers/vulkan_buffer.c
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@@ -7,6 +7,7 @@
VkBufferUsageFlags vkGryphnBufferType(gnBufferType type) {
switch (type) {
case GN_VERTEX_BUFFER: return VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
case GN_INDEX_BUFFER: return VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
}
}
@@ -90,6 +91,7 @@ void VkCopyBuffer(VkBuffer source, VkBuffer destination, size_t size, VkCommandP
gnReturnCode gnCreateBufferFn(gnBufferHandle buffer, gnOutputDeviceHandle device, gnBufferInfo info) {
buffer->buffer = malloc(sizeof(struct gnPlatformBuffer_t));
VkBufferUsageFlags usage = vkGryphnBufferType(info.type);
buffer->buffer->useStagingBuffer = gnFalse;
if (info.usage == GN_STATIC_DRAW) {
gnReturnCode createdBuffer = VkCreateBuffer(
&buffer->buffer->stagingBuffer, &buffer->buffer->stagingBufferMemory,

4
rendering_api/vulkan/src/commands/command_buffer/vulkan_command_buffer.h
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@@ -1,7 +1,11 @@
#pragma once
#include "core/command/command_buffer/gryphn_command_buffer.h"
#include "utils/gryphn_bool.h"
#include <vulkan/vulkan.h>
typedef struct gnPlatformCommandBuffer_t {
VkCommandBuffer buffer;
gnBool changedBuffer;
gnBufferHandle boundIndexBuffer;
} gnPlatformCommandBuffer;

9
rendering_api/vulkan/src/commands/commands/vulkan_commands.c
View File

@@ -59,7 +59,16 @@ VkDeviceSize offsets[] = {0};
void gnCommandBindBufferFn(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type) {
if (type == GN_VERTEX_BUFFER)
vkCmdBindVertexBuffers(buffer->commandBuffer->buffer, 0, 1, &bufferToBind->buffer->buffer, offsets);
else if (type == GN_INDEX_BUFFER) {
buffer->commandBuffer->changedBuffer = gnTrue;
buffer->commandBuffer->boundIndexBuffer = bufferToBind;
}
}
void gnCommandDrawFn(struct gnCommandBuffer_t* buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance) {
vkCmdDraw(buffer->commandBuffer->buffer, vertexCount, instanceCount, firstVertex, firstInstance);
}
void gnCommandDrawIndexedFn(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance) {
if (buffer->commandBuffer->changedBuffer) vkCmdBindIndexBuffer(buffer->commandBuffer->buffer, buffer->commandBuffer->boundIndexBuffer->buffer->buffer, 0, (type == GN_UINT32) ? VK_INDEX_TYPE_UINT32 : VK_INDEX_TYPE_UINT16);
vkCmdDrawIndexed(buffer->commandBuffer->buffer, indexCount, instanceCount, firstIndex, vertexOffset, firstInstance);
buffer->commandBuffer->changedBuffer = gnFalse;
}