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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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1
rendering_api/metal/src/core/commands/command_buffer/metal_command_buffer.h
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@@ -8,4 +8,5 @@ typedef struct gnPlatformCommandBuffer_t {
id<MTLCommandBuffer> commandBuffer;
id<MTLCommandEncoder> encoder;
struct gnGraphicsPipeline_t* boundGraphcisPipeline;
gnBufferHandle indexBuffer;
} gnPlatformCommandBuffer;

5
rendering_api/metal/src/core/commands/commands/metal_commands.m
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@@ -70,10 +70,11 @@ void gnCommandSetScissorFn(struct gnCommandBuffer_t* buffer, struct gnScissor_t
[encoder setScissorRect:scissorRect];
}
void gnCommandBindBufferFn(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type) {
if (type == GN_VERTEX_BUFFER) {
id<MTLRenderCommandEncoder> encoder = (id<MTLRenderCommandEncoder>)buffer->commandBuffer->encoder;
if (type == GN_VERTEX_BUFFER)
[encoder setVertexBuffer:bufferToBind->buffer->buffer offset:0 atIndex:0];
}
else if (type == GN_INDEX_BUFFER)
buffer->commandBuffer->indexBuffer = bufferToBind;
}
void gnCommandDrawFn(struct gnCommandBuffer_t* buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance) {
if (buffer->commandBuffer->boundGraphcisPipeline != NULL) {

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
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@@ -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;
}

7
src/core/buffers/gryphn_buffer.h
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@@ -3,8 +3,13 @@
#include "utils/gryphn_error_code.h"
#include <core/gryphn_handles.h>
typedef enum gnIndexType {
GN_UINT16, GN_UINT32
} gnIndexType;
typedef enum gnBufferType {
GN_VERTEX_BUFFER = 0x00000001
GN_VERTEX_BUFFER = 0x00000001f,
GN_INDEX_BUFFER = 0x00000002f,
} gnBufferType;
typedef enum gnBufferUsage {

3
src/core/command/commands/gryphn_command.c
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@@ -23,3 +23,6 @@ void gnCommandBindBuffer(gnCommandBufferHandle buffer, gnBufferHandle bufferToBi
void gnCommandDraw(struct gnCommandBuffer_t* buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance) {
buffer->commandPool->commandFunctions->_gnCommandDraw(buffer, vertexCount, firstVertex, instanceCount, firstInstance);
}
void gnCommandDrawIndexed(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance) {
buffer->commandPool->commandFunctions->_gnCommandDrawIndexed(buffer, type, indexCount, firstIndex, vertexOffset, instanceCount, firstInstance);
}

1
src/core/command/commands/gryphn_command.h
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@@ -13,3 +13,4 @@ void gnCommandSetScissor(gnCommandBufferHandle buffer, gnScissor scissor);
void gnCommandBindBuffer(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type);
void gnCommandDraw(gnCommandBufferHandle buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance);
void gnCommandDrawIndexed(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance);

1
src/core/gryphn_platform_functions.h
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@@ -113,4 +113,5 @@ typedef struct gnCommandFunctions_t {
void (*_gnCommandBindBuffer)(gnCommandBufferHandle buffer, gnBufferHandle bufferToBind, gnBufferType type);
void (*_gnCommandDraw)(gnCommandBufferHandle buffer, int vertexCount, int firstVertex, int instanceCount, int firstInstance);
void (*_gnCommandDrawIndexed)(gnCommandBufferHandle buffer, gnIndexType type, int indexCount, int firstIndex, int vertexOffset, int instanceCount, int firstInstance);
} gnCommandFunctions;

1
src/core/instance/init/gryphn_init.c
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@@ -109,4 +109,5 @@ void gnLoadCommandFunctions(struct gnDynamicLibrary_t* lib, struct gnCommandFunc
gnLoadDLLFunction(lib, functions->_gnCommandSetScissor, "gnCommandSetScissorFn");
gnLoadDLLFunction(lib, functions->_gnCommandBindBuffer, "gnCommandBindBufferFn");
gnLoadDLLFunction(lib, functions->_gnCommandDraw, "gnCommandDrawFn");
gnLoadDLLFunction(lib, functions->_gnCommandDrawIndexed, "gnCommandDrawIndexedFn");
}