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OpenGL buffers

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This commit is contained in:
Gregory Wells
2025-08-12 23:51:04 -04:00
parent 362efd8920
commit 5b43e3d5be
3 changed files with 55 additions and 5 deletions
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12
projects/apis/opengl/loader/opengl_device_loader.c
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@@ -5,6 +5,7 @@
#include "renderpass/opengl_render_pass_descriptor.h" #include "renderpass/opengl_render_pass_descriptor.h"
#include "uniforms/pool/opengl_uniform_pool.h" #include "uniforms/pool/opengl_uniform_pool.h"
#include "commands/pool/opengl_command_pool.h" #include "commands/pool/opengl_command_pool.h"
#include "buffer/opengl_buffer.h"
gnDeviceFunctions loadOpenGLDeviceFunctions() { gnDeviceFunctions loadOpenGLDeviceFunctions() {
return (gnDeviceFunctions){ return (gnDeviceFunctions){
@@ -27,11 +28,12 @@ gnDeviceFunctions loadOpenGLDeviceFunctions() {
._gnCreateCommandPool = openglCreateCommandPool, ._gnCreateCommandPool = openglCreateCommandPool,
._gnDestroyCommandPool = openglDestroyCommandPool, ._gnDestroyCommandPool = openglDestroyCommandPool,
._gnCreateBuffer = NULL, ._gnCreateBuffer = openglCreateBuffer,
._gnBufferData = NULL, ._gnBufferData = openglBufferData,
._gnBufferSubData = NULL, ._gnBufferSubData = openglBufferSubData,
._gnMapBuffer = NULL, ._gnMapBuffer = openglMapBuffer,
._gnDestroyBuffer = NULL, ._gnUnmapBuffer = openglUnmapBuffer,
._gnDestroyBuffer = openglDestroyBuffer,
._gnCreateUniformPool = openglCreateUniformPool, ._gnCreateUniformPool = openglCreateUniformPool,
._gnUniformPoolAllocateUniforms = openglAllocateUniforms, ._gnUniformPoolAllocateUniforms = openglAllocateUniforms,

33
projects/apis/opengl/src/buffer/opengl_buffer.c Normal file
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@@ -0,0 +1,33 @@
#include "opengl_buffer.h"
GLenum gnBufferTypeToGLEnum(gnBufferType type) {
switch (type) {
case GN_VERTEX_BUFFER: return GL_ARRAY_BUFFER;
case GN_INDEX_BUFFER: return GL_ELEMENT_ARRAY_BUFFER;
case GN_UNIFORM_BUFFER: return GL_UNIFORM_BUFFER;
case GN_STORAGE_BUFFER: return GL_SHADER_STORAGE_BUFFER;
}
}
gnReturnCode openglCreateBuffer(gnBufferHandle buffer, gnDevice device, gnBufferInfo info) {
buffer->buffer = malloc(sizeof(gnPlatformBuffer));
glCreateBuffers(1, &buffer->buffer->id);
buffer->buffer->type = gnBufferTypeToGLEnum(info.type);
buffer->buffer->usage = (info.usage == GN_DYNAMIC_DRAW) ? GL_DYNAMIC_DRAW : GL_STATIC_DRAW;
return GN_SUCCESS;
}
void openglBufferData(gnBufferHandle buffer, size_t dataSize, void* data) {
glNamedBufferData(buffer->buffer->id, dataSize, data, buffer->buffer->usage);
}
void openglBufferSubData(gnBufferHandle buffer, size_t offset, size_t dataSize, gnBufferMemory data) {
glNamedBufferSubData(buffer->buffer->id, offset, dataSize, data);
}
void* openglMapBuffer(gnBufferHandle buffer) {
return glMapNamedBuffer(buffer->buffer->id, GL_READ_WRITE);
}
void openglUnmapBuffer(gnBufferHandle buffer) {
glUnmapNamedBuffer(buffer->buffer->id);
}
void openglDestroyBuffer(gnBufferHandle buffer) {
glDeleteBuffers(1, &buffer->buffer->id);
}

15
projects/apis/opengl/src/buffer/opengl_buffer.h Normal file
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@@ -0,0 +1,15 @@
#pragma once
#include "core/src/buffers/gryphn_buffer.h"
#include "glad/glad.h"
typedef struct gnPlatformBuffer_t {
GLuint id;
GLenum type, usage;
} gnPlatformBuffer;
gnReturnCode openglCreateBuffer(gnBufferHandle buffer, gnDevice device, gnBufferInfo info);
void openglBufferData(gnBufferHandle buffer, size_t dataSize, void* data);
void openglBufferSubData(gnBufferHandle buffer, size_t offset, size_t dataSize, gnBufferMemory data);
void* openglMapBuffer(gnBufferHandle buffer);
void openglUnmapBuffer(gnBufferHandle buffer);
void openglDestroyBuffer(gnBufferHandle buffer);