feedc0de/dolphin
1
0
Fork 0
forked from dolphin-emu/dolphin
Code Pull Requests Activity

OGL: implement bounding box support with ssbo

Browse Source 
This implemention tries to be as accurate as the old SW implemention, but it will remove the dependcy of our vertexloader on videosw.
This commit is contained in:
degasus
2014-11-13 23:26:49 +01:00
parent dced84d440
commit c211450b99
24 changed files with 231 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Source/Core/VideoBackends/OGL/BoundingBox.cpp
+54
View File
@@ -0,0 +1,54 @@
// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoBackends/OGL/BoundingBox.h"
#include "VideoBackends/OGL/GLUtil.h"
#include "VideoCommon/VideoConfig.h"
static GLuint s_bbox_buffer_id;
namespace OGL
{
void BoundingBox::Init()
{
if (g_ActiveConfig.backend_info.bSupportsBBox)
{
int initial_values[4] = {0,0,0,0};
glGenBuffers(1, &s_bbox_buffer_id);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, s_bbox_buffer_id);
glBufferData(GL_SHADER_STORAGE_BUFFER, 4 * sizeof(s32), initial_values, GL_DYNAMIC_DRAW);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, s_bbox_buffer_id);
}
}
void BoundingBox::Shutdown()
{
if (g_ActiveConfig.backend_info.bSupportsBBox)
glDeleteBuffers(1, &s_bbox_buffer_id);
}
void BoundingBox::Set(int index, int value)
{
glBindBuffer(GL_SHADER_STORAGE_BUFFER, s_bbox_buffer_id);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, index * sizeof(int), sizeof(int), &value);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
}
int BoundingBox::Get(int index)
{
int data = 0;
glBindBuffer(GL_SHADER_STORAGE_BUFFER, s_bbox_buffer_id);
void* ptr = glMapBufferRange(GL_SHADER_STORAGE_BUFFER, index * sizeof(int), sizeof(int), GL_MAP_READ_BIT);
if (ptr)
{
data = *(int*)ptr;
glUnmapBuffer(GL_SHADER_STORAGE_BUFFER);
}
glBindBuffer(GL_SHADER_STORAGE_BUFFER, 0);
return data;
}
};