forked from dolphin-emu/dolphin
256 lines
7.1 KiB
C++
256 lines
7.1 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "Globals.h"
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#include "GLUtil.h"
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#include "StreamBuffer.h"
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#include "MemoryUtil.h"
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#include "Render.h"
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#include "DriverDetails.h"
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#include "OnScreenDisplay.h"
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namespace OGL
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{
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static const u32 SYNC_POINTS = 16;
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static const u32 ALIGN_PINNED_MEMORY = 4096;
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StreamBuffer::StreamBuffer(u32 type, size_t size, StreamType uploadType)
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: m_uploadtype(uploadType), m_buffertype(type), m_size(size)
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{
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glGenBuffers(1, &m_buffer);
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bool nvidia = !strcmp(g_ogl_config.gl_vendor, "NVIDIA Corporation");
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if(m_uploadtype & STREAM_DETECT)
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{
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// TODO: move this to InitBackendInfo
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if(g_ActiveConfig.bHackedBufferUpload && DriverDetails::HasBug(DriverDetails::BUG_BROKENHACKEDBUFFER))
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{
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OSD::AddMessage("Vertex Streaming Hack isn't supported by your GPU.", 10000);
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g_ActiveConfig.bHackedBufferUpload = false;
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g_Config.bHackedBufferUpload = false;
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}
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if(!g_ogl_config.bSupportsGLBaseVertex && (m_uploadtype & BUFFERDATA)
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&& !DriverDetails::HasBug(DriverDetails::BUG_ISPOWERVR)
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&& !DriverDetails::HasBug(DriverDetails::BUG_ISTEGRA))
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m_uploadtype = BUFFERDATA;
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else if(!g_ogl_config.bSupportsGLBaseVertex && (m_uploadtype & BUFFERSUBDATA))
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m_uploadtype = BUFFERSUBDATA;
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else if(g_ogl_config.bSupportsGLSync && g_ActiveConfig.bHackedBufferUpload && (m_uploadtype & MAP_AND_RISK))
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m_uploadtype = MAP_AND_RISK;
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else if(g_ogl_config.bSupportsGLSync && g_ogl_config.bSupportsGLPinnedMemory && (!DriverDetails::HasBug(DriverDetails::BUG_BROKENPINNEDMEMORY) || type != GL_ELEMENT_ARRAY_BUFFER) && (m_uploadtype & PINNED_MEMORY))
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m_uploadtype = PINNED_MEMORY;
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else if(nvidia && (m_uploadtype & BUFFERSUBDATA))
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m_uploadtype = BUFFERSUBDATA;
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else if(g_ogl_config.bSupportsGLSync && (m_uploadtype & MAP_AND_SYNC))
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m_uploadtype = MAP_AND_SYNC;
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else
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m_uploadtype = MAP_AND_ORPHAN;
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}
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Init();
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}
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StreamBuffer::~StreamBuffer()
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{
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Shutdown();
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glDeleteBuffers(1, &m_buffer);
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}
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#define SLOT(x) (x)*SYNC_POINTS/m_size
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void StreamBuffer::Alloc ( size_t size, u32 stride )
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{
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size_t m_iterator_aligned = m_iterator;
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if(m_iterator_aligned && stride) {
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m_iterator_aligned--;
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m_iterator_aligned = m_iterator_aligned - (m_iterator_aligned % stride) + stride;
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}
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size_t iter_end = m_iterator_aligned + size;
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switch(m_uploadtype) {
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case MAP_AND_ORPHAN:
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if(iter_end >= m_size) {
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glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
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m_iterator_aligned = 0;
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}
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break;
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case MAP_AND_SYNC:
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case PINNED_MEMORY:
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// insert waiting slots for used memory
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for(u32 i=SLOT(m_used_iterator); i<SLOT(m_iterator); i++)
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{
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fences[i] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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}
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m_used_iterator = m_iterator;
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// wait for new slots to end of buffer
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for(u32 i=SLOT(m_free_iterator)+1; i<=SLOT(iter_end) && i < SYNC_POINTS; i++)
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{
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glClientWaitSync(fences[i], GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
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glDeleteSync(fences[i]);
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}
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m_free_iterator = iter_end;
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// if buffer is full
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if(iter_end >= m_size) {
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// insert waiting slots in unused space at the end of the buffer
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for(u32 i=SLOT(m_used_iterator); i < SYNC_POINTS; i++)
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fences[i] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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// move to the start
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m_used_iterator = m_iterator_aligned = m_iterator = 0; // offset 0 is always aligned
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iter_end = size;
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// wait for space at the start
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for(u32 i=0; i<=SLOT(iter_end); i++)
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{
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glClientWaitSync(fences[i], GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
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glDeleteSync(fences[i]);
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}
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m_free_iterator = iter_end;
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}
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break;
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case MAP_AND_RISK:
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if(iter_end >= m_size) {
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m_iterator_aligned = 0;
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}
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break;
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case BUFFERSUBDATA:
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case BUFFERDATA:
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m_iterator_aligned = 0;
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break;
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case STREAM_DETECT:
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case DETECT_MASK: // Just to shutup warnings
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break;
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}
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m_iterator = m_iterator_aligned;
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}
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size_t StreamBuffer::Upload ( u8* data, size_t size )
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{
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switch(m_uploadtype) {
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case MAP_AND_SYNC:
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case MAP_AND_ORPHAN:
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pointer = (u8*)glMapBufferRange(m_buffertype, m_iterator, size, GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT);
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if(pointer) {
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memcpy(pointer, data, size);
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glUnmapBuffer(m_buffertype);
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} else {
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ERROR_LOG(VIDEO, "Buffer mapping failed");
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}
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break;
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case PINNED_MEMORY:
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case MAP_AND_RISK:
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if(pointer)
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memcpy(pointer+m_iterator, data, size);
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break;
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case BUFFERSUBDATA:
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glBufferSubData(m_buffertype, m_iterator, size, data);
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break;
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case BUFFERDATA:
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glBufferData(m_buffertype, size, data, GL_STREAM_DRAW);
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break;
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case STREAM_DETECT:
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case DETECT_MASK: // Just to shutup warnings
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break;
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}
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size_t ret = m_iterator;
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m_iterator += size;
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return ret;
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}
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void StreamBuffer::Init()
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{
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m_iterator = 0;
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m_used_iterator = 0;
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m_free_iterator = 0;
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switch(m_uploadtype) {
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case MAP_AND_SYNC:
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fences = new GLsync[SYNC_POINTS];
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for(u32 i=0; i<SYNC_POINTS; i++)
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fences[i] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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case MAP_AND_ORPHAN:
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case BUFFERSUBDATA:
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glBindBuffer(m_buffertype, m_buffer);
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glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
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break;
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case PINNED_MEMORY:
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glGetError(); // errors before this allocation should be ignored
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fences = new GLsync[SYNC_POINTS];
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for(u32 i=0; i<SYNC_POINTS; i++)
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fences[i] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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pointer = (u8*)AllocateAlignedMemory(ROUND_UP(m_size,ALIGN_PINNED_MEMORY), ALIGN_PINNED_MEMORY );
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glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, m_buffer);
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glBufferData(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, ROUND_UP(m_size,ALIGN_PINNED_MEMORY), pointer, GL_STREAM_COPY);
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glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, 0);
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glBindBuffer(m_buffertype, m_buffer);
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// on error, switch to another backend. some old catalyst seems to have broken pinned memory support
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if(glGetError() != GL_NO_ERROR) {
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ERROR_LOG(VIDEO, "Pinned memory detected, but not working. Please report this: %s, %s, %s", g_ogl_config.gl_vendor, g_ogl_config.gl_renderer, g_ogl_config.gl_version);
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Shutdown();
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m_uploadtype = MAP_AND_SYNC;
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Init();
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}
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break;
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case MAP_AND_RISK:
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glBindBuffer(m_buffertype, m_buffer);
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glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
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pointer = (u8*)glMapBufferRange(m_buffertype, 0, m_size, GL_MAP_WRITE_BIT);
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glUnmapBuffer(m_buffertype);
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if(!pointer)
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ERROR_LOG(VIDEO, "Buffer allocation failed");
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break;
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case BUFFERDATA:
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glBindBuffer(m_buffertype, m_buffer);
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break;
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case STREAM_DETECT:
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case DETECT_MASK: // Just to shutup warnings
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break;
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}
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}
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void StreamBuffer::Shutdown()
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{
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switch(m_uploadtype) {
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case MAP_AND_SYNC:
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DeleteFences();
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break;
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case MAP_AND_RISK:
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case MAP_AND_ORPHAN:
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case BUFFERSUBDATA:
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case BUFFERDATA:
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break;
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case PINNED_MEMORY:
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DeleteFences();
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glBindBuffer(m_buffertype, 0);
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glFinish(); // ogl pipeline must be flushed, else this buffer can be in use
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FreeAlignedMemory(pointer);
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break;
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case STREAM_DETECT:
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case DETECT_MASK: // Just to shutup warnings
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break;
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}
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}
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void StreamBuffer::DeleteFences()
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{
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for(u32 i=SLOT(m_free_iterator)+1; i < SYNC_POINTS; i++)
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glDeleteSync(fences[i]);
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for(u32 i=0; i<SLOT(m_iterator); i++)
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glDeleteSync(fences[i]);
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delete [] fences;
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}
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}
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