dolphin/Source/Core/VideoBackends/OGL/VertexManager.cpp

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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <fstream>
#include <string>
#include <vector>
#include "Common/FileUtil.h"
#include "Common/MemoryUtil.h"
#include "Common/StringUtil.h"
#include "VideoBackends/OGL/main.h"
#include "VideoBackends/OGL/ProgramShaderCache.h"
#include "VideoBackends/OGL/Render.h"
#include "VideoBackends/OGL/StreamBuffer.h"
#include "VideoBackends/OGL/TextureCache.h"
#include "VideoBackends/OGL/VertexManager.h"
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/DriverDetails.h"
#include "VideoCommon/Fifo.h"
#include "VideoCommon/ImageWrite.h"
#include "VideoCommon/IndexGenerator.h"
#include "VideoCommon/PixelShaderManager.h"
#include "VideoCommon/Statistics.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexShaderGen.h"
#include "VideoCommon/VertexShaderManager.h"
#include "VideoCommon/VideoConfig.h"
namespace OGL
{
//This are the initially requested size for the buffers expressed in bytes
const u32 MAX_IBUFFER_SIZE = 2*1024*1024;
const u32 MAX_VBUFFER_SIZE = 32*1024*1024;
static StreamBuffer *s_vertexBuffer;
static StreamBuffer *s_indexBuffer;
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static size_t s_baseVertex;
static size_t s_index_offset;
VertexManager::VertexManager()
: m_cpu_v_buffer(MAX_VBUFFER_SIZE), m_cpu_i_buffer(MAX_IBUFFER_SIZE)
{
CreateDeviceObjects();
}
VertexManager::~VertexManager()
{
DestroyDeviceObjects();
}
void VertexManager::CreateDeviceObjects()
{
s_vertexBuffer = StreamBuffer::Create(GL_ARRAY_BUFFER, MAX_VBUFFER_SIZE);
m_vertex_buffers = s_vertexBuffer->m_buffer;
s_indexBuffer = StreamBuffer::Create(GL_ELEMENT_ARRAY_BUFFER, MAX_IBUFFER_SIZE);
m_index_buffers = s_indexBuffer->m_buffer;
m_last_vao = 0;
}
void VertexManager::DestroyDeviceObjects()
{
delete s_vertexBuffer;
delete s_indexBuffer;
}
void VertexManager::PrepareDrawBuffers(u32 stride)
{
u32 vertex_data_size = IndexGenerator::GetNumVerts() * stride;
u32 index_data_size = IndexGenerator::GetIndexLen() * sizeof(u16);
s_vertexBuffer->Unmap(vertex_data_size);
s_indexBuffer->Unmap(index_data_size);
ADDSTAT(stats.thisFrame.bytesVertexStreamed, vertex_data_size);
ADDSTAT(stats.thisFrame.bytesIndexStreamed, index_data_size);
}
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void VertexManager::ResetBuffer(u32 stride)
{
if (s_cull_all)
{
// This buffer isn't getting sent to the GPU. Just allocate it on the cpu.
s_pCurBufferPointer = s_pBaseBufferPointer = m_cpu_v_buffer.data();
s_pEndBufferPointer = s_pBaseBufferPointer + m_cpu_v_buffer.size();
IndexGenerator::Start((u16*)m_cpu_i_buffer.data());
}
else
{
auto buffer = s_vertexBuffer->Map(MAXVBUFFERSIZE, stride);
s_pCurBufferPointer = s_pBaseBufferPointer = buffer.first;
s_pEndBufferPointer = buffer.first + MAXVBUFFERSIZE;
s_baseVertex = buffer.second / stride;
buffer = s_indexBuffer->Map(MAXIBUFFERSIZE * sizeof(u16));
IndexGenerator::Start((u16*)buffer.first);
s_index_offset = buffer.second;
}
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}
void VertexManager::Draw(u32 stride)
{
u32 index_size = IndexGenerator::GetIndexLen();
u32 max_index = IndexGenerator::GetNumVerts();
GLenum primitive_mode = 0;
switch (current_primitive_type)
{
case PRIMITIVE_POINTS:
primitive_mode = GL_POINTS;
glDisable(GL_CULL_FACE);
break;
case PRIMITIVE_LINES:
primitive_mode = GL_LINES;
glDisable(GL_CULL_FACE);
break;
case PRIMITIVE_TRIANGLES:
primitive_mode = g_ActiveConfig.backend_info.bSupportsPrimitiveRestart ? GL_TRIANGLE_STRIP : GL_TRIANGLES;
break;
}
if (g_ogl_config.bSupportsGLBaseVertex)
{
glDrawRangeElementsBaseVertex(primitive_mode, 0, max_index, index_size, GL_UNSIGNED_SHORT, (u8*)nullptr+s_index_offset, (GLint)s_baseVertex);
}
else
{
glDrawRangeElements(primitive_mode, 0, max_index, index_size, GL_UNSIGNED_SHORT, (u8*)nullptr+s_index_offset);
}
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INCSTAT(stats.thisFrame.numDrawCalls);
if (current_primitive_type != PRIMITIVE_TRIANGLES)
((OGL::Renderer*)g_renderer)->SetGenerationMode();
}
void VertexManager::vFlush(bool useDstAlpha)
{
GLVertexFormat *nativeVertexFmt = (GLVertexFormat*)VertexLoaderManager::GetCurrentVertexFormat();
u32 stride = nativeVertexFmt->GetVertexStride();
if (m_last_vao != nativeVertexFmt->VAO)
{
glBindVertexArray(nativeVertexFmt->VAO);
m_last_vao = nativeVertexFmt->VAO;
}
PrepareDrawBuffers(stride);
// Makes sure we can actually do Dual source blending
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bool dualSourcePossible = g_ActiveConfig.backend_info.bSupportsDualSourceBlend;
// If host supports GL_ARB_blend_func_extended, we can do dst alpha in
// the same pass as regular rendering.
if (useDstAlpha && dualSourcePossible)
{
ProgramShaderCache::SetShader(DSTALPHA_DUAL_SOURCE_BLEND, nativeVertexFmt->m_components, current_primitive_type);
}
else
{
ProgramShaderCache::SetShader(DSTALPHA_NONE, nativeVertexFmt->m_components, current_primitive_type);
}
// upload global constants
ProgramShaderCache::UploadConstants();
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// setup the pointers
nativeVertexFmt->SetupVertexPointers();
Draw(stride);
// run through vertex groups again to set alpha
if (useDstAlpha && !dualSourcePossible)
{
ProgramShaderCache::SetShader(DSTALPHA_ALPHA_PASS, nativeVertexFmt->m_components, current_primitive_type);
// only update alpha
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_TRUE);
glDisable(GL_BLEND);
Draw(stride);
// restore color mask
g_renderer->SetColorMask();
if (bpmem.blendmode.blendenable || bpmem.blendmode.subtract)
glEnable(GL_BLEND);
}
#if defined(_DEBUG) || defined(DEBUGFAST)
if (g_ActiveConfig.iLog & CONF_SAVESHADERS)
{
// save the shaders
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ProgramShaderCache::PCacheEntry prog = ProgramShaderCache::GetShaderProgram();
std::string filename = StringFromFormat("%sps%.3d.txt", File::GetUserPath(D_DUMPFRAMES_IDX).c_str(), g_ActiveConfig.iSaveTargetId);
std::ofstream fps;
OpenFStream(fps, filename, std::ios_base::out);
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fps << prog.shader.strpprog.c_str();
filename = StringFromFormat("%svs%.3d.txt", File::GetUserPath(D_DUMPFRAMES_IDX).c_str(), g_ActiveConfig.iSaveTargetId);
std::ofstream fvs;
OpenFStream(fvs, filename, std::ios_base::out);
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fvs << prog.shader.strvprog.c_str();
}
if (g_ActiveConfig.iLog & CONF_SAVETARGETS)
{
std::string filename = StringFromFormat("%starg%.3d.png", File::GetUserPath(D_DUMPFRAMES_IDX).c_str(), g_ActiveConfig.iSaveTargetId);
TargetRectangle tr;
tr.left = 0;
tr.right = Renderer::GetTargetWidth();
tr.top = 0;
tr.bottom = Renderer::GetTargetHeight();
g_renderer->SaveScreenshot(filename, tr);
}
#endif
g_Config.iSaveTargetId++;
ClearEFBCache();
}
} // namespace