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GPU: Support replacing VRAM writes with new textures

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This commit is contained in:
Connor McLaughlin
2020-12-25 18:02:38 +10:00
parent a66f14b5c3
commit 8db961042a
15 changed files with 680 additions and 26 deletions
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48
src/core/gpu_hw_opengl.cpp
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@ -5,6 +5,7 @@
#include "gpu_hw_shadergen.h"
#include "host_display.h"
#include "system.h"
#include "texture_replacements.h"
Log_SetChannel(GPU_HW_OpenGL);
GPU_HW_OpenGL::GPU_HW_OpenGL() : GPU_HW() {}
@ -618,6 +619,37 @@ void GPU_HW_OpenGL::SetBlendMode()
}
}
bool GPU_HW_OpenGL::BlitVRAMReplacementTexture(const TextureReplacementTexture* tex, u32 dst_x, u32 dst_y, u32 width,
u32 height)
{
if (!m_vram_write_replacement_texture.IsValid())
{
if (!m_vram_write_replacement_texture.Create(tex->GetWidth(), tex->GetHeight(), 1, GL_RGBA, GL_RGBA,
GL_UNSIGNED_BYTE, tex->GetPixels()) ||
!m_vram_write_replacement_texture.CreateFramebuffer())
{
m_vram_write_replacement_texture.Destroy();
return false;
}
}
else
{
m_vram_write_replacement_texture.Replace(tex->GetWidth(), tex->GetHeight(), GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE,
tex->GetPixels());
}
glDisable(GL_SCISSOR_TEST);
m_vram_write_replacement_texture.BindFramebuffer(GL_READ_FRAMEBUFFER);
dst_y = m_vram_texture.GetHeight() - dst_y - height;
glBlitFramebuffer(0, tex->GetHeight(), tex->GetWidth(), 0, dst_x, dst_y, dst_x + width, dst_y + height,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
m_vram_read_texture.Bind();
glEnable(GL_SCISSOR_TEST);
return true;
}
void GPU_HW_OpenGL::SetDepthFunc()
{
SetDepthFunc(m_batch.use_depth_buffer ? GL_LEQUAL : (m_batch.check_mask_before_draw ? GL_GEQUAL : GL_ALWAYS));
@ -849,12 +881,22 @@ void GPU_HW_OpenGL::FillVRAM(u32 x, u32 y, u32 width, u32 height, u32 color)
void GPU_HW_OpenGL::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void* data, bool set_mask, bool check_mask)
{
const Common::Rectangle<u32> bounds = GetVRAMTransferBounds(x, y, width, height);
GPU_HW::UpdateVRAM(bounds.left, bounds.top, bounds.GetWidth(), bounds.GetHeight(), data, set_mask, check_mask);
if (!check_mask)
{
const TextureReplacementTexture* rtex = g_texture_replacements.GetVRAMWriteReplacement(width, height, data);
if (rtex && BlitVRAMReplacementTexture(rtex, x * m_resolution_scale, y * m_resolution_scale,
width * m_resolution_scale, height * m_resolution_scale))
{
return;
}
}
const u32 num_pixels = width * height;
if (num_pixels < m_max_texture_buffer_size || m_use_ssbo_for_vram_writes)
{
const Common::Rectangle<u32> bounds = GetVRAMTransferBounds(x, y, width, height);
GPU_HW::UpdateVRAM(bounds.left, bounds.top, bounds.GetWidth(), bounds.GetHeight(), data, set_mask, check_mask);
const auto map_result = m_texture_stream_buffer->Map(sizeof(u16), num_pixels * sizeof(u16));
std::memcpy(map_result.pointer, data, num_pixels * sizeof(u16));
m_texture_stream_buffer->Unmap(num_pixels * sizeof(u16));