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GPU/HW: Fallback path via blit for GPUs without GL_EXT_copy_image

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This commit is contained in:
Connor McLaughlin 2019-11-05 23:05:57 +10:00
parent cc7483ad58
commit 089f297b9a
2 changed files with 27 additions and 6 deletions
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2
src/core/gpu_hw.cpp
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@ -243,7 +243,7 @@ void GPU_HW::DispatchRenderCommand(RenderCommand rc, u32 num_vertices, const u32
if (m_vram_dirty_rect.Valid() && (m_render_state.GetTexturePageRectangle().Intersects(m_vram_dirty_rect) ||
m_render_state.GetTexturePaletteRectangle().Intersects(m_vram_dirty_rect)))
{
Log_WarningPrintf("Invalidating VRAM read cache due to drawing area overlap");
Log_DevPrintf("Invalidating VRAM read cache due to drawing area overlap");
if (!IsFlushed())
FlushRender();

31
src/core/gpu_hw_opengl.cpp
View file

@ -124,6 +124,9 @@ void GPU_HW_OpenGL::SetCapabilities()
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, reinterpret_cast<GLint*>(&m_uniform_buffer_alignment));
Log_InfoPrintf("Uniform buffer offset alignment: %u", m_uniform_buffer_alignment);
if (!GLAD_GL_VERSION_4_3 && !GLAD_GL_EXT_copy_image)
Log_WarningPrintf("GL_EXT_copy_image missing, this may affect performance.");
}
void GPU_HW_OpenGL::CreateFramebuffer()
@ -675,13 +678,31 @@ void GPU_HW_OpenGL::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 wid
void GPU_HW_OpenGL::UpdateVRAMReadTexture()
{
// TODO: Fallback blit path.
const auto scaled_rect = m_vram_dirty_rect * m_resolution_scale;
const u32 flipped_y = m_vram_texture->GetHeight() - scaled_rect.top - scaled_rect.GetHeight();
const u32 width = scaled_rect.GetWidth();
const u32 height = scaled_rect.GetHeight();
const u32 x = scaled_rect.left;
const u32 y = m_vram_texture->GetHeight() - scaled_rect.top - height;
glCopyImageSubData(m_vram_texture->GetGLId(), GL_TEXTURE_2D, 0, scaled_rect.left, flipped_y, 0,
m_vram_read_texture->GetGLId(), GL_TEXTURE_2D, 0, scaled_rect.left, flipped_y, 0,
scaled_rect.GetWidth(), scaled_rect.GetHeight(), 1);
if (GLAD_GL_VERSION_4_3)
{
glCopyImageSubData(m_vram_texture->GetGLId(), GL_TEXTURE_2D, 0, x, y, 0, m_vram_read_texture->GetGLId(),
GL_TEXTURE_2D, 0, x, y, 0, width, height, 1);
}
else if (GLAD_GL_EXT_copy_image)
{
glCopyImageSubDataEXT(m_vram_texture->GetGLId(), GL_TEXTURE_2D, 0, x, y, 0, m_vram_read_texture->GetGLId(),
GL_TEXTURE_2D, 0, x, y, 0, width, height, 1);
}
else
{
m_vram_read_texture->BindFramebuffer(GL_DRAW_FRAMEBUFFER);
m_vram_texture->BindFramebuffer(GL_READ_FRAMEBUFFER);
glDisable(GL_SCISSOR_TEST);
glBlitFramebuffer(x, y, x + width, y + height, x, y, x + width, y + height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
glEnable(GL_SCISSOR_TEST);
m_vram_texture->BindFramebuffer(GL_FRAMEBUFFER);
}
m_renderer_stats.num_vram_read_texture_updates++;
ClearVRAMDirtyRectangle();