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GPU: Implement support for multisample antialiasing

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This commit is contained in:
Connor McLaughlin
2020-10-31 00:38:06 +10:00
parent 61a4960380
commit 2eaebd8921
28 changed files with 804 additions and 407 deletions
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117
src/core/gpu_hw_opengl.cpp
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@ -128,6 +128,9 @@ void GPU_HW_OpenGL::UpdateSettings()
if (framebuffer_changed)
{
RestoreGraphicsAPIState();
ReadVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT);
ResetGraphicsAPIState();
m_host_display->ClearDisplayTexture();
CreateFramebuffer();
}
@ -137,6 +140,7 @@ void GPU_HW_OpenGL::UpdateSettings()
if (framebuffer_changed)
{
RestoreGraphicsAPIState();
UpdateVRAM(0, 0, VRAM_WIDTH, VRAM_HEIGHT, m_vram_ptr);
UpdateDepthBufferFromMaskBit();
UpdateDisplay();
ResetGraphicsAPIState();
@ -179,6 +183,15 @@ void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
Log_InfoPrintf("Max texture size: %dx%d", max_texture_size, max_texture_size);
m_max_resolution_scale = static_cast<u32>(max_texture_size / VRAM_WIDTH);
m_max_multisamples = 1;
glGetIntegerv(GL_MAX_SAMPLES, reinterpret_cast<GLint*>(&m_max_multisamples));
if (m_max_multisamples == 0)
m_max_multisamples = 1;
m_supports_per_sample_shading = GLAD_GL_ARB_sample_shading;
Log_InfoPrintf("Per-sample shading: %s", m_supports_per_sample_shading ? "supported" : "not supported");
Log_InfoPrintf("Max multisamples: %u", m_max_multisamples);
glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, reinterpret_cast<GLint*>(&m_uniform_buffer_alignment));
Log_InfoPrintf("Uniform buffer offset alignment: %u", m_uniform_buffer_alignment);
@ -212,9 +225,16 @@ void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
Log_InfoPrintf("Max shader storage buffer size: %u", max_ssbo_size);
m_use_ssbo_for_vram_writes = (max_ssbo_size >= (VRAM_WIDTH * VRAM_HEIGHT * sizeof(u16)));
if (m_use_ssbo_for_vram_writes)
{
Log_InfoPrintf("Using shader storage buffers for VRAM writes.");
}
else
Log_WarningPrintf("Texture buffers are not supported, VRAM writes will be slower.");
{
Log_WarningPrintf(
"Texture buffers are not supported, VRAM writes will be slower and multisampling will be unavailable.");
m_max_multisamples = 1;
m_supports_per_sample_shading = false;
}
}
int max_dual_source_draw_buffers = 0;
@ -240,24 +260,23 @@ void GPU_HW_OpenGL::SetCapabilities(HostDisplay* host_display)
bool GPU_HW_OpenGL::CreateFramebuffer()
{
// save old vram texture/fbo, in case we're changing scale
GL::Texture old_vram_texture = std::move(m_vram_texture);
GLuint old_vram_fbo = m_vram_fbo_id;
// scale vram size to internal resolution
const u32 texture_width = VRAM_WIDTH * m_resolution_scale;
const u32 texture_height = VRAM_HEIGHT * m_resolution_scale;
const u32 multisamples = m_multisamples;
if (!m_vram_texture.Create(texture_width, texture_height, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr, false,
true) ||
!m_vram_depth_texture.Create(texture_width, texture_height, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT,
GL_UNSIGNED_SHORT, nullptr, false) ||
!m_vram_read_texture.Create(texture_width, texture_height, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr, false,
if (!m_vram_texture.Create(texture_width, texture_height, multisamples, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr,
false, true) ||
!m_vram_depth_texture.Create(texture_width, texture_height, multisamples, GL_DEPTH_COMPONENT16,
GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, nullptr, false) ||
!m_vram_read_texture.Create(texture_width, texture_height, 1, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr, false,
true) ||
!m_vram_read_texture.CreateFramebuffer() ||
!m_vram_encoding_texture.Create(VRAM_WIDTH, VRAM_HEIGHT, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr, false) ||
!m_vram_encoding_texture.Create(VRAM_WIDTH, VRAM_HEIGHT, 1, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr,
false) ||
!m_vram_encoding_texture.CreateFramebuffer() ||
!m_display_texture.Create(texture_width, texture_height, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr, false) ||
!m_display_texture.Create(texture_width, texture_height, 1, GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, nullptr,
false) ||
!m_display_texture.CreateFramebuffer())
{
return false;
@ -265,28 +284,12 @@ bool GPU_HW_OpenGL::CreateFramebuffer()
glGenFramebuffers(1, &m_vram_fbo_id);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_vram_fbo_id);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_vram_texture.GetGLId(), 0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, m_vram_depth_texture.GetGLId(), 0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, m_vram_texture.GetGLTarget(),
m_vram_texture.GetGLId(), 0);
glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, m_vram_depth_texture.GetGLTarget(),
m_vram_depth_texture.GetGLId(), 0);
Assert(glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
// do we need to restore the framebuffer after a size change?
if (old_vram_fbo != 0)
{
const bool linear_filter = old_vram_texture.GetWidth() > m_vram_texture.GetWidth();
Log_DevPrintf("Scaling %ux%u VRAM texture to %ux%u using %s filter", old_vram_texture.GetWidth(),
old_vram_texture.GetHeight(), m_vram_texture.GetWidth(), m_vram_texture.GetHeight(),
linear_filter ? "linear" : "nearest");
glDisable(GL_SCISSOR_TEST);
glBindFramebuffer(GL_READ_FRAMEBUFFER, old_vram_fbo);
glBlitFramebuffer(0, 0, old_vram_texture.GetWidth(), old_vram_texture.GetHeight(), 0, 0, m_vram_texture.GetWidth(),
m_vram_texture.GetHeight(), GL_COLOR_BUFFER_BIT, linear_filter ? GL_LINEAR : GL_NEAREST);
glEnable(GL_SCISSOR_TEST);
old_vram_texture.Destroy();
glDeleteFramebuffers(1, &old_vram_fbo);
}
SetFullVRAMDirtyRectangle();
return true;
}
@ -366,8 +369,9 @@ bool GPU_HW_OpenGL::CompilePrograms()
shader_cache.Open(IsGLES(), g_host_interface->GetShaderCacheBasePath());
const bool use_binding_layout = GPU_HW_ShaderGen::UseGLSLBindingLayout();
GPU_HW_ShaderGen shadergen(m_host_display->GetRenderAPI(), m_resolution_scale, m_true_color, m_scaled_dithering,
m_texture_filtering, m_using_uv_limits, m_supports_dual_source_blend);
GPU_HW_ShaderGen shadergen(m_host_display->GetRenderAPI(), m_resolution_scale, m_multisamples, m_per_sample_shading,
m_true_color, m_scaled_dithering, m_texture_filtering, m_using_uv_limits,
m_supports_dual_source_blend);
Common::Timer compile_time;
const int progress_total = (4 * 9 * 2 * 2) + (2 * 3) + 5;
@ -630,10 +634,22 @@ void GPU_HW_OpenGL::UpdateDisplay()
if (g_settings.debugging.show_vram)
{
m_host_display->SetDisplayTexture(reinterpret_cast<void*>(static_cast<uintptr_t>(m_vram_texture.GetGLId())),
m_vram_texture.GetWidth(), static_cast<s32>(m_vram_texture.GetHeight()), 0,
m_vram_texture.GetHeight(), m_vram_texture.GetWidth(),
-static_cast<s32>(m_vram_texture.GetHeight()));
if (IsUsingMultisampling())
{
UpdateVRAMReadTexture();
m_host_display->SetDisplayTexture(
reinterpret_cast<void*>(static_cast<uintptr_t>(m_vram_read_texture.GetGLId())), m_vram_read_texture.GetWidth(),
static_cast<s32>(m_vram_read_texture.GetHeight()), 0, m_vram_read_texture.GetHeight(),
m_vram_read_texture.GetWidth(), -static_cast<s32>(m_vram_read_texture.GetHeight()));
}
else
{
m_host_display->SetDisplayTexture(reinterpret_cast<void*>(static_cast<uintptr_t>(m_vram_texture.GetGLId())),
m_vram_texture.GetWidth(), static_cast<s32>(m_vram_texture.GetHeight()), 0,
m_vram_texture.GetHeight(), m_vram_texture.GetWidth(),
-static_cast<s32>(m_vram_texture.GetHeight()));
}
m_host_display->SetDisplayParameters(VRAM_WIDTH, VRAM_HEIGHT, 0, 0, VRAM_WIDTH, VRAM_HEIGHT,
static_cast<float>(VRAM_WIDTH) / static_cast<float>(VRAM_HEIGHT));
}
@ -654,7 +670,7 @@ void GPU_HW_OpenGL::UpdateDisplay()
m_host_display->ClearDisplayTexture();
}
else if (!m_GPUSTAT.display_area_color_depth_24 && interlaced == GPU_HW::InterlacedRenderMode::None &&
(scaled_vram_offset_x + scaled_display_width) <= m_vram_texture.GetWidth() &&
!IsUsingMultisampling() && (scaled_vram_offset_x + scaled_display_width) <= m_vram_texture.GetWidth() &&
(scaled_vram_offset_y + scaled_display_height) <= m_vram_texture.GetHeight())
{
m_host_display->SetDisplayTexture(reinterpret_cast<void*>(static_cast<uintptr_t>(m_vram_texture.GetGLId())),
@ -868,7 +884,7 @@ void GPU_HW_OpenGL::UpdateVRAM(u32 x, u32 y, u32 width, u32 height, const void*
const u32 flipped_y = VRAM_HEIGHT - y - height;
// update texture data
glTexSubImage2D(GL_TEXTURE_2D, 0, x, flipped_y, width, height, GL_RGBA, GL_UNSIGNED_BYTE,
glTexSubImage2D(m_vram_texture.GetGLTarget(), 0, x, flipped_y, width, height, GL_RGBA, GL_UNSIGNED_BYTE,
reinterpret_cast<void*>(static_cast<uintptr_t>(map_result.buffer_offset)));
m_texture_stream_buffer->Unbind();
@ -939,13 +955,13 @@ void GPU_HW_OpenGL::CopyVRAM(u32 src_x, u32 src_y, u32 dst_x, u32 dst_y, u32 wid
if (GLAD_GL_VERSION_4_3)
{
glCopyImageSubData(m_vram_texture.GetGLId(), GL_TEXTURE_2D, 0, src_x, src_y, 0, m_vram_texture.GetGLId(),
GL_TEXTURE_2D, 0, dst_x, dst_y, 0, width, height, 1);
glCopyImageSubData(m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, src_x, src_y, 0,
m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, dst_x, dst_y, 0, width, height, 1);
}
else if (GLAD_GL_EXT_copy_image)
{
glCopyImageSubDataEXT(m_vram_texture.GetGLId(), GL_TEXTURE_2D, 0, src_x, src_y, 0, m_vram_texture.GetGLId(),
GL_TEXTURE_2D, 0, dst_x, dst_y, 0, width, height, 1);
glCopyImageSubDataEXT(m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, src_x, src_y, 0,
m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, dst_x, dst_y, 0, width, height, 1);
}
else
{
@ -964,16 +980,17 @@ void GPU_HW_OpenGL::UpdateVRAMReadTexture()
const u32 height = scaled_rect.GetHeight();
const u32 x = scaled_rect.left;
const u32 y = m_vram_texture.GetHeight() - scaled_rect.top - height;
const bool multisampled = m_vram_texture.IsMultisampled();
if (GLAD_GL_VERSION_4_3)
if (!multisampled && 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);
glCopyImageSubData(m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, x, y, 0,
m_vram_read_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, x, y, 0, width, height, 1);
}
else if (GLAD_GL_EXT_copy_image)
else if (!multisampled && 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);
glCopyImageSubDataEXT(m_vram_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, x, y, 0,
m_vram_read_texture.GetGLId(), m_vram_texture.GetGLTarget(), 0, x, y, 0, width, height, 1);
}
else
{