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GPU: Bind and clear the render target when the CLEAR_BUFFERS register is written to.

This commit is contained in:
Subv 2018-06-06 23:54:25 -05:00
parent 827bb08c91
commit be51120d23
4 changed files with 86 additions and 0 deletions

View file

@ -126,6 +126,10 @@ void Maxwell3D::WriteReg(u32 method, u32 value, u32 remaining_params) {
DrawArrays();
break;
}
case MAXWELL3D_REG_INDEX(clear_buffers): {
ProcessClearBuffers();
break;
}
case MAXWELL3D_REG_INDEX(query.query_get): {
ProcessQueryGet();
break;
@ -415,5 +419,12 @@ bool Maxwell3D::IsShaderStageEnabled(Regs::ShaderStage stage) const {
UNREACHABLE();
}
void Maxwell3D::ProcessClearBuffers() {
ASSERT(regs.clear_buffers.R && regs.clear_buffers.G && regs.clear_buffers.B &&
regs.clear_buffers.A);
VideoCore::g_renderer->Rasterizer()->Clear();
}
} // namespace Engines
} // namespace Tegra

View file

@ -19,6 +19,9 @@ public:
/// Draw the current batch of vertex arrays
virtual void DrawArrays() = 0;
/// Clear the current framebuffer
virtual void Clear() = 0;
/// Notify rasterizer that the specified Maxwell register has been changed
virtual void NotifyMaxwellRegisterChanged(u32 method) = 0;

View file

@ -297,6 +297,77 @@ bool RasterizerOpenGL::AccelerateDrawBatch(bool is_indexed) {
return true;
}
void RasterizerOpenGL::Clear() {
const auto& regs = Core::System().GetInstance().GPU().Maxwell3D().regs;
// TODO(bunnei): Implement these
const bool has_stencil = false;
const bool using_color_fb = true;
const bool using_depth_fb = regs.zeta.Address() != 0;
const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[0].GetRect()};
const bool write_color_fb =
state.color_mask.red_enabled == GL_TRUE || state.color_mask.green_enabled == GL_TRUE ||
state.color_mask.blue_enabled == GL_TRUE || state.color_mask.alpha_enabled == GL_TRUE;
const bool write_depth_fb =
(state.depth.test_enabled && state.depth.write_mask == GL_TRUE) ||
(has_stencil && state.stencil.test_enabled && state.stencil.write_mask != 0);
Surface color_surface;
Surface depth_surface;
MathUtil::Rectangle<u32> surfaces_rect;
std::tie(color_surface, depth_surface, surfaces_rect) =
res_cache.GetFramebufferSurfaces(using_color_fb, using_depth_fb, viewport_rect);
MathUtil::Rectangle<u32> draw_rect{
static_cast<u32>(std::clamp<s32>(static_cast<s32>(surfaces_rect.left) + viewport_rect.left,
surfaces_rect.left, surfaces_rect.right)), // Left
static_cast<u32>(std::clamp<s32>(static_cast<s32>(surfaces_rect.bottom) + viewport_rect.top,
surfaces_rect.bottom, surfaces_rect.top)), // Top
static_cast<u32>(std::clamp<s32>(static_cast<s32>(surfaces_rect.left) + viewport_rect.right,
surfaces_rect.left, surfaces_rect.right)), // Right
static_cast<u32>(
std::clamp<s32>(static_cast<s32>(surfaces_rect.bottom) + viewport_rect.bottom,
surfaces_rect.bottom, surfaces_rect.top))}; // Bottom
// Bind the framebuffer surfaces
BindFramebufferSurfaces(color_surface, depth_surface, has_stencil);
// Sync the viewport
SyncViewport(surfaces_rect);
// TODO(bunnei): Sync scissorbox uniform(s) here
// Viewport can have negative offsets or larger dimensions than our framebuffer sub-rect. Enable
// scissor test to prevent drawing outside of the framebuffer region
state.scissor.enabled = true;
state.scissor.x = draw_rect.left;
state.scissor.y = draw_rect.bottom;
state.scissor.width = draw_rect.GetWidth();
state.scissor.height = draw_rect.GetHeight();
state.Apply();
// TODO(Subv): Support clearing only partial colors.
glClearColor(regs.clear_color[0], regs.clear_color[1], regs.clear_color[2],
regs.clear_color[3]);
glClearDepth(regs.clear_depth);
GLbitfield clear_mask = GL_COLOR_BUFFER_BIT;
if (regs.clear_buffers.Z)
clear_mask |= GL_DEPTH_BUFFER_BIT;
glClear(clear_mask);
// Mark framebuffer surfaces as dirty
if (color_surface != nullptr && write_color_fb) {
res_cache.MarkSurfaceAsDirty(color_surface);
}
if (depth_surface != nullptr && write_depth_fb) {
res_cache.MarkSurfaceAsDirty(depth_surface);
}
}
void RasterizerOpenGL::DrawArrays() {
if (accelerate_draw == AccelDraw::Disabled)
return;

View file

@ -28,6 +28,7 @@ public:
~RasterizerOpenGL() override;
void DrawArrays() override;
void Clear() override;
void NotifyMaxwellRegisterChanged(u32 method) override;
void FlushAll() override;
void FlushRegion(Tegra::GPUVAddr addr, u64 size) override;