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Merge pull request #245 from Subv/set_shader2 

GPU: Store shader constbuffer bindings in the GPU state.
This commit is contained in:
bunnei 2018-03-17 21:19:39 -04:00 committed by GitHub
parent 516ef4f19f ccb8da1512
commit 29981fa2eb
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 116 additions and 24 deletions
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73
src/video_core/engines/maxwell_3d.cpp
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@ -15,6 +15,7 @@ const std::unordered_map<u32, Maxwell3D::MethodInfo> Maxwell3D::method_handlers
Maxwell3D::Maxwell3D(MemoryManager& memory_manager) : memory_manager(memory_manager) {}
void Maxwell3D::CallMethod(u32 method, const std::vector<u32>& parameters) {
// TODO(Subv): Write an interpreter for the macros uploaded via registers 0x45 and 0x47
auto itr = method_handlers.find(method);
if (itr == method_handlers.end()) {
LOG_ERROR(HW_GPU, "Unhandled method call %08X", method);
@ -42,6 +43,26 @@ void Maxwell3D::WriteReg(u32 method, u32 value) {
ASSERT_MSG(regs.code_address.CodeAddress() == 0, "Unexpected CODE_ADDRESS register value.");
break;
}
case MAXWELL3D_REG_INDEX(cb_bind[0].raw_config): {
ProcessCBBind(Regs::ShaderStage::Vertex);
break;
}
case MAXWELL3D_REG_INDEX(cb_bind[1].raw_config): {
ProcessCBBind(Regs::ShaderStage::TesselationControl);
break;
}
case MAXWELL3D_REG_INDEX(cb_bind[2].raw_config): {
ProcessCBBind(Regs::ShaderStage::TesselationEval);
break;
}
case MAXWELL3D_REG_INDEX(cb_bind[3].raw_config): {
ProcessCBBind(Regs::ShaderStage::Geometry);
break;
}
case MAXWELL3D_REG_INDEX(cb_bind[4].raw_config): {
ProcessCBBind(Regs::ShaderStage::Fragment);
break;
}
case MAXWELL3D_REG_INDEX(draw.vertex_end_gl): {
DrawArrays();
break;
@ -83,22 +104,54 @@ void Maxwell3D::SetShader(const std::vector<u32>& parameters) {
/**
* Parameters description:
* [0] = Shader Program.
* [1] = Unknown.
* [1] = Unknown, presumably the shader id.
* [2] = Offset to the start of the shader, after the 0x30 bytes header.
* [3] = Shader Type.
* [4] = Shader End Address >> 8.
* [3] = Shader Stage.
* [4] = Const Buffer Address >> 8.
*/
auto shader_program = static_cast<Regs::ShaderProgram>(parameters[0]);
// TODO(Subv): This address is probably an offset from the CODE_ADDRESS register.
GPUVAddr begin_address = parameters[2];
auto shader_type = static_cast<Regs::ShaderType>(parameters[3]);
GPUVAddr end_address = parameters[4] << 8;
GPUVAddr address = parameters[2];
auto shader_stage = static_cast<Regs::ShaderStage>(parameters[3]);
GPUVAddr cb_address = parameters[4] << 8;
auto& shader = state.shaders[static_cast<size_t>(shader_program)];
auto& shader = state.shader_programs[static_cast<size_t>(shader_program)];
shader.program = shader_program;
shader.type = shader_type;
shader.begin_address = begin_address;
shader.end_address = end_address;
shader.stage = shader_stage;
shader.address = address;
// Perform the same operations as the real macro code.
// TODO(Subv): Early exit if register 0xD1C + shader_program contains the same as params[1].
auto& shader_regs = regs.shader_config[static_cast<size_t>(shader_program)];
shader_regs.start_id = address;
// TODO(Subv): Write params[1] to register 0xD1C + shader_program.
// TODO(Subv): Write params[2] to register 0xD22 + shader_program.
// Note: This value is hardcoded in the macro's code.
static constexpr u32 DefaultCBSize = 0x10000;
regs.const_buffer.cb_size = DefaultCBSize;
regs.const_buffer.cb_address_high = cb_address >> 32;
regs.const_buffer.cb_address_low = cb_address & 0xFFFFFFFF;
// Write a hardcoded 0x11 to CB_BIND, this binds the current const buffer to buffer c1[] in the
// shader. It's likely that these are the constants for the shader.
regs.cb_bind[static_cast<size_t>(shader_stage)].valid.Assign(1);
regs.cb_bind[static_cast<size_t>(shader_stage)].index.Assign(1);
ProcessCBBind(shader_stage);
}
void Maxwell3D::ProcessCBBind(Regs::ShaderStage stage) {
// Bind the buffer currently in CB_ADDRESS to the specified index in the desired shader stage.
auto& shader = state.shader_stages[static_cast<size_t>(stage)];
auto& bind_data = regs.cb_bind[static_cast<size_t>(stage)];
auto& buffer = shader.const_buffers[bind_data.index];
buffer.enabled = bind_data.valid.Value() != 0;
buffer.index = bind_data.index;
buffer.address = regs.const_buffer.BufferAddress();
buffer.size = regs.const_buffer.cb_size;
}
} // namespace Engines

67
src/video_core/engines/maxwell_3d.h
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@ -35,8 +35,12 @@ public:
struct Regs {
static constexpr size_t NUM_REGS = 0xE36;
static constexpr size_t NumCBData = 16;
static constexpr size_t NumVertexArrays = 32;
static constexpr size_t MaxShaderProgram = 6;
static constexpr size_t MaxShaderStage = 5;
// Maximum number of const buffers per shader stage.
static constexpr size_t MaxConstBuffers = 16;
enum class QueryMode : u32 {
Write = 0,
@ -52,7 +56,7 @@ public:
Fragment = 5,
};
enum class ShaderType : u32 {
enum class ShaderStage : u32 {
Vertex = 0,
TesselationControl = 1,
TesselationEval = 2,
@ -132,17 +136,37 @@ public:
u32 start_id;
INSERT_PADDING_WORDS(1);
u32 gpr_alloc;
ShaderType type;
ShaderStage type;
INSERT_PADDING_WORDS(9);
} shader_config[MaxShaderProgram];
INSERT_PADDING_WORDS(0x5D0);
INSERT_PADDING_WORDS(0x8C);
struct {
u32 shader_code_call;
u32 shader_code_args;
} shader_code;
u32 cb_size;
u32 cb_address_high;
u32 cb_address_low;
u32 cb_pos;
u32 cb_data[NumCBData];
GPUVAddr BufferAddress() const {
return static_cast<GPUVAddr>(
(static_cast<GPUVAddr>(cb_address_high) << 32) | cb_address_low);
}
} const_buffer;
INSERT_PADDING_WORDS(0x10);
struct {
union {
u32 raw_config;
BitField<0, 1, u32> valid;
BitField<4, 5, u32> index;
};
INSERT_PADDING_WORDS(7);
} cb_bind[MaxShaderStage];
INSERT_PADDING_WORDS(0x50A);
};
std::array<u32, NUM_REGS> reg_array;
};
@ -151,17 +175,28 @@ public:
static_assert(sizeof(Regs) == Regs::NUM_REGS * sizeof(u32), "Maxwell3D Regs has wrong size");
struct State {
struct ShaderInfo {
Regs::ShaderType type;
Regs::ShaderProgram program;
GPUVAddr begin_address;
GPUVAddr end_address;
struct ConstBufferInfo {
GPUVAddr address;
u32 index;
u32 size;
bool enabled;
};
std::array<ShaderInfo, Regs::MaxShaderProgram> shaders;
struct ShaderProgramInfo {
Regs::ShaderStage stage;
Regs::ShaderProgram program;
GPUVAddr address;
};
struct ShaderStageInfo {
std::array<ConstBufferInfo, Regs::MaxConstBuffers> const_buffers;
};
std::array<ShaderStageInfo, Regs::MaxShaderStage> shader_stages;
std::array<ShaderProgramInfo, Regs::MaxShaderProgram> shader_programs;
};
State state;
State state{};
private:
MemoryManager& memory_manager;
@ -169,6 +204,9 @@ private:
/// Handles a write to the QUERY_GET register.
void ProcessQueryGet();
/// Handles a write to the CB_BIND register.
void ProcessCBBind(Regs::ShaderStage stage);
/// Handles a write to the VERTEX_END_GL register, triggering a draw.
void DrawArrays();
@ -194,7 +232,8 @@ ASSERT_REG_POSITION(query, 0x6C0);
ASSERT_REG_POSITION(vertex_array[0], 0x700);
ASSERT_REG_POSITION(vertex_array_limit[0], 0x7C0);
ASSERT_REG_POSITION(shader_config[0], 0x800);
ASSERT_REG_POSITION(shader_code, 0xE24);
ASSERT_REG_POSITION(const_buffer, 0x8E0);
ASSERT_REG_POSITION(cb_bind[0], 0x904);
#undef ASSERT_REG_POSITION