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authorbunnei <bunneidev@gmail.com>2015-07-22 01:04:05 +0200
committerbunnei <bunneidev@gmail.com>2015-08-15 23:33:41 +0200
commit642b9b503040f7da02dcb2c52f3cd4cbf6fee4b2 (patch)
tree85643112608a15fafc304d41c4457a50c453bfcd /src/video_core/vertex_shader.cpp
parentMerge pull request #1027 from lioncash/debugger (diff)
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Diffstat (limited to 'src/video_core/vertex_shader.cpp')
-rw-r--r--src/video_core/vertex_shader.cpp629
1 files changed, 0 insertions, 629 deletions
diff --git a/src/video_core/vertex_shader.cpp b/src/video_core/vertex_shader.cpp
deleted file mode 100644
index 5f66f3455..000000000
--- a/src/video_core/vertex_shader.cpp
+++ /dev/null
@@ -1,629 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <boost/container/static_vector.hpp>
-#include <boost/range/algorithm.hpp>
-
-#include <common/file_util.h>
-
-#include <nihstro/shader_bytecode.h>
-
-#include "common/profiler.h"
-
-#include "pica.h"
-#include "vertex_shader.h"
-#include "debug_utils/debug_utils.h"
-
-using nihstro::OpCode;
-using nihstro::Instruction;
-using nihstro::RegisterType;
-using nihstro::SourceRegister;
-using nihstro::SwizzlePattern;
-
-namespace Pica {
-
-namespace VertexShader {
-
-struct VertexShaderState {
- u32 program_counter;
-
- const float24* input_register_table[16];
- Math::Vec4<float24> output_registers[16];
-
- Math::Vec4<float24> temporary_registers[16];
- bool conditional_code[2];
-
- // Two Address registers and one loop counter
- // TODO: How many bits do these actually have?
- s32 address_registers[3];
-
- enum {
- INVALID_ADDRESS = 0xFFFFFFFF
- };
-
- struct CallStackElement {
- u32 final_address; // Address upon which we jump to return_address
- u32 return_address; // Where to jump when leaving scope
- u8 repeat_counter; // How often to repeat until this call stack element is removed
- u8 loop_increment; // Which value to add to the loop counter after an iteration
- // TODO: Should this be a signed value? Does it even matter?
- u32 loop_address; // The address where we'll return to after each loop iteration
- };
-
- // TODO: Is there a maximal size for this?
- boost::container::static_vector<CallStackElement, 16> call_stack;
-
- struct {
- u32 max_offset; // maximum program counter ever reached
- u32 max_opdesc_id; // maximum swizzle pattern index ever used
- } debug;
-};
-
-static void ProcessShaderCode(VertexShaderState& state) {
- const auto& uniforms = g_state.vs.uniforms;
- const auto& swizzle_data = g_state.vs.swizzle_data;
- const auto& program_code = g_state.vs.program_code;
-
- // Placeholder for invalid inputs
- static float24 dummy_vec4_float24[4];
-
- while (true) {
- if (!state.call_stack.empty()) {
- auto& top = state.call_stack.back();
- if (state.program_counter == top.final_address) {
- state.address_registers[2] += top.loop_increment;
-
- if (top.repeat_counter-- == 0) {
- state.program_counter = top.return_address;
- state.call_stack.pop_back();
- } else {
- state.program_counter = top.loop_address;
- }
-
- // TODO: Is "trying again" accurate to hardware?
- continue;
- }
- }
-
- bool exit_loop = false;
- const Instruction instr = { program_code[state.program_counter] };
- const SwizzlePattern swizzle = { swizzle_data[instr.common.operand_desc_id] };
-
- static auto call = [](VertexShaderState& state, u32 offset, u32 num_instructions,
- u32 return_offset, u8 repeat_count, u8 loop_increment) {
- state.program_counter = offset - 1; // -1 to make sure when incrementing the PC we end up at the correct offset
- ASSERT(state.call_stack.size() < state.call_stack.capacity());
- state.call_stack.push_back({ offset + num_instructions, return_offset, repeat_count, loop_increment, offset });
- };
- state.debug.max_offset = std::max<u32>(state.debug.max_offset, 1 + state.program_counter);
-
- auto LookupSourceRegister = [&](const SourceRegister& source_reg) -> const float24* {
- switch (source_reg.GetRegisterType()) {
- case RegisterType::Input:
- return state.input_register_table[source_reg.GetIndex()];
-
- case RegisterType::Temporary:
- return &state.temporary_registers[source_reg.GetIndex()].x;
-
- case RegisterType::FloatUniform:
- return &uniforms.f[source_reg.GetIndex()].x;
-
- default:
- return dummy_vec4_float24;
- }
- };
-
- switch (instr.opcode.Value().GetInfo().type) {
- case OpCode::Type::Arithmetic:
- {
- const bool is_inverted = (0 != (instr.opcode.Value().GetInfo().subtype & OpCode::Info::SrcInversed));
-
- const int address_offset = (instr.common.address_register_index == 0)
- ? 0 : state.address_registers[instr.common.address_register_index - 1];
-
- const float24* src1_ = LookupSourceRegister(instr.common.GetSrc1(is_inverted) + (!is_inverted * address_offset));
- const float24* src2_ = LookupSourceRegister(instr.common.GetSrc2(is_inverted) + ( is_inverted * address_offset));
-
- const bool negate_src1 = ((bool)swizzle.negate_src1 != false);
- const bool negate_src2 = ((bool)swizzle.negate_src2 != false);
-
- float24 src1[4] = {
- src1_[(int)swizzle.GetSelectorSrc1(0)],
- src1_[(int)swizzle.GetSelectorSrc1(1)],
- src1_[(int)swizzle.GetSelectorSrc1(2)],
- src1_[(int)swizzle.GetSelectorSrc1(3)],
- };
- if (negate_src1) {
- src1[0] = src1[0] * float24::FromFloat32(-1);
- src1[1] = src1[1] * float24::FromFloat32(-1);
- src1[2] = src1[2] * float24::FromFloat32(-1);
- src1[3] = src1[3] * float24::FromFloat32(-1);
- }
- float24 src2[4] = {
- src2_[(int)swizzle.GetSelectorSrc2(0)],
- src2_[(int)swizzle.GetSelectorSrc2(1)],
- src2_[(int)swizzle.GetSelectorSrc2(2)],
- src2_[(int)swizzle.GetSelectorSrc2(3)],
- };
- if (negate_src2) {
- src2[0] = src2[0] * float24::FromFloat32(-1);
- src2[1] = src2[1] * float24::FromFloat32(-1);
- src2[2] = src2[2] * float24::FromFloat32(-1);
- src2[3] = src2[3] * float24::FromFloat32(-1);
- }
-
- float24* dest = (instr.common.dest.Value() < 0x10) ? &state.output_registers[instr.common.dest.Value().GetIndex()][0]
- : (instr.common.dest.Value() < 0x20) ? &state.temporary_registers[instr.common.dest.Value().GetIndex()][0]
- : dummy_vec4_float24;
-
- state.debug.max_opdesc_id = std::max<u32>(state.debug.max_opdesc_id, 1+instr.common.operand_desc_id);
-
- switch (instr.opcode.Value().EffectiveOpCode()) {
- case OpCode::Id::ADD:
- {
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = src1[i] + src2[i];
- }
-
- break;
- }
-
- case OpCode::Id::MUL:
- {
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = src1[i] * src2[i];
- }
-
- break;
- }
-
- case OpCode::Id::FLR:
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = float24::FromFloat32(std::floor(src1[i].ToFloat32()));
- }
- break;
-
- case OpCode::Id::MAX:
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = std::max(src1[i], src2[i]);
- }
- break;
-
- case OpCode::Id::MIN:
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = std::min(src1[i], src2[i]);
- }
- break;
-
- case OpCode::Id::DP3:
- case OpCode::Id::DP4:
- {
- float24 dot = float24::FromFloat32(0.f);
- int num_components = (instr.opcode.Value() == OpCode::Id::DP3) ? 3 : 4;
- for (int i = 0; i < num_components; ++i)
- dot = dot + src1[i] * src2[i];
-
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = dot;
- }
- break;
- }
-
- // Reciprocal
- case OpCode::Id::RCP:
- {
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- // TODO: Be stable against division by zero!
- // TODO: I think this might be wrong... we should only use one component here
- dest[i] = float24::FromFloat32(1.0f / src1[i].ToFloat32());
- }
-
- break;
- }
-
- // Reciprocal Square Root
- case OpCode::Id::RSQ:
- {
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- // TODO: Be stable against division by zero!
- // TODO: I think this might be wrong... we should only use one component here
- dest[i] = float24::FromFloat32(1.0f / sqrt(src1[i].ToFloat32()));
- }
-
- break;
- }
-
- case OpCode::Id::MOVA:
- {
- for (int i = 0; i < 2; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- // TODO: Figure out how the rounding is done on hardware
- state.address_registers[i] = static_cast<s32>(src1[i].ToFloat32());
- }
-
- break;
- }
-
- case OpCode::Id::MOV:
- {
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = src1[i];
- }
- break;
- }
-
- case OpCode::Id::SLT:
- case OpCode::Id::SLTI:
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = (src1[i] < src2[i]) ? float24::FromFloat32(1.0f) : float24::FromFloat32(0.0f);
- }
- break;
-
- case OpCode::Id::CMP:
- for (int i = 0; i < 2; ++i) {
- // TODO: Can you restrict to one compare via dest masking?
-
- auto compare_op = instr.common.compare_op;
- auto op = (i == 0) ? compare_op.x.Value() : compare_op.y.Value();
-
- switch (op) {
- case compare_op.Equal:
- state.conditional_code[i] = (src1[i] == src2[i]);
- break;
-
- case compare_op.NotEqual:
- state.conditional_code[i] = (src1[i] != src2[i]);
- break;
-
- case compare_op.LessThan:
- state.conditional_code[i] = (src1[i] < src2[i]);
- break;
-
- case compare_op.LessEqual:
- state.conditional_code[i] = (src1[i] <= src2[i]);
- break;
-
- case compare_op.GreaterThan:
- state.conditional_code[i] = (src1[i] > src2[i]);
- break;
-
- case compare_op.GreaterEqual:
- state.conditional_code[i] = (src1[i] >= src2[i]);
- break;
-
- default:
- LOG_ERROR(HW_GPU, "Unknown compare mode %x", static_cast<int>(op));
- break;
- }
- }
- break;
-
- default:
- LOG_ERROR(HW_GPU, "Unhandled arithmetic instruction: 0x%02x (%s): 0x%08x",
- (int)instr.opcode.Value().EffectiveOpCode(), instr.opcode.Value().GetInfo().name, instr.hex);
- DEBUG_ASSERT(false);
- break;
- }
-
- break;
- }
-
- case OpCode::Type::MultiplyAdd:
- {
- if ((instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MAD) ||
- (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI)) {
- const SwizzlePattern& swizzle = *(SwizzlePattern*)&swizzle_data[instr.mad.operand_desc_id];
-
- bool is_inverted = (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MADI);
-
- const float24* src1_ = LookupSourceRegister(instr.mad.GetSrc1(is_inverted));
- const float24* src2_ = LookupSourceRegister(instr.mad.GetSrc2(is_inverted));
- const float24* src3_ = LookupSourceRegister(instr.mad.GetSrc3(is_inverted));
-
- const bool negate_src1 = ((bool)swizzle.negate_src1 != false);
- const bool negate_src2 = ((bool)swizzle.negate_src2 != false);
- const bool negate_src3 = ((bool)swizzle.negate_src3 != false);
-
- float24 src1[4] = {
- src1_[(int)swizzle.GetSelectorSrc1(0)],
- src1_[(int)swizzle.GetSelectorSrc1(1)],
- src1_[(int)swizzle.GetSelectorSrc1(2)],
- src1_[(int)swizzle.GetSelectorSrc1(3)],
- };
- if (negate_src1) {
- src1[0] = src1[0] * float24::FromFloat32(-1);
- src1[1] = src1[1] * float24::FromFloat32(-1);
- src1[2] = src1[2] * float24::FromFloat32(-1);
- src1[3] = src1[3] * float24::FromFloat32(-1);
- }
- float24 src2[4] = {
- src2_[(int)swizzle.GetSelectorSrc2(0)],
- src2_[(int)swizzle.GetSelectorSrc2(1)],
- src2_[(int)swizzle.GetSelectorSrc2(2)],
- src2_[(int)swizzle.GetSelectorSrc2(3)],
- };
- if (negate_src2) {
- src2[0] = src2[0] * float24::FromFloat32(-1);
- src2[1] = src2[1] * float24::FromFloat32(-1);
- src2[2] = src2[2] * float24::FromFloat32(-1);
- src2[3] = src2[3] * float24::FromFloat32(-1);
- }
- float24 src3[4] = {
- src3_[(int)swizzle.GetSelectorSrc3(0)],
- src3_[(int)swizzle.GetSelectorSrc3(1)],
- src3_[(int)swizzle.GetSelectorSrc3(2)],
- src3_[(int)swizzle.GetSelectorSrc3(3)],
- };
- if (negate_src3) {
- src3[0] = src3[0] * float24::FromFloat32(-1);
- src3[1] = src3[1] * float24::FromFloat32(-1);
- src3[2] = src3[2] * float24::FromFloat32(-1);
- src3[3] = src3[3] * float24::FromFloat32(-1);
- }
-
- float24* dest = (instr.mad.dest.Value() < 0x10) ? &state.output_registers[instr.mad.dest.Value().GetIndex()][0]
- : (instr.mad.dest.Value() < 0x20) ? &state.temporary_registers[instr.mad.dest.Value().GetIndex()][0]
- : dummy_vec4_float24;
-
- for (int i = 0; i < 4; ++i) {
- if (!swizzle.DestComponentEnabled(i))
- continue;
-
- dest[i] = src1[i] * src2[i] + src3[i];
- }
- } else {
- LOG_ERROR(HW_GPU, "Unhandled multiply-add instruction: 0x%02x (%s): 0x%08x",
- (int)instr.opcode.Value().EffectiveOpCode(), instr.opcode.Value().GetInfo().name, instr.hex);
- }
- break;
- }
-
- default:
- {
- static auto evaluate_condition = [](const VertexShaderState& state, bool refx, bool refy, Instruction::FlowControlType flow_control) {
- bool results[2] = { refx == state.conditional_code[0],
- refy == state.conditional_code[1] };
-
- switch (flow_control.op) {
- case flow_control.Or:
- return results[0] || results[1];
-
- case flow_control.And:
- return results[0] && results[1];
-
- case flow_control.JustX:
- return results[0];
-
- case flow_control.JustY:
- return results[1];
- }
- };
-
- // Handle each instruction on its own
- switch (instr.opcode.Value()) {
- case OpCode::Id::END:
- exit_loop = true;
- break;
-
- case OpCode::Id::JMPC:
- if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) {
- state.program_counter = instr.flow_control.dest_offset - 1;
- }
- break;
-
- case OpCode::Id::JMPU:
- if (uniforms.b[instr.flow_control.bool_uniform_id]) {
- state.program_counter = instr.flow_control.dest_offset - 1;
- }
- break;
-
- case OpCode::Id::CALL:
- call(state,
- instr.flow_control.dest_offset,
- instr.flow_control.num_instructions,
- state.program_counter + 1, 0, 0);
- break;
-
- case OpCode::Id::CALLU:
- if (uniforms.b[instr.flow_control.bool_uniform_id]) {
- call(state,
- instr.flow_control.dest_offset,
- instr.flow_control.num_instructions,
- state.program_counter + 1, 0, 0);
- }
- break;
-
- case OpCode::Id::CALLC:
- if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) {
- call(state,
- instr.flow_control.dest_offset,
- instr.flow_control.num_instructions,
- state.program_counter + 1, 0, 0);
- }
- break;
-
- case OpCode::Id::NOP:
- break;
-
- case OpCode::Id::IFU:
- if (uniforms.b[instr.flow_control.bool_uniform_id]) {
- call(state,
- state.program_counter + 1,
- instr.flow_control.dest_offset - state.program_counter - 1,
- instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0);
- } else {
- call(state,
- instr.flow_control.dest_offset,
- instr.flow_control.num_instructions,
- instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0);
- }
-
- break;
-
- case OpCode::Id::IFC:
- {
- // TODO: Do we need to consider swizzlers here?
-
- if (evaluate_condition(state, instr.flow_control.refx, instr.flow_control.refy, instr.flow_control)) {
- call(state,
- state.program_counter + 1,
- instr.flow_control.dest_offset - state.program_counter - 1,
- instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0);
- } else {
- call(state,
- instr.flow_control.dest_offset,
- instr.flow_control.num_instructions,
- instr.flow_control.dest_offset + instr.flow_control.num_instructions, 0, 0);
- }
-
- break;
- }
-
- case OpCode::Id::LOOP:
- {
- state.address_registers[2] = uniforms.i[instr.flow_control.int_uniform_id].y;
-
- call(state,
- state.program_counter + 1,
- instr.flow_control.dest_offset - state.program_counter + 1,
- instr.flow_control.dest_offset + 1,
- uniforms.i[instr.flow_control.int_uniform_id].x,
- uniforms.i[instr.flow_control.int_uniform_id].z);
- break;
- }
-
- default:
- LOG_ERROR(HW_GPU, "Unhandled instruction: 0x%02x (%s): 0x%08x",
- (int)instr.opcode.Value().EffectiveOpCode(), instr.opcode.Value().GetInfo().name, instr.hex);
- break;
- }
-
- break;
- }
- }
-
- ++state.program_counter;
-
- if (exit_loop)
- break;
- }
-}
-
-static Common::Profiling::TimingCategory shader_category("Vertex Shader");
-
-OutputVertex RunShader(const InputVertex& input, int num_attributes, const Regs::ShaderConfig& config, const State::ShaderSetup& setup) {
- Common::Profiling::ScopeTimer timer(shader_category);
-
- VertexShaderState state;
-
- state.program_counter = config.main_offset;
- state.debug.max_offset = 0;
- state.debug.max_opdesc_id = 0;
-
- // Setup input register table
- const auto& attribute_register_map = config.input_register_map;
- float24 dummy_register;
- boost::fill(state.input_register_table, &dummy_register);
-
- if (num_attributes > 0) state.input_register_table[attribute_register_map.attribute0_register] = &input.attr[0].x;
- if (num_attributes > 1) state.input_register_table[attribute_register_map.attribute1_register] = &input.attr[1].x;
- if (num_attributes > 2) state.input_register_table[attribute_register_map.attribute2_register] = &input.attr[2].x;
- if (num_attributes > 3) state.input_register_table[attribute_register_map.attribute3_register] = &input.attr[3].x;
- if (num_attributes > 4) state.input_register_table[attribute_register_map.attribute4_register] = &input.attr[4].x;
- if (num_attributes > 5) state.input_register_table[attribute_register_map.attribute5_register] = &input.attr[5].x;
- if (num_attributes > 6) state.input_register_table[attribute_register_map.attribute6_register] = &input.attr[6].x;
- if (num_attributes > 7) state.input_register_table[attribute_register_map.attribute7_register] = &input.attr[7].x;
- if (num_attributes > 8) state.input_register_table[attribute_register_map.attribute8_register] = &input.attr[8].x;
- if (num_attributes > 9) state.input_register_table[attribute_register_map.attribute9_register] = &input.attr[9].x;
- if (num_attributes > 10) state.input_register_table[attribute_register_map.attribute10_register] = &input.attr[10].x;
- if (num_attributes > 11) state.input_register_table[attribute_register_map.attribute11_register] = &input.attr[11].x;
- if (num_attributes > 12) state.input_register_table[attribute_register_map.attribute12_register] = &input.attr[12].x;
- if (num_attributes > 13) state.input_register_table[attribute_register_map.attribute13_register] = &input.attr[13].x;
- if (num_attributes > 14) state.input_register_table[attribute_register_map.attribute14_register] = &input.attr[14].x;
- if (num_attributes > 15) state.input_register_table[attribute_register_map.attribute15_register] = &input.attr[15].x;
-
- state.conditional_code[0] = false;
- state.conditional_code[1] = false;
-
- ProcessShaderCode(state);
-#if PICA_DUMP_SHADERS
- DebugUtils::DumpShader(setup.program_code.data(), state.debug.max_offset, setup.swizzle_data.data(),
- state.debug.max_opdesc_id, config.main_offset,
- g_state.regs.vs_output_attributes); // TODO: Don't hardcode VS here
-#endif
-
- // Setup output data
- OutputVertex ret;
- // TODO(neobrain): Under some circumstances, up to 16 attributes may be output. We need to
- // figure out what those circumstances are and enable the remaining outputs then.
- for (int i = 0; i < 7; ++i) {
- const auto& output_register_map = g_state.regs.vs_output_attributes[i]; // TODO: Don't hardcode VS here
-
- u32 semantics[4] = {
- output_register_map.map_x, output_register_map.map_y,
- output_register_map.map_z, output_register_map.map_w
- };
-
- for (int comp = 0; comp < 4; ++comp) {
- float24* out = ((float24*)&ret) + semantics[comp];
- if (semantics[comp] != Regs::VSOutputAttributes::INVALID) {
- *out = state.output_registers[i][comp];
- } else {
- // Zero output so that attributes which aren't output won't have denormals in them,
- // which would slow us down later.
- memset(out, 0, sizeof(*out));
- }
- }
- }
-
- // The hardware takes the absolute and saturates vertex colors like this, *before* doing interpolation
- for (int i = 0; i < 4; ++i) {
- ret.color[i] = float24::FromFloat32(
- std::fmin(std::fabs(ret.color[i].ToFloat32()), 1.0f));
- }
-
- LOG_TRACE(Render_Software, "Output vertex: pos (%.2f, %.2f, %.2f, %.2f), col(%.2f, %.2f, %.2f, %.2f), tc0(%.2f, %.2f)",
- ret.pos.x.ToFloat32(), ret.pos.y.ToFloat32(), ret.pos.z.ToFloat32(), ret.pos.w.ToFloat32(),
- ret.color.x.ToFloat32(), ret.color.y.ToFloat32(), ret.color.z.ToFloat32(), ret.color.w.ToFloat32(),
- ret.tc0.u().ToFloat32(), ret.tc0.v().ToFloat32());
-
- return ret;
-}
-
-
-} // namespace
-
-} // namespace