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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/logging/log.h"
#include "common/profiler.h"
#include "video_core/debug_utils/debug_utils.h"
#include "video_core/pica.h"
#include "shader.h"
#include "shader_interpreter.h"
namespace Pica {
namespace Shader {
void Setup(UnitState& state) {
// TODO(bunnei): This will be used by the JIT in a subsequent patch
}
static Common::Profiling::TimingCategory shader_category("Vertex Shader");
OutputVertex Run(UnitState& state, const InputVertex& input, int num_attributes) {
auto& config = g_state.regs.vs;
auto& setup = g_state.vs;
Common::Profiling::ScopeTimer timer(shader_category);
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;
if (num_attributes > 0) state.input_registers[attribute_register_map.attribute0_register] = input.attr[0];
if (num_attributes > 1) state.input_registers[attribute_register_map.attribute1_register] = input.attr[1];
if (num_attributes > 2) state.input_registers[attribute_register_map.attribute2_register] = input.attr[2];
if (num_attributes > 3) state.input_registers[attribute_register_map.attribute3_register] = input.attr[3];
if (num_attributes > 4) state.input_registers[attribute_register_map.attribute4_register] = input.attr[4];
if (num_attributes > 5) state.input_registers[attribute_register_map.attribute5_register] = input.attr[5];
if (num_attributes > 6) state.input_registers[attribute_register_map.attribute6_register] = input.attr[6];
if (num_attributes > 7) state.input_registers[attribute_register_map.attribute7_register] = input.attr[7];
if (num_attributes > 8) state.input_registers[attribute_register_map.attribute8_register] = input.attr[8];
if (num_attributes > 9) state.input_registers[attribute_register_map.attribute9_register] = input.attr[9];
if (num_attributes > 10) state.input_registers[attribute_register_map.attribute10_register] = input.attr[10];
if (num_attributes > 11) state.input_registers[attribute_register_map.attribute11_register] = input.attr[11];
if (num_attributes > 12) state.input_registers[attribute_register_map.attribute12_register] = input.attr[12];
if (num_attributes > 13) state.input_registers[attribute_register_map.attribute13_register] = input.attr[13];
if (num_attributes > 14) state.input_registers[attribute_register_map.attribute14_register] = input.attr[14];
if (num_attributes > 15) state.input_registers[attribute_register_map.attribute15_register] = input.attr[15];
state.conditional_code[0] = false;
state.conditional_code[1] = false;
RunInterpreter(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 Shader
} // namespace Pica
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