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Merge pull request #726 from bunnei/gpu-improvements 

GPU improvements
This commit is contained in:
bunnei 2015-05-09 22:45:05 -04:00
parent 088f6ae2c6 23e8be573e
commit ba0bfe7d82
4 changed files with 118 additions and 20 deletions
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2
externals/nihstro vendored

@ -1 +1 @@
Subproject commit 4a78588b308564f7ebae193e0ae00d9a0d5741d5
Subproject commit 81f1804a43f625e3a1a20752c0db70a413410380

67
src/video_core/pica.h
View File

@ -226,7 +226,8 @@ struct Regs {
Texture1 = 0x4,
Texture2 = 0x5,
Texture3 = 0x6,
// 0x7-0xc = primary color??
PreviousBuffer = 0xd,
Constant = 0xe,
Previous = 0xf,
};
@ -299,7 +300,18 @@ struct Regs {
BitField<24, 8, u32> const_a;
};
INSERT_PADDING_WORDS(0x1);
union {
BitField< 0, 2, u32> color_scale;
BitField<16, 2, u32> alpha_scale;
};
inline unsigned GetColorMultiplier() const {
return (color_scale < 3) ? (1 << color_scale) : 1;
}
inline unsigned GetAlphaMultiplier() const {
return (alpha_scale < 3) ? (1 << alpha_scale) : 1;
}
};
TevStageConfig tev_stage0;
@ -309,11 +321,36 @@ struct Regs {
TevStageConfig tev_stage2;
INSERT_PADDING_WORDS(0x3);
TevStageConfig tev_stage3;
INSERT_PADDING_WORDS(0x13);
INSERT_PADDING_WORDS(0x3);
union {
// Tev stages 0-3 write their output to the combiner buffer if the corresponding bit in
// these masks are set
BitField< 8, 4, u32> update_mask_rgb;
BitField<12, 4, u32> update_mask_a;
bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const {
return (stage_index < 4) && (update_mask_rgb & (1 << stage_index));
}
bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const {
return (stage_index < 4) && (update_mask_a & (1 << stage_index));
}
} tev_combiner_buffer_input;
INSERT_PADDING_WORDS(0xf);
TevStageConfig tev_stage4;
INSERT_PADDING_WORDS(0x3);
TevStageConfig tev_stage5;
INSERT_PADDING_WORDS(0x3);
union {
BitField< 0, 8, u32> r;
BitField< 8, 8, u32> g;
BitField<16, 8, u32> b;
BitField<24, 8, u32> a;
} tev_combiner_buffer_color;
INSERT_PADDING_WORDS(0x2);
const std::array<Regs::TevStageConfig,6> GetTevStages() const {
return { tev_stage0, tev_stage1,
@ -426,9 +463,7 @@ struct Regs {
D24S8 = 3
};
/*
* Returns the number of bytes in the specified depth format
*/
// Returns the number of bytes in the specified depth format
static u32 BytesPerDepthPixel(DepthFormat format) {
switch (format) {
case DepthFormat::D16:
@ -443,6 +478,20 @@ struct Regs {
}
}
// Returns the number of bits per depth component of the specified depth format
static u32 DepthBitsPerPixel(DepthFormat format) {
switch (format) {
case DepthFormat::D16:
return 16;
case DepthFormat::D24:
case DepthFormat::D24S8:
return 24;
default:
LOG_CRITICAL(HW_GPU, "Unknown depth format %u", format);
UNIMPLEMENTED();
}
}
struct {
// Components are laid out in reverse byte order, most significant bits first.
enum ColorFormat : u32 {
@ -784,8 +833,10 @@ struct Regs {
ADD_FIELD(tev_stage1);
ADD_FIELD(tev_stage2);
ADD_FIELD(tev_stage3);
ADD_FIELD(tev_combiner_buffer_input);
ADD_FIELD(tev_stage4);
ADD_FIELD(tev_stage5);
ADD_FIELD(tev_combiner_buffer_color);
ADD_FIELD(output_merger);
ADD_FIELD(framebuffer);
ADD_FIELD(vertex_attributes);
@ -859,8 +910,10 @@ ASSERT_REG_POSITION(tev_stage0, 0xc0);
ASSERT_REG_POSITION(tev_stage1, 0xc8);
ASSERT_REG_POSITION(tev_stage2, 0xd0);
ASSERT_REG_POSITION(tev_stage3, 0xd8);
ASSERT_REG_POSITION(tev_combiner_buffer_input, 0xe0);
ASSERT_REG_POSITION(tev_stage4, 0xf0);
ASSERT_REG_POSITION(tev_stage5, 0xf8);
ASSERT_REG_POSITION(tev_combiner_buffer_color, 0xfd);
ASSERT_REG_POSITION(output_merger, 0x100);
ASSERT_REG_POSITION(framebuffer, 0x110);
ASSERT_REG_POSITION(vertex_attributes, 0x200);

49
src/video_core/rasterizer.cpp
View File

@ -90,7 +90,7 @@ static const Math::Vec4<u8> GetPixel(int x, int y) {
UNIMPLEMENTED();
}
return {};
return {0, 0, 0, 0};
}
static u32 GetDepth(int x, int y) {
@ -376,7 +376,13 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
// with some basic arithmetic. Alpha combiners can be configured separately but work
// analogously.
Math::Vec4<u8> combiner_output;
for (const auto& tev_stage : tev_stages) {
Math::Vec4<u8> combiner_buffer = {
registers.tev_combiner_buffer_color.r, registers.tev_combiner_buffer_color.g,
registers.tev_combiner_buffer_color.b, registers.tev_combiner_buffer_color.a
};
for (unsigned tev_stage_index = 0; tev_stage_index < tev_stages.size(); ++tev_stage_index) {
const auto& tev_stage = tev_stages[tev_stage_index];
using Source = Regs::TevStageConfig::Source;
using ColorModifier = Regs::TevStageConfig::ColorModifier;
using AlphaModifier = Regs::TevStageConfig::AlphaModifier;
@ -398,6 +404,9 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
case Source::Texture2:
return texture_color[2];
case Source::PreviousBuffer:
return combiner_buffer;
case Source::Constant:
return {tev_stage.const_r, tev_stage.const_g, tev_stage.const_b, tev_stage.const_a};
@ -407,7 +416,7 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
default:
LOG_ERROR(HW_GPU, "Unknown color combiner source %d\n", (int)source);
UNIMPLEMENTED();
return {};
return {0, 0, 0, 0};
}
};
@ -490,6 +499,16 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
return result.Cast<u8>();
}
case Operation::AddSigned:
{
// TODO(bunnei): Verify that the color conversion from (float) 0.5f to (byte) 128 is correct
auto result = input[0].Cast<int>() + input[1].Cast<int>() - Math::MakeVec<int>(128, 128, 128);
result.r() = MathUtil::Clamp<int>(result.r(), 0, 255);
result.g() = MathUtil::Clamp<int>(result.g(), 0, 255);
result.b() = MathUtil::Clamp<int>(result.b(), 0, 255);
return result.Cast<u8>();
}
case Operation::Lerp:
return ((input[0] * input[2] + input[1] * (Math::MakeVec<u8>(255, 255, 255) - input[2]).Cast<u8>()) / 255).Cast<u8>();
@ -524,7 +543,7 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
default:
LOG_ERROR(HW_GPU, "Unknown color combiner operation %d\n", (int)op);
UNIMPLEMENTED();
return {};
return {0, 0, 0};
}
};
@ -578,7 +597,20 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
};
auto alpha_output = AlphaCombine(tev_stage.alpha_op, alpha_result);
combiner_output = Math::MakeVec(color_output, alpha_output);
combiner_output[0] = std::min((unsigned)255, color_output.r() * tev_stage.GetColorMultiplier());
combiner_output[1] = std::min((unsigned)255, color_output.g() * tev_stage.GetColorMultiplier());
combiner_output[2] = std::min((unsigned)255, color_output.b() * tev_stage.GetColorMultiplier());
combiner_output[3] = std::min((unsigned)255, alpha_output * tev_stage.GetAlphaMultiplier());
if (registers.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferColor(tev_stage_index)) {
combiner_buffer.r() = combiner_output.r();
combiner_buffer.g() = combiner_output.g();
combiner_buffer.b() = combiner_output.b();
}
if (registers.tev_combiner_buffer_input.TevStageUpdatesCombinerBufferAlpha(tev_stage_index)) {
combiner_buffer.a() = combiner_output.a();
}
}
if (registers.output_merger.alpha_test.enable) {
@ -624,9 +656,10 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
// TODO: Does depth indeed only get written even if depth testing is enabled?
if (registers.output_merger.depth_test_enable) {
u16 z = (u16)((v0.screenpos[2].ToFloat32() * w0 +
v1.screenpos[2].ToFloat32() * w1 +
v2.screenpos[2].ToFloat32() * w2) * 65535.f / wsum);
unsigned num_bits = Pica::Regs::DepthBitsPerPixel(registers.framebuffer.depth_format);
u32 z = (u32)((v0.screenpos[2].ToFloat32() * w0 +
v1.screenpos[2].ToFloat32() * w1 +
v2.screenpos[2].ToFloat32() * w2) * ((1 << num_bits) - 1) / wsum);
u32 ref_z = GetDepth(x >> 4, y >> 4);
bool pass = false;

20
src/video_core/vertex_shader.cpp
View File

@ -235,6 +235,15 @@ static void ProcessShaderCode(VertexShaderState& state) {
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))
@ -366,12 +375,15 @@ static void ProcessShaderCode(VertexShaderState& state) {
case OpCode::Type::MultiplyAdd:
{
if (instr.opcode.Value().EffectiveOpCode() == OpCode::Id::MAD) {
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];
const float24* src1_ = LookupSourceRegister(instr.mad.src1);
const float24* src2_ = LookupSourceRegister(instr.mad.src2);
const float24* src3_ = LookupSourceRegister(instr.mad.src3);
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);