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Merge pull request #1822 from ReinUsesLisp/glsl-scope

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gl_shader_decompiler: Introduce a scoped object and style changes
This commit is contained in:
bunnei 2018-12-03 17:10:02 -05:00 committed by GitHub
commit 8a12daac8c
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1 changed files with 213 additions and 250 deletions
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407
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -201,14 +201,53 @@ private:
} }
}; };
template <typename T>
class ShaderScopedScope {
public:
explicit ShaderScopedScope(T& writer, std::string_view begin_expr, std::string end_expr)
: writer(writer), end_expr(std::move(end_expr)) {
if (begin_expr.empty()) {
writer.AddLine('{');
} else {
writer.AddExpression(begin_expr);
writer.AddLine(" {");
}
++writer.scope;
}
ShaderScopedScope(const ShaderScopedScope&) = delete;
~ShaderScopedScope() {
--writer.scope;
if (end_expr.empty()) {
writer.AddLine('}');
} else {
writer.AddExpression("} ");
writer.AddExpression(end_expr);
writer.AddLine(';');
}
}
ShaderScopedScope& operator=(const ShaderScopedScope&) = delete;
private:
T& writer;
std::string end_expr;
};
class ShaderWriter { class ShaderWriter {
public: public:
void AddLine(std::string_view text) { void AddExpression(std::string_view text) {
DEBUG_ASSERT(scope >= 0); DEBUG_ASSERT(scope >= 0);
if (!text.empty()) { if (!text.empty()) {
AppendIndentation(); AppendIndentation();
} }
shader_source += text; shader_source += text;
}
void AddLine(std::string_view text) {
AddExpression(text);
AddNewLine(); AddNewLine();
} }
@ -228,6 +267,11 @@ public:
return std::move(shader_source); return std::move(shader_source);
} }
ShaderScopedScope<ShaderWriter> Scope(std::string_view begin_expr = {},
std::string end_expr = {}) {
return ShaderScopedScope(*this, begin_expr, end_expr);
}
int scope = 0; int scope = 0;
private: private:
@ -311,7 +355,7 @@ public:
// Default - do nothing // Default - do nothing
return value; return value;
default: default:
UNIMPLEMENTED_MSG("Unimplemented conversion size: {}", static_cast<u32>(size)); UNREACHABLE_MSG("Unimplemented conversion size: {}", static_cast<u32>(size));
} }
} }
@ -816,14 +860,12 @@ private:
} }
if (precise && stage != Maxwell3D::Regs::ShaderStage::Fragment) { if (precise && stage != Maxwell3D::Regs::ShaderStage::Fragment) {
shader.AddLine('{'); const auto scope = shader.Scope();
++shader.scope;
// This avoids optimizations of constant propagation and keeps the code as the original // This avoids optimizations of constant propagation and keeps the code as the original
// Sadly using the precise keyword causes "linking" errors on fragment shaders. // Sadly using the precise keyword causes "linking" errors on fragment shaders.
shader.AddLine("precise float tmp = " + src + ';'); shader.AddLine("precise float tmp = " + src + ';');
shader.AddLine(dest + " = tmp;"); shader.AddLine(dest + " = tmp;");
--shader.scope;
shader.AddLine('}');
} else { } else {
shader.AddLine(dest + " = " + src + ';'); shader.AddLine(dest + " = " + src + ';');
} }
@ -1301,15 +1343,7 @@ private:
regs.SetRegisterToInteger(dest, true, 0, result, 1, 1); regs.SetRegisterToInteger(dest, true, 0, result, 1, 1);
} }
void WriteTexsInstruction(const Instruction& instr, const std::string& coord, void WriteTexsInstruction(const Instruction& instr, const std::string& texture) {
const std::string& texture) {
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
shader.AddLine(coord);
shader.AddLine("vec4 texture_tmp = " + texture + ';');
// TEXS has two destination registers and a swizzle. The first two elements in the swizzle // TEXS has two destination registers and a swizzle. The first two elements in the swizzle
// go into gpr0+0 and gpr0+1, and the rest goes into gpr28+0 and gpr28+1 // go into gpr0+0 and gpr0+1, and the rest goes into gpr28+0 and gpr28+1
@ -1321,19 +1355,17 @@ private:
if (written_components < 2) { if (written_components < 2) {
// Write the first two swizzle components to gpr0 and gpr0+1 // Write the first two swizzle components to gpr0 and gpr0+1
regs.SetRegisterToFloat(instr.gpr0, component, "texture_tmp", 1, 4, false, regs.SetRegisterToFloat(instr.gpr0, component, texture, 1, 4, false,
written_components % 2); written_components % 2);
} else { } else {
ASSERT(instr.texs.HasTwoDestinations()); ASSERT(instr.texs.HasTwoDestinations());
// Write the rest of the swizzle components to gpr28 and gpr28+1 // Write the rest of the swizzle components to gpr28 and gpr28+1
regs.SetRegisterToFloat(instr.gpr28, component, "texture_tmp", 1, 4, false, regs.SetRegisterToFloat(instr.gpr28, component, texture, 1, 4, false,
written_components % 2); written_components % 2);
} }
++written_components; ++written_components;
} }
--shader.scope;
shader.AddLine('}');
} }
static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) { static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) {
@ -1356,12 +1388,10 @@ private:
* top. * top.
*/ */
void EmitPushToFlowStack(u32 target) { void EmitPushToFlowStack(u32 target) {
shader.AddLine('{'); const auto scope = shader.Scope();
++shader.scope;
shader.AddLine("flow_stack[flow_stack_top] = " + std::to_string(target) + "u;"); shader.AddLine("flow_stack[flow_stack_top] = " + std::to_string(target) + "u;");
shader.AddLine("flow_stack_top++;"); shader.AddLine("flow_stack_top++;");
--shader.scope;
shader.AddLine('}');
} }
/* /*
@ -1369,13 +1399,11 @@ private:
* popped address and decrementing the stack top. * popped address and decrementing the stack top.
*/ */
void EmitPopFromFlowStack() { void EmitPopFromFlowStack() {
shader.AddLine('{'); const auto scope = shader.Scope();
++shader.scope;
shader.AddLine("flow_stack_top--;"); shader.AddLine("flow_stack_top--;");
shader.AddLine("jmp_to = flow_stack[flow_stack_top];"); shader.AddLine("jmp_to = flow_stack[flow_stack_top];");
shader.AddLine("break;"); shader.AddLine("break;");
--shader.scope;
shader.AddLine('}');
} }
/// Writes the output values from a fragment shader to the corresponding GLSL output variables. /// Writes the output values from a fragment shader to the corresponding GLSL output variables.
@ -2287,8 +2315,7 @@ private:
UNIMPLEMENTED_IF(instr.conversion.selector); UNIMPLEMENTED_IF(instr.conversion.selector);
UNIMPLEMENTED_IF_MSG(instr.generates_cc, UNIMPLEMENTED_IF_MSG(instr.generates_cc,
"Condition codes generation in I2F is not implemented"); "Condition codes generation in I2F is not implemented");
std::string op_a;
std::string op_a{};
if (instr.is_b_gpr) { if (instr.is_b_gpr) {
op_a = op_a =
@ -2444,10 +2471,7 @@ private:
case OpCode::Id::LD_C: { case OpCode::Id::LD_C: {
UNIMPLEMENTED_IF(instr.ld_c.unknown != 0); UNIMPLEMENTED_IF(instr.ld_c.unknown != 0);
// Add an extra scope and declare the index register inside to prevent const auto scope = shader.Scope();
// overwriting it in case it is used as an output of the LD instruction.
shader.AddLine("{");
++shader.scope;
shader.AddLine("uint index = (" + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + shader.AddLine("uint index = (" + regs.GetRegisterAsInteger(instr.gpr8, 0, false) +
" / 4) & (MAX_CONSTBUFFER_ELEMENTS - 1);"); " / 4) & (MAX_CONSTBUFFER_ELEMENTS - 1);");
@ -2473,19 +2497,13 @@ private:
UNIMPLEMENTED_MSG("Unhandled type: {}", UNIMPLEMENTED_MSG("Unhandled type: {}",
static_cast<unsigned>(instr.ld_c.type.Value())); static_cast<unsigned>(instr.ld_c.type.Value()));
} }
--shader.scope;
shader.AddLine("}");
break; break;
} }
case OpCode::Id::LD_L: { case OpCode::Id::LD_L: {
UNIMPLEMENTED_IF_MSG(instr.ld_l.unknown == 1, "LD_L Unhandled mode: {}", UNIMPLEMENTED_IF_MSG(instr.ld_l.unknown == 1, "LD_L Unhandled mode: {}",
static_cast<unsigned>(instr.ld_l.unknown.Value())); static_cast<unsigned>(instr.ld_l.unknown.Value()));
// Add an extra scope and declare the index register inside to prevent const auto scope = shader.Scope();
// overwriting it in case it is used as an output of the LD instruction.
shader.AddLine('{');
++shader.scope;
std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " + std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " +
std::to_string(instr.smem_imm.Value()) + ')'; std::to_string(instr.smem_imm.Value()) + ')';
@ -2502,9 +2520,6 @@ private:
UNIMPLEMENTED_MSG("LD_L Unhandled type: {}", UNIMPLEMENTED_MSG("LD_L Unhandled type: {}",
static_cast<unsigned>(instr.ldst_sl.type.Value())); static_cast<unsigned>(instr.ldst_sl.type.Value()));
} }
--shader.scope;
shader.AddLine('}');
break; break;
} }
case OpCode::Id::ST_A: { case OpCode::Id::ST_A: {
@ -2539,10 +2554,7 @@ private:
UNIMPLEMENTED_IF_MSG(instr.st_l.unknown == 0, "ST_L Unhandled mode: {}", UNIMPLEMENTED_IF_MSG(instr.st_l.unknown == 0, "ST_L Unhandled mode: {}",
static_cast<unsigned>(instr.st_l.unknown.Value())); static_cast<unsigned>(instr.st_l.unknown.Value()));
// Add an extra scope and declare the index register inside to prevent const auto scope = shader.Scope();
// overwriting it in case it is used as an output of the LD instruction.
shader.AddLine('{');
++shader.scope;
std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " + std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " +
std::to_string(instr.smem_imm.Value()) + ')'; std::to_string(instr.smem_imm.Value()) + ')';
@ -2557,14 +2569,10 @@ private:
UNIMPLEMENTED_MSG("ST_L Unhandled type: {}", UNIMPLEMENTED_MSG("ST_L Unhandled type: {}",
static_cast<unsigned>(instr.ldst_sl.type.Value())); static_cast<unsigned>(instr.ldst_sl.type.Value()));
} }
--shader.scope;
shader.AddLine('}');
break; break;
} }
case OpCode::Id::TEX: { case OpCode::Id::TEX: {
Tegra::Shader::TextureType texture_type{instr.tex.texture_type}; Tegra::Shader::TextureType texture_type{instr.tex.texture_type};
std::string coord;
const bool is_array = instr.tex.array != 0; const bool is_array = instr.tex.array != 0;
UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP), UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
@ -2597,21 +2605,23 @@ private:
bool depth_compare_extra = false; bool depth_compare_extra = false;
const auto scope = shader.Scope();
switch (num_coordinates) { switch (num_coordinates) {
case 1: { case 1: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index); const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
if (is_array) { if (is_array) {
if (depth_compare) { if (depth_compare) {
coord = "vec3 coords = vec3(" + x + ", " + depth_value + ", " + shader.AddLine("vec3 coords = vec3(" + x + ", " + depth_value + ", " +
array_elem + ");"; array_elem + ");");
} else { } else {
coord = "vec2 coords = vec2(" + x + ", " + array_elem + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + array_elem + ");");
} }
} else { } else {
if (depth_compare) { if (depth_compare) {
coord = "vec2 coords = vec2(" + x + ", " + depth_value + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + depth_value + ");");
} else { } else {
coord = "float coords = " + x + ';'; shader.AddLine("float coords = " + x + ';');
} }
} }
break; break;
@ -2622,17 +2632,18 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1); regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1);
if (is_array) { if (is_array) {
if (depth_compare) { if (depth_compare) {
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + depth_value + shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " +
", " + array_elem + ");"; depth_value + ", " + array_elem + ");");
} else { } else {
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + array_elem + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
array_elem + ");");
} }
} else { } else {
if (depth_compare) { if (depth_compare) {
coord = shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
"vec3 coords = vec3(" + x + ", " + y + ", " + depth_value + ");"; depth_value + ");");
} else { } else {
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
} }
} }
break; break;
@ -2645,14 +2656,14 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 2); regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 2);
if (is_array) { if (is_array) {
depth_compare_extra = depth_compare; depth_compare_extra = depth_compare;
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " + shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
array_elem + ");"; array_elem + ");");
} else { } else {
if (depth_compare) { if (depth_compare) {
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " + shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
depth_value + ");"; depth_value + ");");
} else { } else {
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
} }
} }
break; break;
@ -2664,7 +2675,7 @@ private:
// Fallback to interpreting as a 2D texture for now // Fallback to interpreting as a 2D texture for now
const std::string x = regs.GetRegisterAsFloat(instr.gpr8); const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D; texture_type = Tegra::Shader::TextureType::Texture2D;
} }
@ -2673,79 +2684,61 @@ private:
// Add an extra scope and declare the texture coords inside to prevent // Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction. // overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{'); const std::string texture = [&]() {
++shader.scope;
shader.AddLine(coord);
std::string texture;
switch (instr.tex.GetTextureProcessMode()) { switch (instr.tex.GetTextureProcessMode()) {
case Tegra::Shader::TextureProcessMode::None: { case Tegra::Shader::TextureProcessMode::None:
if (!depth_compare_extra) { if (depth_compare_extra) {
texture = "texture(" + sampler + ", coords)"; return "texture(" + sampler + ", coords, " + depth_value + ')';
} else {
texture = "texture(" + sampler + ", coords, " + depth_value + ')';
} }
break; return "texture(" + sampler + ", coords)";
} case Tegra::Shader::TextureProcessMode::LZ:
case Tegra::Shader::TextureProcessMode::LZ: { if (depth_compare_extra) {
if (!depth_compare_extra) { return "texture(" + sampler + ", coords, " + depth_value + ')';
texture = "textureLod(" + sampler + ", coords, 0.0)";
} else {
texture = "texture(" + sampler + ", coords, " + depth_value + ')';
}
break;
} }
return "textureLod(" + sampler + ", coords, 0.0)";
case Tegra::Shader::TextureProcessMode::LB: case Tegra::Shader::TextureProcessMode::LB:
case Tegra::Shader::TextureProcessMode::LBA: { case Tegra::Shader::TextureProcessMode::LBA:
// TODO: Figure if A suffix changes the equation at all. // TODO: Figure if A suffix changes the equation at all.
if (!depth_compare_extra) { if (depth_compare_extra) {
texture = "texture(" + sampler + ", coords, " + lod_value + ')'; LOG_WARNING(
} else { HW_GPU,
texture = "texture(" + sampler + ", coords, " + depth_value + ')';
LOG_WARNING(HW_GPU,
"OpenGL Limitation: can't set bias value along depth compare"); "OpenGL Limitation: can't set bias value along depth compare");
return "texture(" + sampler + ", coords, " + depth_value + ')';
} }
break; return "texture(" + sampler + ", coords, " + lod_value + ')';
}
case Tegra::Shader::TextureProcessMode::LL: case Tegra::Shader::TextureProcessMode::LL:
case Tegra::Shader::TextureProcessMode::LLA: { case Tegra::Shader::TextureProcessMode::LLA:
// TODO: Figure if A suffix changes the equation at all. // TODO: Figure if A suffix changes the equation at all.
if (!depth_compare_extra) { if (depth_compare_extra) {
texture = "textureLod(" + sampler + ", coords, " + lod_value + ')'; LOG_WARNING(
} else { HW_GPU,
texture = "texture(" + sampler + ", coords, " + depth_value + ')';
LOG_WARNING(HW_GPU,
"OpenGL Limitation: can't set lod value along depth compare"); "OpenGL Limitation: can't set lod value along depth compare");
return "texture(" + sampler + ", coords, " + depth_value + ')';
} }
break; return "textureLod(" + sampler + ", coords, " + lod_value + ')';
} default:
default: {
if (!depth_compare_extra) {
texture = "texture(" + sampler + ", coords)";
} else {
texture = "texture(" + sampler + ", coords, " + depth_value + ')';
}
UNIMPLEMENTED_MSG("Unhandled texture process mode {}", UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
static_cast<u32>(instr.tex.GetTextureProcessMode())); static_cast<u32>(instr.tex.GetTextureProcessMode()));
if (depth_compare_extra) {
return "texture(" + sampler + ", coords, " + depth_value + ')';
} }
return "texture(" + sampler + ", coords)";
} }
if (!depth_compare) { }();
shader.AddLine("vec4 texture_tmp = " + texture + ';');
if (depth_compare) {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
std::size_t dest_elem{}; std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) { for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) { if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components // Skip disabled components
continue; continue;
} }
regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false, regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
dest_elem);
++dest_elem; ++dest_elem;
} }
} else {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} }
--shader.scope;
shader.AddLine('}');
break; break;
} }
case OpCode::Id::TEXS: { case OpCode::Id::TEXS: {
@ -2755,26 +2748,28 @@ private:
UNIMPLEMENTED_IF_MSG(instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP), UNIMPLEMENTED_IF_MSG(instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented"); "NODEP is not implemented");
const auto scope = shader.Scope();
const bool depth_compare = const bool depth_compare =
instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC); instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
u32 num_coordinates = TextureCoordinates(texture_type); u32 num_coordinates = TextureCoordinates(texture_type);
const auto process_mode = instr.texs.GetTextureProcessMode(); const auto process_mode = instr.texs.GetTextureProcessMode();
std::string lod_value;
std::string coord;
u32 lod_offset = 0; u32 lod_offset = 0;
if (process_mode == Tegra::Shader::TextureProcessMode::LL) { if (process_mode == Tegra::Shader::TextureProcessMode::LL) {
if (num_coordinates > 2) { if (num_coordinates > 2) {
lod_value = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1); shader.AddLine("float lod_value = " +
regs.GetRegisterAsFloat(instr.gpr20.Value() + 1) + ';');
lod_offset = 2; lod_offset = 2;
} else { } else {
lod_value = regs.GetRegisterAsFloat(instr.gpr20); shader.AddLine("float lod_value = " + regs.GetRegisterAsFloat(instr.gpr20) +
';');
lod_offset = 1; lod_offset = 1;
} }
} }
switch (num_coordinates) { switch (num_coordinates) {
case 1: { case 1: {
coord = "float coords = " + regs.GetRegisterAsFloat(instr.gpr8) + ';'; shader.AddLine("float coords = " + regs.GetRegisterAsFloat(instr.gpr8) + ';');
break; break;
} }
case 2: { case 2: {
@ -2784,13 +2779,14 @@ private:
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20); const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1); const std::string z = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " + index + shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
");"; index + ");");
} else { } else {
const std::string index = regs.GetRegisterAsInteger(instr.gpr8); const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20); const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + index + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + index +
");");
} }
} else { } else {
if (lod_offset != 0) { if (lod_offset != 0) {
@ -2800,12 +2796,13 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = const std::string z =
regs.GetRegisterAsFloat(instr.gpr20.Value() + lod_offset); regs.GetRegisterAsFloat(instr.gpr20.Value() + lod_offset);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
");");
} else { } else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8); const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = const std::string y =
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
} }
} else { } else {
if (depth_compare) { if (depth_compare) {
@ -2813,11 +2810,12 @@ private:
const std::string y = const std::string y =
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20); const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
");");
} else { } else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8); const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20); const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
} }
} }
} }
@ -2827,7 +2825,7 @@ private:
const std::string x = regs.GetRegisterAsFloat(instr.gpr8); const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20); const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");"; shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
break; break;
} }
default: default:
@ -2837,42 +2835,37 @@ private:
// Fallback to interpreting as a 2D texture for now // Fallback to interpreting as a 2D texture for now
const std::string x = regs.GetRegisterAsFloat(instr.gpr8); const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20); const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D; texture_type = Tegra::Shader::TextureType::Texture2D;
is_array = false; is_array = false;
} }
const std::string sampler = const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare); GetSampler(instr.sampler, texture_type, is_array, depth_compare);
std::string texture;
std::string texture = [&]() {
switch (process_mode) { switch (process_mode) {
case Tegra::Shader::TextureProcessMode::None: { case Tegra::Shader::TextureProcessMode::None:
texture = "texture(" + sampler + ", coords)"; return "texture(" + sampler + ", coords)";
break; case Tegra::Shader::TextureProcessMode::LZ:
}
case Tegra::Shader::TextureProcessMode::LZ: {
if (depth_compare && is_array) { if (depth_compare && is_array) {
texture = "texture(" + sampler + ", coords)"; return "texture(" + sampler + ", coords)";
} else { } else {
texture = "textureLod(" + sampler + ", coords, 0.0)"; return "textureLod(" + sampler + ", coords, 0.0)";
} }
break; break;
} case Tegra::Shader::TextureProcessMode::LL:
case Tegra::Shader::TextureProcessMode::LL: { return "textureLod(" + sampler + ", coords, lod_value)";
texture = "textureLod(" + sampler + ", coords, " + lod_value + ')'; default:
break;
}
default: {
texture = "texture(" + sampler + ", coords)";
UNIMPLEMENTED_MSG("Unhandled texture process mode {}", UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
static_cast<u32>(instr.texs.GetTextureProcessMode())); static_cast<u32>(instr.texs.GetTextureProcessMode()));
return "texture(" + sampler + ", coords)";
} }
} }();
if (!depth_compare) { if (depth_compare) {
WriteTexsInstruction(instr, coord, texture); texture = "vec4(" + texture + ')';
} else {
WriteTexsInstruction(instr, coord, "vec4(" + texture + ')');
} }
WriteTexsInstruction(instr, texture);
break; break;
} }
case OpCode::Id::TLDS: { case OpCode::Id::TLDS: {
@ -2891,15 +2884,12 @@ private:
u32 extra_op_offset = 0; u32 extra_op_offset = 0;
// Scope to avoid variable name overlaps. ShaderScopedScope scope = shader.Scope();
shader.AddLine('{');
++shader.scope;
std::string coords;
switch (texture_type) { switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: { case Tegra::Shader::TextureType::Texture1D: {
const std::string x = regs.GetRegisterAsInteger(instr.gpr8); const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
coords = "float coords = " + x + ';'; shader.AddLine("float coords = " + x + ';');
break; break;
} }
case Tegra::Shader::TextureType::Texture2D: { case Tegra::Shader::TextureType::Texture2D: {
@ -2908,7 +2898,7 @@ private:
const std::string x = regs.GetRegisterAsInteger(instr.gpr8); const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
const std::string y = regs.GetRegisterAsInteger(instr.gpr20); const std::string y = regs.GetRegisterAsInteger(instr.gpr20);
// shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");"); // shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
coords = "ivec2 coords = ivec2(" + x + ", " + y + ");"; shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
extra_op_offset = 1; extra_op_offset = 1;
break; break;
} }
@ -2917,35 +2907,29 @@ private:
} }
const std::string sampler = const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false); GetSampler(instr.sampler, texture_type, is_array, false);
std::string texture = "texelFetch(" + sampler + ", coords, 0)";
const std::string texture = [&]() {
switch (instr.tlds.GetTextureProcessMode()) { switch (instr.tlds.GetTextureProcessMode()) {
case Tegra::Shader::TextureProcessMode::LZ: { case Tegra::Shader::TextureProcessMode::LZ:
texture = "texelFetch(" + sampler + ", coords, 0)"; return "texelFetch(" + sampler + ", coords, 0)";
break; case Tegra::Shader::TextureProcessMode::LL:
}
case Tegra::Shader::TextureProcessMode::LL: {
shader.AddLine( shader.AddLine(
"float lod = " + "float lod = " +
regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';'); regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';');
texture = "texelFetch(" + sampler + ", coords, lod)"; return "texelFetch(" + sampler + ", coords, lod)";
break; default:
}
default: {
texture = "texelFetch(" + sampler + ", coords, 0)";
UNIMPLEMENTED_MSG("Unhandled texture process mode {}", UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
static_cast<u32>(instr.tlds.GetTextureProcessMode())); static_cast<u32>(instr.tlds.GetTextureProcessMode()));
return "texelFetch(" + sampler + ", coords, 0)";
} }
} }();
WriteTexsInstruction(instr, coords, texture);
--shader.scope; WriteTexsInstruction(instr, texture);
shader.AddLine('}');
break; break;
} }
case OpCode::Id::TLD4: { case OpCode::Id::TLD4: {
ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D); ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tld4.array == 0); ASSERT(instr.tld4.array == 0);
std::string coord;
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP), UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented"); "NODEP is not implemented");
@ -2962,10 +2946,7 @@ private:
if (depth_compare) if (depth_compare)
num_coordinates += 1; num_coordinates += 1;
// Add an extra scope and declare the texture coords inside to prevent const auto scope = shader.Scope();
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
switch (num_coordinates) { switch (num_coordinates) {
case 2: { case 2: {
@ -2996,23 +2977,19 @@ private:
const std::string texture = "textureGather(" + sampler + ", coords, " + const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')'; std::to_string(instr.tld4.component) + ')';
if (!depth_compare) { if (depth_compare) {
shader.AddLine("vec4 texture_tmp = " + texture + ';'); regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} else {
std::size_t dest_elem{}; std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) { for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) { if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components // Skip disabled components
continue; continue;
} }
regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false, regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
dest_elem);
++dest_elem; ++dest_elem;
} }
} else {
regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
} }
--shader.scope;
shader.AddLine('}');
break; break;
} }
case OpCode::Id::TLD4S: { case OpCode::Id::TLD4S: {
@ -3023,10 +3000,7 @@ private:
instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI), instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented"); "AOFFI is not implemented");
// Scope to avoid variable name overlaps. const auto scope = shader.Scope();
shader.AddLine('{');
++shader.scope;
std::string coords;
const bool depth_compare = const bool depth_compare =
instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC); instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
@ -3035,33 +3009,29 @@ private:
// TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction. // TODO(Subv): Figure out how the sampler type is encoded in the TLD4S instruction.
const std::string sampler = GetSampler( const std::string sampler = GetSampler(
instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare); instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare);
if (!depth_compare) { if (depth_compare) {
coords = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
} else {
// Note: TLD4S coordinate encoding works just like TEXS's // Note: TLD4S coordinate encoding works just like TEXS's
const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coords = "vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");"; shader.AddLine("vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");");
}
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
if (!depth_compare) {
WriteTexsInstruction(instr, coords, texture);
} else { } else {
WriteTexsInstruction(instr, coords, "vec4(" + texture + ')'); shader.AddLine("vec2 coords = vec2(" + op_a + ", " + op_b + ");");
} }
--shader.scope; std::string texture = "textureGather(" + sampler + ", coords, " +
shader.AddLine('}'); std::to_string(instr.tld4s.component) + ')';
if (depth_compare) {
texture = "vec4(" + texture + ')';
}
WriteTexsInstruction(instr, texture);
break; break;
} }
case OpCode::Id::TXQ: { case OpCode::Id::TXQ: {
UNIMPLEMENTED_IF_MSG(instr.txq.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP), UNIMPLEMENTED_IF_MSG(instr.txq.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented"); "NODEP is not implemented");
++shader.scope; const auto scope = shader.Scope();
shader.AddLine('{');
// TODO: the new commits on the texture refactor, change the way samplers work. // TODO: The new commits on the texture refactor, change the way samplers work.
// Sadly, not all texture instructions specify the type of texture their sampler // Sadly, not all texture instructions specify the type of texture their sampler
// uses. This must be fixed at a later instance. // uses. This must be fixed at a later instance.
const std::string sampler = const std::string sampler =
@ -3072,7 +3042,8 @@ private:
regs.GetRegisterAsInteger(instr.gpr8) + ')'; regs.GetRegisterAsInteger(instr.gpr8) + ')';
const std::string mip_level = "textureQueryLevels(" + sampler + ')'; const std::string mip_level = "textureQueryLevels(" + sampler + ')';
shader.AddLine("ivec2 sizes = " + texture + ';'); shader.AddLine("ivec2 sizes = " + texture + ';');
regs.SetRegisterToInteger(instr.gpr0, true, 0, "sizes.x", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 0, true, 0, "sizes.x", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 1, true, 0, "sizes.y", 1, 1); regs.SetRegisterToInteger(instr.gpr0.Value() + 1, true, 0, "sizes.y", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 2, true, 0, "0", 1, 1); regs.SetRegisterToInteger(instr.gpr0.Value() + 2, true, 0, "0", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 3, true, 0, mip_level, 1, 1); regs.SetRegisterToInteger(instr.gpr0.Value() + 3, true, 0, mip_level, 1, 1);
@ -3083,8 +3054,6 @@ private:
static_cast<u32>(instr.txq.query_type.Value())); static_cast<u32>(instr.txq.query_type.Value()));
} }
} }
--shader.scope;
shader.AddLine('}');
break; break;
} }
case OpCode::Id::TMML: { case OpCode::Id::TMML: {
@ -3099,17 +3068,18 @@ private:
const std::string sampler = const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false); GetSampler(instr.sampler, texture_type, is_array, false);
// TODO: add coordinates for different samplers once other texture types are const auto scope = shader.Scope();
// TODO: Add coordinates for different samplers once other texture types are
// implemented. // implemented.
std::string coord;
switch (texture_type) { switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: { case Tegra::Shader::TextureType::Texture1D: {
coord = "float coords = " + x + ';'; shader.AddLine("float coords = " + x + ';');
break; break;
} }
case Tegra::Shader::TextureType::Texture2D: { case Tegra::Shader::TextureType::Texture2D: {
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
break; break;
} }
default: default:
@ -3117,22 +3087,15 @@ private:
// Fallback to interpreting as a 2D texture for now // Fallback to interpreting as a 2D texture for now
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1); const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");"; shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
texture_type = Tegra::Shader::TextureType::Texture2D; texture_type = Tegra::Shader::TextureType::Texture2D;
} }
// Add an extra scope and declare the texture coords inside to prevent
// overwriting them in case they are used as outputs of the texs instruction.
shader.AddLine('{');
++shader.scope;
shader.AddLine(coord);
const std::string texture = "textureQueryLod(" + sampler + ", coords)"; const std::string texture = "textureQueryLod(" + sampler + ", coords)";
const std::string tmp = "vec2 tmp = " + texture + "*vec2(256.0, 256.0);"; shader.AddLine("vec2 tmp = " + texture + " * vec2(256.0, 256.0);");
shader.AddLine(tmp);
regs.SetRegisterToInteger(instr.gpr0, true, 0, "int(tmp.y)", 1, 1); regs.SetRegisterToInteger(instr.gpr0, true, 0, "int(tmp.y)", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 1, false, 0, "uint(tmp.x)", 1, 1); regs.SetRegisterToInteger(instr.gpr0.Value() + 1, false, 0, "uint(tmp.x)", 1, 1);
--shader.scope;
shader.AddLine('}');
break; break;
} }
default: { default: {