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-rw-r--r--src/video_core/renderer_opengl/gl_shader_decompiler.cpp463
1 files changed, 213 insertions, 250 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index 0c1632bd1..d235bfcd4 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -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 {
public:
- void AddLine(std::string_view text) {
+ void AddExpression(std::string_view text) {
DEBUG_ASSERT(scope >= 0);
if (!text.empty()) {
AppendIndentation();
}
shader_source += text;
+ }
+
+ void AddLine(std::string_view text) {
+ AddExpression(text);
AddNewLine();
}
@@ -228,6 +267,11 @@ public:
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;
private:
@@ -311,7 +355,7 @@ public:
// Default - do nothing
return value;
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) {
- shader.AddLine('{');
- ++shader.scope;
+ const auto scope = shader.Scope();
+
// This avoids optimizations of constant propagation and keeps the code as the original
// Sadly using the precise keyword causes "linking" errors on fragment shaders.
shader.AddLine("precise float tmp = " + src + ';');
shader.AddLine(dest + " = tmp;");
- --shader.scope;
- shader.AddLine('}');
} else {
shader.AddLine(dest + " = " + src + ';');
}
@@ -1301,15 +1343,7 @@ private:
regs.SetRegisterToInteger(dest, true, 0, result, 1, 1);
}
- void WriteTexsInstruction(const Instruction& instr, const std::string& coord,
- 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 + ';');
-
+ void WriteTexsInstruction(const Instruction& instr, const std::string& texture) {
// 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
@@ -1321,19 +1355,17 @@ private:
if (written_components < 2) {
// 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);
} else {
ASSERT(instr.texs.HasTwoDestinations());
// 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;
}
- --shader.scope;
- shader.AddLine('}');
}
static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) {
@@ -1356,12 +1388,10 @@ private:
* top.
*/
void EmitPushToFlowStack(u32 target) {
- shader.AddLine('{');
- ++shader.scope;
+ const auto scope = shader.Scope();
+
shader.AddLine("flow_stack[flow_stack_top] = " + std::to_string(target) + "u;");
shader.AddLine("flow_stack_top++;");
- --shader.scope;
- shader.AddLine('}');
}
/*
@@ -1369,13 +1399,11 @@ private:
* popped address and decrementing the stack top.
*/
void EmitPopFromFlowStack() {
- shader.AddLine('{');
- ++shader.scope;
+ const auto scope = shader.Scope();
+
shader.AddLine("flow_stack_top--;");
shader.AddLine("jmp_to = flow_stack[flow_stack_top];");
shader.AddLine("break;");
- --shader.scope;
- shader.AddLine('}');
}
/// 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_MSG(instr.generates_cc,
"Condition codes generation in I2F is not implemented");
-
- std::string op_a{};
+ std::string op_a;
if (instr.is_b_gpr) {
op_a =
@@ -2444,10 +2471,7 @@ private:
case OpCode::Id::LD_C: {
UNIMPLEMENTED_IF(instr.ld_c.unknown != 0);
- // Add an extra scope and declare the index register inside to prevent
- // overwriting it in case it is used as an output of the LD instruction.
- shader.AddLine("{");
- ++shader.scope;
+ const auto scope = shader.Scope();
shader.AddLine("uint index = (" + regs.GetRegisterAsInteger(instr.gpr8, 0, false) +
" / 4) & (MAX_CONSTBUFFER_ELEMENTS - 1);");
@@ -2473,19 +2497,13 @@ private:
UNIMPLEMENTED_MSG("Unhandled type: {}",
static_cast<unsigned>(instr.ld_c.type.Value()));
}
-
- --shader.scope;
- shader.AddLine("}");
break;
}
case OpCode::Id::LD_L: {
UNIMPLEMENTED_IF_MSG(instr.ld_l.unknown == 1, "LD_L Unhandled mode: {}",
static_cast<unsigned>(instr.ld_l.unknown.Value()));
- // Add an extra scope and declare the index register inside to prevent
- // overwriting it in case it is used as an output of the LD instruction.
- shader.AddLine('{');
- ++shader.scope;
+ const auto scope = shader.Scope();
std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " +
std::to_string(instr.smem_imm.Value()) + ')';
@@ -2502,9 +2520,6 @@ private:
UNIMPLEMENTED_MSG("LD_L Unhandled type: {}",
static_cast<unsigned>(instr.ldst_sl.type.Value()));
}
-
- --shader.scope;
- shader.AddLine('}');
break;
}
case OpCode::Id::ST_A: {
@@ -2539,10 +2554,7 @@ private:
UNIMPLEMENTED_IF_MSG(instr.st_l.unknown == 0, "ST_L Unhandled mode: {}",
static_cast<unsigned>(instr.st_l.unknown.Value()));
- // Add an extra scope and declare the index register inside to prevent
- // overwriting it in case it is used as an output of the LD instruction.
- shader.AddLine('{');
- ++shader.scope;
+ const auto scope = shader.Scope();
std::string op = '(' + regs.GetRegisterAsInteger(instr.gpr8, 0, false) + " + " +
std::to_string(instr.smem_imm.Value()) + ')';
@@ -2557,14 +2569,10 @@ private:
UNIMPLEMENTED_MSG("ST_L Unhandled type: {}",
static_cast<unsigned>(instr.ldst_sl.type.Value()));
}
-
- --shader.scope;
- shader.AddLine('}');
break;
}
case OpCode::Id::TEX: {
Tegra::Shader::TextureType texture_type{instr.tex.texture_type};
- std::string coord;
const bool is_array = instr.tex.array != 0;
UNIMPLEMENTED_IF_MSG(instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
@@ -2597,21 +2605,23 @@ private:
bool depth_compare_extra = false;
+ const auto scope = shader.Scope();
+
switch (num_coordinates) {
case 1: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index);
if (is_array) {
if (depth_compare) {
- coord = "vec3 coords = vec3(" + x + ", " + depth_value + ", " +
- array_elem + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + depth_value + ", " +
+ array_elem + ");");
} else {
- coord = "vec2 coords = vec2(" + x + ", " + array_elem + ");";
+ shader.AddLine("vec2 coords = vec2(" + x + ", " + array_elem + ");");
}
} else {
if (depth_compare) {
- coord = "vec2 coords = vec2(" + x + ", " + depth_value + ");";
+ shader.AddLine("vec2 coords = vec2(" + x + ", " + depth_value + ");");
} else {
- coord = "float coords = " + x + ';';
+ shader.AddLine("float coords = " + x + ';');
}
}
break;
@@ -2622,17 +2632,18 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 1);
if (is_array) {
if (depth_compare) {
- coord = "vec4 coords = vec4(" + x + ", " + y + ", " + depth_value +
- ", " + array_elem + ");";
+ shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " +
+ depth_value + ", " + array_elem + ");");
} else {
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + array_elem + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
+ array_elem + ");");
}
} else {
if (depth_compare) {
- coord =
- "vec3 coords = vec3(" + x + ", " + y + ", " + depth_value + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " +
+ depth_value + ");");
} else {
- coord = "vec2 coords = vec2(" + x + ", " + y + ");";
+ shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
}
}
break;
@@ -2645,14 +2656,14 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + start_index + 2);
if (is_array) {
depth_compare_extra = depth_compare;
- coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
- array_elem + ");";
+ shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
+ array_elem + ");");
} else {
if (depth_compare) {
- coord = "vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
- depth_value + ");";
+ shader.AddLine("vec4 coords = vec4(" + x + ", " + y + ", " + z + ", " +
+ depth_value + ");");
} else {
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
}
}
break;
@@ -2664,7 +2675,7 @@ private:
// Fallback to interpreting as a 2D texture for now
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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;
}
@@ -2673,79 +2684,61 @@ private:
// 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);
- std::string texture;
-
- switch (instr.tex.GetTextureProcessMode()) {
- case Tegra::Shader::TextureProcessMode::None: {
- if (!depth_compare_extra) {
- texture = "texture(" + sampler + ", coords)";
- } else {
- texture = "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- break;
- }
- case Tegra::Shader::TextureProcessMode::LZ: {
- if (!depth_compare_extra) {
- texture = "textureLod(" + sampler + ", coords, 0.0)";
- } else {
- texture = "texture(" + sampler + ", coords, " + depth_value + ')';
- }
- break;
- }
- case Tegra::Shader::TextureProcessMode::LB:
- case Tegra::Shader::TextureProcessMode::LBA: {
- // TODO: Figure if A suffix changes the equation at all.
- if (!depth_compare_extra) {
- texture = "texture(" + sampler + ", coords, " + lod_value + ')';
- } else {
- texture = "texture(" + sampler + ", coords, " + depth_value + ')';
- LOG_WARNING(HW_GPU,
- "OpenGL Limitation: can't set bias value along depth compare");
- }
- break;
- }
- case Tegra::Shader::TextureProcessMode::LL:
- case Tegra::Shader::TextureProcessMode::LLA: {
- // TODO: Figure if A suffix changes the equation at all.
- if (!depth_compare_extra) {
- texture = "textureLod(" + sampler + ", coords, " + lod_value + ')';
- } else {
- texture = "texture(" + sampler + ", coords, " + depth_value + ')';
- LOG_WARNING(HW_GPU,
- "OpenGL Limitation: can't set lod value along depth compare");
- }
- break;
- }
- default: {
- if (!depth_compare_extra) {
- texture = "texture(" + sampler + ", coords)";
- } else {
- texture = "texture(" + sampler + ", coords, " + depth_value + ')';
+ const std::string texture = [&]() {
+ switch (instr.tex.GetTextureProcessMode()) {
+ case Tegra::Shader::TextureProcessMode::None:
+ if (depth_compare_extra) {
+ return "texture(" + sampler + ", coords, " + depth_value + ')';
+ }
+ return "texture(" + sampler + ", coords)";
+ case Tegra::Shader::TextureProcessMode::LZ:
+ if (depth_compare_extra) {
+ return "texture(" + sampler + ", coords, " + depth_value + ')';
+ }
+ return "textureLod(" + sampler + ", coords, 0.0)";
+ case Tegra::Shader::TextureProcessMode::LB:
+ case Tegra::Shader::TextureProcessMode::LBA:
+ // TODO: Figure if A suffix changes the equation at all.
+ if (depth_compare_extra) {
+ LOG_WARNING(
+ HW_GPU,
+ "OpenGL Limitation: can't set bias value along depth compare");
+ return "texture(" + sampler + ", coords, " + depth_value + ')';
+ }
+ return "texture(" + sampler + ", coords, " + lod_value + ')';
+ case Tegra::Shader::TextureProcessMode::LL:
+ case Tegra::Shader::TextureProcessMode::LLA:
+ // TODO: Figure if A suffix changes the equation at all.
+ if (depth_compare_extra) {
+ LOG_WARNING(
+ HW_GPU,
+ "OpenGL Limitation: can't set lod value along depth compare");
+ return "texture(" + sampler + ", coords, " + depth_value + ')';
+ }
+ return "textureLod(" + sampler + ", coords, " + lod_value + ')';
+ default:
+ UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
+ static_cast<u32>(instr.tex.GetTextureProcessMode()));
+ if (depth_compare_extra) {
+ return "texture(" + sampler + ", coords, " + depth_value + ')';
+ }
+ return "texture(" + sampler + ", coords)";
}
- UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
- static_cast<u32>(instr.tex.GetTextureProcessMode()));
- }
- }
- 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{};
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
}
- regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false,
- dest_elem);
+ regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
++dest_elem;
}
- } else {
- regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
}
- --shader.scope;
- shader.AddLine('}');
break;
}
case OpCode::Id::TEXS: {
@@ -2755,26 +2748,28 @@ private:
UNIMPLEMENTED_IF_MSG(instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
+ const auto scope = shader.Scope();
+
const bool depth_compare =
instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
u32 num_coordinates = TextureCoordinates(texture_type);
const auto process_mode = instr.texs.GetTextureProcessMode();
- std::string lod_value;
- std::string coord;
u32 lod_offset = 0;
if (process_mode == Tegra::Shader::TextureProcessMode::LL) {
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;
} else {
- lod_value = regs.GetRegisterAsFloat(instr.gpr20);
+ shader.AddLine("float lod_value = " + regs.GetRegisterAsFloat(instr.gpr20) +
+ ';');
lod_offset = 1;
}
}
switch (num_coordinates) {
case 1: {
- coord = "float coords = " + regs.GetRegisterAsFloat(instr.gpr8) + ';';
+ shader.AddLine("float coords = " + regs.GetRegisterAsFloat(instr.gpr8) + ';');
break;
}
case 2: {
@@ -2784,13 +2779,14 @@ private:
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
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 {
const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + index + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + index +
+ ");");
}
} else {
if (lod_offset != 0) {
@@ -2800,12 +2796,13 @@ private:
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z =
regs.GetRegisterAsFloat(instr.gpr20.Value() + lod_offset);
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
+ ");");
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y =
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
- coord = "vec2 coords = vec2(" + x + ", " + y + ");";
+ shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
}
} else {
if (depth_compare) {
@@ -2813,11 +2810,12 @@ private:
const std::string y =
regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z +
+ ");");
} else {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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 y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const std::string z = regs.GetRegisterAsFloat(instr.gpr20);
- coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
+ shader.AddLine("vec3 coords = vec3(" + x + ", " + y + ", " + z + ");");
break;
}
default:
@@ -2837,42 +2835,37 @@ private:
// Fallback to interpreting as a 2D texture for now
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
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;
is_array = false;
}
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare);
- std::string texture;
- switch (process_mode) {
- case Tegra::Shader::TextureProcessMode::None: {
- texture = "texture(" + sampler + ", coords)";
- break;
- }
- case Tegra::Shader::TextureProcessMode::LZ: {
- if (depth_compare && is_array) {
- texture = "texture(" + sampler + ", coords)";
- } else {
- texture = "textureLod(" + sampler + ", coords, 0.0)";
+
+ std::string texture = [&]() {
+ switch (process_mode) {
+ case Tegra::Shader::TextureProcessMode::None:
+ return "texture(" + sampler + ", coords)";
+ case Tegra::Shader::TextureProcessMode::LZ:
+ if (depth_compare && is_array) {
+ return "texture(" + sampler + ", coords)";
+ } else {
+ return "textureLod(" + sampler + ", coords, 0.0)";
+ }
+ break;
+ case Tegra::Shader::TextureProcessMode::LL:
+ return "textureLod(" + sampler + ", coords, lod_value)";
+ default:
+ UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
+ static_cast<u32>(instr.texs.GetTextureProcessMode()));
+ return "texture(" + sampler + ", coords)";
}
- break;
- }
- case Tegra::Shader::TextureProcessMode::LL: {
- texture = "textureLod(" + sampler + ", coords, " + lod_value + ')';
- break;
- }
- default: {
- texture = "texture(" + sampler + ", coords)";
- UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
- static_cast<u32>(instr.texs.GetTextureProcessMode()));
- }
- }
- if (!depth_compare) {
- WriteTexsInstruction(instr, coord, texture);
- } else {
- WriteTexsInstruction(instr, coord, "vec4(" + texture + ')');
+ }();
+ if (depth_compare) {
+ texture = "vec4(" + texture + ')';
}
+ WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TLDS: {
@@ -2891,15 +2884,12 @@ private:
u32 extra_op_offset = 0;
- // Scope to avoid variable name overlaps.
- shader.AddLine('{');
- ++shader.scope;
- std::string coords;
+ ShaderScopedScope scope = shader.Scope();
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
- coords = "float coords = " + x + ';';
+ shader.AddLine("float coords = " + x + ';');
break;
}
case Tegra::Shader::TextureType::Texture2D: {
@@ -2908,7 +2898,7 @@ private:
const std::string x = regs.GetRegisterAsInteger(instr.gpr8);
const std::string y = regs.GetRegisterAsInteger(instr.gpr20);
// shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
- coords = "ivec2 coords = ivec2(" + x + ", " + y + ");";
+ shader.AddLine("ivec2 coords = ivec2(" + x + ", " + y + ");");
extra_op_offset = 1;
break;
}
@@ -2917,35 +2907,29 @@ private:
}
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false);
- std::string texture = "texelFetch(" + sampler + ", coords, 0)";
- switch (instr.tlds.GetTextureProcessMode()) {
- case Tegra::Shader::TextureProcessMode::LZ: {
- texture = "texelFetch(" + sampler + ", coords, 0)";
- break;
- }
- case Tegra::Shader::TextureProcessMode::LL: {
- shader.AddLine(
- "float lod = " +
- regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';');
- texture = "texelFetch(" + sampler + ", coords, lod)";
- break;
- }
- default: {
- texture = "texelFetch(" + sampler + ", coords, 0)";
- UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
- static_cast<u32>(instr.tlds.GetTextureProcessMode()));
- }
- }
- WriteTexsInstruction(instr, coords, texture);
- --shader.scope;
- shader.AddLine('}');
+ const std::string texture = [&]() {
+ switch (instr.tlds.GetTextureProcessMode()) {
+ case Tegra::Shader::TextureProcessMode::LZ:
+ return "texelFetch(" + sampler + ", coords, 0)";
+ case Tegra::Shader::TextureProcessMode::LL:
+ shader.AddLine(
+ "float lod = " +
+ regs.GetRegisterAsInteger(instr.gpr20.Value() + extra_op_offset) + ';');
+ return "texelFetch(" + sampler + ", coords, lod)";
+ default:
+ UNIMPLEMENTED_MSG("Unhandled texture process mode {}",
+ static_cast<u32>(instr.tlds.GetTextureProcessMode()));
+ return "texelFetch(" + sampler + ", coords, 0)";
+ }
+ }();
+
+ WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TLD4: {
ASSERT(instr.tld4.texture_type == Tegra::Shader::TextureType::Texture2D);
ASSERT(instr.tld4.array == 0);
- std::string coord;
UNIMPLEMENTED_IF_MSG(instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
@@ -2962,10 +2946,7 @@ private:
if (depth_compare)
num_coordinates += 1;
- // 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;
+ const auto scope = shader.Scope();
switch (num_coordinates) {
case 2: {
@@ -2996,23 +2977,19 @@ private:
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')';
- 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{};
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
}
- regs.SetRegisterToFloat(instr.gpr0, elem, "texture_tmp", 1, 4, false,
- dest_elem);
+ regs.SetRegisterToFloat(instr.gpr0, elem, texture, 1, 4, false, dest_elem);
++dest_elem;
}
- } else {
- regs.SetRegisterToFloat(instr.gpr0, 0, texture, 1, 1, false);
}
- --shader.scope;
- shader.AddLine('}');
break;
}
case OpCode::Id::TLD4S: {
@@ -3023,10 +3000,7 @@ private:
instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented");
- // Scope to avoid variable name overlaps.
- shader.AddLine('{');
- ++shader.scope;
- std::string coords;
+ const auto scope = shader.Scope();
const bool depth_compare =
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.
const std::string sampler = GetSampler(
instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare);
- if (!depth_compare) {
- coords = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
- } else {
+ if (depth_compare) {
// Note: TLD4S coordinate encoding works just like TEXS's
const std::string op_y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
- coords = "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);
+ shader.AddLine("vec3 coords = vec3(" + op_a + ", " + op_y + ", " + op_b + ");");
} else {
- WriteTexsInstruction(instr, coords, "vec4(" + texture + ')');
+ shader.AddLine("vec2 coords = vec2(" + op_a + ", " + op_b + ");");
}
- --shader.scope;
- shader.AddLine('}');
+ std::string texture = "textureGather(" + sampler + ", coords, " +
+ std::to_string(instr.tld4s.component) + ')';
+ if (depth_compare) {
+ texture = "vec4(" + texture + ')';
+ }
+ WriteTexsInstruction(instr, texture);
break;
}
case OpCode::Id::TXQ: {
UNIMPLEMENTED_IF_MSG(instr.txq.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
- ++shader.scope;
- shader.AddLine('{');
- // TODO: the new commits on the texture refactor, change the way samplers work.
+ const auto scope = shader.Scope();
+
+ // 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
// uses. This must be fixed at a later instance.
const std::string sampler =
@@ -3072,7 +3042,8 @@ private:
regs.GetRegisterAsInteger(instr.gpr8) + ')';
const std::string mip_level = "textureQueryLevels(" + sampler + ')';
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() + 2, true, 0, "0", 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()));
}
}
- --shader.scope;
- shader.AddLine('}');
break;
}
case OpCode::Id::TMML: {
@@ -3099,17 +3068,18 @@ private:
const std::string sampler =
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.
- std::string coord;
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
- coord = "float coords = " + x + ';';
+ shader.AddLine("float coords = " + x + ';');
break;
}
case Tegra::Shader::TextureType::Texture2D: {
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
- coord = "vec2 coords = vec2(" + x + ", " + y + ");";
+ shader.AddLine("vec2 coords = vec2(" + x + ", " + y + ");");
break;
}
default:
@@ -3117,22 +3087,15 @@ private:
// Fallback to interpreting as a 2D texture for now
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;
}
- // 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 tmp = "vec2 tmp = " + texture + "*vec2(256.0, 256.0);";
- shader.AddLine(tmp);
+ shader.AddLine("vec2 tmp = " + texture + " * vec2(256.0, 256.0);");
regs.SetRegisterToInteger(instr.gpr0, true, 0, "int(tmp.y)", 1, 1);
regs.SetRegisterToInteger(instr.gpr0.Value() + 1, false, 0, "uint(tmp.x)", 1, 1);
- --shader.scope;
- shader.AddLine('}');
break;
}
default: {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 23:26:13 +0100