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Implemented Depth Compare and Shadow Samplers

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This commit is contained in:
FernandoS27 2018-09-19 01:18:20 -04:00
parent f664437ae8
commit 752faff2bc
6 changed files with 223 additions and 64 deletions
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18
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -601,10 +601,13 @@ void RasterizerOpenGL::SamplerInfo::Create() {
sampler.Create();
mag_filter = min_filter = Tegra::Texture::TextureFilter::Linear;
wrap_u = wrap_v = wrap_p = Tegra::Texture::WrapMode::Wrap;
uses_depth_compare = false;
depth_compare_func = Tegra::Texture::DepthCompareFunc::Never;
// default is GL_LINEAR_MIPMAP_LINEAR
glSamplerParameteri(sampler.handle, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// Other attributes have correct defaults
glSamplerParameteri(sampler.handle, GL_TEXTURE_COMPARE_FUNC, GL_NEVER);
}
void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntry& config) {
@ -632,6 +635,21 @@ void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntr
glSamplerParameteri(s, GL_TEXTURE_WRAP_R, MaxwellToGL::WrapMode(wrap_p));
}
if (uses_depth_compare != (config.depth_compare_enabled == 1)) {
uses_depth_compare = (config.depth_compare_enabled == 1);
if (uses_depth_compare) {
glSamplerParameteri(s, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
} else {
glSamplerParameteri(s, GL_TEXTURE_COMPARE_MODE, GL_NONE);
}
}
if (depth_compare_func != config.depth_compare_func) {
depth_compare_func = config.depth_compare_func;
glSamplerParameteri(s, GL_TEXTURE_COMPARE_FUNC,
MaxwellToGL::DepthCompareFunc(depth_compare_func));
}
if (wrap_u == Tegra::Texture::WrapMode::Border || wrap_v == Tegra::Texture::WrapMode::Border ||
wrap_p == Tegra::Texture::WrapMode::Border) {
const GLvec4 new_border_color = {{config.border_color_r, config.border_color_g,

2
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -94,6 +94,8 @@ private:
Tegra::Texture::WrapMode wrap_u;
Tegra::Texture::WrapMode wrap_v;
Tegra::Texture::WrapMode wrap_p;
bool uses_depth_compare;
Tegra::Texture::DepthCompareFunc depth_compare_func;
GLvec4 border_color;
};

215
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -508,7 +508,7 @@ public:
/// Returns the GLSL sampler used for the input shader sampler, and creates a new one if
/// necessary.
std::string AccessSampler(const Sampler& sampler, Tegra::Shader::TextureType type,
bool is_array) {
bool is_array, bool is_shadow) {
const std::size_t offset = static_cast<std::size_t>(sampler.index.Value());
// If this sampler has already been used, return the existing mapping.
@ -517,13 +517,14 @@ public:
[&](const SamplerEntry& entry) { return entry.GetOffset() == offset; });
if (itr != used_samplers.end()) {
ASSERT(itr->GetType() == type && itr->IsArray() == is_array);
ASSERT(itr->GetType() == type && itr->IsArray() == is_array &&
itr->IsShadow() == is_shadow);
return itr->GetName();
}
// Otherwise create a new mapping for this sampler
const std::size_t next_index = used_samplers.size();
const SamplerEntry entry{stage, offset, next_index, type, is_array};
const SamplerEntry entry{stage, offset, next_index, type, is_array, is_shadow};
used_samplers.emplace_back(entry);
return entry.GetName();
}
@ -747,8 +748,9 @@ private:
}
/// Generates code representing a texture sampler.
std::string GetSampler(const Sampler& sampler, Tegra::Shader::TextureType type, bool is_array) {
return regs.AccessSampler(sampler, type, is_array);
std::string GetSampler(const Sampler& sampler, Tegra::Shader::TextureType type, bool is_array,
bool is_shadow) {
return regs.AccessSampler(sampler, type, is_array, is_shadow);
}
/**
@ -1002,6 +1004,24 @@ private:
shader.AddLine('}');
}
static u32 TextureCoordinates(Tegra::Shader::TextureType texture_type) {
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
return 1;
}
case Tegra::Shader::TextureType::Texture2D: {
return 2;
}
case Tegra::Shader::TextureType::TextureCube: {
return 3;
}
default:
LOG_CRITICAL(HW_GPU, "Unhandled texture type {}", static_cast<u32>(texture_type));
UNREACHABLE();
return 0;
}
}
/*
* Emits code to push the input target address to the SSY address stack, incrementing the stack
* top.
@ -1896,24 +1916,35 @@ private:
"NODEP is not implemented");
ASSERT_MSG(!instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented");
ASSERT_MSG(!instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC),
"DC is not implemented");
switch (texture_type) {
case Tegra::Shader::TextureType::Texture1D: {
const bool depth_compare =
instr.tex.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
u32 num_coordinates = TextureCoordinates(texture_type);
if (depth_compare)
num_coordinates += 1;
switch (num_coordinates) {
case 1: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
coord = "float coords = " + x + ';';
break;
}
case Tegra::Shader::TextureType::Texture2D: {
case 2: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
break;
}
case 3: {
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 + ");";
break;
}
default:
LOG_CRITICAL(HW_GPU, "Unhandled texture type {}",
static_cast<u32>(texture_type));
LOG_CRITICAL(HW_GPU, "Unhandled coordinates number {}",
static_cast<u32>(num_coordinates));
UNREACHABLE();
// Fallback to interpreting as a 2D texture for now
@ -1924,9 +1955,10 @@ private:
}
// TODO: make sure coordinates are always indexed to gpr8 and gpr20 is always bias
// or lod.
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20);
std::string op_c;
const std::string sampler = GetSampler(instr.sampler, texture_type, false);
const std::string sampler =
GetSampler(instr.sampler, texture_type, false, depth_compare);
// 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.
@ -1946,12 +1978,22 @@ private:
}
case Tegra::Shader::TextureProcessMode::LB:
case Tegra::Shader::TextureProcessMode::LBA: {
if (num_coordinates <= 2) {
op_c = regs.GetRegisterAsFloat(instr.gpr20);
} else {
op_c = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
}
// TODO: Figure if A suffix changes the equation at all.
texture = "texture(" + sampler + ", coords, " + op_c + ')';
break;
}
case Tegra::Shader::TextureProcessMode::LL:
case Tegra::Shader::TextureProcessMode::LLA: {
if (num_coordinates <= 2) {
op_c = regs.GetRegisterAsFloat(instr.gpr20);
} else {
op_c = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
}
// TODO: Figure if A suffix changes the equation at all.
texture = "textureLod(" + sampler + ", coords, " + op_c + ')';
break;
@ -1963,14 +2005,18 @@ private:
UNREACHABLE();
}
}
std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
if (!depth_compare) {
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, 1, 4, false, dest_elem);
++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("}");
@ -1983,11 +2029,15 @@ private:
ASSERT_MSG(!instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::NODEP),
"NODEP is not implemented");
ASSERT_MSG(!instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC),
"DC is not implemented");
switch (texture_type) {
case Tegra::Shader::TextureType::Texture2D: {
const bool depth_compare =
instr.texs.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
u32 num_coordinates = TextureCoordinates(texture_type);
if (depth_compare)
num_coordinates += 1;
switch (num_coordinates) {
case 2: {
if (is_array) {
const std::string index = regs.GetRegisterAsInteger(instr.gpr8);
const std::string x = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
@ -2000,17 +2050,25 @@ private:
}
break;
}
case Tegra::Shader::TextureType::TextureCube: {
ASSERT_MSG(!is_array, "Unimplemented");
std::string x = regs.GetRegisterAsFloat(instr.gpr8);
std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
std::string z = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
case 3: {
if (is_array) {
UNIMPLEMENTED_MSG("3-coordinate arrays not fully implemented");
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr20);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
texture_type = Tegra::Shader::TextureType::Texture2D;
is_array = false;
} else {
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 + ");";
}
break;
}
default:
LOG_CRITICAL(HW_GPU, "Unhandled texture type {}",
static_cast<u32>(texture_type));
LOG_CRITICAL(HW_GPU, "Unhandled coordinates number {}",
static_cast<u32>(num_coordinates));
UNREACHABLE();
// Fallback to interpreting as a 2D texture for now
@ -2020,9 +2078,9 @@ private:
texture_type = Tegra::Shader::TextureType::Texture2D;
is_array = false;
}
const std::string sampler = GetSampler(instr.sampler, texture_type, is_array);
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, depth_compare);
std::string texture;
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
switch (instr.texs.GetTextureProcessMode()) {
case Tegra::Shader::TextureProcessMode::None: {
texture = "texture(" + sampler + ", coords)";
@ -2033,6 +2091,7 @@ private:
break;
}
case Tegra::Shader::TextureProcessMode::LL: {
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr20.Value() + 1);
texture = "textureLod(" + sampler + ", coords, " + op_c + ')';
break;
}
@ -2043,7 +2102,11 @@ private:
UNREACHABLE();
}
}
WriteTexsInstruction(instr, coord, texture);
if (!depth_compare) {
WriteTexsInstruction(instr, coord, texture);
} else {
WriteTexsInstruction(instr, coord, "vec4(" + texture + ')');
}
break;
}
case OpCode::Id::TLDS: {
@ -2083,7 +2146,8 @@ private:
static_cast<u32>(texture_type));
UNREACHABLE();
}
const std::string sampler = GetSampler(instr.sampler, texture_type, is_array);
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false);
std::string texture = "texelFetch(" + sampler + ", coords, 0)";
const std::string op_c = regs.GetRegisterAsInteger(instr.gpr20.Value() + 1);
switch (instr.tlds.GetTextureProcessMode()) {
@ -2114,28 +2178,43 @@ private:
"NODEP is not implemented");
ASSERT_MSG(!instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented");
ASSERT_MSG(!instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC),
"DC is not implemented");
ASSERT_MSG(!instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::NDV),
"NDV is not implemented");
ASSERT_MSG(!instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::PTP),
"PTP is not implemented");
const bool depth_compare =
instr.tld4.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
auto texture_type = instr.tld4.texture_type.Value();
u32 num_coordinates = TextureCoordinates(texture_type);
if (depth_compare)
num_coordinates += 1;
switch (instr.tld4.texture_type) {
case Tegra::Shader::TextureType::Texture2D: {
switch (num_coordinates) {
case 2: {
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
break;
}
case 3: {
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.gpr8.Value() + 2);
coord = "vec3 coords = vec3(" + x + ", " + y + ", " + z + ");";
break;
}
default:
LOG_CRITICAL(HW_GPU, "Unhandled texture type {}",
static_cast<u32>(instr.tld4.texture_type.Value()));
LOG_CRITICAL(HW_GPU, "Unhandled coordinates number {}",
static_cast<u32>(num_coordinates));
UNREACHABLE();
const std::string x = regs.GetRegisterAsFloat(instr.gpr8);
const std::string y = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec2 coords = vec2(" + x + ", " + y + ");";
texture_type = Tegra::Shader::TextureType::Texture2D;
}
const std::string sampler =
GetSampler(instr.sampler, instr.tld4.texture_type, false);
GetSampler(instr.sampler, texture_type, false, depth_compare);
// 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("{");
@ -2143,15 +2222,18 @@ private:
shader.AddLine(coord);
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4.component) + ')';
std::size_t dest_elem{};
for (std::size_t elem = 0; elem < 4; ++elem) {
if (!instr.tex.IsComponentEnabled(elem)) {
// Skip disabled components
continue;
if (!depth_compare) {
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, 1, 4, false, dest_elem);
++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("}");
@ -2162,18 +2244,30 @@ private:
"NODEP is not implemented");
ASSERT_MSG(!instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::AOFFI),
"AOFFI is not implemented");
ASSERT_MSG(!instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC),
"DC is not implemented");
const bool depth_compare =
instr.tld4s.UsesMiscMode(Tegra::Shader::TextureMiscMode::DC);
const std::string op_a = regs.GetRegisterAsFloat(instr.gpr8);
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr20);
// 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);
const std::string coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
const std::string sampler = GetSampler(
instr.sampler, Tegra::Shader::TextureType::Texture2D, false, depth_compare);
std::string coord;
if (!depth_compare) {
coord = "vec2 coords = vec2(" + op_a + ", " + op_b + ");";
} else {
// Note: TLD4S coordinate encoding works just like TEXS's
const std::string op_c = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
coord = "vec3 coords = vec3(" + op_a + ", " + op_c + ", " + op_b + ");";
}
const std::string texture = "textureGather(" + sampler + ", coords, " +
std::to_string(instr.tld4s.component) + ')';
WriteTexsInstruction(instr, coord, texture);
if (!depth_compare) {
WriteTexsInstruction(instr, coord, texture);
} else {
WriteTexsInstruction(instr, coord, "vec4(" + texture + ')');
}
break;
}
case OpCode::Id::TXQ: {
@ -2184,7 +2278,7 @@ private:
// 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 =
GetSampler(instr.sampler, Tegra::Shader::TextureType::Texture2D, false);
GetSampler(instr.sampler, Tegra::Shader::TextureType::Texture2D, false, false);
switch (instr.txq.query_type) {
case Tegra::Shader::TextureQueryType::Dimension: {
const std::string texture = "textureQueryLevels(" + sampler + ')';
@ -2209,7 +2303,8 @@ private:
const std::string op_b = regs.GetRegisterAsFloat(instr.gpr8.Value() + 1);
const bool is_array = instr.tmml.array != 0;
auto texture_type = instr.tmml.texture_type.Value();
const std::string sampler = GetSampler(instr.sampler, texture_type, is_array);
const std::string sampler =
GetSampler(instr.sampler, texture_type, is_array, false);
// TODO: add coordinates for different samplers once other texture types are
// implemented.

14
src/video_core/renderer_opengl/gl_shader_gen.h
View file

@ -75,8 +75,9 @@ class SamplerEntry {
public:
SamplerEntry(Maxwell::ShaderStage stage, std::size_t offset, std::size_t index,
Tegra::Shader::TextureType type, bool is_array)
: offset(offset), stage(stage), sampler_index(index), type(type), is_array(is_array) {}
Tegra::Shader::TextureType type, bool is_array, bool is_shadow)
: offset(offset), stage(stage), sampler_index(index), type(type), is_array(is_array),
is_shadow(is_shadow) {}
std::size_t GetOffset() const {
return offset;
@ -117,6 +118,8 @@ public:
}
if (is_array)
glsl_type += "Array";
if (is_shadow)
glsl_type += "Shadow";
return glsl_type;
}
@ -128,6 +131,10 @@ public:
return is_array;
}
bool IsShadow() const {
return is_shadow;
}
u32 GetHash() const {
return (static_cast<u32>(stage) << 16) | static_cast<u32>(sampler_index);
}
@ -147,7 +154,8 @@ private:
Maxwell::ShaderStage stage; ///< Shader stage where this sampler was used.
std::size_t sampler_index; ///< Value used to index into the generated GLSL sampler array.
Tegra::Shader::TextureType type; ///< The type used to sample this texture (Texture2D, etc)
bool is_array; ///< Whether the texture is being sampled as an array texture or not.
bool is_array; ///< Whether the texture is being sampled as an array texture or not.
bool is_shadow; ///< Whether the texture is being sampled as a depth texture or not.
};
struct ShaderEntries {

25
src/video_core/renderer_opengl/maxwell_to_gl.h
View file

@ -159,6 +159,31 @@ inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
return {};
}
inline GLenum DepthCompareFunc(Tegra::Texture::DepthCompareFunc func) {
switch (func) {
case Tegra::Texture::DepthCompareFunc::Never:
return GL_NEVER;
case Tegra::Texture::DepthCompareFunc::Less:
return GL_LESS;
case Tegra::Texture::DepthCompareFunc::LessEqual:
return GL_LEQUAL;
case Tegra::Texture::DepthCompareFunc::Equal:
return GL_EQUAL;
case Tegra::Texture::DepthCompareFunc::NotEqual:
return GL_NOTEQUAL;
case Tegra::Texture::DepthCompareFunc::Greater:
return GL_GREATER;
case Tegra::Texture::DepthCompareFunc::GreaterEqual:
return GL_GEQUAL;
case Tegra::Texture::DepthCompareFunc::Always:
return GL_ALWAYS;
}
LOG_CRITICAL(Render_OpenGL, "Unimplemented texture depth compare function ={}",
static_cast<u32>(func));
UNREACHABLE();
return {};
}
inline GLenum BlendEquation(Maxwell::Blend::Equation equation) {
switch (equation) {
case Maxwell::Blend::Equation::Add:

13
src/video_core/textures/texture.h
View file

@ -227,6 +227,17 @@ enum class WrapMode : u32 {
MirrorOnceClampOGL = 7,
};
enum class DepthCompareFunc : u32 {
Never = 0,
Less = 1,
Equal = 2,
LessEqual = 3,
Greater = 4,
NotEqual = 5,
GreaterEqual = 6,
Always = 7,
};
enum class TextureFilter : u32 {
Nearest = 1,
Linear = 2,
@ -244,7 +255,7 @@ struct TSCEntry {
BitField<3, 3, WrapMode> wrap_v;
BitField<6, 3, WrapMode> wrap_p;
BitField<9, 1, u32> depth_compare_enabled;
BitField<10, 3, u32> depth_compare_func;
BitField<10, 3, DepthCompareFunc> depth_compare_func;
};
union {
BitField<0, 2, TextureFilter> mag_filter;