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Pica: Use a union for PicaShaderConfig

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This commit is contained in:
Jannik Vogel 2016-05-01 23:28:39 +02:00
parent 5fc8eb227a
commit f74652d2fe
3 changed files with 131 additions and 117 deletions
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168
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -39,17 +39,24 @@ struct ScreenInfo;
* directly accessing Pica registers. This should reduce the risk of bugs in shader generation where
* Pica state is not being captured in the shader cache key, thereby resulting in (what should be)
* two separate shaders sharing the same key.
*
* We use a union because "implicitly-defined copy/move constructor for a union X copies the object representation of X."
* and "implicitly-defined copy assignment operator for a union X copies the object representation (3.9) of X."
* = Bytewise copy instead of memberwise copy.
* This is important because the padding bytes are included in the hash and comparison between objects.
*/
struct PicaShaderConfig {
union PicaShaderConfig {
/// Construct a PicaShaderConfig with the current Pica register configuration.
static PicaShaderConfig CurrentConfig() {
PicaShaderConfig res;
std::memset(&res, 0, sizeof(PicaShaderConfig));
auto& state = res.state;
std::memset(&state, 0, sizeof(PicaShaderConfig::State));
const auto& regs = Pica::g_state.regs;
res.alpha_test_func = regs.output_merger.alpha_test.enable ?
state.alpha_test_func = regs.output_merger.alpha_test.enable ?
regs.output_merger.alpha_test.func.Value() : Pica::Regs::CompareFunc::Always;
// Copy relevant tev stages fields.
@ -59,86 +66,84 @@ struct PicaShaderConfig {
DEBUG_ASSERT(res.tev_stages.size() == tev_stages.size());
for (size_t i = 0; i < tev_stages.size(); i++) {
const auto& tev_stage = tev_stages[i];
res.tev_stages[i].sources_raw = tev_stage.sources_raw;
res.tev_stages[i].modifiers_raw = tev_stage.modifiers_raw;
res.tev_stages[i].ops_raw = tev_stage.ops_raw;
res.tev_stages[i].scales_raw = tev_stage.scales_raw;
state.tev_stages[i].sources_raw = tev_stage.sources_raw;
state.tev_stages[i].modifiers_raw = tev_stage.modifiers_raw;
state.tev_stages[i].ops_raw = tev_stage.ops_raw;
state.tev_stages[i].scales_raw = tev_stage.scales_raw;
}
res.combiner_buffer_input =
state.combiner_buffer_input =
regs.tev_combiner_buffer_input.update_mask_rgb.Value() |
regs.tev_combiner_buffer_input.update_mask_a.Value() << 4;
// Fragment lighting
res.lighting.enable = !regs.lighting.disable;
res.lighting.src_num = regs.lighting.num_lights + 1;
state.lighting.enable = !regs.lighting.disable;
state.lighting.src_num = regs.lighting.num_lights + 1;
for (unsigned light_index = 0; light_index < res.lighting.src_num; ++light_index) {
for (unsigned light_index = 0; light_index < state.lighting.src_num; ++light_index) {
unsigned num = regs.lighting.light_enable.GetNum(light_index);
const auto& light = regs.lighting.light[num];
res.lighting.light[light_index].num = num;
res.lighting.light[light_index].directional = light.directional != 0;
res.lighting.light[light_index].two_sided_diffuse = light.two_sided_diffuse != 0;
res.lighting.light[light_index].dist_atten_enable = !regs.lighting.IsDistAttenDisabled(num);
res.lighting.light[light_index].dist_atten_bias = Pica::float20::FromRaw(light.dist_atten_bias).ToFloat32();
res.lighting.light[light_index].dist_atten_scale = Pica::float20::FromRaw(light.dist_atten_scale).ToFloat32();
state.lighting.light[light_index].num = num;
state.lighting.light[light_index].directional = light.directional != 0;
state.lighting.light[light_index].two_sided_diffuse = light.two_sided_diffuse != 0;
state.lighting.light[light_index].dist_atten_enable = !regs.lighting.IsDistAttenDisabled(num);
state.lighting.light[light_index].dist_atten_bias = Pica::float20::FromRaw(light.dist_atten_bias).ToFloat32();
state.lighting.light[light_index].dist_atten_scale = Pica::float20::FromRaw(light.dist_atten_scale).ToFloat32();
}
res.lighting.lut_d0.enable = regs.lighting.disable_lut_d0 == 0;
res.lighting.lut_d0.abs_input = regs.lighting.abs_lut_input.disable_d0 == 0;
res.lighting.lut_d0.type = regs.lighting.lut_input.d0.Value();
res.lighting.lut_d0.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d0);
state.lighting.lut_d0.enable = regs.lighting.disable_lut_d0 == 0;
state.lighting.lut_d0.abs_input = regs.lighting.abs_lut_input.disable_d0 == 0;
state.lighting.lut_d0.type = regs.lighting.lut_input.d0.Value();
state.lighting.lut_d0.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d0);
res.lighting.lut_d1.enable = regs.lighting.disable_lut_d1 == 0;
res.lighting.lut_d1.abs_input = regs.lighting.abs_lut_input.disable_d1 == 0;
res.lighting.lut_d1.type = regs.lighting.lut_input.d1.Value();
res.lighting.lut_d1.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d1);
state.lighting.lut_d1.enable = regs.lighting.disable_lut_d1 == 0;
state.lighting.lut_d1.abs_input = regs.lighting.abs_lut_input.disable_d1 == 0;
state.lighting.lut_d1.type = regs.lighting.lut_input.d1.Value();
state.lighting.lut_d1.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.d1);
res.lighting.lut_fr.enable = regs.lighting.disable_lut_fr == 0;
res.lighting.lut_fr.abs_input = regs.lighting.abs_lut_input.disable_fr == 0;
res.lighting.lut_fr.type = regs.lighting.lut_input.fr.Value();
res.lighting.lut_fr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.fr);
state.lighting.lut_fr.enable = regs.lighting.disable_lut_fr == 0;
state.lighting.lut_fr.abs_input = regs.lighting.abs_lut_input.disable_fr == 0;
state.lighting.lut_fr.type = regs.lighting.lut_input.fr.Value();
state.lighting.lut_fr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.fr);
res.lighting.lut_rr.enable = regs.lighting.disable_lut_rr == 0;
res.lighting.lut_rr.abs_input = regs.lighting.abs_lut_input.disable_rr == 0;
res.lighting.lut_rr.type = regs.lighting.lut_input.rr.Value();
res.lighting.lut_rr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rr);
state.lighting.lut_rr.enable = regs.lighting.disable_lut_rr == 0;
state.lighting.lut_rr.abs_input = regs.lighting.abs_lut_input.disable_rr == 0;
state.lighting.lut_rr.type = regs.lighting.lut_input.rr.Value();
state.lighting.lut_rr.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rr);
res.lighting.lut_rg.enable = regs.lighting.disable_lut_rg == 0;
res.lighting.lut_rg.abs_input = regs.lighting.abs_lut_input.disable_rg == 0;
res.lighting.lut_rg.type = regs.lighting.lut_input.rg.Value();
res.lighting.lut_rg.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rg);
state.lighting.lut_rg.enable = regs.lighting.disable_lut_rg == 0;
state.lighting.lut_rg.abs_input = regs.lighting.abs_lut_input.disable_rg == 0;
state.lighting.lut_rg.type = regs.lighting.lut_input.rg.Value();
state.lighting.lut_rg.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rg);
res.lighting.lut_rb.enable = regs.lighting.disable_lut_rb == 0;
res.lighting.lut_rb.abs_input = regs.lighting.abs_lut_input.disable_rb == 0;
res.lighting.lut_rb.type = regs.lighting.lut_input.rb.Value();
res.lighting.lut_rb.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rb);
state.lighting.lut_rb.enable = regs.lighting.disable_lut_rb == 0;
state.lighting.lut_rb.abs_input = regs.lighting.abs_lut_input.disable_rb == 0;
state.lighting.lut_rb.type = regs.lighting.lut_input.rb.Value();
state.lighting.lut_rb.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.rb);
res.lighting.config = regs.lighting.config;
res.lighting.fresnel_selector = regs.lighting.fresnel_selector;
res.lighting.bump_mode = regs.lighting.bump_mode;
res.lighting.bump_selector = regs.lighting.bump_selector;
res.lighting.bump_renorm = regs.lighting.disable_bump_renorm == 0;
res.lighting.clamp_highlights = regs.lighting.clamp_highlights != 0;
state.lighting.config = regs.lighting.config;
state.lighting.fresnel_selector = regs.lighting.fresnel_selector;
state.lighting.bump_mode = regs.lighting.bump_mode;
state.lighting.bump_selector = regs.lighting.bump_selector;
state.lighting.bump_renorm = regs.lighting.disable_bump_renorm == 0;
state.lighting.clamp_highlights = regs.lighting.clamp_highlights != 0;
return res;
}
bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const {
return (stage_index < 4) && (combiner_buffer_input & (1 << stage_index));
return (stage_index < 4) && (state.combiner_buffer_input & (1 << stage_index));
}
bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const {
return (stage_index < 4) && ((combiner_buffer_input >> 4) & (1 << stage_index));
return (stage_index < 4) && ((state.combiner_buffer_input >> 4) & (1 << stage_index));
}
bool operator ==(const PicaShaderConfig& o) const {
return std::memcmp(this, &o, sizeof(PicaShaderConfig)) == 0;
return std::memcmp(&state, &o.state, sizeof(PicaShaderConfig::State)) == 0;
};
Pica::Regs::CompareFunc alpha_test_func;
// NOTE: MSVC15 (Update 2) doesn't think `delete`'d constructors and operators are TC.
// This makes BitField not TC when used in a union or struct so we have to resort
// to this ugly hack.
@ -159,40 +164,45 @@ struct PicaShaderConfig {
return stage;
}
};
std::array<TevStageConfigRaw, 6> tev_stages;
u8 combiner_buffer_input;
struct {
struct {
unsigned num;
bool directional;
bool two_sided_diffuse;
bool dist_atten_enable;
GLfloat dist_atten_scale;
GLfloat dist_atten_bias;
} light[8];
struct State {
bool enable;
unsigned src_num;
Pica::Regs::LightingBumpMode bump_mode;
unsigned bump_selector;
bool bump_renorm;
bool clamp_highlights;
Pica::Regs::LightingConfig config;
Pica::Regs::LightingFresnelSelector fresnel_selector;
Pica::Regs::CompareFunc alpha_test_func;
std::array<TevStageConfigRaw, 6> tev_stages;
u8 combiner_buffer_input;
struct {
struct {
unsigned num;
bool directional;
bool two_sided_diffuse;
bool dist_atten_enable;
GLfloat dist_atten_scale;
GLfloat dist_atten_bias;
} light[8];
bool enable;
bool abs_input;
Pica::Regs::LightingLutInput type;
float scale;
} lut_d0, lut_d1, lut_fr, lut_rr, lut_rg, lut_rb;
} lighting;
unsigned src_num;
Pica::Regs::LightingBumpMode bump_mode;
unsigned bump_selector;
bool bump_renorm;
bool clamp_highlights;
Pica::Regs::LightingConfig config;
Pica::Regs::LightingFresnelSelector fresnel_selector;
struct {
bool enable;
bool abs_input;
Pica::Regs::LightingLutInput type;
float scale;
} lut_d0, lut_d1, lut_fr, lut_rr, lut_rg, lut_rb;
} lighting;
} state;
};
#if (__GNUC__ >= 5) || defined(__clang__) || defined(_MSC_VER)
static_assert(std::is_trivially_copyable<PicaShaderConfig>::value, "PicaShaderConfig must be trivially copyable");
static_assert(std::is_trivially_copyable<PicaShaderConfig::State>::value, "PicaShaderConfig::State must be trivially copyable");
#endif
namespace std {
@ -200,7 +210,7 @@ namespace std {
template <>
struct hash<PicaShaderConfig> {
size_t operator()(const PicaShaderConfig& k) const {
return Common::ComputeHash64(&k, sizeof(PicaShaderConfig));
return Common::ComputeHash64(&k.state, sizeof(PicaShaderConfig::State));
}
};

78
src/video_core/renderer_opengl/gl_shader_gen.cpp
View file

@ -287,7 +287,7 @@ static void AppendAlphaTestCondition(std::string& out, Regs::CompareFunc func) {
/// Writes the code to emulate the specified TEV stage
static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsigned index) {
const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.tev_stages[index]);
const auto stage = static_cast<const Pica::Regs::TevStageConfig>(config.state.tev_stages[index]);
if (!IsPassThroughTevStage(stage)) {
std::string index_name = std::to_string(index);
@ -331,6 +331,8 @@ static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsi
/// Writes the code to emulate fragment lighting
static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
const auto& lighting = config.state.lighting;
// Define lighting globals
out += "vec4 diffuse_sum = vec4(0.0, 0.0, 0.0, 1.0);\n"
"vec4 specular_sum = vec4(0.0, 0.0, 0.0, 1.0);\n"
@ -338,17 +340,17 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
"vec3 refl_value = vec3(0.0);\n";
// Compute fragment normals
if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) {
if (lighting.bump_mode == Pica::Regs::LightingBumpMode::NormalMap) {
// Bump mapping is enabled using a normal map, read perturbation vector from the selected texture
std::string bump_selector = std::to_string(config.lighting.bump_selector);
std::string bump_selector = std::to_string(lighting.bump_selector);
out += "vec3 surface_normal = 2.0 * texture(tex[" + bump_selector + "], texcoord[" + bump_selector + "]).rgb - 1.0;\n";
// Recompute Z-component of perturbation if 'renorm' is enabled, this provides a higher precision result
if (config.lighting.bump_renorm) {
if (lighting.bump_renorm) {
std::string val = "(1.0 - (surface_normal.x*surface_normal.x + surface_normal.y*surface_normal.y))";
out += "surface_normal.z = sqrt(max(" + val + ", 0.0));\n";
}
} else if (config.lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) {
} else if (lighting.bump_mode == Pica::Regs::LightingBumpMode::TangentMap) {
// Bump mapping is enabled using a tangent map
LOG_CRITICAL(HW_GPU, "unimplemented bump mapping mode (tangent mapping)");
UNIMPLEMENTED();
@ -361,7 +363,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
out += "vec3 normal = normalize(quaternion_rotate(normquat, surface_normal));\n";
// Gets the index into the specified lookup table for specular lighting
auto GetLutIndex = [config](unsigned light_num, Regs::LightingLutInput input, bool abs) {
auto GetLutIndex = [&lighting](unsigned light_num, Regs::LightingLutInput input, bool abs) {
const std::string half_angle = "normalize(normalize(view) + light_vector)";
std::string index;
switch (input) {
@ -389,7 +391,7 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
if (abs) {
// LUT index is in the range of (0.0, 1.0)
index = config.lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)";
index = lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")" : "max(" + index + ", 0.f)";
return "(FLOAT_255 * clamp(" + index + ", 0.0, 1.0))";
} else {
// LUT index is in the range of (-1.0, 1.0)
@ -407,8 +409,8 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
};
// Write the code to emulate each enabled light
for (unsigned light_index = 0; light_index < config.lighting.src_num; ++light_index) {
const auto& light_config = config.lighting.light[light_index];
for (unsigned light_index = 0; light_index < lighting.src_num; ++light_index) {
const auto& light_config = lighting.light[light_index];
std::string light_src = "light_src[" + std::to_string(light_config.num) + "]";
// Compute light vector (directional or positional)
@ -432,39 +434,39 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
}
// If enabled, clamp specular component if lighting result is negative
std::string clamp_highlights = config.lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0";
std::string clamp_highlights = lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0";
// Specular 0 component
std::string d0_lut_value = "1.0";
if (config.lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Distribution0)) {
if (lighting.lut_d0.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Distribution0)) {
// Lookup specular "distribution 0" LUT value
std::string index = GetLutIndex(light_config.num, config.lighting.lut_d0.type, config.lighting.lut_d0.abs_input);
d0_lut_value = "(" + std::to_string(config.lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, index) + ")";
std::string index = GetLutIndex(light_config.num, lighting.lut_d0.type, lighting.lut_d0.abs_input);
d0_lut_value = "(" + std::to_string(lighting.lut_d0.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution0, index) + ")";
}
std::string specular_0 = "(" + d0_lut_value + " * " + light_src + ".specular_0)";
// If enabled, lookup ReflectRed value, otherwise, 1.0 is used
if (config.lighting.lut_rr.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectRed)) {
std::string index = GetLutIndex(light_config.num, config.lighting.lut_rr.type, config.lighting.lut_rr.abs_input);
std::string value = "(" + std::to_string(config.lighting.lut_rr.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectRed, index) + ")";
if (lighting.lut_rr.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectRed)) {
std::string index = GetLutIndex(light_config.num, lighting.lut_rr.type, lighting.lut_rr.abs_input);
std::string value = "(" + std::to_string(lighting.lut_rr.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectRed, index) + ")";
out += "refl_value.r = " + value + ";\n";
} else {
out += "refl_value.r = 1.0;\n";
}
// If enabled, lookup ReflectGreen value, otherwise, ReflectRed value is used
if (config.lighting.lut_rg.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectGreen)) {
std::string index = GetLutIndex(light_config.num, config.lighting.lut_rg.type, config.lighting.lut_rg.abs_input);
std::string value = "(" + std::to_string(config.lighting.lut_rg.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectGreen, index) + ")";
if (lighting.lut_rg.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectGreen)) {
std::string index = GetLutIndex(light_config.num, lighting.lut_rg.type, lighting.lut_rg.abs_input);
std::string value = "(" + std::to_string(lighting.lut_rg.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectGreen, index) + ")";
out += "refl_value.g = " + value + ";\n";
} else {
out += "refl_value.g = refl_value.r;\n";
}
// If enabled, lookup ReflectBlue value, otherwise, ReflectRed value is used
if (config.lighting.lut_rb.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::ReflectBlue)) {
std::string index = GetLutIndex(light_config.num, config.lighting.lut_rb.type, config.lighting.lut_rb.abs_input);
std::string value = "(" + std::to_string(config.lighting.lut_rb.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectBlue, index) + ")";
if (lighting.lut_rb.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::ReflectBlue)) {
std::string index = GetLutIndex(light_config.num, lighting.lut_rb.type, lighting.lut_rb.abs_input);
std::string value = "(" + std::to_string(lighting.lut_rb.scale) + " * " + GetLutValue(Regs::LightingSampler::ReflectBlue, index) + ")";
out += "refl_value.b = " + value + ";\n";
} else {
out += "refl_value.b = refl_value.r;\n";
@ -472,27 +474,27 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
// Specular 1 component
std::string d1_lut_value = "1.0";
if (config.lighting.lut_d1.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Distribution1)) {
if (lighting.lut_d1.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Distribution1)) {
// Lookup specular "distribution 1" LUT value
std::string index = GetLutIndex(light_config.num, config.lighting.lut_d1.type, config.lighting.lut_d1.abs_input);
d1_lut_value = "(" + std::to_string(config.lighting.lut_d1.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution1, index) + ")";
std::string index = GetLutIndex(light_config.num, lighting.lut_d1.type, lighting.lut_d1.abs_input);
d1_lut_value = "(" + std::to_string(lighting.lut_d1.scale) + " * " + GetLutValue(Regs::LightingSampler::Distribution1, index) + ")";
}
std::string specular_1 = "(" + d1_lut_value + " * refl_value * " + light_src + ".specular_1)";
// Fresnel
if (config.lighting.lut_fr.enable && Pica::Regs::IsLightingSamplerSupported(config.lighting.config, Pica::Regs::LightingSampler::Fresnel)) {
if (lighting.lut_fr.enable && Pica::Regs::IsLightingSamplerSupported(lighting.config, Pica::Regs::LightingSampler::Fresnel)) {
// Lookup fresnel LUT value
std::string index = GetLutIndex(light_config.num, config.lighting.lut_fr.type, config.lighting.lut_fr.abs_input);
std::string value = "(" + std::to_string(config.lighting.lut_fr.scale) + " * " + GetLutValue(Regs::LightingSampler::Fresnel, index) + ")";
std::string index = GetLutIndex(light_config.num, lighting.lut_fr.type, lighting.lut_fr.abs_input);
std::string value = "(" + std::to_string(lighting.lut_fr.scale) + " * " + GetLutValue(Regs::LightingSampler::Fresnel, index) + ")";
// Enabled for difffuse lighting alpha component
if (config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::PrimaryAlpha ||
config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
if (lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::PrimaryAlpha ||
lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
out += "diffuse_sum.a *= " + value + ";\n";
// Enabled for the specular lighting alpha component
if (config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::SecondaryAlpha ||
config.lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
if (lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::SecondaryAlpha ||
lighting.fresnel_selector == Pica::Regs::LightingFresnelSelector::Both)
out += "specular_sum.a *= " + value + ";\n";
}
@ -510,6 +512,8 @@ static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
}
std::string GenerateFragmentShader(const PicaShaderConfig& config) {
const auto& state = config.state;
std::string out = R"(
#version 330 core
#define NUM_TEV_STAGES 6
@ -555,24 +559,24 @@ vec4 secondary_fragment_color = vec4(0.0);
)";
// Do not do any sort of processing if it's obvious we're not going to pass the alpha test
if (config.alpha_test_func == Regs::CompareFunc::Never) {
if (state.alpha_test_func == Regs::CompareFunc::Never) {
out += "discard; }";
return out;
}
if (config.lighting.enable)
if (state.lighting.enable)
WriteLighting(out, config);
out += "vec4 combiner_buffer = vec4(0.0);\n";
out += "vec4 next_combiner_buffer = tev_combiner_buffer_color;\n";
out += "vec4 last_tex_env_out = vec4(0.0);\n";
for (size_t index = 0; index < config.tev_stages.size(); ++index)
for (size_t index = 0; index < state.tev_stages.size(); ++index)
WriteTevStage(out, config, (unsigned)index);
if (config.alpha_test_func != Regs::CompareFunc::Always) {
if (state.alpha_test_func != Regs::CompareFunc::Always) {
out += "if (";
AppendAlphaTestCondition(out, config.alpha_test_func);
AppendAlphaTestCondition(out, state.alpha_test_func);
out += ") discard;\n";
}

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

@ -6,7 +6,7 @@
#include <string>
struct PicaShaderConfig;
union PicaShaderConfig;
namespace GLShader {