2015-10-06 04:33:47 +02:00
|
|
|
// Copyright 2015 Citra Emulator Project
|
|
|
|
// Licensed under GPLv2 or any later version
|
|
|
|
// Refer to the license.txt file included.
|
|
|
|
|
2016-04-30 17:34:51 +02:00
|
|
|
#include <array>
|
|
|
|
#include <cstddef>
|
2017-04-17 06:43:58 +02:00
|
|
|
#include <cstring>
|
2016-04-30 17:34:51 +02:00
|
|
|
#include "common/assert.h"
|
|
|
|
#include "common/bit_field.h"
|
|
|
|
#include "common/logging/log.h"
|
2017-01-29 00:12:09 +01:00
|
|
|
#include "video_core/regs_framebuffer.h"
|
|
|
|
#include "video_core/regs_lighting.h"
|
|
|
|
#include "video_core/regs_rasterizer.h"
|
|
|
|
#include "video_core/regs_texturing.h"
|
2015-10-06 04:33:47 +02:00
|
|
|
#include "video_core/renderer_opengl/gl_rasterizer.h"
|
2016-09-21 08:52:38 +02:00
|
|
|
#include "video_core/renderer_opengl/gl_shader_gen.h"
|
2016-04-30 17:34:51 +02:00
|
|
|
#include "video_core/renderer_opengl/gl_shader_util.h"
|
2015-10-06 04:33:47 +02:00
|
|
|
|
2017-01-29 00:12:09 +01:00
|
|
|
using Pica::FramebufferRegs;
|
2017-01-28 21:13:21 +01:00
|
|
|
using Pica::LightingRegs;
|
2017-01-29 00:12:09 +01:00
|
|
|
using Pica::RasterizerRegs;
|
|
|
|
using Pica::TexturingRegs;
|
|
|
|
using TevStageConfig = TexturingRegs::TevStageConfig;
|
2015-10-07 00:01:53 +02:00
|
|
|
|
2015-10-06 04:33:47 +02:00
|
|
|
namespace GLShader {
|
|
|
|
|
2017-04-17 06:50:56 +02:00
|
|
|
PicaShaderConfig PicaShaderConfig::BuildFromRegs(const Pica::Regs& regs) {
|
2017-04-17 06:43:58 +02:00
|
|
|
PicaShaderConfig res;
|
|
|
|
|
|
|
|
auto& state = res.state;
|
|
|
|
std::memset(&state, 0, sizeof(PicaShaderConfig::State));
|
|
|
|
|
|
|
|
state.scissor_test_mode = regs.rasterizer.scissor_test.mode;
|
|
|
|
|
|
|
|
state.depthmap_enable = regs.rasterizer.depthmap_enable;
|
|
|
|
|
|
|
|
state.alpha_test_func = regs.framebuffer.output_merger.alpha_test.enable
|
|
|
|
? regs.framebuffer.output_merger.alpha_test.func.Value()
|
|
|
|
: Pica::FramebufferRegs::CompareFunc::Always;
|
|
|
|
|
|
|
|
state.texture0_type = regs.texturing.texture0.type;
|
|
|
|
|
2017-05-05 14:29:35 +02:00
|
|
|
state.texture2_use_coord1 = regs.texturing.main_config.texture2_use_coord1 != 0;
|
2017-05-03 18:59:48 +02:00
|
|
|
|
2017-04-17 06:43:58 +02:00
|
|
|
// Copy relevant tev stages fields.
|
|
|
|
// We don't sync const_color here because of the high variance, it is a
|
|
|
|
// shader uniform instead.
|
|
|
|
const auto& tev_stages = regs.texturing.GetTevStages();
|
|
|
|
DEBUG_ASSERT(state.tev_stages.size() == tev_stages.size());
|
|
|
|
for (size_t i = 0; i < tev_stages.size(); i++) {
|
|
|
|
const auto& tev_stage = tev_stages[i];
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
state.fog_mode = regs.texturing.fog_mode;
|
|
|
|
state.fog_flip = regs.texturing.fog_flip != 0;
|
|
|
|
|
|
|
|
state.combiner_buffer_input = regs.texturing.tev_combiner_buffer_input.update_mask_rgb.Value() |
|
|
|
|
regs.texturing.tev_combiner_buffer_input.update_mask_a.Value()
|
|
|
|
<< 4;
|
|
|
|
|
|
|
|
// Fragment lighting
|
|
|
|
|
|
|
|
state.lighting.enable = !regs.lighting.disable;
|
|
|
|
state.lighting.src_num = regs.lighting.max_light_index + 1;
|
|
|
|
|
|
|
|
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];
|
|
|
|
state.lighting.light[light_index].num = num;
|
|
|
|
state.lighting.light[light_index].directional = light.config.directional != 0;
|
|
|
|
state.lighting.light[light_index].two_sided_diffuse = light.config.two_sided_diffuse != 0;
|
|
|
|
state.lighting.light[light_index].dist_atten_enable =
|
|
|
|
!regs.lighting.IsDistAttenDisabled(num);
|
2017-05-25 19:15:12 +02:00
|
|
|
state.lighting.light[light_index].spot_atten_enable =
|
|
|
|
!regs.lighting.IsSpotAttenDisabled(num);
|
2017-04-17 06:43:58 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
state.lighting.lut_d0.enable = regs.lighting.config1.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);
|
|
|
|
|
|
|
|
state.lighting.lut_d1.enable = regs.lighting.config1.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);
|
|
|
|
|
2017-05-25 19:15:12 +02:00
|
|
|
// this is a dummy field due to lack of the corresponding register
|
|
|
|
state.lighting.lut_sp.enable = true;
|
|
|
|
state.lighting.lut_sp.abs_input = regs.lighting.abs_lut_input.disable_sp == 0;
|
|
|
|
state.lighting.lut_sp.type = regs.lighting.lut_input.sp.Value();
|
|
|
|
state.lighting.lut_sp.scale = regs.lighting.lut_scale.GetScale(regs.lighting.lut_scale.sp);
|
|
|
|
|
2017-04-17 06:43:58 +02:00
|
|
|
state.lighting.lut_fr.enable = regs.lighting.config1.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);
|
|
|
|
|
|
|
|
state.lighting.lut_rr.enable = regs.lighting.config1.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);
|
|
|
|
|
|
|
|
state.lighting.lut_rg.enable = regs.lighting.config1.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);
|
|
|
|
|
|
|
|
state.lighting.lut_rb.enable = regs.lighting.config1.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);
|
|
|
|
|
|
|
|
state.lighting.config = regs.lighting.config0.config;
|
|
|
|
state.lighting.fresnel_selector = regs.lighting.config0.fresnel_selector;
|
|
|
|
state.lighting.bump_mode = regs.lighting.config0.bump_mode;
|
|
|
|
state.lighting.bump_selector = regs.lighting.config0.bump_selector;
|
|
|
|
state.lighting.bump_renorm = regs.lighting.config0.disable_bump_renorm == 0;
|
|
|
|
state.lighting.clamp_highlights = regs.lighting.config0.clamp_highlights != 0;
|
|
|
|
|
2017-05-05 14:25:04 +02:00
|
|
|
state.proctex.enable = regs.texturing.main_config.texture3_enable;
|
|
|
|
if (state.proctex.enable) {
|
|
|
|
state.proctex.coord = regs.texturing.main_config.texture3_coordinates;
|
|
|
|
state.proctex.u_clamp = regs.texturing.proctex.u_clamp;
|
|
|
|
state.proctex.v_clamp = regs.texturing.proctex.v_clamp;
|
|
|
|
state.proctex.color_combiner = regs.texturing.proctex.color_combiner;
|
|
|
|
state.proctex.alpha_combiner = regs.texturing.proctex.alpha_combiner;
|
|
|
|
state.proctex.separate_alpha = regs.texturing.proctex.separate_alpha;
|
|
|
|
state.proctex.noise_enable = regs.texturing.proctex.noise_enable;
|
|
|
|
state.proctex.u_shift = regs.texturing.proctex.u_shift;
|
|
|
|
state.proctex.v_shift = regs.texturing.proctex.v_shift;
|
|
|
|
state.proctex.lut_width = regs.texturing.proctex_lut.width;
|
|
|
|
state.proctex.lut_offset = regs.texturing.proctex_lut_offset;
|
|
|
|
state.proctex.lut_filter = regs.texturing.proctex_lut.filter;
|
|
|
|
}
|
|
|
|
|
2017-04-17 06:43:58 +02:00
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Detects if a TEV stage is configured to be skipped (to avoid generating unnecessary code)
|
2015-10-07 00:01:53 +02:00
|
|
|
static bool IsPassThroughTevStage(const TevStageConfig& stage) {
|
2016-09-18 02:38:01 +02:00
|
|
|
return (stage.color_op == TevStageConfig::Operation::Replace &&
|
|
|
|
stage.alpha_op == TevStageConfig::Operation::Replace &&
|
|
|
|
stage.color_source1 == TevStageConfig::Source::Previous &&
|
|
|
|
stage.alpha_source1 == TevStageConfig::Source::Previous &&
|
|
|
|
stage.color_modifier1 == TevStageConfig::ColorModifier::SourceColor &&
|
|
|
|
stage.alpha_modifier1 == TevStageConfig::AlphaModifier::SourceAlpha &&
|
|
|
|
stage.GetColorMultiplier() == 1 && stage.GetAlphaMultiplier() == 1);
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2017-05-26 10:47:30 +02:00
|
|
|
static std::string SampleTexture(const PicaShaderConfig& config, unsigned texture_unit) {
|
|
|
|
const auto& state = config.state;
|
|
|
|
switch (texture_unit) {
|
|
|
|
case 0:
|
|
|
|
// Only unit 0 respects the texturing type
|
|
|
|
switch (state.texture0_type) {
|
|
|
|
case TexturingRegs::TextureConfig::Texture2D:
|
|
|
|
return "texture(tex[0], texcoord[0])";
|
|
|
|
case TexturingRegs::TextureConfig::Projection2D:
|
|
|
|
return "textureProj(tex[0], vec3(texcoord[0], texcoord0_w))";
|
|
|
|
default:
|
|
|
|
LOG_CRITICAL(HW_GPU, "Unhandled texture type %x",
|
|
|
|
static_cast<int>(state.texture0_type));
|
|
|
|
UNIMPLEMENTED();
|
|
|
|
return "texture(tex[0], texcoord[0])";
|
|
|
|
}
|
|
|
|
case 1:
|
|
|
|
return "texture(tex[1], texcoord[1])";
|
|
|
|
case 2:
|
|
|
|
if (state.texture2_use_coord1)
|
|
|
|
return "texture(tex[2], texcoord[1])";
|
|
|
|
else
|
|
|
|
return "texture(tex[2], texcoord[2])";
|
|
|
|
case 3:
|
|
|
|
if (state.proctex.enable) {
|
|
|
|
return "ProcTex()";
|
|
|
|
} else {
|
|
|
|
LOG_ERROR(Render_OpenGL, "Using Texture3 without enabling it");
|
|
|
|
return "vec4(0.0)";
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
UNREACHABLE();
|
|
|
|
return "";
|
2017-05-03 18:59:48 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the specified TEV stage source component(s)
|
2016-09-18 02:38:01 +02:00
|
|
|
static void AppendSource(std::string& out, const PicaShaderConfig& config,
|
|
|
|
TevStageConfig::Source source, const std::string& index_name) {
|
2016-04-19 00:53:42 +02:00
|
|
|
const auto& state = config.state;
|
2015-10-07 00:01:53 +02:00
|
|
|
using Source = TevStageConfig::Source;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (source) {
|
|
|
|
case Source::PrimaryColor:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "primary_color";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::PrimaryFragmentColor:
|
2015-11-12 23:33:21 +01:00
|
|
|
out += "primary_fragment_color";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::SecondaryFragmentColor:
|
2015-11-15 05:23:08 +01:00
|
|
|
out += "secondary_fragment_color";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::Texture0:
|
2017-05-26 10:47:30 +02:00
|
|
|
out += SampleTexture(config, 0);
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::Texture1:
|
2017-05-26 10:47:30 +02:00
|
|
|
out += SampleTexture(config, 1);
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
2015-10-13 04:23:26 +02:00
|
|
|
case Source::Texture2:
|
2017-05-26 10:47:30 +02:00
|
|
|
out += SampleTexture(config, 2);
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
2017-05-05 14:25:04 +02:00
|
|
|
case Source::Texture3:
|
2017-05-26 10:47:30 +02:00
|
|
|
out += SampleTexture(config, 3);
|
2017-05-05 14:25:04 +02:00
|
|
|
break;
|
2015-10-06 04:33:47 +02:00
|
|
|
case Source::PreviousBuffer:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "combiner_buffer";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::Constant:
|
2015-10-13 04:23:26 +02:00
|
|
|
((out += "const_color[") += index_name) += ']';
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Source::Previous:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "last_tex_env_out";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
default:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec4(0.0)";
|
2015-10-06 04:33:47 +02:00
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown source op %u", source);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the color components to use for the specified TEV stage color modifier
|
2016-09-18 02:38:01 +02:00
|
|
|
static void AppendColorModifier(std::string& out, const PicaShaderConfig& config,
|
|
|
|
TevStageConfig::ColorModifier modifier,
|
|
|
|
TevStageConfig::Source source, const std::string& index_name) {
|
2015-10-07 00:01:53 +02:00
|
|
|
using ColorModifier = TevStageConfig::ColorModifier;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (modifier) {
|
|
|
|
case ColorModifier::SourceColor:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".rgb";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::OneMinusSourceColor:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(1.0) - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".rgb";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::SourceAlpha:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".aaa";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::OneMinusSourceAlpha:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(1.0) - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".aaa";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::SourceRed:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".rrr";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::OneMinusSourceRed:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(1.0) - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".rrr";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::SourceGreen:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".ggg";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::OneMinusSourceGreen:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(1.0) - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".ggg";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::SourceBlue:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".bbb";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case ColorModifier::OneMinusSourceBlue:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(1.0) - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".bbb";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
default:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(0.0)";
|
2015-10-06 04:33:47 +02:00
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown color modifier op %u", modifier);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the alpha component to use for the specified TEV stage alpha modifier
|
2016-09-18 02:38:01 +02:00
|
|
|
static void AppendAlphaModifier(std::string& out, const PicaShaderConfig& config,
|
|
|
|
TevStageConfig::AlphaModifier modifier,
|
|
|
|
TevStageConfig::Source source, const std::string& index_name) {
|
2015-10-07 00:01:53 +02:00
|
|
|
using AlphaModifier = TevStageConfig::AlphaModifier;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (modifier) {
|
|
|
|
case AlphaModifier::SourceAlpha:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".a";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::OneMinusSourceAlpha:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "1.0 - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".a";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::SourceRed:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".r";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::OneMinusSourceRed:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "1.0 - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".r";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::SourceGreen:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".g";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::OneMinusSourceGreen:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "1.0 - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".g";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::SourceBlue:
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".b";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case AlphaModifier::OneMinusSourceBlue:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "1.0 - ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendSource(out, config, source, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ".b";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
default:
|
2015-10-08 03:02:50 +02:00
|
|
|
out += "0.0";
|
2015-10-06 04:33:47 +02:00
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown alpha modifier op %u", modifier);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the combiner function for the color components for the specified TEV stage operation
|
2015-10-07 00:01:53 +02:00
|
|
|
static void AppendColorCombiner(std::string& out, TevStageConfig::Operation operation,
|
2016-09-18 02:38:01 +02:00
|
|
|
const std::string& variable_name) {
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "clamp(";
|
2015-10-07 00:01:53 +02:00
|
|
|
using Operation = TevStageConfig::Operation;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (operation) {
|
|
|
|
case Operation::Replace:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += variable_name + "[0]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Modulate:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Add:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] + " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::AddSigned:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] + " + variable_name + "[1] - vec3(0.5)";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Lerp:
|
2016-09-18 02:38:01 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[2] + " + variable_name +
|
|
|
|
"[1] * (vec3(1.0) - " + variable_name + "[2])";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Subtract:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] - " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::MultiplyThenAdd:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::AddThenMultiply:
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "min(" + variable_name + "[0] + " + variable_name + "[1], vec3(1.0)) * " +
|
|
|
|
variable_name + "[2]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
2016-04-08 23:16:51 +02:00
|
|
|
case Operation::Dot3_RGB:
|
2017-04-19 22:48:10 +02:00
|
|
|
case Operation::Dot3_RGBA:
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "vec3(dot(" + variable_name + "[0] - vec3(0.5), " + variable_name +
|
|
|
|
"[1] - vec3(0.5)) * 4.0)";
|
2016-04-08 23:16:51 +02:00
|
|
|
break;
|
2015-10-06 04:33:47 +02:00
|
|
|
default:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "vec3(0.0)";
|
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown color combiner operation: %u", operation);
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
}
|
2015-10-21 06:04:02 +02:00
|
|
|
out += ", vec3(0.0), vec3(1.0))"; // Clamp result to 0.0, 1.0
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the combiner function for the alpha component for the specified TEV stage operation
|
2015-10-07 00:01:53 +02:00
|
|
|
static void AppendAlphaCombiner(std::string& out, TevStageConfig::Operation operation,
|
2016-09-18 02:38:01 +02:00
|
|
|
const std::string& variable_name) {
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "clamp(";
|
2015-10-07 00:01:53 +02:00
|
|
|
using Operation = TevStageConfig::Operation;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (operation) {
|
|
|
|
case Operation::Replace:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += variable_name + "[0]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Modulate:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Add:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] + " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::AddSigned:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] + " + variable_name + "[1] - 0.5";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Lerp:
|
2016-09-18 02:38:01 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[2] + " + variable_name +
|
|
|
|
"[1] * (1.0 - " + variable_name + "[2])";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::Subtract:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] - " + variable_name + "[1]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::MultiplyThenAdd:
|
2015-10-13 04:23:26 +02:00
|
|
|
out += variable_name + "[0] * " + variable_name + "[1] + " + variable_name + "[2]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case Operation::AddThenMultiply:
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "min(" + variable_name + "[0] + " + variable_name + "[1], 1.0) * " + variable_name +
|
|
|
|
"[2]";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
default:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "0.0";
|
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown alpha combiner operation: %u", operation);
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
}
|
2015-10-13 04:23:26 +02:00
|
|
|
out += ", 0.0, 1.0)";
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the if-statement condition used to evaluate alpha testing
|
2017-01-29 00:12:09 +01:00
|
|
|
static void AppendAlphaTestCondition(std::string& out, FramebufferRegs::CompareFunc func) {
|
|
|
|
using CompareFunc = FramebufferRegs::CompareFunc;
|
2015-10-06 04:33:47 +02:00
|
|
|
switch (func) {
|
|
|
|
case CompareFunc::Never:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "true";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case CompareFunc::Always:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "false";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
|
|
|
case CompareFunc::Equal:
|
|
|
|
case CompareFunc::NotEqual:
|
|
|
|
case CompareFunc::LessThan:
|
|
|
|
case CompareFunc::LessThanOrEqual:
|
|
|
|
case CompareFunc::GreaterThan:
|
2016-09-18 02:38:01 +02:00
|
|
|
case CompareFunc::GreaterThanOrEqual: {
|
2016-09-19 03:01:46 +02:00
|
|
|
static const char* op[] = {"!=", "==", ">=", ">", "<=", "<"};
|
2015-10-21 06:04:02 +02:00
|
|
|
unsigned index = (unsigned)func - (unsigned)CompareFunc::Equal;
|
2016-12-25 20:56:42 +01:00
|
|
|
out += "int(last_tex_env_out.a * 255.0) " + std::string(op[index]) + " alphatest_ref";
|
2015-10-06 04:33:47 +02:00
|
|
|
break;
|
2015-10-21 06:04:02 +02:00
|
|
|
}
|
|
|
|
|
2015-10-06 04:33:47 +02:00
|
|
|
default:
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "false";
|
2015-10-06 04:33:47 +02:00
|
|
|
LOG_CRITICAL(Render_OpenGL, "Unknown alpha test condition %u", func);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-07 00:21:28 +02:00
|
|
|
/// Writes the code to emulate the specified TEV stage
|
2015-10-10 04:46:47 +02:00
|
|
|
static void WriteTevStage(std::string& out, const PicaShaderConfig& config, unsigned index) {
|
2016-09-18 02:38:01 +02:00
|
|
|
const auto stage =
|
2017-01-29 00:12:09 +01:00
|
|
|
static_cast<const TexturingRegs::TevStageConfig>(config.state.tev_stages[index]);
|
2015-10-07 00:01:53 +02:00
|
|
|
if (!IsPassThroughTevStage(stage)) {
|
|
|
|
std::string index_name = std::to_string(index);
|
|
|
|
|
|
|
|
out += "vec3 color_results_" + index_name + "[3] = vec3[3](";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendColorModifier(out, config, stage.color_modifier1, stage.color_source1, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ", ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendColorModifier(out, config, stage.color_modifier2, stage.color_source2, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ", ";
|
2016-04-19 00:53:42 +02:00
|
|
|
AppendColorModifier(out, config, stage.color_modifier3, stage.color_source3, index_name);
|
2015-10-07 00:01:53 +02:00
|
|
|
out += ");\n";
|
|
|
|
|
|
|
|
out += "vec3 color_output_" + index_name + " = ";
|
|
|
|
AppendColorCombiner(out, stage.color_op, "color_results_" + index_name);
|
|
|
|
out += ";\n";
|
|
|
|
|
2017-04-19 22:48:10 +02:00
|
|
|
if (stage.color_op == TevStageConfig::Operation::Dot3_RGBA) {
|
|
|
|
// result of Dot3_RGBA operation is also placed to the alpha component
|
|
|
|
out += "float alpha_output_" + index_name + " = color_output_" + index_name + "[0];\n";
|
|
|
|
} else {
|
|
|
|
out += "float alpha_results_" + index_name + "[3] = float[3](";
|
|
|
|
AppendAlphaModifier(out, config, stage.alpha_modifier1, stage.alpha_source1,
|
|
|
|
index_name);
|
|
|
|
out += ", ";
|
|
|
|
AppendAlphaModifier(out, config, stage.alpha_modifier2, stage.alpha_source2,
|
|
|
|
index_name);
|
|
|
|
out += ", ";
|
|
|
|
AppendAlphaModifier(out, config, stage.alpha_modifier3, stage.alpha_source3,
|
|
|
|
index_name);
|
|
|
|
out += ");\n";
|
2015-10-07 00:01:53 +02:00
|
|
|
|
2017-04-19 22:48:10 +02:00
|
|
|
out += "float alpha_output_" + index_name + " = ";
|
|
|
|
AppendAlphaCombiner(out, stage.alpha_op, "alpha_results_" + index_name);
|
|
|
|
out += ";\n";
|
|
|
|
}
|
2015-10-07 00:01:53 +02:00
|
|
|
|
2015-10-13 04:23:26 +02:00
|
|
|
out += "last_tex_env_out = vec4("
|
2016-09-18 02:38:01 +02:00
|
|
|
"clamp(color_output_" +
|
|
|
|
index_name + " * " + std::to_string(stage.GetColorMultiplier()) +
|
|
|
|
".0, vec3(0.0), vec3(1.0)),"
|
|
|
|
"clamp(alpha_output_" +
|
|
|
|
index_name + " * " + std::to_string(stage.GetAlphaMultiplier()) +
|
|
|
|
".0, 0.0, 1.0));\n";
|
2015-10-07 00:01:53 +02:00
|
|
|
}
|
|
|
|
|
2015-12-01 07:33:38 +01:00
|
|
|
out += "combiner_buffer = next_combiner_buffer;\n";
|
|
|
|
|
2015-10-07 00:01:53 +02:00
|
|
|
if (config.TevStageUpdatesCombinerBufferColor(index))
|
2015-12-01 07:33:38 +01:00
|
|
|
out += "next_combiner_buffer.rgb = last_tex_env_out.rgb;\n";
|
2015-10-07 00:01:53 +02:00
|
|
|
|
|
|
|
if (config.TevStageUpdatesCombinerBufferAlpha(index))
|
2015-12-01 07:33:38 +01:00
|
|
|
out += "next_combiner_buffer.a = last_tex_env_out.a;\n";
|
2015-10-07 00:01:53 +02:00
|
|
|
}
|
|
|
|
|
2015-11-19 04:36:01 +01:00
|
|
|
/// Writes the code to emulate fragment lighting
|
|
|
|
static void WriteLighting(std::string& out, const PicaShaderConfig& config) {
|
2016-05-01 23:28:39 +02:00
|
|
|
const auto& lighting = config.state.lighting;
|
|
|
|
|
2015-11-19 04:36:01 +01:00
|
|
|
// Define lighting globals
|
2015-11-26 02:25:02 +01:00
|
|
|
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"
|
|
|
|
"vec3 light_vector = vec3(0.0);\n"
|
2017-05-26 15:23:33 +02:00
|
|
|
"vec3 refl_value = vec3(0.0);\n"
|
|
|
|
"vec3 spot_dir = vec3(0.0);\n;";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
2015-11-26 02:49:48 +01:00
|
|
|
// Compute fragment normals
|
2017-01-28 21:13:21 +01:00
|
|
|
if (lighting.bump_mode == LightingRegs::LightingBumpMode::NormalMap) {
|
2016-09-18 02:38:01 +02:00
|
|
|
// Bump mapping is enabled using a normal map, read perturbation vector from the selected
|
|
|
|
// texture
|
2017-05-26 10:47:30 +02:00
|
|
|
out += "vec3 surface_normal = 2.0 * (" + SampleTexture(config, lighting.bump_selector) +
|
|
|
|
").rgb - 1.0;\n";
|
2015-11-26 02:49:48 +01:00
|
|
|
|
2016-09-18 02:38:01 +02:00
|
|
|
// Recompute Z-component of perturbation if 'renorm' is enabled, this provides a higher
|
|
|
|
// precision result
|
2016-05-01 23:28:39 +02:00
|
|
|
if (lighting.bump_renorm) {
|
2016-09-18 02:38:01 +02:00
|
|
|
std::string val =
|
|
|
|
"(1.0 - (surface_normal.x*surface_normal.x + surface_normal.y*surface_normal.y))";
|
2015-11-26 02:49:48 +01:00
|
|
|
out += "surface_normal.z = sqrt(max(" + val + ", 0.0));\n";
|
|
|
|
}
|
2017-05-25 20:13:33 +02:00
|
|
|
|
|
|
|
// The tangent vector is not perturbed by the normal map and is just a unit vector.
|
|
|
|
out += "vec3 surface_tangent = vec3(1.0, 0.0, 0.0);\n";
|
2017-01-28 21:13:21 +01:00
|
|
|
} else if (lighting.bump_mode == LightingRegs::LightingBumpMode::TangentMap) {
|
2015-11-26 02:49:48 +01:00
|
|
|
// Bump mapping is enabled using a tangent map
|
|
|
|
LOG_CRITICAL(HW_GPU, "unimplemented bump mapping mode (tangent mapping)");
|
|
|
|
UNIMPLEMENTED();
|
|
|
|
} else {
|
2017-05-25 20:13:33 +02:00
|
|
|
// No bump mapping - surface local normal and tangent are just unit vectors
|
2015-11-26 02:49:48 +01:00
|
|
|
out += "vec3 surface_normal = vec3(0.0, 0.0, 1.0);\n";
|
2017-05-25 20:13:33 +02:00
|
|
|
out += "vec3 surface_tangent = vec3(1.0, 0.0, 0.0);\n";
|
2015-11-26 02:49:48 +01:00
|
|
|
}
|
|
|
|
|
2016-09-18 02:38:01 +02:00
|
|
|
// Rotate the surface-local normal by the interpolated normal quaternion to convert it to
|
2017-05-26 11:55:42 +02:00
|
|
|
// eyespace.
|
2017-05-25 20:13:33 +02:00
|
|
|
out += "vec4 normalized_normquat = normalize(normquat);\n";
|
|
|
|
out += "vec3 normal = quaternion_rotate(normalized_normquat, surface_normal);\n";
|
|
|
|
out += "vec3 tangent = quaternion_rotate(normalized_normquat, surface_tangent);\n";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
|
|
|
// Gets the index into the specified lookup table for specular lighting
|
2017-01-28 21:13:21 +01:00
|
|
|
auto GetLutIndex = [&lighting](unsigned light_num, LightingRegs::LightingLutInput input,
|
|
|
|
bool abs) {
|
2015-11-19 04:36:01 +01:00
|
|
|
const std::string half_angle = "normalize(normalize(view) + light_vector)";
|
|
|
|
std::string index;
|
|
|
|
switch (input) {
|
2017-01-28 21:13:21 +01:00
|
|
|
case LightingRegs::LightingLutInput::NH:
|
2015-11-19 04:36:01 +01:00
|
|
|
index = "dot(normal, " + half_angle + ")";
|
|
|
|
break;
|
|
|
|
|
2017-01-28 21:13:21 +01:00
|
|
|
case LightingRegs::LightingLutInput::VH:
|
2015-11-25 04:59:14 +01:00
|
|
|
index = std::string("dot(normalize(view), " + half_angle + ")");
|
2015-11-19 04:36:01 +01:00
|
|
|
break;
|
|
|
|
|
2017-01-28 21:13:21 +01:00
|
|
|
case LightingRegs::LightingLutInput::NV:
|
2015-11-25 04:59:14 +01:00
|
|
|
index = std::string("dot(normal, normalize(view))");
|
2015-11-19 04:36:01 +01:00
|
|
|
break;
|
|
|
|
|
2017-01-28 21:13:21 +01:00
|
|
|
case LightingRegs::LightingLutInput::LN:
|
2015-11-19 04:36:01 +01:00
|
|
|
index = std::string("dot(light_vector, normal)");
|
|
|
|
break;
|
|
|
|
|
2017-05-26 15:23:33 +02:00
|
|
|
case LightingRegs::LightingLutInput::SP:
|
|
|
|
index = std::string("dot(light_vector, spot_dir)");
|
|
|
|
break;
|
|
|
|
|
2017-05-25 20:13:33 +02:00
|
|
|
case LightingRegs::LightingLutInput::CP:
|
|
|
|
// CP input is only available with configuration 7
|
|
|
|
if (lighting.config == LightingRegs::LightingConfig::Config7) {
|
|
|
|
// Note: even if the normal vector is modified by normal map, which is not the
|
|
|
|
// normal of the tangent plane anymore, the half angle vector is still projected
|
|
|
|
// using the modified normal vector.
|
|
|
|
std::string half_angle_proj = half_angle +
|
|
|
|
" - normal / dot(normal, normal) * dot(normal, " +
|
|
|
|
half_angle + ")";
|
|
|
|
// Note: the half angle vector projection is confirmed not normalized before the dot
|
|
|
|
// product. The result is in fact not cos(phi) as the name suggested.
|
|
|
|
index = "dot(" + half_angle_proj + ", tangent)";
|
|
|
|
} else {
|
|
|
|
index = "0.0";
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2015-11-19 04:36:01 +01:00
|
|
|
default:
|
|
|
|
LOG_CRITICAL(HW_GPU, "Unknown lighting LUT input %d\n", (int)input);
|
|
|
|
UNIMPLEMENTED();
|
2016-08-30 19:30:13 +02:00
|
|
|
index = "0.0";
|
2015-11-19 04:36:01 +01:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (abs) {
|
|
|
|
// LUT index is in the range of (0.0, 1.0)
|
2016-09-18 02:38:01 +02:00
|
|
|
index = lighting.light[light_num].two_sided_diffuse ? "abs(" + index + ")"
|
2016-12-25 20:56:42 +01:00
|
|
|
: "max(" + index + ", 0.0)";
|
2015-11-19 04:36:01 +01:00
|
|
|
} else {
|
|
|
|
// LUT index is in the range of (-1.0, 1.0)
|
2016-12-25 20:55:24 +01:00
|
|
|
index = "((" + index + " < 0) ? " + index + " + 2.0 : " + index + ") / 2.0";
|
2015-11-19 04:36:01 +01:00
|
|
|
}
|
|
|
|
|
2016-12-25 20:55:24 +01:00
|
|
|
return "(OFFSET_256 + SCALE_256 * clamp(" + index + ", 0.0, 1.0))";
|
2015-11-19 04:36:01 +01:00
|
|
|
};
|
|
|
|
|
|
|
|
// Gets the lighting lookup table value given the specified sampler and index
|
2017-01-28 21:13:21 +01:00
|
|
|
auto GetLutValue = [](LightingRegs::LightingSampler sampler, std::string lut_index) {
|
2015-11-19 04:36:01 +01:00
|
|
|
return std::string("texture(lut[" + std::to_string((unsigned)sampler / 4) + "], " +
|
|
|
|
lut_index + ")[" + std::to_string((unsigned)sampler & 3) + "]");
|
|
|
|
};
|
|
|
|
|
|
|
|
// Write the code to emulate each enabled light
|
2016-05-01 23:28:39 +02:00
|
|
|
for (unsigned light_index = 0; light_index < lighting.src_num; ++light_index) {
|
|
|
|
const auto& light_config = lighting.light[light_index];
|
2015-11-19 05:40:18 +01:00
|
|
|
std::string light_src = "light_src[" + std::to_string(light_config.num) + "]";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
|
|
|
// Compute light vector (directional or positional)
|
|
|
|
if (light_config.directional)
|
|
|
|
out += "light_vector = normalize(" + light_src + ".position);\n";
|
|
|
|
else
|
|
|
|
out += "light_vector = normalize(" + light_src + ".position + view);\n";
|
|
|
|
|
2017-05-26 15:23:33 +02:00
|
|
|
out += "spot_dir = " + light_src + ".spot_direction;\n";
|
|
|
|
|
2016-09-18 02:38:01 +02:00
|
|
|
// Compute dot product of light_vector and normal, adjust if lighting is one-sided or
|
|
|
|
// two-sided
|
|
|
|
std::string dot_product = light_config.two_sided_diffuse
|
|
|
|
? "abs(dot(light_vector, normal))"
|
|
|
|
: "max(dot(light_vector, normal), 0.0)";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
2017-05-26 15:23:33 +02:00
|
|
|
// If enabled, compute spot light attenuation value
|
|
|
|
std::string spot_atten = "1.0";
|
|
|
|
if (light_config.spot_atten_enable &&
|
|
|
|
LightingRegs::IsLightingSamplerSupported(
|
|
|
|
lighting.config, LightingRegs::LightingSampler::SpotlightAttenuation)) {
|
|
|
|
std::string index =
|
|
|
|
GetLutIndex(light_config.num, lighting.lut_sp.type, lighting.lut_sp.abs_input);
|
|
|
|
auto sampler = LightingRegs::SpotlightAttenuationSampler(light_config.num);
|
|
|
|
spot_atten = "(" + std::to_string(lighting.lut_sp.scale) + " * " +
|
|
|
|
GetLutValue(sampler, index) + ")";
|
|
|
|
}
|
|
|
|
|
2015-11-19 04:36:01 +01:00
|
|
|
// If enabled, compute distance attenuation value
|
|
|
|
std::string dist_atten = "1.0";
|
2015-11-19 05:40:18 +01:00
|
|
|
if (light_config.dist_atten_enable) {
|
2016-09-18 02:38:01 +02:00
|
|
|
std::string index = "(" + light_src + ".dist_atten_scale * length(-view - " +
|
|
|
|
light_src + ".position) + " + light_src + ".dist_atten_bias)";
|
2016-12-25 20:55:24 +01:00
|
|
|
index = "(OFFSET_256 + SCALE_256 * clamp(" + index + ", 0.0, 1.0))";
|
2017-05-26 15:23:33 +02:00
|
|
|
auto sampler = LightingRegs::DistanceAttenuationSampler(light_config.num);
|
|
|
|
dist_atten = GetLutValue(sampler, index);
|
2015-11-19 04:36:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// If enabled, clamp specular component if lighting result is negative
|
2016-09-18 02:38:01 +02:00
|
|
|
std::string clamp_highlights =
|
|
|
|
lighting.clamp_highlights ? "(dot(light_vector, normal) <= 0.0 ? 0.0 : 1.0)" : "1.0";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
2015-11-20 04:42:06 +01:00
|
|
|
// Specular 0 component
|
2015-11-19 05:40:18 +01:00
|
|
|
std::string d0_lut_value = "1.0";
|
2016-09-18 02:38:01 +02:00
|
|
|
if (lighting.lut_d0.enable &&
|
2017-01-28 21:13:21 +01:00
|
|
|
LightingRegs::IsLightingSamplerSupported(
|
|
|
|
lighting.config, LightingRegs::LightingSampler::Distribution0)) {
|
2015-11-20 04:42:06 +01:00
|
|
|
// Lookup specular "distribution 0" LUT value
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::Distribution0, index) + ")";
|
2015-11-19 05:40:18 +01:00
|
|
|
}
|
2015-11-20 04:42:06 +01:00
|
|
|
std::string specular_0 = "(" + d0_lut_value + " * " + light_src + ".specular_0)";
|
|
|
|
|
2015-11-26 02:25:02 +01:00
|
|
|
// If enabled, lookup ReflectRed value, otherwise, 1.0 is used
|
2016-09-18 02:38:01 +02:00
|
|
|
if (lighting.lut_rr.enable &&
|
2017-01-28 21:13:21 +01:00
|
|
|
LightingRegs::IsLightingSamplerSupported(lighting.config,
|
|
|
|
LightingRegs::LightingSampler::ReflectRed)) {
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::ReflectRed, index) + ")";
|
2015-11-26 02:25:02 +01:00
|
|
|
out += "refl_value.r = " + value + ";\n";
|
|
|
|
} else {
|
|
|
|
out += "refl_value.r = 1.0;\n";
|
|
|
|
}
|
|
|
|
|
|
|
|
// If enabled, lookup ReflectGreen value, otherwise, ReflectRed value is used
|
2016-09-18 02:38:01 +02:00
|
|
|
if (lighting.lut_rg.enable &&
|
2017-01-28 21:13:21 +01:00
|
|
|
LightingRegs::IsLightingSamplerSupported(lighting.config,
|
|
|
|
LightingRegs::LightingSampler::ReflectGreen)) {
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::ReflectGreen, index) +
|
|
|
|
")";
|
2015-11-26 02:25:02 +01:00
|
|
|
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
|
2016-09-18 02:38:01 +02:00
|
|
|
if (lighting.lut_rb.enable &&
|
2017-01-28 21:13:21 +01:00
|
|
|
LightingRegs::IsLightingSamplerSupported(lighting.config,
|
|
|
|
LightingRegs::LightingSampler::ReflectBlue)) {
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::ReflectBlue, index) +
|
|
|
|
")";
|
2015-11-26 02:25:02 +01:00
|
|
|
out += "refl_value.b = " + value + ";\n";
|
|
|
|
} else {
|
|
|
|
out += "refl_value.b = refl_value.r;\n";
|
|
|
|
}
|
|
|
|
|
2015-11-20 04:42:06 +01:00
|
|
|
// Specular 1 component
|
|
|
|
std::string d1_lut_value = "1.0";
|
2016-09-18 02:38:01 +02:00
|
|
|
if (lighting.lut_d1.enable &&
|
2017-01-28 21:13:21 +01:00
|
|
|
LightingRegs::IsLightingSamplerSupported(
|
|
|
|
lighting.config, LightingRegs::LightingSampler::Distribution1)) {
|
2015-11-20 04:42:06 +01:00
|
|
|
// Lookup specular "distribution 1" LUT value
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::Distribution1, index) + ")";
|
2015-11-20 04:42:06 +01:00
|
|
|
}
|
2016-09-18 02:38:01 +02:00
|
|
|
std::string specular_1 =
|
|
|
|
"(" + d1_lut_value + " * refl_value * " + light_src + ".specular_1)";
|
2015-11-19 04:36:01 +01:00
|
|
|
|
2015-11-24 02:26:09 +01:00
|
|
|
// Fresnel
|
2017-01-28 21:13:21 +01:00
|
|
|
if (lighting.lut_fr.enable &&
|
|
|
|
LightingRegs::IsLightingSamplerSupported(lighting.config,
|
|
|
|
LightingRegs::LightingSampler::Fresnel)) {
|
2015-11-24 02:26:09 +01:00
|
|
|
// Lookup fresnel LUT value
|
2016-09-18 02:38:01 +02:00
|
|
|
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) + " * " +
|
2017-01-28 21:13:21 +01:00
|
|
|
GetLutValue(LightingRegs::LightingSampler::Fresnel, index) + ")";
|
2015-11-24 02:26:09 +01:00
|
|
|
|
|
|
|
// Enabled for difffuse lighting alpha component
|
2017-01-28 21:13:21 +01:00
|
|
|
if (lighting.fresnel_selector == LightingRegs::LightingFresnelSelector::PrimaryAlpha ||
|
|
|
|
lighting.fresnel_selector == LightingRegs::LightingFresnelSelector::Both) {
|
2015-11-26 02:25:02 +01:00
|
|
|
out += "diffuse_sum.a *= " + value + ";\n";
|
2017-01-28 21:13:21 +01:00
|
|
|
}
|
2015-11-24 02:26:09 +01:00
|
|
|
|
|
|
|
// Enabled for the specular lighting alpha component
|
2017-01-28 21:13:21 +01:00
|
|
|
if (lighting.fresnel_selector ==
|
|
|
|
LightingRegs::LightingFresnelSelector::SecondaryAlpha ||
|
|
|
|
lighting.fresnel_selector == LightingRegs::LightingFresnelSelector::Both) {
|
2015-11-26 02:25:02 +01:00
|
|
|
out += "specular_sum.a *= " + value + ";\n";
|
2017-01-28 21:13:21 +01:00
|
|
|
}
|
2015-11-24 02:26:09 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Compute primary fragment color (diffuse lighting) function
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "diffuse_sum.rgb += ((" + light_src + ".diffuse * " + dot_product + ") + " +
|
2017-05-26 15:23:33 +02:00
|
|
|
light_src + ".ambient) * " + dist_atten + " * " + spot_atten + ";\n";
|
2015-11-24 02:26:09 +01:00
|
|
|
|
2015-11-19 04:36:01 +01:00
|
|
|
// Compute secondary fragment color (specular lighting) function
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "specular_sum.rgb += (" + specular_0 + " + " + specular_1 + ") * " +
|
2017-05-26 15:23:33 +02:00
|
|
|
clamp_highlights + " * " + dist_atten + " * " + spot_atten + ";\n";
|
2015-11-19 04:36:01 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Sum final lighting result
|
2015-11-24 02:26:09 +01:00
|
|
|
out += "diffuse_sum.rgb += lighting_global_ambient;\n";
|
|
|
|
out += "primary_fragment_color = clamp(diffuse_sum, vec4(0.0), vec4(1.0));\n";
|
|
|
|
out += "secondary_fragment_color = clamp(specular_sum, vec4(0.0), vec4(1.0));\n";
|
2015-11-19 04:36:01 +01:00
|
|
|
}
|
|
|
|
|
2017-05-05 14:25:04 +02:00
|
|
|
using ProcTexClamp = TexturingRegs::ProcTexClamp;
|
|
|
|
using ProcTexShift = TexturingRegs::ProcTexShift;
|
|
|
|
using ProcTexCombiner = TexturingRegs::ProcTexCombiner;
|
|
|
|
using ProcTexFilter = TexturingRegs::ProcTexFilter;
|
|
|
|
|
|
|
|
void AppendProcTexShiftOffset(std::string& out, const std::string& v, ProcTexShift mode,
|
|
|
|
ProcTexClamp clamp_mode) {
|
|
|
|
std::string offset = (clamp_mode == ProcTexClamp::MirroredRepeat) ? "1.0" : "0.5";
|
|
|
|
switch (mode) {
|
|
|
|
case ProcTexShift::None:
|
|
|
|
out += "0";
|
|
|
|
break;
|
|
|
|
case ProcTexShift::Odd:
|
|
|
|
out += offset + " * ((int(" + v + ") / 2) % 2)";
|
|
|
|
break;
|
|
|
|
case ProcTexShift::Even:
|
|
|
|
out += offset + " * (((int(" + v + ") + 1) / 2) % 2)";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
LOG_CRITICAL(HW_GPU, "Unknown shift mode %u", static_cast<u32>(mode));
|
|
|
|
out += "0";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void AppendProcTexClamp(std::string& out, const std::string& var, ProcTexClamp mode) {
|
|
|
|
switch (mode) {
|
|
|
|
case ProcTexClamp::ToZero:
|
|
|
|
out += var + " = " + var + " > 1.0 ? 0 : " + var + ";\n";
|
|
|
|
break;
|
|
|
|
case ProcTexClamp::ToEdge:
|
|
|
|
out += var + " = " + "min(" + var + ", 1.0);\n";
|
|
|
|
break;
|
|
|
|
case ProcTexClamp::SymmetricalRepeat:
|
|
|
|
out += var + " = " + "fract(" + var + ");\n";
|
|
|
|
break;
|
|
|
|
case ProcTexClamp::MirroredRepeat: {
|
|
|
|
out +=
|
|
|
|
var + " = int(" + var + ") % 2 == 0 ? fract(" + var + ") : 1.0 - fract(" + var + ");\n";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case ProcTexClamp::Pulse:
|
|
|
|
out += var + " = " + var + " > 0.5 ? 1.0 : 0.0;\n";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
LOG_CRITICAL(HW_GPU, "Unknown clamp mode %u", static_cast<u32>(mode));
|
|
|
|
out += var + " = " + "min(" + var + ", 1.0);\n";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void AppendProcTexCombineAndMap(std::string& out, ProcTexCombiner combiner,
|
|
|
|
const std::string& map_lut) {
|
|
|
|
std::string combined;
|
|
|
|
switch (combiner) {
|
|
|
|
case ProcTexCombiner::U:
|
|
|
|
combined = "u";
|
|
|
|
break;
|
|
|
|
case ProcTexCombiner::U2:
|
|
|
|
combined = "(u * u)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::V:
|
|
|
|
combined = "v";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::V2:
|
|
|
|
combined = "(v * v)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::Add:
|
|
|
|
combined = "((u + v) * 0.5)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::Add2:
|
|
|
|
combined = "((u * u + v * v) * 0.5)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::SqrtAdd2:
|
|
|
|
combined = "min(sqrt(u * u + v * v), 1.0)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::Min:
|
|
|
|
combined = "min(u, v)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::Max:
|
|
|
|
combined = "max(u, v)";
|
|
|
|
break;
|
|
|
|
case TexturingRegs::ProcTexCombiner::RMax:
|
|
|
|
combined = "min(((u + v) * 0.5 + sqrt(u * u + v * v)) * 0.5, 1.0)";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
LOG_CRITICAL(HW_GPU, "Unknown combiner %u", static_cast<u32>(combiner));
|
|
|
|
combined = "0.0";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
out += "ProcTexLookupLUT(" + map_lut + ", " + combined + ")";
|
|
|
|
}
|
|
|
|
|
|
|
|
void AppendProcTexSampler(std::string& out, const PicaShaderConfig& config) {
|
|
|
|
// LUT sampling uitlity
|
|
|
|
// For NoiseLUT/ColorMap/AlphaMap, coord=0.0 is lut[0], coord=127.0/128.0 is lut[127] and
|
|
|
|
// coord=1.0 is lut[127]+lut_diff[127]. For other indices, the result is interpolated using
|
|
|
|
// value entries and difference entries.
|
|
|
|
out += R"(
|
|
|
|
float ProcTexLookupLUT(sampler1D lut, float coord) {
|
|
|
|
coord *= 128;
|
|
|
|
float index_i = clamp(floor(coord), 0.0, 127.0);
|
|
|
|
float index_f = coord - index_i; // fract() cannot be used here because 128.0 needs to be
|
|
|
|
// extracted as index_i = 127.0 and index_f = 1.0
|
|
|
|
vec2 entry = texelFetch(lut, int(index_i), 0).rg;
|
|
|
|
return clamp(entry.r + entry.g * index_f, 0.0, 1.0);
|
|
|
|
}
|
|
|
|
)";
|
|
|
|
|
|
|
|
// Noise utility
|
|
|
|
if (config.state.proctex.noise_enable) {
|
|
|
|
// See swrasterizer/proctex.cpp for more information about these functions
|
|
|
|
out += R"(
|
|
|
|
int ProcTexNoiseRand1D(int v) {
|
|
|
|
const int table[] = int[](0,4,10,8,4,9,7,12,5,15,13,14,11,15,2,11);
|
|
|
|
return ((v % 9 + 2) * 3 & 0xF) ^ table[(v / 9) & 0xF];
|
|
|
|
}
|
|
|
|
|
|
|
|
float ProcTexNoiseRand2D(vec2 point) {
|
|
|
|
const int table[] = int[](10,2,15,8,0,7,4,5,5,13,2,6,13,9,3,14);
|
|
|
|
int u2 = ProcTexNoiseRand1D(int(point.x));
|
|
|
|
int v2 = ProcTexNoiseRand1D(int(point.y));
|
|
|
|
v2 += ((u2 & 3) == 1) ? 4 : 0;
|
|
|
|
v2 ^= (u2 & 1) * 6;
|
|
|
|
v2 += 10 + u2;
|
|
|
|
v2 &= 0xF;
|
|
|
|
v2 ^= table[u2];
|
|
|
|
return -1.0 + float(v2) * 2.0/ 15.0;
|
|
|
|
}
|
|
|
|
|
|
|
|
float ProcTexNoiseCoef(vec2 x) {
|
|
|
|
vec2 grid = 9.0 * proctex_noise_f * abs(x + proctex_noise_p);
|
|
|
|
vec2 point = floor(grid);
|
|
|
|
vec2 frac = grid - point;
|
|
|
|
|
|
|
|
float g0 = ProcTexNoiseRand2D(point) * (frac.x + frac.y);
|
|
|
|
float g1 = ProcTexNoiseRand2D(point + vec2(1.0, 0.0)) * (frac.x + frac.y - 1.0);
|
|
|
|
float g2 = ProcTexNoiseRand2D(point + vec2(0.0, 1.0)) * (frac.x + frac.y - 1.0);
|
|
|
|
float g3 = ProcTexNoiseRand2D(point + vec2(1.0, 1.0)) * (frac.x + frac.y - 2.0);
|
|
|
|
|
|
|
|
float x_noise = ProcTexLookupLUT(proctex_noise_lut, frac.x);
|
|
|
|
float y_noise = ProcTexLookupLUT(proctex_noise_lut, frac.y);
|
|
|
|
float x0 = mix(g0, g1, x_noise);
|
|
|
|
float x1 = mix(g2, g3, x_noise);
|
|
|
|
return mix(x0, x1, y_noise);
|
|
|
|
}
|
|
|
|
)";
|
|
|
|
}
|
|
|
|
|
|
|
|
out += "vec4 ProcTex() {\n";
|
|
|
|
out += "vec2 uv = abs(texcoord[" + std::to_string(config.state.proctex.coord) + "]);\n";
|
|
|
|
|
|
|
|
// Get shift offset before noise generation
|
|
|
|
out += "float u_shift = ";
|
|
|
|
AppendProcTexShiftOffset(out, "uv.y", config.state.proctex.u_shift,
|
|
|
|
config.state.proctex.u_clamp);
|
|
|
|
out += ";\n";
|
|
|
|
out += "float v_shift = ";
|
|
|
|
AppendProcTexShiftOffset(out, "uv.x", config.state.proctex.v_shift,
|
|
|
|
config.state.proctex.v_clamp);
|
|
|
|
out += ";\n";
|
|
|
|
|
|
|
|
// Generate noise
|
|
|
|
if (config.state.proctex.noise_enable) {
|
|
|
|
out += "uv += proctex_noise_a * ProcTexNoiseCoef(uv);\n";
|
|
|
|
out += "uv = abs(uv);\n";
|
|
|
|
}
|
|
|
|
|
|
|
|
// Shift
|
|
|
|
out += "float u = uv.x + u_shift;\n";
|
|
|
|
out += "float v = uv.y + v_shift;\n";
|
|
|
|
|
|
|
|
// Clamp
|
|
|
|
AppendProcTexClamp(out, "u", config.state.proctex.u_clamp);
|
|
|
|
AppendProcTexClamp(out, "v", config.state.proctex.v_clamp);
|
|
|
|
|
|
|
|
// Combine and map
|
|
|
|
out += "float lut_coord = ";
|
|
|
|
AppendProcTexCombineAndMap(out, config.state.proctex.color_combiner, "proctex_color_map");
|
|
|
|
out += ";\n";
|
|
|
|
|
|
|
|
// Look up color
|
|
|
|
// For the color lut, coord=0.0 is lut[offset] and coord=1.0 is lut[offset+width-1]
|
|
|
|
out += "lut_coord *= " + std::to_string(config.state.proctex.lut_width - 1) + ";\n";
|
|
|
|
// TODO(wwylele): implement mipmap
|
|
|
|
switch (config.state.proctex.lut_filter) {
|
|
|
|
case ProcTexFilter::Linear:
|
|
|
|
case ProcTexFilter::LinearMipmapLinear:
|
|
|
|
case ProcTexFilter::LinearMipmapNearest:
|
|
|
|
out += "int lut_index_i = int(lut_coord) + " +
|
|
|
|
std::to_string(config.state.proctex.lut_offset) + ";\n";
|
|
|
|
out += "float lut_index_f = fract(lut_coord);\n";
|
|
|
|
out += "vec4 final_color = texelFetch(proctex_lut, lut_index_i, 0) + lut_index_f * "
|
|
|
|
"texelFetch(proctex_diff_lut, lut_index_i, 0);\n";
|
|
|
|
break;
|
|
|
|
case ProcTexFilter::Nearest:
|
|
|
|
case ProcTexFilter::NearestMipmapLinear:
|
|
|
|
case ProcTexFilter::NearestMipmapNearest:
|
|
|
|
out += "lut_coord += " + std::to_string(config.state.proctex.lut_offset) + ";\n";
|
|
|
|
out += "vec4 final_color = texelFetch(proctex_lut, int(round(lut_coord)), 0);\n";
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (config.state.proctex.separate_alpha) {
|
|
|
|
// Note: in separate alpha mode, the alpha channel skips the color LUT look up stage. It
|
|
|
|
// uses the output of CombineAndMap directly instead.
|
|
|
|
out += "float final_alpha = ";
|
|
|
|
AppendProcTexCombineAndMap(out, config.state.proctex.alpha_combiner, "proctex_alpha_map");
|
|
|
|
out += ";\n";
|
|
|
|
out += "return vec4(final_color.xyz, final_alpha);\n}\n";
|
|
|
|
} else {
|
|
|
|
out += "return final_color;\n}\n";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-10-10 04:46:47 +02:00
|
|
|
std::string GenerateFragmentShader(const PicaShaderConfig& config) {
|
2016-05-01 23:28:39 +02:00
|
|
|
const auto& state = config.state;
|
|
|
|
|
2015-10-07 00:01:53 +02:00
|
|
|
std::string out = R"(
|
2015-11-26 04:33:24 +01:00
|
|
|
#version 330 core
|
2015-10-06 04:33:47 +02:00
|
|
|
#define NUM_TEV_STAGES 6
|
2015-11-12 23:33:21 +01:00
|
|
|
#define NUM_LIGHTS 8
|
2016-12-25 20:55:24 +01:00
|
|
|
|
|
|
|
// Texture coordinate offsets and scales
|
|
|
|
#define OFFSET_256 (0.5 / 256.0)
|
|
|
|
#define SCALE_256 (255.0 / 256.0)
|
2015-10-06 04:33:47 +02:00
|
|
|
|
2015-10-13 04:23:26 +02:00
|
|
|
in vec4 primary_color;
|
|
|
|
in vec2 texcoord[3];
|
2016-04-19 00:53:42 +02:00
|
|
|
in float texcoord0_w;
|
2015-11-12 23:33:21 +01:00
|
|
|
in vec4 normquat;
|
|
|
|
in vec3 view;
|
2015-10-13 04:23:26 +02:00
|
|
|
|
2015-12-02 19:23:51 +01:00
|
|
|
in vec4 gl_FragCoord;
|
|
|
|
|
2015-10-06 04:33:47 +02:00
|
|
|
out vec4 color;
|
2015-11-10 17:58:53 +01:00
|
|
|
|
2015-11-12 23:33:21 +01:00
|
|
|
struct LightSrc {
|
2015-11-15 05:23:08 +01:00
|
|
|
vec3 specular_0;
|
|
|
|
vec3 specular_1;
|
2015-11-12 23:33:21 +01:00
|
|
|
vec3 diffuse;
|
|
|
|
vec3 ambient;
|
|
|
|
vec3 position;
|
2017-05-25 19:15:12 +02:00
|
|
|
vec3 spot_direction;
|
2016-05-23 22:53:53 +02:00
|
|
|
float dist_atten_bias;
|
|
|
|
float dist_atten_scale;
|
2015-11-12 23:33:21 +01:00
|
|
|
};
|
|
|
|
|
2015-11-10 17:58:53 +01:00
|
|
|
layout (std140) uniform shader_data {
|
2016-06-28 07:16:04 +02:00
|
|
|
vec2 framebuffer_scale;
|
2015-11-10 17:58:53 +01:00
|
|
|
int alphatest_ref;
|
2016-03-30 19:27:04 +02:00
|
|
|
float depth_scale;
|
2016-01-04 00:46:54 +01:00
|
|
|
float depth_offset;
|
2016-01-25 07:59:16 +01:00
|
|
|
int scissor_x1;
|
|
|
|
int scissor_y1;
|
|
|
|
int scissor_x2;
|
|
|
|
int scissor_y2;
|
2016-05-21 01:04:57 +02:00
|
|
|
vec3 fog_color;
|
2017-05-05 14:25:04 +02:00
|
|
|
vec2 proctex_noise_f;
|
|
|
|
vec2 proctex_noise_a;
|
|
|
|
vec2 proctex_noise_p;
|
2015-11-12 23:33:21 +01:00
|
|
|
vec3 lighting_global_ambient;
|
|
|
|
LightSrc light_src[NUM_LIGHTS];
|
2016-05-23 16:03:11 +02:00
|
|
|
vec4 const_color[NUM_TEV_STAGES];
|
|
|
|
vec4 tev_combiner_buffer_color;
|
2015-11-10 17:58:53 +01:00
|
|
|
};
|
|
|
|
|
2015-12-01 07:33:38 +01:00
|
|
|
uniform sampler2D tex[3];
|
2015-11-15 23:43:01 +01:00
|
|
|
uniform sampler1D lut[6];
|
2016-05-21 01:04:57 +02:00
|
|
|
uniform usampler1D fog_lut;
|
2017-05-05 14:25:04 +02:00
|
|
|
uniform sampler1D proctex_noise_lut;
|
|
|
|
uniform sampler1D proctex_color_map;
|
|
|
|
uniform sampler1D proctex_alpha_map;
|
|
|
|
uniform sampler1D proctex_lut;
|
|
|
|
uniform sampler1D proctex_diff_lut;
|
2015-10-06 04:33:47 +02:00
|
|
|
|
2015-11-26 02:49:48 +01:00
|
|
|
// Rotate the vector v by the quaternion q
|
|
|
|
vec3 quaternion_rotate(vec4 q, vec3 v) {
|
|
|
|
return v + 2.0 * cross(q.xyz, cross(q.xyz, v) + q.w * v);
|
2017-05-26 11:55:42 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
)";
|
2017-05-05 14:25:04 +02:00
|
|
|
|
|
|
|
if (config.state.proctex.enable)
|
|
|
|
AppendProcTexSampler(out, config);
|
2015-11-26 02:49:48 +01:00
|
|
|
|
2017-05-05 14:25:04 +02:00
|
|
|
out += R"(
|
2015-12-01 07:33:38 +01:00
|
|
|
void main() {
|
2015-11-12 23:33:21 +01:00
|
|
|
vec4 primary_fragment_color = vec4(0.0);
|
2015-11-15 05:23:08 +01:00
|
|
|
vec4 secondary_fragment_color = vec4(0.0);
|
2015-12-01 07:33:38 +01:00
|
|
|
)";
|
2015-10-06 04:33:47 +02:00
|
|
|
|
|
|
|
// Do not do any sort of processing if it's obvious we're not going to pass the alpha test
|
2017-01-29 00:12:09 +01:00
|
|
|
if (state.alpha_test_func == FramebufferRegs::CompareFunc::Never) {
|
2015-10-08 03:11:32 +02:00
|
|
|
out += "discard; }";
|
2015-10-07 00:01:53 +02:00
|
|
|
return out;
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2015-12-02 19:23:51 +01:00
|
|
|
// Append the scissor test
|
2017-01-28 05:16:36 +01:00
|
|
|
if (state.scissor_test_mode != RasterizerRegs::ScissorMode::Disabled) {
|
2015-12-02 19:23:51 +01:00
|
|
|
out += "if (";
|
|
|
|
// Negate the condition if we have to keep only the pixels outside the scissor box
|
2017-01-28 05:16:36 +01:00
|
|
|
if (state.scissor_test_mode == RasterizerRegs::ScissorMode::Include)
|
2015-12-02 19:23:51 +01:00
|
|
|
out += "!";
|
2016-09-16 09:25:28 +02:00
|
|
|
out += "(gl_FragCoord.x >= scissor_x1 && "
|
|
|
|
"gl_FragCoord.y >= scissor_y1 && "
|
|
|
|
"gl_FragCoord.x < scissor_x2 && "
|
|
|
|
"gl_FragCoord.y < scissor_y2)) discard;\n";
|
2015-12-02 19:23:51 +01:00
|
|
|
}
|
|
|
|
|
2016-05-21 01:04:57 +02:00
|
|
|
out += "float z_over_w = 1.0 - gl_FragCoord.z * 2.0;\n";
|
|
|
|
out += "float depth = z_over_w * depth_scale + depth_offset;\n";
|
2017-01-29 00:12:09 +01:00
|
|
|
if (state.depthmap_enable == RasterizerRegs::DepthBuffering::WBuffering) {
|
2016-05-21 01:04:57 +02:00
|
|
|
out += "depth /= gl_FragCoord.w;\n";
|
|
|
|
}
|
|
|
|
|
2016-05-01 23:28:39 +02:00
|
|
|
if (state.lighting.enable)
|
2015-11-19 05:40:18 +01:00
|
|
|
WriteLighting(out, config);
|
|
|
|
|
2015-12-01 07:33:38 +01:00
|
|
|
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";
|
|
|
|
|
2016-05-01 23:28:39 +02:00
|
|
|
for (size_t index = 0; index < state.tev_stages.size(); ++index)
|
2015-10-07 00:01:53 +02:00
|
|
|
WriteTevStage(out, config, (unsigned)index);
|
2015-10-06 04:33:47 +02:00
|
|
|
|
2017-01-29 00:12:09 +01:00
|
|
|
if (state.alpha_test_func != FramebufferRegs::CompareFunc::Always) {
|
2015-10-07 00:01:53 +02:00
|
|
|
out += "if (";
|
2016-05-01 23:28:39 +02:00
|
|
|
AppendAlphaTestCondition(out, state.alpha_test_func);
|
2015-10-13 04:23:26 +02:00
|
|
|
out += ") discard;\n";
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2016-05-21 01:04:57 +02:00
|
|
|
// Append fog combiner
|
2017-01-29 00:12:09 +01:00
|
|
|
if (state.fog_mode == TexturingRegs::FogMode::Fog) {
|
2016-05-21 01:04:57 +02:00
|
|
|
// Get index into fog LUT
|
|
|
|
if (state.fog_flip) {
|
|
|
|
out += "float fog_index = (1.0 - depth) * 128.0;\n";
|
|
|
|
} else {
|
|
|
|
out += "float fog_index = depth * 128.0;\n";
|
|
|
|
}
|
2016-03-30 19:27:04 +02:00
|
|
|
|
2016-05-21 01:04:57 +02:00
|
|
|
// Generate clamped fog factor from LUT for given fog index
|
|
|
|
out += "float fog_i = clamp(floor(fog_index), 0.0, 127.0);\n";
|
|
|
|
out += "float fog_f = fog_index - fog_i;\n";
|
|
|
|
out += "uint fog_lut_entry = texelFetch(fog_lut, int(fog_i), 0).r;\n";
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "float fog_lut_entry_difference = float(int((fog_lut_entry & 0x1FFFU) << 19U) >> "
|
|
|
|
"19);\n"; // Extract signed difference
|
2016-05-21 01:04:57 +02:00
|
|
|
out += "float fog_lut_entry_value = float((fog_lut_entry >> 13U) & 0x7FFU);\n";
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "float fog_factor = (fog_lut_entry_value + fog_lut_entry_difference * fog_f) / "
|
|
|
|
"2047.0;\n";
|
2016-05-21 01:04:57 +02:00
|
|
|
out += "fog_factor = clamp(fog_factor, 0.0, 1.0);\n";
|
|
|
|
|
|
|
|
// Blend the fog
|
|
|
|
out += "last_tex_env_out.rgb = mix(fog_color.rgb, last_tex_env_out.rgb, fog_factor);\n";
|
2016-03-30 19:27:04 +02:00
|
|
|
}
|
2016-05-21 01:04:57 +02:00
|
|
|
|
2016-03-30 19:27:04 +02:00
|
|
|
out += "gl_FragDepth = depth;\n";
|
2016-05-21 01:04:57 +02:00
|
|
|
out += "color = last_tex_env_out;\n";
|
2016-03-30 19:27:04 +02:00
|
|
|
|
|
|
|
out += "}";
|
2015-10-07 00:01:53 +02:00
|
|
|
|
|
|
|
return out;
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
std::string GenerateVertexShader() {
|
2015-11-26 04:33:24 +01:00
|
|
|
std::string out = "#version 330 core\n";
|
2015-11-12 23:33:21 +01:00
|
|
|
|
2016-09-18 02:38:01 +02:00
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_POSITION) +
|
|
|
|
") in vec4 vert_position;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_COLOR) + ") in vec4 vert_color;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD0) +
|
|
|
|
") in vec2 vert_texcoord0;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD1) +
|
|
|
|
") in vec2 vert_texcoord1;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD2) +
|
|
|
|
") in vec2 vert_texcoord2;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_TEXCOORD0_W) +
|
|
|
|
") in float vert_texcoord0_w;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_NORMQUAT) +
|
|
|
|
") in vec4 vert_normquat;\n";
|
|
|
|
out += "layout(location = " + std::to_string((int)ATTRIBUTE_VIEW) + ") in vec3 vert_view;\n";
|
2015-10-22 03:50:55 +02:00
|
|
|
|
|
|
|
out += R"(
|
2015-10-13 04:23:26 +02:00
|
|
|
out vec4 primary_color;
|
|
|
|
out vec2 texcoord[3];
|
2016-04-19 00:53:42 +02:00
|
|
|
out float texcoord0_w;
|
2015-11-12 23:33:21 +01:00
|
|
|
out vec4 normquat;
|
|
|
|
out vec3 view;
|
2015-10-06 04:33:47 +02:00
|
|
|
|
|
|
|
void main() {
|
2015-10-13 04:23:26 +02:00
|
|
|
primary_color = vert_color;
|
|
|
|
texcoord[0] = vert_texcoord0;
|
|
|
|
texcoord[1] = vert_texcoord1;
|
|
|
|
texcoord[2] = vert_texcoord2;
|
2016-04-19 00:53:42 +02:00
|
|
|
texcoord0_w = vert_texcoord0_w;
|
2015-11-12 23:33:21 +01:00
|
|
|
normquat = vert_normquat;
|
|
|
|
view = vert_view;
|
2015-12-05 07:23:39 +01:00
|
|
|
gl_Position = vec4(vert_position.x, vert_position.y, -vert_position.z, vert_position.w);
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
)";
|
2015-10-22 03:50:55 +02:00
|
|
|
|
2015-10-07 00:01:53 +02:00
|
|
|
return out;
|
2015-10-06 04:33:47 +02:00
|
|
|
}
|
|
|
|
|
2015-10-07 00:01:53 +02:00
|
|
|
} // namespace GLShader
|