PCSX2/pcsx2
1
0
Fork 0
mirror of https://github.com/PCSX2/pcsx2.git synced 2026-10-12 02:08:45 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
f7ef43b155b2cd98caad2aaf9f4b047ac6e087c7
pcsx2/bin/resources/shaders/opengl/tfx_fs.glsl
T

1412 lines
36 KiB
GLSL
Raw Blame History

// SPDX-FileCopyrightText: 2002-2026 PCSX2 Dev Team
// SPDX-License-Identifier: GPL-3.0+
//#version 420 // Keep it for text editor detection
#define FMT_32 0
#define FMT_24 1
#define FMT_16 2
#define SHUFFLE_READ 1
#define SHUFFLE_WRITE 2
#define SHUFFLE_READWRITE 3
#ifndef ZTST_GEQUAL
#define ZTST_GEQUAL 2
#define ZTST_GREATER 3
#endif
#ifndef AFAIL_KEEP
#define AFAIL_KEEP 0
#define AFAIL_FB_ONLY 1
#define AFAIL_ZB_ONLY 2
#define AFAIL_RGB_ONLY 3
#define AFAIL_RGB_ONLY_DSB 4
#define AFAIL_RGB_ONLY_SW_Z 5
#endif
#ifndef PS_ATST_NONE
#define PS_ATST_NONE 0
#define PS_ATST_LEQUAL 1
#define PS_ATST_GEQUAL 2
#define PS_ATST_EQUAL 3
#define PS_ATST_NOTEQUAL 4
#endif
#ifndef PS_AA1_NONE
#define PS_AA1_NONE 0
#define PS_AA1_LINE 1
#define PS_AA1_TRIANGLE 2
#define PS_AA1_TRIANGLE_SW_Z 3
#endif
// TEX_COORD_DEBUG output the uv coordinate as color. It is useful
// to detect bad sampling due to upscaling
//#define TEX_COORD_DEBUG
// Just copy directly the texture coordinate
#ifdef TEX_COORD_DEBUG
#define PS_TFX 1
#define PS_TCC 1
#endif
#define SW_BLEND (PS_BLEND_A || PS_BLEND_B || PS_BLEND_D)
#define SW_BLEND_NEEDS_RT (SW_BLEND && (PS_BLEND_A == 1 || PS_BLEND_B == 1 || PS_BLEND_C == 1 || PS_BLEND_D == 1))
#define SW_AD_TO_HW (PS_BLEND_C == 1 && PS_A_MASKED)
#define PS_PRIMID_INIT (PS_DATE == 1 || PS_DATE == 2)
#define NEEDS_RT_EARLY (PS_TEX_IS_FB == 1 || PS_DATE >= 5)
#define NEEDS_RT_FOR_AFAIL (PS_AFAIL == PS_ZB_ONLY || PS_AFAIL == AFAIL_RGB_ONLY || PS_AFAIL == AFAIL_RGB_ONLY_SW_Z)
#define NEEDS_DEPTH_FOR_AFAIL (PS_AFAIL == AFAIL_FB_ONLY || PS_AFAIL == AFAIL_RGB_ONLY_SW_Z)
#define NEEDS_DEPTH_FOR_ZTST (PS_ZTST == ZTST_GEQUAL || PS_ZTST == ZTST_GREATER)
#define NEEDS_DEPTH_FOR_AA1 (PS_AA1 == PS_AA1_TRIANGLE_SW_Z)
#define NEEDS_RT (NEEDS_RT_EARLY || NEEDS_RT_FOR_AFAIL || (!PS_PRIMID_INIT && (PS_FBMASK || SW_BLEND_NEEDS_RT || SW_AD_TO_HW)) || PS_COLOR_FEEDBACK)
#define NEEDS_TEX (PS_TFX != 4)
#define SW_DEPTH (NEEDS_DEPTH_FOR_AFAIL || NEEDS_DEPTH_FOR_ZTST || NEEDS_DEPTH_FOR_AA1)
#define ZWRITE (SW_DEPTH || PS_ZCLAMP || PS_ZFLOOR)
layout(std140, binding = 0) uniform cb21
{
vec3 FogColor;
float AREF;
vec4 WH;
vec2 TA;
float MaxDepthPS;
float Af;
uvec4 FbMask;
vec4 HalfTexel;
vec4 MinMax;
vec4 LODParams;
vec4 STRange;
ivec4 ChannelShuffle;
vec2 ChannelShuffleOffset;
vec2 TC_OffsetHack;
vec2 STScale;
mat4 DitherMatrix;
float ScaledScaleFactor;
float RcpScaleFactor;
};
in SHADER
{
vec4 t_float;
vec4 t_int;
#if PS_IIP != 0
vec4 c;
#else
flat vec4 c;
#endif
float inv_cov; // We use the inverse to make it simpler to interpolate.
flat uint interior; // 1 for triangle interior; 0 for edge;
} PSin;
#define TARGET_0_QUALIFIER out
// Only enable framebuffer fetch when we actually need it.
#if HAS_FRAMEBUFFER_FETCH && NEEDS_RT
// We need to force the colour to be defined here, to read from it.
// Basically the only scenario where this'll happen is RGBA masked and DATE is active.
#undef PS_NO_COLOR
#define PS_NO_COLOR 0
#if defined(GL_EXT_shader_framebuffer_fetch)
#undef TARGET_0_QUALIFIER
#define TARGET_0_QUALIFIER inout
#define LAST_FRAG_COLOR SV_Target0
#elif defined(GL_ARM_shader_framebuffer_fetch)
#define LAST_FRAG_COLOR gl_LastFragColorARM
#endif
#endif
#if !PS_NO_COLOR && !PS_NO_COLOR1
// Same buffer but 2 colors for dual source blending
layout(location = 0, index = 0) TARGET_0_QUALIFIER vec4 SV_Target0;
layout(location = 0, index = 1) out vec4 SV_Target1;
#elif !PS_NO_COLOR
layout(location = 0) TARGET_0_QUALIFIER vec4 SV_Target0;
#endif
// Depth feedback mode 2 is for depth as color.
// Use FB fetch for the feedback if it's available.
#if SW_DEPTH && PS_NO_COLOR1 && (DEPTH_FEEDBACK_SUPPORT == 2)
#if HAS_FRAMEBUFFER_FETCH
layout(location = 1) inout float SV_Target1;
#else
layout(location = 1) out float SV_Target1;
#endif
#endif
#if NEEDS_TEX
layout(binding = 0) uniform sampler2D TextureSampler;
layout(binding = 1) uniform sampler2D PaletteSampler;
#endif
#if !HAS_FRAMEBUFFER_FETCH && NEEDS_RT
layout(binding = 2) uniform sampler2D RtSampler; // note 2 already use by the image below
#endif
#if PS_DATE == 3
layout(binding = 3) uniform sampler2D img_prim_min;
#endif
// Depth feedback mode 1 binds depth buffer directly as a texture.
// Depth feedback mode 2 (depth as color) can use FB fetch for the feedback,
// in which case we don't need to explicitly bind depth as a texture.
#if (DEPTH_FEEDBACK_SUPPORT == 1 || (DEPTH_FEEDBACK_SUPPORT == 2 && !HAS_FRAMEBUFFER_FETCH)) && SW_DEPTH
layout(binding = 4) uniform sampler2D DepthSampler;
#endif
#if ZWRITE && PS_HAS_CONSERVATIVE_DEPTH && !SW_DEPTH
layout(depth_less) out float gl_FragDepth;
#endif
vec4 sample_from_rt()
{
#if !NEEDS_RT
return vec4(0.0);
#elif HAS_FRAMEBUFFER_FETCH
return LAST_FRAG_COLOR;
#else
return texelFetch(RtSampler, ivec2(gl_FragCoord.xy), 0);
#endif
}
vec4 sample_from_depth()
{
#if !SW_DEPTH
return vec4(0.0);
#elif HAS_FRAMEBUFFER_FETCH && (DEPTH_FEEDBACK_SUPPORT == 2)
return SV_Target1;
#else
return texelFetch(DepthSampler, ivec2(gl_FragCoord.xy), 0);
#endif
}
#if NEEDS_TEX
#if (PS_AUTOMATIC_LOD != 1) && (PS_MANUAL_LOD == 1)
float manual_lod(float uv_w)
{
// FIXME add LOD: K - ( LOG2(Q) * (1 << L))
float K = LODParams.x;
float L = LODParams.y;
float bias = LODParams.z;
float max_lod = LODParams.w;
float gs_lod = K - log2(abs(uv_w)) * L;
// FIXME max useful ?
//return max(min(gs_lod, max_lod) - bias, 0.0f);
return min(gs_lod, max_lod) - bias;
}
#endif
#if PS_ANISOTROPIC_FILTERING > 1
vec4 sample_c_af(vec2 uv, float uv_w)
{
// Below taken from https://microsoft.github.io/DirectX-Specs/d3d/archive/D3D11_3_FunctionalSpec.htm#7.18.11%20LOD%20Calculations
// With guidance from https://pema.dev/2025/05/09/mipmaps-too-much-detail/
vec2 sz = textureSize(TextureSampler, 0);
vec2 dX = dFdx(uv) * sz;
vec2 dY = dFdy(uv) * sz;
// Calculate Ellipse Transform
bool d_zero = length(dX) == 0 || length(dY) == 0;
bool d_par = (dX.x * dY.y - dY.x * dX.y) == 0;
bool d_per = dot(dX, dY) == 0;
bool d_inf_nan = any(isinf(dX)) || any(isinf(dY)) || any(isnan(dX)) || any(isnan(dY));
if (!(d_zero || d_par || d_per || d_inf_nan))
{
float A = dX.y * dX.y + dY.y * dY.y;
float B = -2 * (dX.x * dX.y + dY.x * dY.y);
float C = dX.x * dX.x + dY.x * dY.x;
float f = (dX.x * dY.y - dY.x * dX.y);
float F = f * f;
float p = A - C;
float q = A + C;
float t = sqrt(p * p + B * B);
vec2 new_dX = vec2(
sqrt(F * (t + p) / (t * (q + t))),
sqrt(F * (t - p) / (t * (q + t))) * sign(B)
);
vec2 new_dY = vec2(
sqrt(F * (t - p) / (t * (q - t))) * -sign(B),
sqrt(F * (t + p) / (t * (q - t)))
);
d_inf_nan = any(isinf(new_dX)) || any(isinf(new_dY)) || any(isnan(new_dX)) || any(isnan(new_dY));
if (!d_inf_nan)
{
dX = new_dX;
dY = new_dY;
}
}
// Compute AF values
float squared_length_x = dX.x * dX.x + dX.y * dX.y;
float squared_length_y = dY.x * dY.x + dY.y * dY.y;
float determinant = abs(dX.x * dY.y - dX.y * dY.x);
bool is_major_x = squared_length_x > squared_length_y;
float squared_length_major = is_major_x ? squared_length_x : squared_length_y;
float length_major = sqrt(squared_length_major);
float aniso_ratio;
float length_lod;
vec2 aniso_line;
if (length_major <= 1.0f)
{
// A zero length_major would result in NaN Lod and break sampling.
// A small length_major would result in aniso_ratio getting clamped to 1.
// Perform isotropic filtering instead.
aniso_ratio = 1.0f;
length_lod = length_major;
aniso_line = vec2(0, 0);
}
else
{
float norm_major = 1.0f / length_major;
vec2 aniso_line_dir = vec2(
(is_major_x ? dX.x : dY.x) * norm_major,
(is_major_x ? dX.y : dY.y) * norm_major
);
aniso_ratio = squared_length_major / determinant;
// Calculate the minor length of the ellipse for Lod, while also clamping the ratio of anisotropy.
if (aniso_ratio > PS_ANISOTROPIC_FILTERING)
{
// ratio is clamped - Lod is based on ratio (preserves area)
aniso_ratio = PS_ANISOTROPIC_FILTERING;
length_lod = length_major / PS_ANISOTROPIC_FILTERING;
}
else
{
// ratio not clamped - Lod is based on area
length_lod = determinant / length_major;
}
// clamp to top Lod
if (length_lod < 1.0f)
aniso_ratio = max(1.0f, aniso_ratio * length_lod);
aniso_ratio = round(aniso_ratio);
aniso_line = aniso_line_dir * 0.5f * length_major * (1.0f / sz);
}
#if PS_AUTOMATIC_LOD == 1
float lod = log2(length_lod);
#elif PS_MANUAL_LOD == 1
float lod = manual_lod(uv_w);
#else
float lod = 0; // No Lod
#endif
vec4 colour;
if (aniso_ratio == 1.0f)
colour = textureLod(TextureSampler, uv, lod);
else
{
vec4 num = vec4(0, 0, 0, 0);
for (int i = 0; i < aniso_ratio; i++)
{
vec2 d = -aniso_line + (0.5f + i) * (2.0f * aniso_line) / aniso_ratio;
vec2 uv_sample = uv + d;
vec4 sample_colour = textureLod(TextureSampler, uv_sample, lod);
num += sample_colour;
}
colour = num / aniso_ratio;
}
return colour;
}
#endif
vec4 sample_c(vec2 uv)
{
#if PS_TEX_IS_FB == 1
return sample_from_rt();
#elif PS_REGION_RECT
return texelFetch(TextureSampler, ivec2(uv), 0);
#else
#if !PS_ADJS && !PS_ADJT
uv *= STScale;
#else
#if PS_ADJS
uv.x = (uv.x - STRange.x) * STRange.z;
#else
uv.x = uv.x * STScale.x;
#endif
#if PS_ADJT
uv.y = (uv.y - STRange.y) * STRange.w;
#else
uv.y = uv.y * STScale.y;
#endif
#endif
#if PS_ANISOTROPIC_FILTERING > 1
return sample_c_af(uv, PSin.t_float.w);
#elif PS_AUTOMATIC_LOD == 1
return texture(TextureSampler, uv);
#elif PS_MANUAL_LOD == 1
return textureLod(TextureSampler, uv, manual_lod(PSin.t_float.w));
#else
return textureLod(TextureSampler, uv, 0.0f); // No lod
#endif
#endif
}
vec4 sample_p(uint idx)
{
return texelFetch(PaletteSampler, ivec2(int(idx), 0), 0);
}
vec4 sample_p_norm(float u)
{
return sample_p(uint(u * 255.5f));
}
vec4 clamp_wrap_uv(vec4 uv)
{
vec4 uv_out = uv;
vec4 tex_size = WH.xyxy;
#if PS_WMS == PS_WMT
#if PS_REGION_RECT == 1 && PS_WMS == 0
uv_out = fract(uv);
#elif PS_REGION_RECT == 1 && PS_WMS == 1
uv_out = clamp(uv, vec4(0.0f), vec4(1.0f));
#elif PS_WMS == 2
uv_out = clamp(uv, MinMax.xyxy, MinMax.zwzw);
#elif PS_WMS == 3
#if PS_FST == 0
// wrap negative uv coords to avoid an off by one error that shifted
// textures. Fixes Xenosaga's hair issue.
uv = fract(uv);
#endif
uv_out = vec4((uvec4(uv * tex_size) & floatBitsToUint(MinMax.xyxy)) | floatBitsToUint(MinMax.zwzw)) / tex_size;
#endif
#else // PS_WMS != PS_WMT
#if PS_REGION_RECT == 1 && PS_WMS == 0
uv.xz = fract(uv.xz);
#elif PS_REGION_RECT == 1 && PS_WMS == 1
uv.xz = clamp(uv.xz, vec2(0.0f), vec2(1.0f));
#elif PS_WMS == 2
uv_out.xz = clamp(uv.xz, MinMax.xx, MinMax.zz);
#elif PS_WMS == 3
#if PS_FST == 0
uv.xz = fract(uv.xz);
#endif
uv_out.xz = vec2((uvec2(uv.xz * tex_size.xx) & floatBitsToUint(MinMax.xx)) | floatBitsToUint(MinMax.zz)) / tex_size.xx;
#endif
#if PS_REGION_RECT == 1 && PS_WMT == 0
uv_out.yw = fract(uv.yw);
#elif PS_REGION_RECT == 1 && PS_WMT == 1
uv_out.yw = clamp(uv.yw, vec2(0.0f), vec2(1.0f));
#elif PS_WMT == 2
uv_out.yw = clamp(uv.yw, MinMax.yy, MinMax.ww);
#elif PS_WMT == 3
#if PS_FST == 0
uv.yw = fract(uv.yw);
#endif
uv_out.yw = vec2((uvec2(uv.yw * tex_size.yy) & floatBitsToUint(MinMax.yy)) | floatBitsToUint(MinMax.ww)) / tex_size.yy;
#endif
#endif
#if PS_REGION_RECT == 1
// Normalized -> Integer Coordinates.
uv_out = clamp(uv_out * WH.zwzw + STRange.xyxy, STRange.xyxy, STRange.zwzw);
#endif
return uv_out;
}
mat4 sample_4c(vec4 uv)
{
mat4 c;
// Note: texture gather can't be used because of special clamping/wrapping
// Also it doesn't support lod
c[0] = sample_c(uv.xy);
c[1] = sample_c(uv.zy);
c[2] = sample_c(uv.xw);
c[3] = sample_c(uv.zw);
return c;
}
uvec4 sample_4_index(vec4 uv)
{
vec4 c;
// Either GS will send a texture that contains a single channel
// in this case the red channel is remapped as alpha channel
//
// Or we have an old RT (ie RGBA8) that contains index (4/8) in the alpha channel
// Note: texture gather can't be used because of special clamping/wrapping
// Also it doesn't support lod
c.x = sample_c(uv.xy).a;
c.y = sample_c(uv.zy).a;
c.z = sample_c(uv.xw).a;
c.w = sample_c(uv.zw).a;
#if PS_RTA_SRC_CORRECTION
uvec4 i = uvec4(round(c * 128.25f)); // Denormalize value
#else
uvec4 i = uvec4(c * 255.5f); // Denormalize value
#endif
#if PS_PAL_FMT == 1
// 4HL
return i & 0xFu;
#elif PS_PAL_FMT == 2
// 4HH
return i >> 4u;
#else
// 8
return i;
#endif
}
mat4 sample_4p(uvec4 u)
{
mat4 c;
c[0] = sample_p(u.x);
c[1] = sample_p(u.y);
c[2] = sample_p(u.z);
c[3] = sample_p(u.w);
return c;
}
uint fetch_raw_depth()
{
float multiplier = exp2(32.0f);
#if PS_TEX_IS_FB == 1
return uint(sample_from_rt().r * multiplier);
#else
return uint(texelFetch(TextureSampler, ivec2(gl_FragCoord.xy + ChannelShuffleOffset), 0).r * multiplier);
#endif
}
vec4 fetch_raw_color()
{
#if PS_TEX_IS_FB == 1
return sample_from_rt();
#else
return texelFetch(TextureSampler, ivec2(gl_FragCoord.xy + ChannelShuffleOffset), 0);
#endif
}
vec4 fetch_c(ivec2 uv)
{
#if PS_TEX_IS_FB == 1
return sample_from_rt();
#else
return texelFetch(TextureSampler, ivec2(uv), 0);
#endif
}
//////////////////////////////////////////////////////////////////////
// Depth sampling
//////////////////////////////////////////////////////////////////////
ivec2 clamp_wrap_uv_depth(ivec2 uv)
{
ivec2 uv_out = uv;
// Keep the full precision
// It allow to multiply the ScalingFactor before the 1/16 coeff
ivec4 mask = floatBitsToInt(MinMax) << 4;
#if PS_WMS == PS_WMT
#if PS_WMS == 2
uv_out = clamp(uv, mask.xy, mask.zw);
#elif PS_WMS == 3
uv_out = (uv & mask.xy) | mask.zw;
#endif
#else // PS_WMS != PS_WMT
#if PS_WMS == 2
uv_out.x = clamp(uv.x, mask.x, mask.z);
#elif PS_WMS == 3
uv_out.x = (uv.x & mask.x) | mask.z;
#endif
#if PS_WMT == 2
uv_out.y = clamp(uv.y, mask.y, mask.w);
#elif PS_WMT == 3
uv_out.y = (uv.y & mask.y) | mask.w;
#endif
#endif
return uv_out;
}
vec4 sample_depth(vec2 st)
{
vec2 uv_f = vec2(clamp_wrap_uv_depth(ivec2(st))) * vec2(ScaledScaleFactor);
#if PS_REGION_RECT == 1
uv_f = clamp(uv_f + STRange.xy, STRange.xy, STRange.zw);
#endif
ivec2 uv = ivec2(uv_f);
vec4 t = vec4(0.0f);
#if PS_TALES_OF_ABYSS_HLE == 1
// Warning: UV can't be used in channel effect
uint depth = fetch_raw_depth();
// Convert msb based on the palette
t = texelFetch(PaletteSampler, ivec2((depth >> 8u) & 0xFFu, 0), 0) * 255.0f;
#elif PS_URBAN_CHAOS_HLE == 1
// Depth buffer is read as a RGB5A1 texture. The game try to extract the green channel.
// So it will do a first channel trick to extract lsb, value is right-shifted.
// Then a new channel trick to extract msb which will shifted to the left.
// OpenGL uses a FLOAT32 format for the depth so it requires a couple of conversion.
// To be faster both steps (msb&lsb) are done in a single pass.
// Warning: UV can't be used in channel effect
uint depth = fetch_raw_depth();
// Convert lsb based on the palette
t = texelFetch(PaletteSampler, ivec2((depth & 0xFFu), 0), 0) * 255.0f;
// Msb is easier
float green = float((depth >> 8u) & 0xFFu) * 36.0f;
green = min(green, 255.0f);
t.g += green;
#elif PS_DEPTH_FMT == 1
// Based on ps_convert_float32_rgba8 of convert
// Convert a GL_FLOAT32 depth texture into a RGBA color texture
uint d = uint(fetch_c(uv).r * exp2(32.0f));
t = vec4(uvec4((d & 0xFFu), ((d >> 8) & 0xFFu), ((d >> 16) & 0xFFu), (d >> 24)));
#elif PS_DEPTH_FMT == 2
// Based on ps_convert_float16_rgb5a1 of convert
// Convert a GL_FLOAT32 (only 16 lsb) depth into a RGB5A1 color texture
uint d = uint(fetch_c(uv).r * exp2(32.0f));
t = vec4(uvec4((d & 0x1Fu), ((d >> 5) & 0x1Fu), ((d >> 10) & 0x1Fu), (d >> 15) & 0x01u)) * vec4(8.0f, 8.0f, 8.0f, 128.0f);
#elif PS_DEPTH_FMT == 3
// Convert a RGBA/RGB5A1 color texture into a RGBA/RGB5A1 color texture
t = fetch_c(uv) * 255.0f;
#endif
// warning t ranges from 0 to 255
#if (PS_AEM_FMT == FMT_24)
t.a = ( (PS_AEM == 0) || any(bvec3(t.rgb)) ) ? 255.0f * TA.x : 0.0f;
#elif (PS_AEM_FMT == FMT_16)
t.a = t.a >= 128.0f ? 255.0f * TA.y : ( (PS_AEM == 0) || any(bvec3(t.rgb)) ) ? 255.0f * TA.x : 0.0f;
#elif PS_PAL_FMT != 0 && !PS_TALES_OF_ABYSS_HLE && !PS_URBAN_CHAOS_HLE
t = trunc(sample_4p(uvec4(t.aaaa))[0] * 255.0f + 0.05f);
#endif
return t;
}
//////////////////////////////////////////////////////////////////////
// Fetch a Single Channel
//////////////////////////////////////////////////////////////////////
vec4 fetch_red()
{
#if PS_DEPTH_FMT == 1 || PS_DEPTH_FMT == 2
uint depth = (fetch_raw_depth()) & 0xFFu;
vec4 rt = vec4(depth) / 255.0f;
#else
vec4 rt = fetch_raw_color();
#endif
return sample_p_norm(rt.r) * 255.0f;
}
vec4 fetch_green()
{
#if PS_DEPTH_FMT == 1 || PS_DEPTH_FMT == 2
uint depth = (fetch_raw_depth() >> 8u) & 0xFFu;
vec4 rt = vec4(depth) / 255.0f;
#else
vec4 rt = fetch_raw_color();
#endif
return sample_p_norm(rt.g) * 255.0f;
}
vec4 fetch_blue()
{
#if PS_DEPTH_FMT == 1 || PS_DEPTH_FMT == 2
uint depth = (fetch_raw_depth() >> 16u) & 0xFFu;
vec4 rt = vec4(depth) / 255.0f;
#else
vec4 rt = fetch_raw_color();
#endif
return sample_p_norm(rt.b) * 255.0f;
}
vec4 fetch_alpha()
{
vec4 rt = fetch_raw_color();
return sample_p_norm(rt.a) * 255.0f;
}
vec4 fetch_rgb()
{
vec4 rt = fetch_raw_color();
vec4 c = vec4(sample_p_norm(rt.r).r, sample_p_norm(rt.g).g, sample_p_norm(rt.b).b, 1.0f);
return c * 255.0f;
}
vec4 fetch_gXbY()
{
#if PS_DEPTH_FMT == 1 || PS_DEPTH_FMT == 2
uint depth = fetch_raw_depth();
uint bg = (depth >> (8u + uint(ChannelShuffle.w))) & 0xFFu;
return vec4(bg);
#else
ivec4 rt = ivec4(fetch_raw_color() * 255.0f);
int green = (rt.g >> ChannelShuffle.w) & ChannelShuffle.z;
int blue = (rt.b << ChannelShuffle.y) & ChannelShuffle.x;
return vec4(green | blue);
#endif
}
//////////////////////////////////////////////////////////////////////
vec4 sample_color(vec2 st)
{
#if (PS_TCOFFSETHACK == 1)
st += TC_OffsetHack.xy;
#endif
vec4 t;
mat4 c;
vec2 dd;
// FIXME I'm not sure this condition is useful (I think code will be optimized)
#if (PS_LTF == 0 && PS_AEM_FMT == FMT_32 && PS_PAL_FMT == 0 && PS_REGION_RECT == 0 && PS_WMS < 2 && PS_WMT < 2)
// No software LTF and pure 32 bits RGBA texure without special texture wrapping
c[0] = sample_c(st);
#ifdef TEX_COORD_DEBUG
c[0].rg = st.xy;
#endif
#else
vec4 uv;
if(PS_LTF != 0)
{
uv = st.xyxy + HalfTexel;
dd = fract(uv.xy * WH.zw);
#if (PS_FST == 0)
// Background in Shin Megami Tensei Lucifers
// I suspect that uv isn't a standard number, so fract is outside of the [0;1] range
// Note: it is free on GPU but let's do it only for float coordinate
dd = clamp(dd, vec2(0.0f), vec2(1.0f));
#endif
}
else
{
uv = st.xyxy;
}
uv = clamp_wrap_uv(uv);
#if PS_PAL_FMT != 0
c = sample_4p(sample_4_index(uv));
#else
c = sample_4c(uv);
#endif
#ifdef TEX_COORD_DEBUG
c[0].rg = uv.xy;
c[1].rg = uv.xy;
c[2].rg = uv.xy;
c[3].rg = uv.xy;
#endif
#endif
// PERF note: using dot product reduces by 1 the number of instruction
// but I'm not sure it is equivalent neither faster.
for (int i = 0; i < 4; i++)
{
//float sum = dot(c[i].rgb, vec3(1.0f));
#if (PS_AEM_FMT == FMT_24)
c[i].a = ( (PS_AEM == 0) || any(bvec3(c[i].rgb)) ) ? TA.x : 0.0f;
//c[i].a = ( (PS_AEM == 0) || (sum > 0.0f) ) ? TA.x : 0.0f;
#elif (PS_AEM_FMT == FMT_16)
c[i].a = c[i].a >= 0.5 ? TA.y : ( (PS_AEM == 0) || any(bvec3(ivec3(c[i].rgb * 255.0f) & ivec3(0xF8))) ) ? TA.x : 0.0f;
//c[i].a = c[i].a >= 0.5 ? TA.y : ( (PS_AEM == 0) || (sum > 0.0f) ) ? TA.x : 0.0f;
#endif
}
#if(PS_LTF != 0)
t = mix(mix(c[0], c[1], dd.x), mix(c[2], c[3], dd.x), dd.y);
#else
t = c[0];
#endif
#if PS_AEM_FMT == FMT_32 && PS_PAL_FMT == 0 && PS_RTA_SRC_CORRECTION
t.a = t.a * (128.5f / 255.0f);
#endif
// The 0.05f helps to fix the overbloom of sotc
// I think the issue is related to the rounding of texture coodinate. The linear (from fixed unit)
// interpolation could be slightly below the correct one.
return trunc(t * 255.0f + 0.05f);
}
#endif // NEEDS_TEX
vec4 tfx(vec4 T, vec4 C)
{
vec4 C_out;
vec4 FxT = trunc((C * T) / 128.0f);
#if (PS_TFX == 0)
C_out = FxT;
#elif (PS_TFX == 1)
C_out = T;
#elif (PS_TFX == 2)
C_out.rgb = FxT.rgb + C.a;
C_out.a = T.a + C.a;
#elif (PS_TFX == 3)
C_out.rgb = FxT.rgb + C.a;
C_out.a = T.a;
#else
C_out = C;
#endif
#if (PS_TCC == 0)
C_out.a = C.a;
#endif
#if (PS_TFX == 0) || (PS_TFX == 2) || (PS_TFX == 3)
// Clamp only when it is useful
C_out = min(C_out, 255.0f);
#endif
return C_out;
}
bool atst(vec4 C)
{
float a = C.a;
#if PS_ATST == PS_ATST_LEQUAL
return (a <= AREF);
#elif PS_ATST == PS_ATST_GEQUAL
return (a >= AREF);
#elif PS_ATST == PS_ATST_EQUAL
return (abs(a - AREF) <= 0.5f);
#elif PS_ATST == PS_ATST_NOTEQUAL
return (abs(a - AREF) >= 0.5f);
#else
return true;
#endif
}
void fog(inout vec4 C, float f)
{
#if PS_FOG != 0
C.rgb = trunc(mix(FogColor, C.rgb, (f * 255.0f) / 256.0f));
#endif
}
vec4 ps_color()
{
//FIXME: maybe we can set gl_Position.w = q in VS
#if (PS_FST == 0)
vec2 st = PSin.t_float.xy / vec2(PSin.t_float.w);
vec2 st_int = PSin.t_int.zw / vec2(PSin.t_float.w);
#else
// Note xy are normalized coordinate
vec2 st = PSin.t_int.xy;
vec2 st_int = PSin.t_int.zw;
#endif
#if !NEEDS_TEX
vec4 T = vec4(0.0);
#elif PS_CHANNEL_FETCH == 1
vec4 T = fetch_red();
#elif PS_CHANNEL_FETCH == 2
vec4 T = fetch_green();
#elif PS_CHANNEL_FETCH == 3
vec4 T = fetch_blue();
#elif PS_CHANNEL_FETCH == 4
vec4 T = fetch_alpha();
#elif PS_CHANNEL_FETCH == 5
vec4 T = fetch_rgb();
#elif PS_CHANNEL_FETCH == 6
vec4 T = fetch_gXbY();
#elif PS_DEPTH_FMT > 0
// Integral coordinate
vec4 T = sample_depth(st_int);
#else
vec4 T = sample_color(st);
#endif
#if PS_SHUFFLE && !PS_READ16_SRC && !PS_SHUFFLE_SAME && !(PS_PROCESS_BA == SHUFFLE_READWRITE && PS_PROCESS_RG == SHUFFLE_READWRITE)
uvec4 denorm_c_before = uvec4(T);
#if (PS_PROCESS_BA & SHUFFLE_READ)
T.r = float((denorm_c_before.b << 3) & 0xF8u);
T.g = float(((denorm_c_before.b >> 2) & 0x38u) | ((denorm_c_before.a << 6) & 0xC0u));
T.b = float((denorm_c_before.a << 1) & 0xF8u);
T.a = float(denorm_c_before.a & 0x80u);
#else
T.r = float((denorm_c_before.r << 3) & 0xF8u);
T.g = float(((denorm_c_before.r >> 2) & 0x38u) | ((denorm_c_before.g << 6) & 0xC0u));
T.b = float((denorm_c_before.g << 1) & 0xF8u);
T.a = float(denorm_c_before.g & 0x80u);
#endif
T.a = ((T.a >= 127.5f) ? TA.y : ((PS_AEM == 0 || any(bvec3(ivec3(T.rgb) & ivec3(0xF8)))) ? TA.x : 0.0f)) * 255.0f;
#endif
vec4 C = tfx(T, PSin.c);
fog(C, PSin.t_float.z);
return C;
}
void ps_fbmask(inout vec4 C)
{
// FIXME do I need special case for 16 bits
#if PS_FBMASK
#if PS_COLCLIP_HW == 1
vec4 RT = trunc(sample_from_rt() * 65535.0f);
#else
vec4 RT = trunc(sample_from_rt() * 255.0f + 0.1f);
#endif
C = vec4((uvec4(C) & ~FbMask) | (uvec4(RT) & FbMask));
#endif
}
void ps_dither(inout vec3 C, float As)
{
#if PS_DITHER > 0 && PS_DITHER < 3
#if PS_DITHER == 2
ivec2 fpos = ivec2(gl_FragCoord.xy);
#else
ivec2 fpos = ivec2(gl_FragCoord.xy * RcpScaleFactor);
#endif
float value = DitherMatrix[fpos.y&3][fpos.x&3];
// The idea here is we add on the dither amount adjusted by the alpha before it goes to the hw blend
// so after the alpha blend the resulting value should be the same as (Cs - Cd) * As + Cd + Dither.
#if PS_DITHER_ADJUST
#if PS_BLEND_C == 2
float Alpha = Af;
#else
float Alpha = As;
#endif
value *= Alpha > 0.0f ? min(1.0f / Alpha, 1.0f) : 1.0f;
#endif
#if PS_ROUND_INV
C -= value;
#else
C += value;
#endif
#endif
}
void ps_color_clamp_wrap(inout vec3 C)
{
// When dithering the bottom 3 bits become meaningless and cause lines in the picture
// so we need to limit the color depth on dithered items
#if SW_BLEND || (PS_DITHER > 0 && PS_DITHER < 3) || PS_FBMASK
#if PS_DST_FMT == FMT_16 && PS_BLEND_MIX == 0 && PS_ROUND_INV
C += 7.0f; // Need to round up, not down since the shader will invert
#endif
// Correct the Color value based on the output format
#if PS_COLCLIP == 0 && PS_COLCLIP_HW == 0
// Standard Clamp
C = clamp(C, vec3(0.0f), vec3(255.0f));
#endif
// FIXME rouding of negative float?
// compiler uses trunc but it might need floor
// Warning: normally blending equation is mult(A, B) = A * B >> 7. GPU have the full accuracy
// GS: Color = 1, Alpha = 255 => output 1
// GPU: Color = 1/255, Alpha = 255/255 * 255/128 => output 1.9921875
#if PS_DST_FMT == FMT_16 && PS_DITHER < 3 && (PS_BLEND_MIX == 0 || PS_DITHER)
// In 16 bits format, only 5 bits of colors are used. It impacts shadows computation of Castlevania
C = vec3(ivec3(C) & ivec3(0xF8));
#elif PS_COLCLIP == 1 || PS_COLCLIP_HW == 1
C = vec3(ivec3(C) & ivec3(0xFF));
#endif
#elif PS_DST_FMT == FMT_16 && PS_DITHER != 3 && PS_BLEND_MIX == 0 && PS_BLEND_HW == 0
C = vec3(ivec3(C) & ivec3(0xF8));
#endif
}
void ps_blend(inout vec4 Color, inout vec4 As_rgba)
{
float As = As_rgba.a;
#if SW_BLEND
// PABE
#if PS_PABE
// As_rgba needed for accumulation blend to manipulate Cd.
// No blending so early exit
if (As < 1.0f)
{
As_rgba.rgb = vec3(0.0f);
return;
}
As_rgba.rgb = vec3(1.0f);
#endif
#if SW_BLEND_NEEDS_RT
vec4 RT = sample_from_rt();
#else
// Not used, but we define it to make the selection below simpler.
vec4 RT = vec4(0.0f);
#endif
#if PS_RTA_CORRECTION
float Ad = trunc(RT.a * 128.0f + 0.1f) / 128.0f;
#else
float Ad = trunc(RT.a * 255.0f + 0.1f) / 128.0f;
#endif
#if PS_SHUFFLE && SW_BLEND_NEEDS_RT
uvec4 denorm_rt = uvec4(RT);
#if (PS_PROCESS_BA & SHUFFLE_WRITE)
RT.r = float((denorm_rt.b << 3) & 0xF8u);
RT.g = float(((denorm_rt.b >> 2) & 0x38u) | ((denorm_rt.a << 6) & 0xC0u));
RT.b = float((denorm_rt.a << 1) & 0xF8u);
RT.a = float(denorm_rt.a & 0x80u);
#else
RT.r = float((denorm_rt.r << 3) & 0xF8u);
RT.g = float(((denorm_rt.r >> 2) & 0x38u) | ((denorm_rt.g << 6) & 0xC0u));
RT.b = float((denorm_rt.g << 1) & 0xF8u);
RT.a = float(denorm_rt.g & 0x80u);
#endif
#endif
// Let the compiler do its jobs !
#if PS_COLCLIP_HW == 1
vec3 Cd = trunc(RT.rgb * 65535.0f);
#else
vec3 Cd = trunc(RT.rgb * 255.0f + 0.1f);
#endif
vec3 Cs = Color.rgb;
#if PS_BLEND_A == 0
vec3 A = Cs;
#elif PS_BLEND_A == 1
vec3 A = Cd;
#else
vec3 A = vec3(0.0f);
#endif
#if PS_BLEND_B == 0
vec3 B = Cs;
#elif PS_BLEND_B == 1
vec3 B = Cd;
#else
vec3 B = vec3(0.0f);
#endif
#if PS_BLEND_C == 0
float C = As;
#elif PS_BLEND_C == 1
float C = Ad;
#else
float C = Af;
#endif
#if PS_BLEND_D == 0
vec3 D = Cs;
#elif PS_BLEND_D == 1
vec3 D = Cd;
#else
vec3 D = vec3(0.0f);
#endif
// As/Af clamp alpha for Blend mix
// We shouldn't clamp blend mix with blend hw 1 as we want alpha higher
float C_clamped = C;
#if PS_BLEND_MIX > 0 && PS_BLEND_HW != 1 && PS_BLEND_HW != 2
C_clamped = min(C_clamped, 1.0f);
#endif
#if PS_BLEND_A == PS_BLEND_B
Color.rgb = D;
// In blend_mix, HW adds on some alpha factor * dst.
// Truncating here wouldn't quite get the right result because it prevents the <1 bit here from combining with a <1 bit in dst to form a ≥1 amount that pushes over the truncation.
// Instead, apply an offset to convert HW's round to a floor.
// Since alpha is in 1/128 increments, subtracting (0.5 - 0.5/128 == 127/256) would get us what we want if GPUs blended in full precision.
// But they don't. Details here: https://github.com/PCSX2/pcsx2/pull/6809#issuecomment-1211473399
// Based on the scripts at the above link, the ideal choice for Intel GPUs is 126/256, AMD 120/256. Nvidia is a lost cause.
// 124/256 seems like a reasonable compromise, providing the correct answer 99.3% of the time on Intel (vs 99.6% for 126/256), and 97% of the time on AMD (vs 97.4% for 120/256).
#elif PS_BLEND_MIX == 2
Color.rgb = ((A - B) * C_clamped + D) + (124.0f/256.0f);
#elif PS_BLEND_MIX == 1
Color.rgb = ((A - B) * C_clamped + D) - (124.0f/256.0f);
#else
Color.rgb = trunc((A - B) * C + D);
#endif
#if PS_BLEND_HW == 1
// As or Af
As_rgba.rgb = vec3(C);
// Subtract 1 for alpha to compensate for the changed equation,
// if c.rgb > 255.0f then we further need to adjust alpha accordingly,
// we pick the lowest overflow from all colors because it's the safest,
// we divide by 255 the color because we don't know Cd value,
// changed alpha should only be done for hw blend.
vec3 alpha_compensate = max(vec3(1.0f), Color.rgb / vec3(255.0f));
As_rgba.rgb -= alpha_compensate;
#elif PS_BLEND_HW == 2
// Since we can't do Cd*(Alpha + 1) - Cs*Alpha in hw blend
// what we can do is adjust the Cs value that will be
// subtracted, this way we can get a better result in hw blend.
// Result is still wrong but less wrong than before.
float division_alpha = 1.0f + C;
Color.rgb /= vec3(division_alpha);
#elif PS_BLEND_HW == 3
// As, Ad or Af clamped.
As_rgba.rgb = vec3(C_clamped);
// Cs*(Alpha + 1) might overflow, if it does then adjust alpha value
// that is sent on second output to compensate.
vec3 overflow_check = (Color.rgb - vec3(255.0f)) / 255.0f;
vec3 alpha_compensate = max(vec3(0.0f), overflow_check);
As_rgba.rgb -= alpha_compensate;
#endif
#else
#if PS_BLEND_C == 2
vec3 Alpha = vec3(Af);
#else
vec3 Alpha = vec3(As);
#endif
// Needed for Cd * (As/Ad/F + 1) blending modes
#if PS_BLEND_HW == 1
Color.rgb = vec3(255.0f);
#elif PS_BLEND_HW == 2
// Cd*As,Cd*Ad or Cd*F
Color.rgb = max(vec3(0.0f), (Alpha - vec3(1.0f)));
Color.rgb *= vec3(255.0f);
#elif PS_BLEND_HW == 3 && PS_RTA_CORRECTION == 0
// Needed for Cs*Ad, Cs*Ad + Cd, Cd - Cs*Ad
// Multiply Color.rgb by (255/128) to compensate for wrong Ad/255 value when rgb are below 128.
// When any color channel is higher than 128 then adjust the compensation automatically
// to give us more accurate colors, otherwise they will be wrong.
// The higher the value (>128) the lower the compensation will be.
float max_color = max(max(Color.r, Color.g), Color.b);
float color_compensate = 255.0f / max(128.0f, max_color);
Color.rgb *= vec3(color_compensate);
#elif PS_BLEND_HW == 4
// Needed for Cd * (1 - Ad) and Cd*(1 + Alpha).
As_rgba.rgb = Alpha * vec3(128.0f / 255.0f);
Color.rgb = vec3(127.5f);
#elif PS_BLEND_HW == 5
// Needed for Cs*Alpha + Cd*(1 - Alpha).
Alpha *= vec3(128.0f / 255.0f);
As_rgba.rgb = (Alpha - vec3(0.5f));
Color.rgb = (Color.rgb * Alpha);
#elif PS_BLEND_HW == 6
// Needed for Cd*Alpha + Cs*(1 - Alpha).
Alpha *= vec3(128.0f / 255.0f);
As_rgba.rgb = Alpha;
Color.rgb *= (Alpha - vec3(0.5f));
#endif
#endif
}
void ps_main()
{
float input_z = gl_FragCoord.z;
// Must floor before depth testing.
#if PS_ZFLOOR
input_z = floor(input_z * exp2(32.0f)) * exp2(-32.0f);
#endif
#if PS_ZTST == ZTST_GEQUAL
if (input_z < sample_from_depth().r)
discard;
#elif PS_ZTST == ZTST_GREATER
if (input_z <= sample_from_depth().r)
discard;
#endif
#if PS_SCANMSK & 2
// fail depth test on prohibited lines
if ((int(gl_FragCoord.y) & 1) == (PS_SCANMSK & 1))
discard;
#endif
#if PS_DATE >= 5
#if PS_WRITE_RG == 1
// Pseudo 16 bits access.
float rt_a = sample_from_rt().g;
#else
float rt_a = sample_from_rt().a;
#endif
#if (PS_DATE & 3) == 1
// DATM == 0: Pixel with alpha equal to 1 will failed
#if PS_RTA_CORRECTION
bool bad = (254.5f / 255.0f) < rt_a;
#else
bool bad = (127.5f / 255.0f) < rt_a;
#endif
#elif (PS_DATE & 3) == 2
// DATM == 1: Pixel with alpha equal to 0 will failed
#if PS_RTA_CORRECTION
bool bad = rt_a < (254.5f / 255.0f);
#else
bool bad = rt_a < (127.5f / 255.0f);
#endif
#endif
if (bad) {
discard;
}
#endif
#if PS_DATE == 3
int stencil_ceil = int(texelFetch(img_prim_min, ivec2(gl_FragCoord.xy), 0).r);
// Note gl_PrimitiveID == stencil_ceil will be the primitive that will update
// the bad alpha value so we must keep it.
if (gl_PrimitiveID > stencil_ceil) {
discard;
}
#endif
vec4 C = ps_color();
#if PS_AA1
float cov = clamp(1.0f - abs(PSin.inv_cov), 0.0f, 1.0f);
#if PS_ABE
if (floor(C.a) == 128.0f) // The coverage is only used if the fragment alpha is 128.
C.a = 128.0f * cov;
#else
C.a = 128.0f * cov;
#endif
#elif PS_FIXED_ONE_A
// AA (Fixed one) will output a coverage of 1.0 as alpha
C.a = 128.0f;
#endif
bool atst_pass = atst(C);
#if PS_AFAIL == AFAIL_KEEP
if (!atst_pass)
discard;
#endif
#if SW_AD_TO_HW
#if PS_RTA_CORRECTION
vec4 RT = trunc(sample_from_rt() * 128.0f + 0.1f);
#else
vec4 RT = trunc(sample_from_rt() * 255.0f + 0.1f);
#endif
vec4 alpha_blend = vec4(RT.a / 128.0f);
#else
vec4 alpha_blend = vec4(C.a / 128.0f);
#endif
// Correct the ALPHA value based on the output format
#if (PS_DST_FMT == FMT_16)
float A_one = 128.0f; // alpha output will be 0x80
C.a = (PS_FBA != 0) ? A_one : step(128.0f, C.a) * A_one;
#elif (PS_DST_FMT == FMT_32) && (PS_FBA != 0)
if(C.a < 128.0f) C.a += 128.0f;
#endif
// Get first primitive that will write a failling alpha value
#if PS_DATE == 1
// DATM == 0
// Pixel with alpha equal to 1 will failed (128-255)
SV_Target0 = (C.a > 127.5f) ? vec4(gl_PrimitiveID) : vec4(0x7FFFFFFF);
return;
#elif PS_DATE == 2
// DATM == 1
// Pixel with alpha equal to 0 will failed (0-127)
SV_Target0 = (C.a < 127.5f) ? vec4(gl_PrimitiveID) : vec4(0x7FFFFFFF);
return;
#endif
ps_blend(C, alpha_blend);
#if PS_SHUFFLE
#if !PS_READ16_SRC && !PS_SHUFFLE_SAME && !(PS_PROCESS_BA == SHUFFLE_READWRITE && PS_PROCESS_RG == SHUFFLE_READWRITE)
uvec4 denorm_c_after = uvec4(C);
#if (PS_PROCESS_BA & SHUFFLE_READ)
C.b = float(((denorm_c_after.r >> 3) & 0x1Fu) | ((denorm_c_after.g << 2) & 0xE0u));
C.a = float(((denorm_c_after.g >> 6) & 0x3u) | ((denorm_c_after.b >> 1) & 0x7Cu) | (denorm_c_after.a & 0x80u));
#else
C.r = float(((denorm_c_after.r >> 3) & 0x1Fu) | ((denorm_c_after.g << 2) & 0xE0u));
C.g = float(((denorm_c_after.g >> 6) & 0x3u) | ((denorm_c_after.b >> 1) & 0x7Cu) | (denorm_c_after.a & 0x80u));
#endif
#endif
// Special case for 32bit input and 16bit output, shuffle used by The Godfather
#if PS_SHUFFLE_SAME
uvec4 denorm_c = uvec4(C);
#if (PS_PROCESS_BA & SHUFFLE_READ)
C = vec4(float((denorm_c.b & 0x7Fu) | (denorm_c.a & 0x80u)));
#else
C.ga = C.rg;
#endif
// Copy of a 16bit source in to this target
#elif PS_READ16_SRC
uvec4 denorm_c = uvec4(C);
uvec2 denorm_TA = uvec2(vec2(TA.xy) * 255.0f + 0.5f);
C.rb = vec2(float((denorm_c.r >> 3) | (((denorm_c.g >> 3) & 0x7u) << 5)));
C.ga = vec2(float((denorm_c.g >> 6) | ((denorm_c.b >> 3) << 2) | (denorm_TA.x & 0x80u)));
#elif PS_SHUFFLE_ACROSS
#if(PS_PROCESS_BA == SHUFFLE_READWRITE && PS_PROCESS_RG == SHUFFLE_READWRITE)
C.br = C.rb;
C.ag = C.ga;
#elif(PS_PROCESS_BA & SHUFFLE_READ)
C.rb = C.bb;
C.ga = C.aa;
#else
C.rb = C.rr;
C.ga = C.gg;
#endif // PS_PROCESS_BA
#endif // PS_SHUFFLE_ACROSS
#endif // PS_SHUFFLE
ps_dither(C.rgb, alpha_blend.a);
// Color clamp/wrap needs to be done after sw blending and dithering
ps_color_clamp_wrap(C.rgb);
ps_fbmask(C);
#if (PS_AFAIL == AFAIL_RGB_ONLY_DSB) && !PS_NO_COLOR1
// Use alpha blend factor to determine whether to update A.
alpha_blend.a = float(atst_pass);
#endif
#if !PS_NO_COLOR
#if PS_RTA_CORRECTION
C.a = C.a / 128.0f;
#else
C.a = C.a / 255.0f;
#endif
#if PS_COLCLIP_HW == 1
C.rgb = vec3(C.rgb / 65535.0f);
#else
C.rgb = C.rgb / 255.0f;
#endif
// Alpha test with feedback
#if PS_AFAIL == AFAIL_FB_ONLY
if (!atst_pass)
input_z = sample_from_depth().r;
#elif PS_AFAIL == AFAIL_ZB_ONLY
if (!atst_pass)
C = sample_from_rt();
#elif (PS_AFAIL == AFAIL_RGB_ONLY || PS_AFAIL == AFAIL_RGB_ONLY_SW_Z)
if (!atst_pass)
{
C.a = sample_from_rt().a;
#if PS_AFAIL == AFAIL_RGB_ONLY_SW_Z
input_z = sample_from_depth().r;
#endif
}
#endif
// Warning: do not write SV_Target0 until the end since the value might be needed for
// FB fetch in sample_from_rt().
SV_Target0 = C;
#if !PS_NO_COLOR1
SV_Target1 = alpha_blend;
#endif
#endif
#if PS_ZCLAMP
input_z = min(input_z, MaxDepthPS);
#endif
#if PS_AA1 == PS_AA1_TRIANGLE_SW_Z
if (!bool(PSin.interior))
input_z = sample_from_depth().r; // No depth update for triangle edges.
#endif
#if ZWRITE
#if SW_DEPTH && PS_NO_COLOR1 && (DEPTH_FEEDBACK_SUPPORT == 2)
// Depth as color write. For depth as color feedback we write to both
// color copy and real depth to avoid having to copy back to real depth.
// Warning: do not write SV_Target1 until the end since the value might
// be needed for FB fetch in sample_from_depth().
SV_Target1 = input_z;
#endif
// Standard depth write.
gl_FragDepth = input_z;
#endif
}
Reference in New Issue View Git Blame Copy Permalink