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dolphin/Source/Core/VideoCommon/VertexShaderGen.cpp
Michael Maltese d10d09ccc1 VideoCommon: rework anamorphic widescreen heuristic 
Some widescreen hacks (see below) properly force anamorphic output, but
don't make the last projection in a frame 16:9, so Dolphin doesn't
display it correctly.

This changes the heuristic code to assume a frame is anamorphic based on
the total number of vertex flushes in 4:3 and 16:9 projections that
frame. It also adds a bit of "aspect ratio inertia" by making it harder
to switch aspect ratios, which takes care of aspect ratio flickering
that some games / widescreen hacks would be susceptible with the new
logic.

I've tested this on SSX Tricky's native anamorphic support, Tom Clancy's
Splinter Cell (it stayed in 4:3 the whole time), and on the following
widescreen hacks for which the heuristic doesn't currently work:

Paper Mario: The Thousand-Year Door (Gecko widescreen code from Nintendont)
C202F310 00000003
3DC08042 3DE03FD8
91EEF6D8 4E800020
60000000 00000000
04199598 4E800020
C200F500 00000004
3DE08082 3DC0402B
61CE12A2 91CFA1BC
60000000 387D015C
60000000 00000000
C200F508 00000004
3DE08082 3DC04063
61CEE8D3 91CFA1BC
60000000 7FC3F378
60000000 00000000

The Simpsons: Hit & Run (AR widescreen code from the wiki)
04004600 C002A604
04004604 C09F0014
04004608 FC002040
0400460C 4082000C
04004610 C002A608
04004614 EC630032
04004618 48220508
04041A5C 38600001
04224344 C002A60C
04224B1C 4BDDFAE4
044786B0 3FAAAAAB
04479F28 3FA33333
2017-04-05 17:23:16 -07:00

534 lines
20 KiB
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// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <cstring>
#include "Common/Assert.h"
#include "Common/CommonTypes.h"
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/LightingShaderGen.h"
#include "VideoCommon/NativeVertexFormat.h"
#include "VideoCommon/VertexLoaderManager.h"
#include "VideoCommon/VertexShaderGen.h"
#include "VideoCommon/VideoCommon.h"
#include "VideoCommon/VideoConfig.h"
#include "VideoCommon/XFMemory.h"
VertexShaderUid GetVertexShaderUid()
{
VertexShaderUid out;
vertex_shader_uid_data* uid_data = out.GetUidData<vertex_shader_uid_data>();
memset(uid_data, 0, sizeof(*uid_data));
_assert_(bpmem.genMode.numtexgens == xfmem.numTexGen.numTexGens);
_assert_(bpmem.genMode.numcolchans == xfmem.numChan.numColorChans);
uid_data->numTexGens = xfmem.numTexGen.numTexGens;
uid_data->components = VertexLoaderManager::g_current_components;
uid_data->pixel_lighting = g_ActiveConfig.bEnablePixelLighting;
uid_data->vertex_rounding =
g_ActiveConfig.bVertexRounding && g_ActiveConfig.iEFBScale != SCALE_1X;
uid_data->msaa = g_ActiveConfig.iMultisamples > 1;
uid_data->ssaa = g_ActiveConfig.iMultisamples > 1 && g_ActiveConfig.bSSAA;
uid_data->numColorChans = xfmem.numChan.numColorChans;
GetLightingShaderUid(uid_data->lighting);
// transform texcoords
for (unsigned int i = 0; i < uid_data->numTexGens; ++i)
{
auto& texinfo = uid_data->texMtxInfo[i];
texinfo.sourcerow = xfmem.texMtxInfo[i].sourcerow;
texinfo.texgentype = xfmem.texMtxInfo[i].texgentype;
texinfo.inputform = xfmem.texMtxInfo[i].inputform;
// first transformation
switch (texinfo.texgentype)
{
case XF_TEXGEN_EMBOSS_MAP: // calculate tex coords into bump map
if (uid_data->components & (VB_HAS_NRM1 | VB_HAS_NRM2))
{
// transform the light dir into tangent space
texinfo.embosslightshift = xfmem.texMtxInfo[i].embosslightshift;
texinfo.embosssourceshift = xfmem.texMtxInfo[i].embosssourceshift;
}
else
{
texinfo.embosssourceshift = xfmem.texMtxInfo[i].embosssourceshift;
}
break;
case XF_TEXGEN_COLOR_STRGBC0:
case XF_TEXGEN_COLOR_STRGBC1:
break;
case XF_TEXGEN_REGULAR:
default:
uid_data->texMtxInfo_n_projection |= xfmem.texMtxInfo[i].projection << i;
break;
}
uid_data->dualTexTrans_enabled = xfmem.dualTexTrans.enabled;
// CHECKME: does this only work for regular tex gen types?
if (uid_data->dualTexTrans_enabled && texinfo.texgentype == XF_TEXGEN_REGULAR)
{
auto& postInfo = uid_data->postMtxInfo[i];
postInfo.index = xfmem.postMtxInfo[i].index;
postInfo.normalize = xfmem.postMtxInfo[i].normalize;
}
}
return out;
}
ShaderCode GenerateVertexShaderCode(APIType api_type, const vertex_shader_uid_data* uid_data)
{
ShaderCode out;
out.Write("%s", s_lighting_struct);
// uniforms
if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
out.Write("UBO_BINDING(std140, 2) uniform VSBlock {\n");
else
out.Write("cbuffer VSBlock {\n");
out.Write(s_shader_uniforms);
out.Write("};\n");
out.Write("struct VS_OUTPUT {\n");
GenerateVSOutputMembers(out, api_type, uid_data->numTexGens, uid_data->pixel_lighting, "");
out.Write("};\n");
if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
{
out.Write("ATTRIBUTE_LOCATION(%d) in float4 rawpos;\n", SHADER_POSITION_ATTRIB);
if (uid_data->components & VB_HAS_POSMTXIDX)
out.Write("ATTRIBUTE_LOCATION(%d) in uint4 posmtx;\n", SHADER_POSMTX_ATTRIB);
if (uid_data->components & VB_HAS_NRM0)
out.Write("ATTRIBUTE_LOCATION(%d) in float3 rawnorm0;\n", SHADER_NORM0_ATTRIB);
if (uid_data->components & VB_HAS_NRM1)
out.Write("ATTRIBUTE_LOCATION(%d) in float3 rawnorm1;\n", SHADER_NORM1_ATTRIB);
if (uid_data->components & VB_HAS_NRM2)
out.Write("ATTRIBUTE_LOCATION(%d) in float3 rawnorm2;\n", SHADER_NORM2_ATTRIB);
if (uid_data->components & VB_HAS_COL0)
out.Write("ATTRIBUTE_LOCATION(%d) in float4 color0;\n", SHADER_COLOR0_ATTRIB);
if (uid_data->components & VB_HAS_COL1)
out.Write("ATTRIBUTE_LOCATION(%d) in float4 color1;\n", SHADER_COLOR1_ATTRIB);
for (int i = 0; i < 8; ++i)
{
u32 hastexmtx = (uid_data->components & (VB_HAS_TEXMTXIDX0 << i));
if ((uid_data->components & (VB_HAS_UV0 << i)) || hastexmtx)
{
out.Write("ATTRIBUTE_LOCATION(%d) in float%d tex%d;\n", SHADER_TEXTURE0_ATTRIB + i,
hastexmtx ? 3 : 2, i);
}
}
// We need to always use output blocks for Vulkan, but geometry shaders are also optional.
if (g_ActiveConfig.backend_info.bSupportsGeometryShaders || api_type == APIType::Vulkan)
{
out.Write("VARYING_LOCATION(0) out VertexData {\n");
GenerateVSOutputMembers(
out, api_type, uid_data->numTexGens, uid_data->pixel_lighting,
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa, true, false));
out.Write("} vs;\n");
}
else
{
// Let's set up attributes
for (u32 i = 0; i < 8; ++i)
{
if (i < uid_data->numTexGens)
{
out.Write("%s out float3 uv%u;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa), i);
}
}
out.Write("%s out float4 clipPos;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa));
if (uid_data->pixel_lighting)
{
out.Write("%s out float3 Normal;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa));
out.Write("%s out float3 WorldPos;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa));
}
out.Write("%s out float4 colors_0;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa));
out.Write("%s out float4 colors_1;\n",
GetInterpolationQualifier(uid_data->msaa, uid_data->ssaa));
}
out.Write("void main()\n{\n");
}
else // D3D
{
out.Write("VS_OUTPUT main(\n");
// inputs
if (uid_data->components & VB_HAS_NRM0)
out.Write(" float3 rawnorm0 : NORMAL0,\n");
if (uid_data->components & VB_HAS_NRM1)
out.Write(" float3 rawnorm1 : NORMAL1,\n");
if (uid_data->components & VB_HAS_NRM2)
out.Write(" float3 rawnorm2 : NORMAL2,\n");
if (uid_data->components & VB_HAS_COL0)
out.Write(" float4 color0 : COLOR0,\n");
if (uid_data->components & VB_HAS_COL1)
out.Write(" float4 color1 : COLOR1,\n");
for (int i = 0; i < 8; ++i)
{
u32 hastexmtx = (uid_data->components & (VB_HAS_TEXMTXIDX0 << i));
if ((uid_data->components & (VB_HAS_UV0 << i)) || hastexmtx)
out.Write(" float%d tex%d : TEXCOORD%d,\n", hastexmtx ? 3 : 2, i, i);
}
if (uid_data->components & VB_HAS_POSMTXIDX)
out.Write(" uint4 posmtx : BLENDINDICES,\n");
out.Write(" float4 rawpos : POSITION) {\n");
}
out.Write("VS_OUTPUT o;\n");
// transforms
if (uid_data->components & VB_HAS_POSMTXIDX)
{
out.Write("int posidx = int(posmtx.r);\n");
out.Write("float4 pos = float4(dot(" I_TRANSFORMMATRICES
"[posidx], rawpos), dot(" I_TRANSFORMMATRICES
"[posidx+1], rawpos), dot(" I_TRANSFORMMATRICES "[posidx+2], rawpos), 1);\n");
if (uid_data->components & VB_HAS_NRMALL)
{
out.Write("int normidx = posidx & 31;\n");
out.Write("float3 N0 = " I_NORMALMATRICES "[normidx].xyz, N1 = " I_NORMALMATRICES
"[normidx+1].xyz, N2 = " I_NORMALMATRICES "[normidx+2].xyz;\n");
}
if (uid_data->components & VB_HAS_NRM0)
out.Write("float3 _norm0 = normalize(float3(dot(N0, rawnorm0), dot(N1, rawnorm0), dot(N2, "
"rawnorm0)));\n");
if (uid_data->components & VB_HAS_NRM1)
out.Write(
"float3 _norm1 = float3(dot(N0, rawnorm1), dot(N1, rawnorm1), dot(N2, rawnorm1));\n");
if (uid_data->components & VB_HAS_NRM2)
out.Write(
"float3 _norm2 = float3(dot(N0, rawnorm2), dot(N1, rawnorm2), dot(N2, rawnorm2));\n");
}
else
{
out.Write("float4 pos = float4(dot(" I_POSNORMALMATRIX "[0], rawpos), dot(" I_POSNORMALMATRIX
"[1], rawpos), dot(" I_POSNORMALMATRIX "[2], rawpos), 1.0);\n");
if (uid_data->components & VB_HAS_NRM0)
out.Write("float3 _norm0 = normalize(float3(dot(" I_POSNORMALMATRIX
"[3].xyz, rawnorm0), dot(" I_POSNORMALMATRIX
"[4].xyz, rawnorm0), dot(" I_POSNORMALMATRIX "[5].xyz, rawnorm0)));\n");
if (uid_data->components & VB_HAS_NRM1)
out.Write("float3 _norm1 = float3(dot(" I_POSNORMALMATRIX
"[3].xyz, rawnorm1), dot(" I_POSNORMALMATRIX
"[4].xyz, rawnorm1), dot(" I_POSNORMALMATRIX "[5].xyz, rawnorm1));\n");
if (uid_data->components & VB_HAS_NRM2)
out.Write("float3 _norm2 = float3(dot(" I_POSNORMALMATRIX
"[3].xyz, rawnorm2), dot(" I_POSNORMALMATRIX
"[4].xyz, rawnorm2), dot(" I_POSNORMALMATRIX "[5].xyz, rawnorm2));\n");
}
if (!(uid_data->components & VB_HAS_NRM0))
out.Write("float3 _norm0 = float3(0.0, 0.0, 0.0);\n");
out.Write("o.pos = float4(dot(" I_PROJECTION "[0], pos), dot(" I_PROJECTION
"[1], pos), dot(" I_PROJECTION "[2], pos), dot(" I_PROJECTION "[3], pos));\n");
out.Write("int4 lacc;\n"
"float3 ldir, h, cosAttn, distAttn;\n"
"float dist, dist2, attn;\n");
if (uid_data->numColorChans == 0)
{
if (uid_data->components & VB_HAS_COL0)
out.Write("o.colors_0 = color0;\n");
else
out.Write("o.colors_0 = float4(1.0, 1.0, 1.0, 1.0);\n");
}
GenerateLightingShaderCode(out, uid_data->lighting, uid_data->components, uid_data->numColorChans,
"color", "o.colors_");
if (uid_data->numColorChans < 2)
{
if (uid_data->components & VB_HAS_COL1)
out.Write("o.colors_1 = color1;\n");
else
out.Write("o.colors_1 = o.colors_0;\n");
}
// transform texcoords
out.Write("float4 coord = float4(0.0, 0.0, 1.0, 1.0);\n");
for (unsigned int i = 0; i < uid_data->numTexGens; ++i)
{
auto& texinfo = uid_data->texMtxInfo[i];
out.Write("{\n");
out.Write("coord = float4(0.0, 0.0, 1.0, 1.0);\n");
switch (texinfo.sourcerow)
{
case XF_SRCGEOM_INROW:
out.Write("coord.xyz = rawpos.xyz;\n");
break;
case XF_SRCNORMAL_INROW:
if (uid_data->components & VB_HAS_NRM0)
{
out.Write("coord.xyz = rawnorm0.xyz;\n");
}
break;
case XF_SRCCOLORS_INROW:
_assert_(texinfo.texgentype == XF_TEXGEN_COLOR_STRGBC0 ||
texinfo.texgentype == XF_TEXGEN_COLOR_STRGBC1);
break;
case XF_SRCBINORMAL_T_INROW:
if (uid_data->components & VB_HAS_NRM1)
{
out.Write("coord.xyz = rawnorm1.xyz;\n");
}
break;
case XF_SRCBINORMAL_B_INROW:
if (uid_data->components & VB_HAS_NRM2)
{
out.Write("coord.xyz = rawnorm2.xyz;\n");
}
break;
default:
_assert_(texinfo.sourcerow <= XF_SRCTEX7_INROW);
if (uid_data->components & (VB_HAS_UV0 << (texinfo.sourcerow - XF_SRCTEX0_INROW)))
out.Write("coord = float4(tex%d.x, tex%d.y, 1.0, 1.0);\n",
texinfo.sourcerow - XF_SRCTEX0_INROW, texinfo.sourcerow - XF_SRCTEX0_INROW);
break;
}
// Input form of AB11 sets z element to 1.0
if (texinfo.inputform == XF_TEXINPUT_AB11)
out.Write("coord.z = 1.0;\n");
// first transformation
switch (texinfo.texgentype)
{
case XF_TEXGEN_EMBOSS_MAP: // calculate tex coords into bump map
if (uid_data->components & (VB_HAS_NRM1 | VB_HAS_NRM2))
{
// transform the light dir into tangent space
out.Write("ldir = normalize(" LIGHT_POS ".xyz - pos.xyz);\n",
LIGHT_POS_PARAMS(texinfo.embosslightshift));
out.Write(
"o.tex%d.xyz = o.tex%d.xyz + float3(dot(ldir, _norm1), dot(ldir, _norm2), 0.0);\n", i,
texinfo.embosssourceshift);
}
else
{
// The following assert was triggered in House of the Dead Overkill and Star Wars Rogue
// Squadron 2
//_assert_(0); // should have normals
out.Write("o.tex%d.xyz = o.tex%d.xyz;\n", i, texinfo.embosssourceshift);
}
break;
case XF_TEXGEN_COLOR_STRGBC0:
out.Write("o.tex%d.xyz = float3(o.colors_0.x, o.colors_0.y, 1);\n", i);
break;
case XF_TEXGEN_COLOR_STRGBC1:
out.Write("o.tex%d.xyz = float3(o.colors_1.x, o.colors_1.y, 1);\n", i);
break;
case XF_TEXGEN_REGULAR:
default:
if (uid_data->components & (VB_HAS_TEXMTXIDX0 << i))
{
out.Write("int tmp = int(tex%d.z);\n", i);
if (((uid_data->texMtxInfo_n_projection >> i) & 1) == XF_TEXPROJ_STQ)
out.Write("o.tex%d.xyz = float3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES
"[tmp+1]), dot(coord, " I_TRANSFORMMATRICES "[tmp+2]));\n",
i);
else
out.Write("o.tex%d.xyz = float3(dot(coord, " I_TRANSFORMMATRICES
"[tmp]), dot(coord, " I_TRANSFORMMATRICES "[tmp+1]), 1);\n",
i);
}
else
{
if (((uid_data->texMtxInfo_n_projection >> i) & 1) == XF_TEXPROJ_STQ)
out.Write("o.tex%d.xyz = float3(dot(coord, " I_TEXMATRICES
"[%d]), dot(coord, " I_TEXMATRICES "[%d]), dot(coord, " I_TEXMATRICES
"[%d]));\n",
i, 3 * i, 3 * i + 1, 3 * i + 2);
else
out.Write("o.tex%d.xyz = float3(dot(coord, " I_TEXMATRICES
"[%d]), dot(coord, " I_TEXMATRICES "[%d]), 1);\n",
i, 3 * i, 3 * i + 1);
}
break;
}
// CHECKME: does this only work for regular tex gen types?
if (uid_data->dualTexTrans_enabled && texinfo.texgentype == XF_TEXGEN_REGULAR)
{
auto& postInfo = uid_data->postMtxInfo[i];
out.Write("float4 P0 = " I_POSTTRANSFORMMATRICES "[%d];\n"
"float4 P1 = " I_POSTTRANSFORMMATRICES "[%d];\n"
"float4 P2 = " I_POSTTRANSFORMMATRICES "[%d];\n",
postInfo.index & 0x3f, (postInfo.index + 1) & 0x3f, (postInfo.index + 2) & 0x3f);
if (postInfo.normalize)
out.Write("o.tex%d.xyz = normalize(o.tex%d.xyz);\n", i, i);
// multiply by postmatrix
out.Write("o.tex%d.xyz = float3(dot(P0.xyz, o.tex%d.xyz) + P0.w, dot(P1.xyz, o.tex%d.xyz) + "
"P1.w, dot(P2.xyz, o.tex%d.xyz) + P2.w);\n",
i, i, i, i);
}
// When q is 0, the GameCube appears to have a special case
// This can be seen in devkitPro's neheGX Lesson08 example for Wii
// Makes differences in Rogue Squadron 3 (Hoth sky) and The Last Story (shadow culling)
// TODO: check if this only affects XF_TEXGEN_REGULAR
if (texinfo.texgentype == XF_TEXGEN_REGULAR)
{
out.Write("if(o.tex%d.z == 0.0f)\n", i);
out.Write(
"\to.tex%d.xy = clamp(o.tex%d.xy / 2.0f, float2(-1.0f,-1.0f), float2(1.0f,1.0f));\n", i,
i);
}
out.Write("}\n");
}
// clipPos/w needs to be done in pixel shader, not here
out.Write("o.clipPos = o.pos;\n");
if (uid_data->pixel_lighting)
{
out.Write("o.Normal = _norm0;\n");
out.Write("o.WorldPos = pos.xyz;\n");
if (uid_data->components & VB_HAS_COL0)
out.Write("o.colors_0 = color0;\n");
if (uid_data->components & VB_HAS_COL1)
out.Write("o.colors_1 = color1;\n");
}
// If we can disable the incorrect depth clipping planes using depth clamping, then we can do
// our own depth clipping and calculate the depth range before the perspective divide if
// necessary.
if (g_ActiveConfig.backend_info.bSupportsDepthClamp)
{
// Since we're adjusting z for the depth range before the perspective divide, we have to do our
// own clipping. We want to clip so that -w <= z <= 0, which matches the console -1..0 range.
// We adjust our depth value for clipping purposes to match the perspective projection in the
// software backend, which is a hack to fix Sonic Adventure and Unleashed games.
out.Write("float clipDepth = o.pos.z * (1.0 - 1e-7);\n");
out.Write("o.clipDist0 = clipDepth + o.pos.w;\n"); // Near: z < -w
out.Write("o.clipDist1 = -clipDepth;\n"); // Far: z > 0
}
// Write the true depth value. If the game uses depth textures, then the pixel shader will
// override it with the correct values if not then early z culling will improve speed.
// There are two different ways to do this, when the depth range is oversized, we process
// the depth range in the vertex shader, if not we let the host driver handle it.
//
// Adjust z for the depth range. We're using an equation which incorperates a depth inversion,
// so we can map the console -1..0 range to the 0..1 range used in the depth buffer.
// We have to handle the depth range in the vertex shader instead of after the perspective
// divide, because some games will use a depth range larger than what is allowed by the
// graphics API. These large depth ranges will still be clipped to the 0..1 range, so these
// games effectively add a depth bias to the values written to the depth buffer.
out.Write("o.pos.z = o.pos.w * " I_PIXELCENTERCORRECTION ".w - "
"o.pos.z * " I_PIXELCENTERCORRECTION ".z;\n");
if (!g_ActiveConfig.backend_info.bSupportsClipControl)
{
// If the graphics API doesn't support a depth range of 0..1, then we need to map z to
// the -1..1 range. Unfortunately we have to use a substraction, which is a lossy floating-point
// operation that can introduce a round-trip error.
out.Write("o.pos.z = o.pos.z * 2.0 - o.pos.w;\n");
}
// Correct for negative viewports by mirroring all vertices. We need to negate the height here,
// since the viewport height is already negated by the render backend.
out.Write("o.pos.xy *= sign(" I_PIXELCENTERCORRECTION ".xy * float2(1.0, -1.0));\n");
// The console GPU places the pixel center at 7/12 in screen space unless
// antialiasing is enabled, while D3D and OpenGL place it at 0.5. This results
// in some primitives being placed one pixel too far to the bottom-right,
// which in turn can be critical if it happens for clear quads.
// Hence, we compensate for this pixel center difference so that primitives
// get rasterized correctly.
out.Write("o.pos.xy = o.pos.xy - o.pos.w * " I_PIXELCENTERCORRECTION ".xy;\n");
if (uid_data->vertex_rounding)
{
// By now our position is in clip space
// however, higher resolutions than the Wii outputs
// cause an additional pixel offset
// due to a higher pixel density
// we need to correct this by converting our
// clip-space position into the Wii's screen-space
// acquire the right pixel and then convert it back
out.Write("if (o.pos.w == 1.0f)\n");
out.Write("{\n");
out.Write("\tfloat ss_pixel_x = ((o.pos.x + 1.0f) * (" I_VIEWPORT_SIZE ".x * 0.5f));\n");
out.Write("\tfloat ss_pixel_y = ((o.pos.y + 1.0f) * (" I_VIEWPORT_SIZE ".y * 0.5f));\n");
out.Write("\tss_pixel_x = round(ss_pixel_x);\n");
out.Write("\tss_pixel_y = round(ss_pixel_y);\n");
out.Write("\to.pos.x = ((ss_pixel_x / (" I_VIEWPORT_SIZE ".x * 0.5f)) - 1.0f);\n");
out.Write("\to.pos.y = ((ss_pixel_y / (" I_VIEWPORT_SIZE ".y * 0.5f)) - 1.0f);\n");
out.Write("}\n");
}
if (api_type == APIType::OpenGL || api_type == APIType::Vulkan)
{
if (g_ActiveConfig.backend_info.bSupportsGeometryShaders || api_type == APIType::Vulkan)
{
AssignVSOutputMembers(out, "vs", "o", uid_data->numTexGens, uid_data->pixel_lighting);
}
else
{
// TODO: Pass interface blocks between shader stages even if geometry shaders
// are not supported, however that will require at least OpenGL 3.2 support.
for (unsigned int i = 0; i < uid_data->numTexGens; ++i)
out.Write("uv%d.xyz = o.tex%d;\n", i, i);
out.Write("clipPos = o.clipPos;\n");
if (uid_data->pixel_lighting)
{
out.Write("Normal = o.Normal;\n");
out.Write("WorldPos = o.WorldPos;\n");
}
out.Write("colors_0 = o.colors_0;\n");
out.Write("colors_1 = o.colors_1;\n");
}
if (g_ActiveConfig.backend_info.bSupportsDepthClamp)
{
out.Write("gl_ClipDistance[0] = o.clipDist0;\n");
out.Write("gl_ClipDistance[1] = o.clipDist1;\n");
}
// Vulkan NDC space has Y pointing down (right-handed NDC space).
if (api_type == APIType::Vulkan)
out.Write("gl_Position = float4(o.pos.x, -o.pos.y, o.pos.z, o.pos.w);\n");
else
out.Write("gl_Position = o.pos;\n");
}
else // D3D
{
out.Write("return o;\n");
}
out.Write("}\n");
return out;
}
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