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3251d78f89
dolphin/Source/Core/VideoCommon/VertexShaderGen.cpp
Ryan Houdek 3251d78f89 Add initial support for GLSL ES 3.10. 
GLSL ES 3.10 adds implicit support for the binding layout qualifier that we use.
Changes our GLSL version enums to bit values so we can check for both ES versions easily.
2014-04-03 00:46:09 -05:00

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17 KiB
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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <cmath>
#include <locale.h>
#ifdef __APPLE__
#include <xlocale.h>
#endif
#include "VideoCommon/BPMemory.h"
#include "VideoCommon/CPMemory.h"
#include "VideoCommon/DriverDetails.h"
#include "VideoCommon/LightingShaderGen.h"
#include "VideoCommon/NativeVertexFormat.h"
#include "VideoCommon/VertexShaderGen.h"
#include "VideoCommon/VideoConfig.h"
static char text[16768];
template<class T>
static void DefineVSOutputStructMember(T& object, API_TYPE api_type, const char* type, const char* name, int var_index, const char* semantic, int semantic_index = -1)
{
object.Write(" %s %s", type, name);
if (var_index != -1)
object.Write("%d", var_index);
if (api_type == API_OPENGL)
object.Write(";\n");
else // D3D
{
if (semantic_index != -1)
object.Write(" : %s%d;\n", semantic, semantic_index);
else
object.Write(" : %s;\n", semantic);
}
}
template<class T>
static inline void GenerateVSOutputStruct(T& object, API_TYPE api_type)
{
object.Write("struct VS_OUTPUT {\n");
DefineVSOutputStructMember(object, api_type, "float4", "pos", -1, "POSITION");
DefineVSOutputStructMember(object, api_type, "float4", "colors_", 0, "COLOR", 0);
DefineVSOutputStructMember(object, api_type, "float4", "colors_", 1, "COLOR", 1);
for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
DefineVSOutputStructMember(object, api_type, "float3", "tex", i, "TEXCOORD", i);
DefineVSOutputStructMember(object, api_type, "float4", "clipPos", -1, "TEXCOORD", xfregs.numTexGen.numTexGens);
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
DefineVSOutputStructMember(object, api_type, "float4", "Normal", -1, "TEXCOORD", xfregs.numTexGen.numTexGens + 1);
object.Write("};\n");
}
template<class T>
static inline void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
{
// Non-uid template parameters will write to the dummy data (=> gets optimized out)
vertex_shader_uid_data dummy_data;
vertex_shader_uid_data& uid_data = (&out.template GetUidData<vertex_shader_uid_data>() != nullptr)
? out.template GetUidData<vertex_shader_uid_data>() : dummy_data;
out.SetBuffer(text);
const bool is_writing_shadercode = (out.GetBuffer() != nullptr);
#ifndef ANDROID
locale_t locale;
locale_t old_locale;
if (is_writing_shadercode)
{
locale = newlocale(LC_NUMERIC_MASK, "C", nullptr); // New locale for compilation
old_locale = uselocale(locale); // Apply the locale for this thread
}
#endif
if (is_writing_shadercode)
text[sizeof(text) - 1] = 0x7C; // canary
_assert_(bpmem.genMode.numtexgens == xfregs.numTexGen.numTexGens);
_assert_(bpmem.genMode.numcolchans == xfregs.numChan.numColorChans);
// uniforms
if (api_type == API_OPENGL)
out.Write("layout(std140%s) uniform VSBlock {\n", g_ActiveConfig.backend_info.bSupportsBindingLayout ? ", binding = 2" : "");
DeclareUniform(out, api_type, C_POSNORMALMATRIX, "float4", I_POSNORMALMATRIX"[6]");
DeclareUniform(out, api_type, C_PROJECTION, "float4", I_PROJECTION"[4]");
DeclareUniform(out, api_type, C_MATERIALS, "int4", I_MATERIALS"[4]");
DeclareUniform(out, api_type, C_LIGHT_COLORS, "int4", I_LIGHT_COLORS"[8]");
DeclareUniform(out, api_type, C_LIGHTS, "float4", I_LIGHTS"[32]");
DeclareUniform(out, api_type, C_TEXMATRICES, "float4", I_TEXMATRICES"[24]");
DeclareUniform(out, api_type, C_TRANSFORMMATRICES, "float4", I_TRANSFORMMATRICES"[64]");
DeclareUniform(out, api_type, C_NORMALMATRICES, "float4", I_NORMALMATRICES"[32]");
DeclareUniform(out, api_type, C_POSTTRANSFORMMATRICES, "float4", I_POSTTRANSFORMMATRICES"[64]");
DeclareUniform(out, api_type, C_DEPTHPARAMS, "float4", I_DEPTHPARAMS);
if (api_type == API_OPENGL)
out.Write("};\n");
GenerateVSOutputStruct(out, api_type);
uid_data.numTexGens = xfregs.numTexGen.numTexGens;
uid_data.components = components;
uid_data.pixel_lighting = (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting);
if (api_type == API_OPENGL)
{
out.Write("in float4 rawpos; // ATTR%d,\n", SHADER_POSITION_ATTRIB);
if (components & VB_HAS_POSMTXIDX)
out.Write("in float fposmtx; // ATTR%d,\n", SHADER_POSMTX_ATTRIB);
if (components & VB_HAS_NRM0)
out.Write("in float3 rawnorm0; // ATTR%d,\n", SHADER_NORM0_ATTRIB);
if (components & VB_HAS_NRM1)
out.Write("in float3 rawnorm1; // ATTR%d,\n", SHADER_NORM1_ATTRIB);
if (components & VB_HAS_NRM2)
out.Write("in float3 rawnorm2; // ATTR%d,\n", SHADER_NORM2_ATTRIB);
if (components & VB_HAS_COL0)
out.Write("in float4 color0; // ATTR%d,\n", SHADER_COLOR0_ATTRIB);
if (components & VB_HAS_COL1)
out.Write("in float4 color1; // ATTR%d,\n", SHADER_COLOR1_ATTRIB);
for (int i = 0; i < 8; ++i)
{
u32 hastexmtx = (components & (VB_HAS_TEXMTXIDX0<<i));
if ((components & (VB_HAS_UV0<<i)) || hastexmtx)
out.Write("in float%d tex%d; // ATTR%d,\n", hastexmtx ? 3 : 2, i, SHADER_TEXTURE0_ATTRIB + i);
}
// Let's set up attributes
for (size_t i = 0; i < 8; ++i)
{
if (i < xfregs.numTexGen.numTexGens)
{
out.Write("centroid out float3 uv%d_2;\n", i);
}
}
out.Write("centroid out float4 clipPos_2;\n");
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
out.Write("centroid out float4 Normal_2;\n");
out.Write("centroid out float4 colors_02;\n");
out.Write("centroid out float4 colors_12;\n");
out.Write("void main()\n{\n");
}
else // D3D
{
out.Write("VS_OUTPUT main(\n");
// inputs
if (components & VB_HAS_NRM0)
out.Write(" float3 rawnorm0 : NORMAL0,\n");
if (components & VB_HAS_NRM1)
out.Write(" float3 rawnorm1 : NORMAL1,\n");
if (components & VB_HAS_NRM2)
out.Write(" float3 rawnorm2 : NORMAL2,\n");
if (components & VB_HAS_COL0)
out.Write(" float4 color0 : COLOR0,\n");
if (components & VB_HAS_COL1)
out.Write(" float4 color1 : COLOR1,\n");
for (int i = 0; i < 8; ++i)
{
u32 hastexmtx = (components & (VB_HAS_TEXMTXIDX0<<i));
if ((components & (VB_HAS_UV0<<i)) || hastexmtx)
out.Write(" float%d tex%d : TEXCOORD%d,\n", hastexmtx ? 3 : 2, i, i);
}
if (components & VB_HAS_POSMTXIDX)
out.Write(" float fposmtx : BLENDINDICES,\n");
out.Write(" float4 rawpos : POSITION) {\n");
}
out.Write("VS_OUTPUT o;\n");
// transforms
if (components & VB_HAS_POSMTXIDX)
{
out.Write("int posmtx = int(fposmtx * 255.0);\n"); // TODO: Ugly, should use an integer instead
if (is_writing_shadercode && (DriverDetails::HasBug(DriverDetails::BUG_NODYNUBOACCESS) && !DriverDetails::HasBug(DriverDetails::BUG_ANNIHILATEDUBOS)) )
{
// This'll cause issues, but it can't be helped
out.Write("float4 pos = float4(dot(" I_TRANSFORMMATRICES"[0], rawpos), dot(" I_TRANSFORMMATRICES"[1], rawpos), dot(" I_TRANSFORMMATRICES"[2], rawpos), 1);\n");
if (components & VB_HAS_NRMALL)
out.Write("float3 N0 = " I_NORMALMATRICES"[0].xyz, N1 = " I_NORMALMATRICES"[1].xyz, N2 = " I_NORMALMATRICES"[2].xyz;\n");
}
else
{
out.Write("float4 pos = float4(dot(" I_TRANSFORMMATRICES"[posmtx], rawpos), dot(" I_TRANSFORMMATRICES"[posmtx+1], rawpos), dot(" I_TRANSFORMMATRICES"[posmtx+2], rawpos), 1);\n");
if (components & VB_HAS_NRMALL) {
out.Write("int normidx = posmtx >= 32 ? (posmtx-32) : posmtx;\n");
out.Write("float3 N0 = " I_NORMALMATRICES"[normidx].xyz, N1 = " I_NORMALMATRICES"[normidx+1].xyz, N2 = " I_NORMALMATRICES"[normidx+2].xyz;\n");
}
}
if (components & VB_HAS_NRM0)
out.Write("float3 _norm0 = normalize(float3(dot(N0, rawnorm0), dot(N1, rawnorm0), dot(N2, rawnorm0)));\n");
if (components & VB_HAS_NRM1)
out.Write("float3 _norm1 = float3(dot(N0, rawnorm1), dot(N1, rawnorm1), dot(N2, rawnorm1));\n");
if (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 (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 (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 (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 (!(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;\n"
"float dist, dist2, attn;\n");
uid_data.numColorChans = xfregs.numChan.numColorChans;
if (xfregs.numChan.numColorChans == 0)
{
if (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");
}
GenerateLightingShader<T>(out, uid_data.lighting, components, I_MATERIALS, I_LIGHT_COLORS, I_LIGHTS, "color", "o.colors_");
if (xfregs.numChan.numColorChans < 2)
{
if (components & VB_HAS_COL1)
out.Write("o.colors_1 = color1;\n");
else
out.Write("o.colors_1 = o.colors_0;\n");
}
// special case if only pos and tex coord 0 and tex coord input is AB11
// donko - this has caused problems in some games. removed for now.
bool texGenSpecialCase = false;
/*bool texGenSpecialCase =
((g_VtxDesc.Hex & 0x60600L) == g_VtxDesc.Hex) && // only pos and tex coord 0
(g_VtxDesc.Tex0Coord != NOT_PRESENT) &&
(xfregs.texcoords[0].texmtxinfo.inputform == XF_TEXINPUT_AB11);
*/
// transform texcoords
out.Write("float4 coord = float4(0.0, 0.0, 1.0, 1.0);\n");
for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
{
TexMtxInfo& texinfo = xfregs.texMtxInfo[i];
out.Write("{\n");
out.Write("coord = float4(0.0, 0.0, 1.0, 1.0);\n");
uid_data.texMtxInfo[i].sourcerow = xfregs.texMtxInfo[i].sourcerow;
switch (texinfo.sourcerow)
{
case XF_SRCGEOM_INROW:
_assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
out.Write("coord = rawpos;\n"); // pos.w is 1
break;
case XF_SRCNORMAL_INROW:
if (components & VB_HAS_NRM0)
{
_assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
out.Write("coord = float4(rawnorm0.xyz, 1.0);\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 (components & VB_HAS_NRM1)
{
_assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
out.Write("coord = float4(rawnorm1.xyz, 1.0);\n");
}
break;
case XF_SRCBINORMAL_B_INROW:
if (components & VB_HAS_NRM2)
{
_assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
out.Write("coord = float4(rawnorm2.xyz, 1.0);\n");
}
break;
default:
_assert_(texinfo.sourcerow <= XF_SRCTEX7_INROW);
if (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;
}
// first transformation
uid_data.texMtxInfo[i].texgentype = xfregs.texMtxInfo[i].texgentype;
switch (texinfo.texgentype)
{
case XF_TEXGEN_EMBOSS_MAP: // calculate tex coords into bump map
if (components & (VB_HAS_NRM1|VB_HAS_NRM2))
{
// transform the light dir into tangent space
uid_data.texMtxInfo[i].embosslightshift = xfregs.texMtxInfo[i].embosslightshift;
uid_data.texMtxInfo[i].embosssourceshift = xfregs.texMtxInfo[i].embosssourceshift;
out.Write("ldir = normalize(" LIGHT_POS".xyz - pos.xyz);\n", LIGHT_POS_PARAMS(I_LIGHTS, 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
{
_assert_(0); // should have normals
uid_data.texMtxInfo[i].embosssourceshift = xfregs.texMtxInfo[i].embosssourceshift;
out.Write("o.tex%d.xyz = o.tex%d.xyz;\n", i, texinfo.embosssourceshift);
}
break;
case XF_TEXGEN_COLOR_STRGBC0:
_assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
out.Write("o.tex%d.xyz = float3(o.colors_0.x, o.colors_0.y, 1);\n", i);
break;
case XF_TEXGEN_COLOR_STRGBC1:
_assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
out.Write("o.tex%d.xyz = float3(o.colors_1.x, o.colors_1.y, 1);\n", i);
break;
case XF_TEXGEN_REGULAR:
default:
uid_data.texMtxInfo_n_projection |= xfregs.texMtxInfo[i].projection << i;
if (components & (VB_HAS_TEXMTXIDX0<<i))
{
out.Write("int tmp = int(tex%d.z);\n", i);
if (texinfo.projection == 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 (texinfo.projection == 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;
}
uid_data.dualTexTrans_enabled = xfregs.dualTexTrans.enabled;
// CHECKME: does this only work for regular tex gen types?
if (xfregs.dualTexTrans.enabled && texinfo.texgentype == XF_TEXGEN_REGULAR)
{
const PostMtxInfo& postInfo = xfregs.postMtxInfo[i];
uid_data.postMtxInfo[i].index = xfregs.postMtxInfo[i].index;
int postidx = postInfo.index;
out.Write("float4 P0 = " I_POSTTRANSFORMMATRICES"[%d];\n"
"float4 P1 = " I_POSTTRANSFORMMATRICES"[%d];\n"
"float4 P2 = " I_POSTTRANSFORMMATRICES"[%d];\n",
postidx&0x3f, (postidx+1)&0x3f, (postidx+2)&0x3f);
if (texGenSpecialCase)
{
// no normalization
// q of input is 1
// q of output is unknown
// multiply by postmatrix
out.Write("o.tex%d.xyz = float3(dot(P0.xy, o.tex%d.xy) + P0.z + P0.w, dot(P1.xy, o.tex%d.xy) + P1.z + P1.w, 0.0);\n", i, i, i);
}
else
{
uid_data.postMtxInfo[i].normalize = xfregs.postMtxInfo[i].normalize;
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);
}
}
out.Write("}\n");
}
// clipPos/w needs to be done in pixel shader, not here
out.Write("o.clipPos = float4(pos.x,pos.y,o.pos.z,o.pos.w);\n");
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
out.Write("o.Normal = float4(_norm0.x,_norm0.y,_norm0.z,pos.z);\n");
if (components & VB_HAS_COL0)
out.Write("o.colors_0 = color0;\n");
if (components & VB_HAS_COL1)
out.Write("o.colors_1 = color1;\n");
}
//write the true depth value, if the game uses depth textures pixel shaders will override with the correct values
//if not early z culling will improve speed
if (api_type == API_D3D)
{
out.Write("o.pos.z = " I_DEPTHPARAMS".x * o.pos.w + o.pos.z * " I_DEPTHPARAMS".y;\n");
}
else // OGL
{
// this results in a scale from -1..0 to -1..1 after perspective
// divide
out.Write("o.pos.z = o.pos.w + o.pos.z * 2.0;\n");
// the next steps of the OGL pipeline are:
// (x_c,y_c,z_c,w_c) = o.pos //switch to OGL spec terminology
// clipping to -w_c <= (x_c,y_c,z_c) <= w_c
// (x_d,y_d,z_d) = (x_c,y_c,z_c)/w_c//perspective divide
// z_w = (f-n)/2*z_d + (n+f)/2
// z_w now contains the value to go to the 0..1 depth buffer
//trying to get the correct semantic while not using glDepthRange
//seems to get rather complicated
}
if (api_type == API_OPENGL)
{
// Bit ugly here
// TODO: Make pretty
// Will look better when we bind uniforms in GLSL 1.3
// clipPos/w needs to be done in pixel shader, not here
for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
out.Write(" uv%d_2.xyz = o.tex%d;\n", i, i);
out.Write(" clipPos_2 = o.clipPos;\n");
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
out.Write(" Normal_2 = o.Normal;\n");
out.Write("colors_02 = o.colors_0;\n");
out.Write("colors_12 = o.colors_1;\n");
out.Write("gl_Position = o.pos;\n");
out.Write("}\n");
}
else // D3D
{
out.Write("return o;\n}\n");
}
if (is_writing_shadercode)
{
if (text[sizeof(text) - 1] != 0x7C)
PanicAlert("VertexShader generator - buffer too small, canary has been eaten!");
#ifndef ANDROID
uselocale(old_locale); // restore locale
freelocale(locale);
#endif
}
}
void GetVertexShaderUid(VertexShaderUid& object, u32 components, API_TYPE api_type)
{
GenerateVertexShader<VertexShaderUid>(object, components, api_type);
}
void GenerateVertexShaderCode(VertexShaderCode& object, u32 components, API_TYPE api_type)
{
GenerateVertexShader<VertexShaderCode>(object, components, api_type);
}
void GenerateVSOutputStructForGS(ShaderCode& object, API_TYPE api_type)
{
GenerateVSOutputStruct<ShaderCode>(object, api_type);
}
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