piwalker/dolphin
1
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-23 22:29:39 -06:00
Code Issues Packages Projects Releases Wiki Activity

Split shader code generation for lighting into a separate file.

Browse Source 
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7088 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2011-02-05 23:57:12 +00:00
parent 986cd817de
commit 35edf1b236
9 changed files with 248 additions and 341 deletions
Download Patch File Download Diff File Expand all files Collapse all files

172
Source/Core/VideoCommon/Src/PixelShaderGen.cpp
View File

@ -20,6 +20,7 @@
#include <assert.h>
#include <locale.h>
#include "LightingShaderGen.h"
#include "PixelShaderGen.h"
#include "XFMemory.h" // for texture projection mode
#include "BPMemory.h"
@ -379,68 +380,6 @@ static void BuildSwapModeTable()
}
}
char *GeneratePixelLightShader(char *p, int index, const LitChannel& chan, const char *dest, int coloralpha)
{
const char* swizzle = "xyzw";
if (coloralpha == 1 ) swizzle = "xyz";
else if (coloralpha == 2 ) swizzle = "w";
if (!(chan.attnfunc & 1)) {
// atten disabled
switch (chan.diffusefunc) {
case LIGHTDIF_NONE:
WRITE(p, "%s.%s += "I_PLIGHTS".lights[%d].col.%s;\n", dest, swizzle, index, swizzle);
break;
case LIGHTDIF_SIGN:
case LIGHTDIF_CLAMP:
WRITE(p, "ldir = normalize("I_PLIGHTS".lights[%d].pos.xyz - pos.xyz);\n", index);
WRITE(p, "%s.%s += %sdot(ldir, _norm0)) * "I_PLIGHTS".lights[%d].col.%s;\n",
dest, swizzle, chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0f," :"(", index, swizzle);
break;
default: _assert_(0);
}
}
else { // spec and spot
if (chan.attnfunc == 3)
{ // spot
WRITE(p, "ldir = "I_PLIGHTS".lights[%d].pos.xyz - pos.xyz;\n", index);
WRITE(p, "dist2 = dot(ldir, ldir);\n"
"dist = sqrt(dist2);\n"
"ldir = ldir / dist;\n"
"attn = max(0.0f, dot(ldir, "I_PLIGHTS".lights[%d].dir.xyz));\n",index);
WRITE(p, "attn = max(0.0f, dot("I_PLIGHTS".lights[%d].cosatt.xyz, float3(1.0f, attn, attn*attn))) / dot("I_PLIGHTS".lights[%d].distatt.xyz, float3(1.0f,dist,dist2));\n", index, index);
}
else if (chan.attnfunc == 1)
{ // specular
WRITE(p, "ldir = normalize("I_PLIGHTS".lights[%d].pos.xyz);\n",index);
WRITE(p, "attn = (dot(_norm0,ldir) >= 0.0f) ? max(0.0f, dot(_norm0, "I_PLIGHTS".lights[%d].dir.xyz)) : 0.0f;\n", index);
WRITE(p, "attn = max(0.0f, dot("I_PLIGHTS".lights[%d].cosatt.xyz, float3(1,attn,attn*attn))) / dot("I_PLIGHTS".lights[%d].distatt.xyz, float3(1,attn,attn*attn));\n", index, index);
}
switch (chan.diffusefunc)
{
case LIGHTDIF_NONE:
WRITE(p, "%s.%s += attn * "I_PLIGHTS".lights[%d].col.%s;\n", dest, swizzle, index, swizzle);
break;
case LIGHTDIF_SIGN:
case LIGHTDIF_CLAMP:
WRITE(p, "%s.%s += attn * %sdot(ldir, _norm0)) * "I_PLIGHTS".lights[%d].col.%s;\n",
dest,
swizzle,
chan.diffusefunc != LIGHTDIF_SIGN ? "max(0.0f," :"(",
index,
swizzle);
break;
default: _assert_(0);
}
}
WRITE(p, "\n");
return p;
}
const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components)
{
setlocale(LC_NUMERIC, "C"); // Reset locale for compilation
@ -606,113 +545,8 @@ const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType
WRITE(p, "float4 mat, lacc;\n"
"float3 ldir, h;\n"
"float dist, dist2, attn;\n");
// lights/colors
for (unsigned int j = 0; j < xfregs.numChan.numColorChans; j++)
{
const LitChannel& color = xfregs.color[j];
const LitChannel& alpha = xfregs.alpha[j];
WRITE(p, "{\n");
if (color.matsource) {// from vertex
if (components & (VB_HAS_COL0 << j))
WRITE(p, "mat = colors_%d;\n", j);
else if (components & VB_HAS_COL0)
WRITE(p, "mat = colors_0;\n");
else
WRITE(p, "mat = float4(1.0f, 1.0f, 1.0f, 1.0f);\n");
}
else // from color
WRITE(p, "mat = "I_PMATERIALS".C%d;\n", j+2);
if (color.enablelighting) {
if (color.ambsource) { // from vertex
if (components & (VB_HAS_COL0<<j) )
WRITE(p, "lacc = colors_%d;\n", j);
else if (components & VB_HAS_COL0 )
WRITE(p, "lacc = colors_0;\n");
else
WRITE(p, "lacc = float4(0.0f, 0.0f, 0.0f, 0.0f);\n");
}
else // from color
WRITE(p, "lacc = "I_PMATERIALS".C%d;\n", j);
}
else
{
WRITE(p, "lacc = float4(1.0f, 1.0f, 1.0f, 1.0f);\n");
}
// check if alpha is different
if (alpha.matsource != color.matsource) {
if (alpha.matsource) {// from vertex
if (components & (VB_HAS_COL0<<j))
WRITE(p, "mat.w = colors_%d.w;\n", j);
else if (components & VB_HAS_COL0)
WRITE(p, "mat.w = colors_0.w;\n");
else WRITE(p, "mat.w = 1.0f;\n");
}
else // from color
WRITE(p, "mat.w = "I_PMATERIALS".C%d.w;\n", j+2);
}
if (alpha.enablelighting)
{
if (alpha.ambsource) {// from vertex
if (components & (VB_HAS_COL0<<j) )
WRITE(p, "lacc.w = colors_%d.w;\n", j);
else if (components & VB_HAS_COL0 )
WRITE(p, "lacc.w = colors_0.w;\n");
else
WRITE(p, "lacc.w = 0.0f;\n");
}
else // from color
WRITE(p, "lacc.w = "I_PMATERIALS".C%d.w;\n", j);
}
else
{
WRITE(p, "lacc.w = 1.0f;\n");
}
if(color.enablelighting && alpha.enablelighting)
{
// both have lighting, test if they use the same lights
int mask = 0;
if(color.lightparams == alpha.lightparams)
{
mask = color.GetFullLightMask() & alpha.GetFullLightMask();
if(mask)
{
for (int i = 0; i < 8; ++i)
{
if (mask & (1<<i))
p = GeneratePixelLightShader(p, i, color, "lacc", 3);
}
}
}
// no shared lights
for (int i = 0; i < 8; ++i)
{
if (!(mask&(1<<i)) && (color.GetFullLightMask() & (1<<i)))
p = GeneratePixelLightShader(p, i, color, "lacc", 1);
if (!(mask&(1<<i)) && (alpha.GetFullLightMask() & (1<<i)))
p = GeneratePixelLightShader(p, i, alpha, "lacc", 2);
}
}
else if (color.enablelighting || alpha.enablelighting)
{
// lights are disabled on one channel so process only the active ones
LitChannel workingchannel = color.enablelighting ? color : alpha;
int coloralpha = color.enablelighting ? 1 : 2;
for (int i = 0; i < 8; ++i)
{
if (workingchannel.GetFullLightMask() & (1<<i))
p = GeneratePixelLightShader(p, i, workingchannel, "lacc", coloralpha);
}
}
WRITE(p, "colors_%d = mat * saturate(lacc);\n", j);
WRITE(p, "}\n");
}
p = GenerateLightingShader(p, components, I_PMATERIALS, I_PLIGHTS, "colors_", "colors_");
}
if (numTexgen < 7)