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- some shader cleanup.

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I think it's now as close to GZDoom's backend interface as it can be without disabling needed features.
This commit is contained in:
Christoph Oelckers 2020-06-07 10:15:31 +02:00
parent 09e31fd5f4
commit 9fc5f2d2e7
5 changed files with 30 additions and 61 deletions
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2
source/glbackend/gl_texture.cpp
View file

@ -69,7 +69,7 @@ bool GLInstance::SetTexture(int picnum, FGameTexture* tex, int paletteid, int sa
int TextureType = (texpick.translation & 0x80000000) ? TT_INDEXED : TT_TRUECOLOR;
if (TextureType == TT_INDEXED)
{
sampler = sampler + SamplerNoFilterRepeat - SamplerRepeat;
sampler = sampler + CLAMP_NOFILTER - CLAMP_NONE;
}

8
source/glbackend/glbackend.cpp
View file

@ -249,7 +249,6 @@ void GLInstance::DrawElement(EDrawType type, size_t start, size_t count, Polymos
if (activeShader == polymostShader)
{
glVertexAttrib4fv(2, renderState.Color);
if (renderState.Color[3] != 1.f) renderState.Flags &= ~RF_Brightmapping; // The way the colormaps are set up means that brightmaps cannot be used on translucent content at all.
renderState.Apply(polymostShader, lastState);
}
if (type != DT_Lines)
@ -267,7 +266,6 @@ void GLInstance::DoDraw()
for (auto& rs : rendercommands)
{
glVertexAttrib4fv(2, rs.Color);
if (rs.Color[3] != 1.f) rs.Flags &= ~RF_Brightmapping; // The way the colormaps are set up means that brightmaps cannot be used on translucent content at all.
rs.Apply(polymostShader, lastState);
glDrawArrays(primtypes[rs.primtype], rs.vindex, rs.vcount);
}
@ -543,12 +541,8 @@ void PolymostRenderState::Apply(PolymostShader* shader, GLState& oldState)
}
else shader->muFogEnabled.Set(0);
int texturemode = 0;
if (Flags & RF_DetailMapping) texturemode |= 0x20000;
if (Flags & RF_Brightmapping) texturemode |= 0x10000;
if (Flags & RF_GlowMapping) texturemode |= 0x40000;
shader->Flags.Set(Flags);
shader->TextureMode.Set(texturemode);
shader->TextureMode.Set(LayerFlags);
shader->NPOTEmulationFactor.Set(NPOTEmulationFactor);
shader->NPOTEmulationXOffset.Set(NPOTEmulationXOffset);
shader->AlphaThreshold.Set(AlphaTest ? AlphaThreshold : -1.f);

30
source/glbackend/glbackend.h
View file

@ -20,24 +20,6 @@ class F2DDrawer;
struct palette_t;
extern int xdim, ydim;
enum ESampler
{
NoSampler = -1,
SamplerRepeat = CLAMP_NONE,
SamplerClampX = CLAMP_X,
SamplerClampY = CLAMP_Y,
SamplerClampXY = CLAMP_XY,
Sampler2DFiltered = CLAMP_XY_NOMIP, // Currently unused shpuld be used for 2D content
SamplerNoFilterRepeat = CLAMP_NOFILTER,
SamplerNoFilterClampX = CLAMP_NOFILTER_X,
SamplerNoFilterClampY = CLAMP_NOFILTER_Y,
SamplerNoFilterClampXY = CLAMP_NOFILTER_XY,
};
enum
{
PALSWAP_TEXTURE_SIZE = 2048
};
class PaletteManager
{
OpenGLRenderer::FHardwareTexture* palettetextures[256] = {};
@ -391,20 +373,20 @@ public:
void UseDetailMapping(bool yes)
{
if (yes) renderState.Flags |= RF_DetailMapping;
else renderState.Flags &= ~RF_DetailMapping;
if (yes) renderState.LayerFlags |= TEXF_Detailmap;
else renderState.LayerFlags &= ~TEXF_Detailmap;
}
void UseGlowMapping(bool yes)
{
if (yes) renderState.Flags |= RF_GlowMapping;
else renderState.Flags &= ~RF_GlowMapping;
if (yes) renderState.LayerFlags |= TEXF_Glowmap;
else renderState.LayerFlags &= ~TEXF_Glowmap;
}
void UseBrightmaps(bool yes)
{
if (yes) renderState.Flags |= RF_Brightmapping;
else renderState.Flags &= ~RF_Brightmapping;
if (yes) renderState.LayerFlags |= TEXF_Brightmap;
else renderState.LayerFlags &= ~TEXF_Brightmap;
}
void SetNpotEmulation(float factor, float xOffset)

6
source/glbackend/pm_renderstate.h
View file

@ -18,9 +18,6 @@ enum PRSFlags
{
RF_ColorOnly = 1,
RF_UsePalette = 2,
RF_DetailMapping = 4,
RF_GlowMapping = 8,
RF_Brightmapping = 16,
RF_ShadeInterpolate = 64,
RF_FogDisabled = 128,
RF_MapFog = 256, // RRRA E2L1.
@ -48,8 +45,6 @@ enum PRSFlags
STF_CLEARDEPTH = 2048,
STF_VIEWPORTSET = 4096,
STF_SCISSORSET = 8192,
};
struct PolymostRenderState
@ -59,6 +54,7 @@ struct PolymostRenderState
float ShadeDiv = 62.f;
float VisFactor = 128.f;
int Flags = 0;
int LayerFlags = 0;
float NPOTEmulationFactor = 1.f;
float NPOTEmulationXOffset;
float Brightness = 1.f;

45
wadsrc/static/engine/shaders/glsl/polymost.fp
View file

@ -1,10 +1,11 @@
const int RF_ColorOnly = 1;
const int RF_UsePalette = 2;
const int RF_DetailMapping = 4;
const int RF_GlowMapping = 8;
const int RF_Brightmapping = 16;
const int RF_ShadeInterpolate = 64;
const int TEXF_Brightmap = 0x10000;
const int TEXF_Detailmap = 0x20000;
const int TEXF_Glowmap = 0x40000;
struct Material
{
@ -170,18 +171,8 @@ void main()
}
newCoord = vec2(coordX, coordY);
// Paletted textures are stored in column major order rather than row major so coordinates need to be swapped here.
color = texture(s_texture, newCoord);
// This was further down but it really should be done before applying any kind of depth fading, not afterward.
vec4 detailColor = vec4(1.0);
if ((u_flags & RF_DetailMapping) != 0)
{
detailColor = texture(detailtexture, newCoord * uDetailParms.xy) * uDetailParms.z;
detailColor = mix(vec4(1.0), 2.0 * detailColor, detailColor.a);
// Application of this differs based on render mode because for paletted rendering with palettized shade tables it can only be done after processing the shade table. We only have a palette index before.
}
float visibility = max(uGlobVis * uLightFactor * v_distance - ((u_flags & RF_ShadeInterpolate) != 0.0? 0.5 : 0.0), 0.0);
float numShades = float(uPalLightLevels & 255);
float shade = clamp((uLightLevel + visibility), 0.0, numShades - 1.0);
@ -207,13 +198,17 @@ void main()
palettedColor.a = color.r == 0.0? 0.0 : 1.0;// 1.0-floor(color.r);
color = palettedColor;
color.rgb *= detailColor.rgb; // with all this palettizing, this can only be applied afterward, even though it is wrong to do it this way.
color.rgb *= v_color.rgb; // Well, this is dead wrong but unavoidable. For colored fog it applies the light to the fog as well...
}
else
{
color.rgb *= detailColor.rgb;
// This was further down but it really should be done before applying any kind of depth fading, not afterward.
if ((uTextureMode & TEXF_Detailmap) != 0)
{
vec4 detailColor = texture(detailtexture, newCoord * uDetailParms.xy) * uDetailParms.z;
detailColor = mix(vec4(1.0), 2.0 * detailColor, detailColor.a);
color.rgb *= detailColor.rgb;
}
// Apply the texture modification colors.
int blendflags = int(uTextureAddColor.a); // this alpha is unused otherwise
if (blendflags != 0)
@ -224,10 +219,10 @@ void main()
if (uFogEnabled != 0) // Right now this code doesn't care about the fog modes yet.
{
shade = clamp(shade * uLightDist, 0.0, 1.0); // u_shadeDiv is really 1/shadeDiv.
shade = clamp(shade * uLightDist, 0.0, 1.0);
vec3 lightcolor = v_color.rgb * (1.0 - shade);
if ((u_flags & RF_Brightmapping) != 0)
if ((uTextureMode & TEXF_Brightmap) != 0)
{
lightcolor = clamp(lightcolor + texture(brighttexture, v_texCoord.xy).rgb, 0.0, 1.0);
}
@ -235,6 +230,13 @@ void main()
if (uFogDensity == 0.0) color.rgb += uFogColor.rgb * shade;
}
else color.rgb *= v_color.rgb;
if ((uTextureMode & TEXF_Glowmap) != 0)
{
vec4 glowColor = texture(glowtexture, v_texCoord.xy);
color.rgb = mix(color.rgb, glowColor.rgb, glowColor.a);
}
}
if (uFogDensity != 0.0) // fog hack for RRRA E2L1. Needs to be done better, this is gross, but still preferable to the broken original implementation.
{
@ -250,11 +252,6 @@ void main()
color = v_color;
}
if ((u_flags & (RF_ColorOnly|RF_GlowMapping)) == RF_GlowMapping)
{
vec4 glowColor = texture(glowtexture, v_texCoord.xy);
color.rgb = mix(color.rgb, glowColor.rgb, glowColor.a);
}
/*
int ix = int (v_worldPosition.x);