mirror of
https://git.do.srb2.org/KartKrew/Kart-Public.git
synced 2025-01-13 05:11:01 +00:00
Sky dome from SRB2
This commit is contained in:
Hannu Hanhi
parent
e45295f1ea
commit
ce1d017a73
6 changed files with 381 additions and 81 deletions
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@ -51,6 +51,8 @@ EXPORT void HWRAPI(CreateModelVBOs) (model_t *model);
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EXPORT void HWRAPI(SetTransform) (FTransform *stransform);
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EXPORT INT32 HWRAPI(GetTextureUsed) (void);
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EXPORT void HWRAPI(RenderSkyDome) (INT32 tex, INT32 texture_width, INT32 texture_height, FTransform transform);
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EXPORT void HWRAPI(FlushScreenTextures) (void);
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EXPORT void HWRAPI(StartScreenWipe) (void);
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EXPORT void HWRAPI(EndScreenWipe) (void);
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@ -111,6 +113,8 @@ struct hwdriver_s
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MakeScreenFinalTexture pfnMakeScreenFinalTexture;
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DrawScreenFinalTexture pfnDrawScreenFinalTexture;
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RenderSkyDome pfnRenderSkyDome;
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LoadShaders pfnLoadShaders;
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KillShaders pfnKillShaders;
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SetShader pfnSetShader;
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@ -78,6 +78,7 @@ consvar_t cv_grcorrecttricks = {"gr_correcttricks", "Off", 0, CV_OnOff, NULL, 0,
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consvar_t cv_grsolvetjoin = {"gr_solvetjoin", "On", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
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consvar_t cv_grbatching = {"gr_batching", "On", 0, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
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consvar_t cv_grskydome = {"gr_skydome", "On", CV_SAVE, CV_OnOff, NULL, 0, NULL, NULL, 0, 0, NULL};
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static void CV_filtermode_ONChange(void)
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{
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@ -4513,105 +4514,136 @@ void HWR_ProjectPrecipitationSprite(precipmobj_t *thing)
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static boolean drewsky = false;
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void HWR_DrawSkyBackground(void)
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void HWR_DrawSkyBackground(float fpov)
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{
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FOutVector v[4];
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angle_t angle;
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float dimensionmultiply;
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float aspectratio;
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float angleturn;
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if (drewsky)
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return;
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HWR_GetTexture(texturetranslation[skytexture]);
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aspectratio = (float)vid.width/(float)vid.height;
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//Hurdler: the sky is the only texture who need 4.0f instead of 1.0
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// because it's called just after clearing the screen
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// and thus, the near clipping plane is set to 3.99
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// Sryder: Just use the near clipping plane value then
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// 3--2
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// | /|
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// |/ |
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// 0--1
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v[0].x = v[3].x = -ZCLIP_PLANE-1;
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v[1].x = v[2].x = ZCLIP_PLANE+1;
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v[0].y = v[1].y = -ZCLIP_PLANE-1;
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v[2].y = v[3].y = ZCLIP_PLANE+1;
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v[0].z = v[1].z = v[2].z = v[3].z = ZCLIP_PLANE+1;
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// X
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// NOTE: This doesn't work right with texture widths greater than 1024
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// software doesn't draw any further than 1024 for skies anyway, but this doesn't overlap properly
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// The only time this will probably be an issue is when a sky wider than 1024 is used as a sky AND a regular wall texture
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angle = (viewangle + xtoviewangle[0]);
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dimensionmultiply = ((float)textures[texturetranslation[skytexture]]->width/256.0f);
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if (atransform.mirror)
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if (cv_grskydome.value)
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{
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angle = InvAngle(angle);
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dimensionmultiply *= -1;
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}
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FTransform dometransform;
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v[0].s = v[3].s = ((float) angle / ((ANGLE_90-1)*dimensionmultiply));
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v[2].s = v[1].s = (-1.0f/dimensionmultiply)+((float) angle / ((ANGLE_90-1)*dimensionmultiply));
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memset(&dometransform, 0x00, sizeof(FTransform));
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// Y
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angle = aimingangle;
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dimensionmultiply = ((float)textures[texturetranslation[skytexture]]->height/(128.0f*aspectratio));
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//04/01/2000: Hurdler: added for T&L
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// It should replace all other gr_viewxxx when finished
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if (!atransform.shearing)
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dometransform.anglex = (float)(aimingangle>>ANGLETOFINESHIFT)*(360.0f/(float)FINEANGLES);
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dometransform.angley = (float)((viewangle-ANGLE_270)>>ANGLETOFINESHIFT)*(360.0f/(float)FINEANGLES);
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if (splitscreen == 1)
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{
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dimensionmultiply *= 2;
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angle *= 2;
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}
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dometransform.flip = atransform.flip;
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dometransform.mirror = atransform.mirror;
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dometransform.shearing = atransform.shearing;
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dometransform.viewaiming = atransform.viewaiming;
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// Middle of the sky should always be at angle 0
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// need to keep correct aspect ratio with X
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if (atransform.flip)
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{
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// During vertical flip the sky should be flipped and it's y movement should also be flipped obviously
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v[3].t = v[2].t = -(0.5f-(0.5f/dimensionmultiply));
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v[0].t = v[1].t = (-1.0f/dimensionmultiply)-(0.5f-(0.5f/dimensionmultiply));
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dometransform.scalex = 1;
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dometransform.scaley = (float)vid.width/vid.height;
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dometransform.scalez = 1;
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dometransform.fovxangle = fpov; // Tails
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dometransform.fovyangle = fpov; // Tails
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dometransform.splitscreen = splitscreen;
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HWR_GetTexture(texturetranslation[skytexture]);
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HWD.pfnSetShader(7); // sky shader
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HWD.pfnRenderSkyDome(skytexture, textures[skytexture]->width, textures[skytexture]->height, dometransform);
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HWD.pfnSetShader(0);
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}
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else
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{
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v[3].t = v[2].t = (-1.0f/dimensionmultiply)-(0.5f-(0.5f/dimensionmultiply));
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v[0].t = v[1].t = -(0.5f-(0.5f/dimensionmultiply));
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}
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FOutVector v[4];
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angle_t angle;
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float dimensionmultiply;
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float aspectratio;
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float angleturn;
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angleturn = (((float)ANGLE_45-1.0f)*aspectratio)*dimensionmultiply;
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HWR_GetTexture(texturetranslation[skytexture]);
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aspectratio = (float)vid.width/(float)vid.height;
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if (cv_grshearing.value)
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{
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// Doesn't really make sense, but what can I do?
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angle_t dy = FixedAngle(FixedMul(360*FRACUNIT, FixedDiv(AIMINGTODY(aimingangle), 900*FRACUNIT)));
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v[3].t = v[2].t -= ((float) dy / angleturn);
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v[0].t = v[1].t -= ((float) dy / angleturn);
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}
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else
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{
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if (angle > ANGLE_180) // Do this because we don't want the sky to suddenly teleport when crossing over 0 to 360 and vice versa
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//Hurdler: the sky is the only texture who need 4.0f instead of 1.0
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// because it's called just after clearing the screen
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// and thus, the near clipping plane is set to 3.99
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// Sryder: Just use the near clipping plane value then
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// 3--2
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// | /|
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// |/ |
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// 0--1
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v[0].x = v[3].x = -ZCLIP_PLANE-1;
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v[1].x = v[2].x = ZCLIP_PLANE+1;
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v[0].y = v[1].y = -ZCLIP_PLANE-1;
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v[2].y = v[3].y = ZCLIP_PLANE+1;
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v[0].z = v[1].z = v[2].z = v[3].z = ZCLIP_PLANE+1;
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// X
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// NOTE: This doesn't work right with texture widths greater than 1024
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// software doesn't draw any further than 1024 for skies anyway, but this doesn't overlap properly
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// The only time this will probably be an issue is when a sky wider than 1024 is used as a sky AND a regular wall texture
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angle = (viewangle + xtoviewangle[0]);
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dimensionmultiply = ((float)textures[texturetranslation[skytexture]]->width/256.0f);
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if (atransform.mirror)
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{
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angle = InvAngle(angle);
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v[3].t = v[2].t += ((float) angle / angleturn);
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v[0].t = v[1].t += ((float) angle / angleturn);
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dimensionmultiply *= -1;
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}
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v[0].s = v[3].s = ((float) angle / ((ANGLE_90-1)*dimensionmultiply));
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v[2].s = v[1].s = (-1.0f/dimensionmultiply)+((float) angle / ((ANGLE_90-1)*dimensionmultiply));
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// Y
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angle = aimingangle;
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dimensionmultiply = ((float)textures[texturetranslation[skytexture]]->height/(128.0f*aspectratio));
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if (splitscreen == 1)
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{
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dimensionmultiply *= 2;
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angle *= 2;
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}
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// Middle of the sky should always be at angle 0
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// need to keep correct aspect ratio with X
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if (atransform.flip)
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{
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// During vertical flip the sky should be flipped and it's y movement should also be flipped obviously
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v[3].t = v[2].t = -(0.5f-(0.5f/dimensionmultiply));
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v[0].t = v[1].t = (-1.0f/dimensionmultiply)-(0.5f-(0.5f/dimensionmultiply));
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}
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else
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{
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v[3].t = v[2].t -= ((float) angle / angleturn);
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v[0].t = v[1].t -= ((float) angle / angleturn);
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v[3].t = v[2].t = (-1.0f/dimensionmultiply)-(0.5f-(0.5f/dimensionmultiply));
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v[0].t = v[1].t = -(0.5f-(0.5f/dimensionmultiply));
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}
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}
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HWD.pfnSetShader(7); // sky shader
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HWD.pfnDrawPolygon(NULL, v, 4, 0);
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HWD.pfnSetShader(0);
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angleturn = (((float)ANGLE_45-1.0f)*aspectratio)*dimensionmultiply;
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if (cv_grshearing.value)
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{
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// Doesn't really make sense, but what can I do?
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angle_t dy = FixedAngle(FixedMul(360*FRACUNIT, FixedDiv(AIMINGTODY(aimingangle), 900*FRACUNIT)));
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v[3].t = v[2].t -= ((float) dy / angleturn);
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v[0].t = v[1].t -= ((float) dy / angleturn);
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}
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else
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{
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if (angle > ANGLE_180) // Do this because we don't want the sky to suddenly teleport when crossing over 0 to 360 and vice versa
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{
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angle = InvAngle(angle);
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v[3].t = v[2].t += ((float) angle / angleturn);
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v[0].t = v[1].t += ((float) angle / angleturn);
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}
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else
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{
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v[3].t = v[2].t -= ((float) angle / angleturn);
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v[0].t = v[1].t -= ((float) angle / angleturn);
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}
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}
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HWD.pfnSetShader(7); // sky shader
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HWD.pfnDrawPolygon(NULL, v, 4, 0);
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HWD.pfnSetShader(0);
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}
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}
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@ -4751,7 +4783,7 @@ void HWR_RenderFrame(INT32 viewnumber, player_t *player, boolean skybox)
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ST_doPaletteStuff();
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// Draw the sky background.
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HWR_DrawSkyBackground();
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HWR_DrawSkyBackground(fpov);
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if (skybox)
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drewsky = true;
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@ -4885,6 +4917,7 @@ void HWR_AddCommands(void)
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CV_RegisterVar(&cv_grsolvetjoin);
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CV_RegisterVar(&cv_grbatching);
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CV_RegisterVar(&cv_grskydome);
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}
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// --------------------------------------------------------------------------
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@ -103,7 +103,7 @@ void HWR_ProjectWall(FOutVector *wallVerts, FSurfaceInfo *pSurf, FBITFIELD blend
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void HWR_AddTransparentWall(FOutVector *wallVerts, FSurfaceInfo * pSurf, INT32 texnum, FBITFIELD blend, boolean fogwall, INT32 lightlevel, extracolormap_t *wallcolormap);
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void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor);
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void HWR_DrawSkyWall(FOutVector *wallVerts, FSurfaceInfo *Surf);
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void HWR_DrawSkyBackground(void);
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void HWR_DrawSkyBackground(float fpov);
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#ifdef POLYOBJECTS
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void HWR_AddPolyObjectSegs(void);
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@ -388,6 +388,10 @@ static PFNglMultiTexCoord2fv pglMultiTexCoord2fv;
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typedef void (APIENTRY *PFNglClientActiveTexture) (GLenum);
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static PFNglClientActiveTexture pglClientActiveTexture;
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// sky dome needs this
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typedef void (APIENTRY *PFNglColorPointer) (GLint, GLenum, GLsizei, const GLvoid*);
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static PFNglColorPointer pglColorPointer;
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/* 1.2 Parms */
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/* GL_CLAMP_TO_EDGE_EXT */
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#ifndef GL_CLAMP_TO_EDGE
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@ -756,6 +760,7 @@ void SetupGLFunc4(void)
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pglBindBuffer = GetGLFunc("glBindBuffer");
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pglBufferData = GetGLFunc("glBufferData");
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pglDeleteBuffers = GetGLFunc("glDeleteBuffers");
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pglColorPointer = GetGLFunc("glColorPointer");
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#ifdef GL_SHADERS
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pglCreateShader = GetGLFunc("glCreateShader");
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@ -2318,6 +2323,260 @@ EXPORT void HWRAPI(DrawPolygon) (FSurfaceInfo *pSurf, FOutVector *pOutVerts, FUI
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}
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}
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// Sky dome code, taken/backported from SRB2
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typedef struct vbo_vertex_s
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{
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float x, y, z;
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float u, v;
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unsigned char r, g, b, a;
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} vbo_vertex_t;
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typedef struct
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{
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int mode;
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int vertexcount;
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int vertexindex;
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int use_texture;
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} GLSkyLoopDef;
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typedef struct
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{
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unsigned int id;
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int rows, columns;
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int loopcount;
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GLSkyLoopDef *loops;
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vbo_vertex_t *data;
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} GLSkyVBO;
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static const boolean gl_ext_arb_vertex_buffer_object = true;
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#define NULL_VBO_VERTEX ((vbo_vertex_t*)NULL)
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#define sky_vbo_x (gl_ext_arb_vertex_buffer_object ? &NULL_VBO_VERTEX->x : &vbo->data[0].x)
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#define sky_vbo_u (gl_ext_arb_vertex_buffer_object ? &NULL_VBO_VERTEX->u : &vbo->data[0].u)
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#define sky_vbo_r (gl_ext_arb_vertex_buffer_object ? &NULL_VBO_VERTEX->r : &vbo->data[0].r)
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// The texture offset to be applied to the texture coordinates in SkyVertex().
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static int rows, columns;
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static signed char yflip;
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static int texw, texh;
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static boolean foglayer;
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static float delta = 0.0f;
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static int gl_sky_detail = 16;
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static INT32 lasttex = -1;
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#define MAP_COEFF 128.0f
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static void SkyVertex(vbo_vertex_t *vbo, int r, int c)
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{
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const float radians = (float)(M_PIl / 180.0f);
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const float scale = 10000.0f;
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const float maxSideAngle = 60.0f;
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float topAngle = (c / (float)columns * 360.0f);
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float sideAngle = (maxSideAngle * (rows - r) / rows);
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float height = (float)(sin(sideAngle * radians));
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float realRadius = (float)(scale * cos(sideAngle * radians));
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float x = (float)(realRadius * cos(topAngle * radians));
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float y = (!yflip) ? scale * height : -scale * height;
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float z = (float)(realRadius * sin(topAngle * radians));
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float timesRepeat = (4 * (256.0f / texw));
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if (fpclassify(timesRepeat) == FP_ZERO)
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timesRepeat = 1.0f;
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if (!foglayer)
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{
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vbo->r = 255;
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vbo->g = 255;
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vbo->b = 255;
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vbo->a = (r == 0 ? 0 : 255);
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// And the texture coordinates.
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//vbo->u = (-timesRepeat * c / (float)columns);
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vbo->u = (timesRepeat * c / (float)columns);// TEST
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if (!yflip) // Flipped Y is for the lower hemisphere.
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vbo->v = (r / (float)rows) + 0.5f;
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else
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vbo->v = 1.0f + ((rows - r) / (float)rows) + 0.5f;
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}
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if (r != 4)
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{
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y += 300.0f;
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}
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// And finally the vertex.
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vbo->x = x;
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vbo->y = y + delta;
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vbo->z = z;
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}
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static GLSkyVBO sky_vbo;
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static void gld_BuildSky(int row_count, int col_count)
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{
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int c, r;
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vbo_vertex_t *vertex_p;
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int vertex_count = 2 * row_count * (col_count * 2 + 2) + col_count * 2;
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GLSkyVBO *vbo = &sky_vbo;
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if ((vbo->columns != col_count) || (vbo->rows != row_count))
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{
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free(vbo->loops);
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free(vbo->data);
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memset(vbo, 0, sizeof(&vbo));
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}
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if (!vbo->data)
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{
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memset(vbo, 0, sizeof(&vbo));
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vbo->loops = malloc((row_count * 2 + 2) * sizeof(vbo->loops[0]));
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// create vertex array
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vbo->data = malloc(vertex_count * sizeof(vbo->data[0]));
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}
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vbo->columns = col_count;
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vbo->rows = row_count;
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vertex_p = &vbo->data[0];
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vbo->loopcount = 0;
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for (yflip = 0; yflip < 2; yflip++)
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||||
{
|
||||
vbo->loops[vbo->loopcount].mode = GL_TRIANGLE_FAN;
|
||||
vbo->loops[vbo->loopcount].vertexindex = vertex_p - &vbo->data[0];
|
||||
vbo->loops[vbo->loopcount].vertexcount = col_count;
|
||||
vbo->loops[vbo->loopcount].use_texture = false;
|
||||
vbo->loopcount++;
|
||||
|
||||
delta = 0.0f;
|
||||
foglayer = true;
|
||||
for (c = 0; c < col_count; c++)
|
||||
{
|
||||
SkyVertex(vertex_p, 1, c);
|
||||
vertex_p->r = 255;
|
||||
vertex_p->g = 255;
|
||||
vertex_p->b = 255;
|
||||
vertex_p->a = 255;
|
||||
vertex_p++;
|
||||
}
|
||||
foglayer = false;
|
||||
|
||||
delta = (yflip ? 5.0f : -5.0f) / MAP_COEFF;
|
||||
|
||||
for (r = 0; r < row_count; r++)
|
||||
{
|
||||
vbo->loops[vbo->loopcount].mode = GL_TRIANGLE_STRIP;
|
||||
vbo->loops[vbo->loopcount].vertexindex = vertex_p - &vbo->data[0];
|
||||
vbo->loops[vbo->loopcount].vertexcount = 2 * col_count + 2;
|
||||
vbo->loops[vbo->loopcount].use_texture = true;
|
||||
vbo->loopcount++;
|
||||
|
||||
for (c = 0; c <= col_count; c++)
|
||||
{
|
||||
SkyVertex(vertex_p++, r + (yflip ? 1 : 0), (c ? c : 0));
|
||||
SkyVertex(vertex_p++, r + (yflip ? 0 : 1), (c ? c : 0));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
//
|
||||
//
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
static void RenderDome(INT32 skytexture)
|
||||
{
|
||||
int i, j;
|
||||
int vbosize;
|
||||
GLSkyVBO *vbo = &sky_vbo;
|
||||
|
||||
rows = 4;
|
||||
columns = 4 * gl_sky_detail;
|
||||
|
||||
vbosize = 2 * rows * (columns * 2 + 2) + columns * 2;
|
||||
|
||||
// Build the sky dome! Yes!
|
||||
if (lasttex != skytexture)
|
||||
{
|
||||
// delete VBO when already exists
|
||||
if (gl_ext_arb_vertex_buffer_object)
|
||||
{
|
||||
if (vbo->id)
|
||||
pglDeleteBuffers(1, &vbo->id);
|
||||
}
|
||||
|
||||
lasttex = skytexture;
|
||||
gld_BuildSky(rows, columns);
|
||||
|
||||
if (gl_ext_arb_vertex_buffer_object)
|
||||
{
|
||||
// generate a new VBO and get the associated ID
|
||||
pglGenBuffers(1, &vbo->id);
|
||||
|
||||
// bind VBO in order to use
|
||||
pglBindBuffer(GL_ARRAY_BUFFER, vbo->id);
|
||||
|
||||
// upload data to VBO
|
||||
pglBufferData(GL_ARRAY_BUFFER, vbosize * sizeof(vbo->data[0]), vbo->data, GL_STATIC_DRAW);
|
||||
}
|
||||
}
|
||||
|
||||
// bind VBO in order to use
|
||||
if (gl_ext_arb_vertex_buffer_object)
|
||||
pglBindBuffer(GL_ARRAY_BUFFER, vbo->id);
|
||||
|
||||
// activate and specify pointers to arrays
|
||||
pglVertexPointer(3, GL_FLOAT, sizeof(vbo->data[0]), sky_vbo_x);
|
||||
pglTexCoordPointer(2, GL_FLOAT, sizeof(vbo->data[0]), sky_vbo_u);
|
||||
pglColorPointer(4, GL_UNSIGNED_BYTE, sizeof(vbo->data[0]), sky_vbo_r);
|
||||
|
||||
// activate color arrays
|
||||
pglEnableClientState(GL_COLOR_ARRAY);
|
||||
|
||||
// set transforms
|
||||
pglScalef(1.0f, (float)texh / 230.0f, 1.0f);
|
||||
pglRotatef(270.0f, 0.0f, 1.0f, 0.0f);
|
||||
|
||||
for (j = 0; j < 2; j++)
|
||||
{
|
||||
for (i = 0; i < vbo->loopcount; i++)
|
||||
{
|
||||
GLSkyLoopDef *loop = &vbo->loops[i];
|
||||
|
||||
if (j == 0 ? loop->use_texture : !loop->use_texture)
|
||||
continue;
|
||||
|
||||
pglDrawArrays(loop->mode, loop->vertexindex, loop->vertexcount);
|
||||
}
|
||||
}
|
||||
|
||||
pglScalef(1.0f, 1.0f, 1.0f);
|
||||
pglColor4ubv(white);
|
||||
|
||||
// bind with 0, so, switch back to normal pointer operation
|
||||
if (gl_ext_arb_vertex_buffer_object)
|
||||
pglBindBuffer(GL_ARRAY_BUFFER, 0);
|
||||
|
||||
// deactivate color array
|
||||
pglDisableClientState(GL_COLOR_ARRAY);
|
||||
}
|
||||
|
||||
EXPORT void HWRAPI(RenderSkyDome) (INT32 tex, INT32 texture_width, INT32 texture_height, FTransform transform)
|
||||
{
|
||||
SetBlend(PF_Translucent|PF_NoDepthTest|PF_Modulated);
|
||||
SetTransform(&transform);
|
||||
texw = texture_width;
|
||||
texh = texture_height;
|
||||
RenderDome(tex);
|
||||
SetBlend(0);
|
||||
}
|
||||
|
||||
// ==========================================================================
|
||||
//
|
||||
// ==========================================================================
|
||||
|
|
|
|||
|
|
@ -100,6 +100,8 @@ void *hwSym(const char *funcName,void *handle)
|
|||
GETFUNC(MakeScreenTexture);
|
||||
GETFUNC(MakeScreenFinalTexture);
|
||||
GETFUNC(DrawScreenFinalTexture);
|
||||
|
||||
GETFUNC(RenderSkyDome);
|
||||
|
||||
GETFUNC(LoadShaders);
|
||||
GETFUNC(KillShaders);
|
||||
|
|
|
|||
|
|
@ -1871,6 +1871,8 @@ void I_StartupGraphics(void)
|
|||
HWD.pfnMakeScreenTexture= hwSym("MakeScreenTexture",NULL);
|
||||
HWD.pfnMakeScreenFinalTexture=hwSym("MakeScreenFinalTexture",NULL);
|
||||
HWD.pfnDrawScreenFinalTexture=hwSym("DrawScreenFinalTexture",NULL);
|
||||
|
||||
HWD.pfnRenderSkyDome = hwSym("RenderSkyDome",NULL);
|
||||
|
||||
HWD.pfnLoadShaders = hwSym("LoadShaders",NULL);
|
||||
HWD.pfnKillShaders = hwSym("KillShaders",NULL);
|
||||
|
|
|
|||
Loading…
Reference in a new issue