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Contour processing (discarding of pixels when alpha==0) enabled for A4L4 texture formats. Improves smoke and fire in Daytona 2.

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This commit is contained in:
Bart Trzynadlowski 2012-02-17 07:45:50 +00:00
parent 5709010cb2
commit 0257f1f9e8
1 changed files with 16 additions and 3 deletions
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19
Src/Graphics/Models.cpp
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@ -26,6 +26,10 @@
*
* TO-DO List:
* -----------
* - If vertex normals aren't offset from polygon normals, would that improve
* specular lighting?
* - Check to see if vertices in LA Machineguns and Dirt Devils contain color
* values rather than normals.
* - More should be predecoded into the polygon structures, so that things like
* texture base coordinates are not re-decoded in two different places!
*/
@ -450,12 +454,21 @@ void CRender3D::InsertVertex(ModelCache *Cache, const Vertex *V, const Poly *P,
if (!(P->header[6]&0x00010000)) // if not luminous, always use full fog intensity
fogIntensity = 1.0f;
// Contour processing
if ((P->header[6]&0x80000000) || (texFormat==7)) // contour processing enabled or alpha texture
/*
* Contour processing. Any alpha value sufficiently close to 0 seems to
* cause pixels to be discarded entirely on Model 3 (no modification of the
* depth buffer). Strictly speaking, only T1RGB5 format textures are
* "contour textures" (in Real3D lingo), we enable contour processing for
* alpha blended texture formats as well in order to discard fully
* transparent pixels.
*/
if ((P->header[6]&0x80000000) || (texFormat==7) || // contour processing enabled or RGBA4 texture
((texFormat==1) && (P->header[6]&2)) || // A4L4 interleaved (these formats are not being interpreted correctly, see Scud Race clock tower)
((texFormat==3) && (P->header[6]&4))) // A4L4 interleaved
contourProcessing = 1.0f;
else
contourProcessing = -1.0f;
// Store to local vertex buffer
s = P->state;
baseIdx = Cache->curVertIdx[s]*VBO_VERTEX_SIZE;