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Add support for HW stencil spans, mirroring the depth spans support. Used for

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Rage 128 stencil support.
This commit is contained in:
Eric Anholt 2005-10-27 06:01:50 +00:00
parent 2d0c92d81b
commit 170a61ec00
1 changed files with 51 additions and 2 deletions
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53
src/mesa/drivers/dri/common/stenciltmp.h
View file

@ -6,6 +6,14 @@
#define DBG 0
#endif
#ifndef HAVE_HW_STENCIL_SPANS
#define HAVE_HW_STENCIL_SPANS 0
#endif
#ifndef HAVE_HW_STENCIL_PIXELS
#define HAVE_HW_STENCIL_PIXELS 0
#endif
static void TAG(WriteStencilSpan)( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
@ -20,6 +28,14 @@ static void TAG(WriteStencilSpan)( GLcontext *ctx,
y = Y_FLIP(y);
#if HAVE_HW_STENCIL_SPANS
(void) x1; (void) n1;
if (DBG) fprintf(stderr, "WriteStencilSpan 0..%d (x1 %d)\n",
(int)n1, (int)x1);
WRITE_STENCIL_SPAN();
#else /* HAVE_HW_STENCIL_SPANS */
HW_CLIPLOOP()
{
GLint i = 0;
@ -41,11 +57,26 @@ static void TAG(WriteStencilSpan)( GLcontext *ctx,
}
}
HW_ENDCLIPLOOP();
#endif /* !HAVE_HW_STENCIL_SPANS */
}
HW_WRITE_UNLOCK();
}
#if HAVE_HW_STENCIL_SPANS
/* implement MonoWriteDepthSpan() in terms of WriteDepthSpan() */
static void
TAG(WriteMonoStencilSpan)( GLcontext *ctx, struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
const void *value, const GLubyte mask[] )
{
const GLuint stenVal = *((GLuint *) value);
GLuint stens[MAX_WIDTH];
GLuint i;
for (i = 0; i < n; i++)
stens[i] = stenVal;
TAG(WriteStencilSpan)(ctx, rb, n, x, y, stens, mask);
}
#else /* HAVE_HW_STENCIL_SPANS */
static void TAG(WriteMonoStencilSpan)( GLcontext *ctx,
struct gl_renderbuffer *rb,
GLuint n, GLint x, GLint y,
@ -85,7 +116,7 @@ static void TAG(WriteMonoStencilSpan)( GLcontext *ctx,
}
HW_WRITE_UNLOCK();
}
#endif /* !HAVE_HW_STENCIL_SPANS */
static void TAG(WriteStencilPixels)( GLcontext *ctx,
@ -102,6 +133,11 @@ static void TAG(WriteStencilPixels)( GLcontext *ctx,
if (DBG) fprintf(stderr, "WriteStencilPixels\n");
#if HAVE_HW_STENCIL_PIXELS
(void) i;
WRITE_STENCIL_PIXELS();
#else /* HAVE_HW_STENCIL_PIXELS */
HW_CLIPLOOP()
{
for (i=0;i<n;i++)
@ -114,6 +150,7 @@ static void TAG(WriteStencilPixels)( GLcontext *ctx,
}
}
HW_ENDCLIPLOOP();
#endif /* !HAVE_HW_STENCIL_PIXELS */
}
HW_WRITE_UNLOCK();
}
@ -136,6 +173,11 @@ static void TAG(ReadStencilSpan)( GLcontext *ctx,
if (DBG) fprintf(stderr, "ReadStencilSpan\n");
#if HAVE_HW_STENCIL_SPANS
(void) x1; (void) n1;
READ_STENCIL_SPAN();
#else /* HAVE_HW_STENCIL_SPANS */
HW_CLIPLOOP()
{
GLint i = 0;
@ -144,6 +186,7 @@ static void TAG(ReadStencilSpan)( GLcontext *ctx,
READ_STENCIL( stencil[i], (x+i), y );
}
HW_ENDCLIPLOOP();
#endif /* !HAVE_HW_STENCIL_SPANS */
}
HW_READ_UNLOCK();
}
@ -161,6 +204,11 @@ static void TAG(ReadStencilPixels)( GLcontext *ctx,
if (DBG) fprintf(stderr, "ReadStencilPixels\n");
#if HAVE_HW_STENCIL_PIXELS
(void) i;
READ_STENCIL_PIXELS();
#else /* HAVE_HW_STENCIL_PIXELS */
HW_CLIPLOOP()
{
for (i=0;i<n;i++) {
@ -170,6 +218,7 @@ static void TAG(ReadStencilPixels)( GLcontext *ctx,
}
}
HW_ENDCLIPLOOP();
#endif /* !HAVE_HW_STENCIL_PIXELS */
}
HW_READ_UNLOCK();
}