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/*
* GLX Hardware Device Driver for Intel i810
* Copyright (C) 1999 Keith Whitwell
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
*/
/* $XFree86: xc/lib/GL/mesa/src/drv/i810/i810tris.h,v 1.8 2000/12/04 19:21:43 dawes Exp $ */
#ifndef I810TRIS_INC
#define I810TRIS_INC
#include "types.h"
#include "i810ioctl.h"
#include "i810vb.h"
extern void i810PrintRenderState( const char *msg, GLuint state );
extern void i810DDChooseRenderState(GLcontext *ctx);
extern void i810DDTrifuncInit( void );
#define I810_FLAT_BIT 0x1
#define I810_OFFSET_BIT 0x2
#define I810_TWOSIDE_BIT 0x4
#define I810_FALLBACK_BIT 0x8
static void __inline__ i810_draw_triangle( i810ContextPtr imesa,
i810VertexPtr v0,
i810VertexPtr v1,
i810VertexPtr v2 )
{
GLuint vertsize = imesa->vertsize;
GLuint *vb = i810AllocDwordsInline( imesa, 3 * vertsize );
int j;
#if defined(USE_X86_ASM)
__asm__ __volatile__( "rep ; movsl"
: "=%c" (j)
: "0" (vertsize), "D" ((long)vb), "S" ((long)v0)
: "memory" );
__asm__ __volatile__( "rep ; movsl"
: "=%c" (j)
: "0" (vertsize), "S" ((long)v1)
: "memory" );
__asm__ __volatile__( "rep ; movsl"
: "=%c" (j)
: "0" (vertsize), "S" ((long)v2)
: "memory" );
#else
for (j = 0 ; j < vertsize ; j++)
vb[j] = v0->ui[j];
vb += vertsize;
for (j = 0 ; j < vertsize ; j++)
vb[j] = v1->ui[j];
vb += vertsize;
for (j = 0 ; j < vertsize ; j++)
vb[j] = v2->ui[j];
#endif
}
static __inline__ void i810_draw_point( i810ContextPtr imesa,
i810VertexPtr tmp,
float sz )
{
int vertsize = imesa->vertsize;
GLuint *vb = i810AllocDwordsInline( imesa, 6 * vertsize );
const GLfloat x = tmp->v.x + 0.125;
const GLfloat y = tmp->v.y - 0.5F;
int j;
*(float *)&vb[0] = x - sz;
*(float *)&vb[1] = y - sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
vb += vertsize;
*(float *)&vb[0] = x + sz;
*(float *)&vb[1] = y - sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
vb += vertsize;
*(float *)&vb[0] = x + sz;
*(float *)&vb[1] = y + sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
vb += vertsize;
*(float *)&vb[0] = x + sz;
*(float *)&vb[1] = y + sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
vb += vertsize;
*(float *)&vb[0] = x - sz;
*(float *)&vb[1] = y + sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
vb += vertsize;
*(float *)&vb[0] = x - sz;
*(float *)&vb[1] = y - sz;
for (j = 2 ; j < vertsize ; j++)
vb[j] = tmp->ui[j];
}
static __inline__ void i810_draw_line( i810ContextPtr imesa,
i810VertexPtr v0,
i810VertexPtr v1 )
{
GLuint vertsize = imesa->vertsize;
GLuint *vb = i810AllocDwordsInline( imesa, 2 * vertsize );
int j;
#if defined(USE_X86_ASM)
__asm__ __volatile__( "rep ; movsl"
: "=%c" (j)
: "0" (vertsize), "D" ((long)vb), "S" ((long)v0)
: "memory" );
__asm__ __volatile__( "rep ; movsl"
: "=%c" (j)
: "0" (vertsize), "S" ((long)v1)
: "memory" );
#elif 0
for (j = 0 ; j < vertsize ; j++)
vb[j] = v0->ui[j];
vb += vertsize;
for (j = 0 ; j < vertsize ; j++)
vb[j] = v1->ui[j];
#else
const GLfloat dx = -0.5;
const GLfloat dy = -0.5;
v0->v.x += dx;
v0->v.y += dy;
v1->v.x += dx;
v1->v.y += dy;
for (j = 0 ; j < vertsize ; j++)
vb[j] = v0->ui[j];
vb += vertsize;
for (j = 0 ; j < vertsize ; j++)
vb[j] = v1->ui[j];
v0->v.x -= dx;
v0->v.y -= dy;
v1->v.x -= dx;
v1->v.y -= dy;
#endif
}
#endif
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