void mga_emit_contiguous_verts( GLcontext *ctx,
GLuint start,
GLuint count )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
GLuint vertex_size = mmesa->vertex_size * 4;
GLuint *dest = mgaAllocDmaLow( mmesa, (count-start) * vertex_size);
setup_tab[mmesa->SetupIndex].emit( ctx, start, count, dest, vertex_size );
}
static __inline__ void mga_draw_point( mgaContextPtr mmesa,
mgaVertexPtr tmp )
{
const GLfloat sz = 0.5 * CLAMP(mmesa->glCtx->Point.Size,
mmesa->glCtx->Const.MinPointSize,
mmesa->glCtx->Const.MaxPointSize);
const int vertex_size = mmesa->vertex_size;
GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
int j;
#if 0
v0->v.x += PNT_X_OFFSET - TRI_X_OFFSET;
v0->v.y += PNT_Y_OFFSET - TRI_Y_OFFSET;
#endif
/* Draw a point as two triangles.
*/
*(float *)&vb[0] = tmp->v.x - sz;
*(float *)&vb[1] = tmp->v.y - sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
vb += vertex_size;
*(float *)&vb[0] = tmp->v.x + sz;
*(float *)&vb[1] = tmp->v.y - sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
vb += vertex_size;
*(float *)&vb[0] = tmp->v.x + sz;
*(float *)&vb[1] = tmp->v.y + sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
vb += vertex_size;
*(float *)&vb[0] = tmp->v.x + sz;
*(float *)&vb[1] = tmp->v.y + sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
vb += vertex_size;
*(float *)&vb[0] = tmp->v.x - sz;
*(float *)&vb[1] = tmp->v.y + sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
vb += vertex_size;
*(float *)&vb[0] = tmp->v.x - sz;
*(float *)&vb[1] = tmp->v.y - sz;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = tmp->ui[j];
#if 0
v0->v.x -= PNT_X_OFFSET - TRI_X_OFFSET;
v0->v.y -= PNT_Y_OFFSET - TRI_Y_OFFSET;
#endif
}
static void __inline__ mga_draw_triangle( mgaContextPtr mmesa,
mgaVertexPtr v0,
mgaVertexPtr v1,
mgaVertexPtr v2 )
{
GLuint vertex_size = mmesa->vertex_size;
GLuint *vb = mgaAllocDmaLow( mmesa, 3 * 4 * vertex_size );
int j;
EMIT_VERT( j, vb, vertex_size, v0 );
EMIT_VERT( j, vb, vertex_size, v1 );
EMIT_VERT( j, vb, vertex_size, v2 );
}
static void mgaFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts,
GLuint n )
{
mgaContextPtr mmesa = MGA_CONTEXT( ctx );
GLuint vertex_size = mmesa->vertex_size;
GLuint *vb = mgaAllocDmaLow( mmesa, (n-2) * 3 * 4 * vertex_size );
GLubyte *vertptr = (GLubyte *)mmesa->verts;
const GLuint *start = (const GLuint *)VERT(elts[0]);
int i,j;
for (i = 2 ; i < n ; i++) {
EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i-1]) );
EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) VERT(elts[i]) );
EMIT_VERT( j, vb, vertex_size, (mgaVertexPtr) start );
}
}
static void INLINE mga_draw_quad( mgaContextPtr mmesa,
mgaVertexPtr v0,
mgaVertexPtr v1,
mgaVertexPtr v2,
mgaVertexPtr v3 )
{
GLuint vertex_size = mmesa->vertex_size;
GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
int j;
EMIT_VERT( j, vb, vertex_size, v0 );
EMIT_VERT( j, vb, vertex_size, v1 );
EMIT_VERT( j, vb, vertex_size, v3 );
EMIT_VERT( j, vb, vertex_size, v1 );
EMIT_VERT( j, vb, vertex_size, v2 );
EMIT_VERT( j, vb, vertex_size, v3 );
}
static __inline__ void mga_draw_line( mgaContextPtr mmesa,
mgaVertexPtr v0,
mgaVertexPtr v1 )
{
GLuint vertex_size = mmesa->vertex_size;
GLuint *vb = mgaAllocDmaLow( mmesa, 6 * 4 * vertex_size );
GLfloat dx, dy, ix, iy;
GLfloat width = mmesa->glCtx->Line._Width;
GLint j;
#if 0
v0->v.x += LINE_X_OFFSET - TRI_X_OFFSET;
v0->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET;
v1->v.x += LINE_X_OFFSET - TRI_X_OFFSET;
v1->v.y += LINE_Y_OFFSET - TRI_Y_OFFSET;
#endif
dx = v0->v.x - v1->v.x;
dy = v0->v.y - v1->v.y;
ix = width * .5; iy = 0;
if (dx * dx > dy * dy) {
iy = ix; ix = 0;
}
*(float *)&vb[0] = v0->v.x - ix;
*(float *)&vb[1] = v0->v.y - iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v0->ui[j];
vb += vertex_size;
*(float *)&vb[0] = v1->v.x + ix;
*(float *)&vb[1] = v1->v.y + iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v1->ui[j];
vb += vertex_size;
*(float *)&vb[0] = v0->v.x + ix;
*(float *)&vb[1] = v0->v.y + iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v0->ui[j];
vb += vertex_size;
*(float *)&vb[0] = v0->v.x - ix;
*(float *)&vb[1] = v0->v.y - iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v0->ui[j];
vb += vertex_size;
*(float *)&vb[0] = v1->v.x - ix;
*(float *)&vb[1] = v1->v.y - iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v1->ui[j];
vb += vertex_size;
*(float *)&vb[0] = v1->v.x + ix;
*(float *)&vb[1] = v1->v.y + iy;
for (j = 2 ; j < vertex_size ; j++)
vb[j] = v1->ui[j];
vb += vertex_size;
#if 0
v0->v.x -= LINE_X_OFFSET - TRI_X_OFFSET;
v0->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
v1->v.x -= LINE_X_OFFSET - TRI_X_OFFSET;
v1->v.y -= LINE_Y_OFFSET - TRI_Y_OFFSET;
#endif
}