parent
3160cbabcc
commit
a80e33f407
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@ -337,7 +337,8 @@ void
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lp_setup_set_triangle_state( struct lp_setup_context *setup,
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unsigned cull_mode,
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boolean ccw_is_frontface,
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boolean scissor )
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boolean scissor,
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boolean gl_rasterization_rules)
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{
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LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__);
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@ -345,6 +346,7 @@ lp_setup_set_triangle_state( struct lp_setup_context *setup,
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setup->cullmode = cull_mode;
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setup->triangle = first_triangle;
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setup->scissor_test = scissor;
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setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f;
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}
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@ -89,7 +89,8 @@ void
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lp_setup_set_triangle_state( struct lp_setup_context *setup,
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unsigned cullmode,
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boolean front_is_ccw,
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boolean scissor );
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boolean scissor,
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boolean gl_rasterization_rules );
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void
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lp_setup_set_fs_inputs( struct lp_setup_context *setup,
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@ -89,6 +89,7 @@ struct lp_setup_context
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boolean ccw_is_frontface;
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boolean scissor_test;
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unsigned cullmode;
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float pixel_offset;
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struct pipe_framebuffer_state fb;
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@ -41,7 +41,8 @@
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/**
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* Compute a0 for a constant-valued coefficient (GL_FLAT shading).
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*/
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static void constant_coef( struct lp_rast_triangle *tri,
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static void constant_coef( struct lp_setup_context *setup,
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struct lp_rast_triangle *tri,
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unsigned slot,
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const float value,
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unsigned i )
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@ -56,7 +57,8 @@ static void constant_coef( struct lp_rast_triangle *tri,
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* Compute a0, dadx and dady for a linearly interpolated coefficient,
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* for a triangle.
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*/
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static void linear_coef( struct lp_rast_triangle *tri,
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static void linear_coef( struct lp_setup_context *setup,
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struct lp_rast_triangle *tri,
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float oneoverarea,
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unsigned slot,
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const float (*v1)[4],
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@ -90,8 +92,8 @@ static void linear_coef( struct lp_rast_triangle *tri,
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* instead - i'll switch to this later.
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*/
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tri->inputs.a0[slot][i] = (a1 -
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(dadx * (v1[0][0] - 0.5f) +
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dady * (v1[0][1] - 0.5f)));
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(dadx * (v1[0][0] - setup->pixel_offset) +
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dady * (v1[0][1] - setup->pixel_offset)));
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}
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@ -103,7 +105,8 @@ static void linear_coef( struct lp_rast_triangle *tri,
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* Later, when we compute the value at a particular fragment position we'll
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* divide the interpolated value by the interpolated W at that fragment.
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*/
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static void perspective_coef( struct lp_rast_triangle *tri,
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static void perspective_coef( struct lp_setup_context *setup,
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struct lp_rast_triangle *tri,
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float oneoverarea,
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unsigned slot,
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const float (*v1)[4],
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@ -125,8 +128,8 @@ static void perspective_coef( struct lp_rast_triangle *tri,
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tri->inputs.dadx[slot][i] = dadx;
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tri->inputs.dady[slot][i] = dady;
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tri->inputs.a0[slot][i] = (a1 -
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(dadx * (v1[0][0] - 0.5f) +
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dady * (v1[0][1] - 0.5f)));
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(dadx * (v1[0][0] - setup->pixel_offset) +
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dady * (v1[0][1] - setup->pixel_offset)));
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}
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@ -137,7 +140,8 @@ static void perspective_coef( struct lp_rast_triangle *tri,
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* We could do a bit less work if we'd examine gl_FragCoord's swizzle mask.
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*/
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static void
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setup_fragcoord_coef(struct lp_rast_triangle *tri,
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setup_fragcoord_coef(struct lp_setup_context *setup,
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struct lp_rast_triangle *tri,
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float oneoverarea,
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unsigned slot,
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const float (*v1)[4],
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@ -153,20 +157,21 @@ setup_fragcoord_coef(struct lp_rast_triangle *tri,
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tri->inputs.dadx[slot][1] = 0.0;
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tri->inputs.dady[slot][1] = 1.0;
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/*Z*/
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linear_coef(tri, oneoverarea, slot, v1, v2, v3, 0, 2);
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linear_coef(setup, tri, oneoverarea, slot, v1, v2, v3, 0, 2);
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/*W*/
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linear_coef(tri, oneoverarea, slot, v1, v2, v3, 0, 3);
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linear_coef(setup, tri, oneoverarea, slot, v1, v2, v3, 0, 3);
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}
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static void setup_facing_coef( struct lp_rast_triangle *tri,
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static void setup_facing_coef( struct lp_setup_context *setup,
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struct lp_rast_triangle *tri,
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unsigned slot,
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boolean frontface )
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{
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constant_coef( tri, slot, 1.0f - frontface, 0 );
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constant_coef( tri, slot, 0.0f, 1 ); /* wasted */
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constant_coef( tri, slot, 0.0f, 2 ); /* wasted */
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constant_coef( tri, slot, 0.0f, 3 ); /* wasted */
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constant_coef( setup, tri, slot, 1.0f - frontface, 0 );
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constant_coef( setup, tri, slot, 0.0f, 1 ); /* wasted */
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constant_coef( setup, tri, slot, 0.0f, 2 ); /* wasted */
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constant_coef( setup, tri, slot, 0.0f, 3 ); /* wasted */
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}
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@ -185,7 +190,7 @@ static void setup_tri_coefficients( struct lp_setup_context *setup,
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/* The internal position input is in slot zero:
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*/
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setup_fragcoord_coef(tri, oneoverarea, 0, v1, v2, v3);
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setup_fragcoord_coef(setup, tri, oneoverarea, 0, v1, v2, v3);
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/* setup interpolation for all the remaining attributes:
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*/
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@ -196,27 +201,27 @@ static void setup_tri_coefficients( struct lp_setup_context *setup,
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switch (setup->fs.input[slot].interp) {
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case LP_INTERP_CONSTANT:
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for (i = 0; i < NUM_CHANNELS; i++)
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constant_coef(tri, slot+1, v3[vert_attr][i], i);
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constant_coef(setup, tri, slot+1, v3[vert_attr][i], i);
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break;
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case LP_INTERP_LINEAR:
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for (i = 0; i < NUM_CHANNELS; i++)
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linear_coef(tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i);
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linear_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i);
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break;
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case LP_INTERP_PERSPECTIVE:
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for (i = 0; i < NUM_CHANNELS; i++)
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perspective_coef(tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i);
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perspective_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i);
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break;
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case LP_INTERP_POSITION:
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/* XXX: fix me - duplicates the values in slot zero.
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*/
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setup_fragcoord_coef(tri, oneoverarea, slot+1, v1, v2, v3);
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setup_fragcoord_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3);
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break;
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case LP_INTERP_FACING:
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setup_facing_coef(tri, slot+1, frontface);
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setup_facing_coef(setup, tri, slot+1, frontface);
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break;
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default:
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@ -281,12 +286,12 @@ do_triangle_ccw(struct lp_setup_context *setup,
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boolean frontfacing )
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{
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/* x/y positions in fixed point */
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const int x1 = subpixel_snap(v1[0][0]);
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const int x2 = subpixel_snap(v2[0][0]);
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const int x3 = subpixel_snap(v3[0][0]);
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const int y1 = subpixel_snap(v1[0][1]);
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const int y2 = subpixel_snap(v2[0][1]);
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const int y3 = subpixel_snap(v3[0][1]);
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const int x1 = subpixel_snap(v1[0][0] + 0.5 - setup->pixel_offset);
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const int x2 = subpixel_snap(v2[0][0] + 0.5 - setup->pixel_offset);
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const int x3 = subpixel_snap(v3[0][0] + 0.5 - setup->pixel_offset);
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const int y1 = subpixel_snap(v1[0][1] + 0.5 - setup->pixel_offset);
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const int y2 = subpixel_snap(v2[0][1] + 0.5 - setup->pixel_offset);
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const int y3 = subpixel_snap(v3[0][1] + 0.5 - setup->pixel_offset);
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struct lp_scene *scene = lp_setup_get_current_scene(setup);
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struct lp_rast_triangle *tri;
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@ -62,7 +62,8 @@ void llvmpipe_bind_rasterizer_state(struct pipe_context *pipe,
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lp_setup_set_triangle_state( llvmpipe->setup,
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llvmpipe->rasterizer->cull_mode,
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llvmpipe->rasterizer->front_winding == PIPE_WINDING_CCW,
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llvmpipe->rasterizer->scissor);
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llvmpipe->rasterizer->scissor,
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llvmpipe->rasterizer->gl_rasterization_rules);
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}
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llvmpipe->dirty |= LP_NEW_RASTERIZER;
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