Module: Mesa Branch: master Commit: a80e33f40731f07e8a39896bfdcd1b1504aedc1f URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a80e33f40731f07e8a39896bfdcd1b1504aedc1f
Author: José Fonseca <[email protected]> Date: Sat Mar 13 11:22:39 2010 +0000 llvmpipe: Obey rasterization rules. Replicates softpipe. --- src/gallium/drivers/llvmpipe/lp_setup.c | 4 +- src/gallium/drivers/llvmpipe/lp_setup.h | 3 +- src/gallium/drivers/llvmpipe/lp_setup_context.h | 1 + src/gallium/drivers/llvmpipe/lp_setup_tri.c | 59 +++++++++++--------- src/gallium/drivers/llvmpipe/lp_state_rasterizer.c | 3 +- 5 files changed, 40 insertions(+), 30 deletions(-) diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c index ba55daf..16128c3 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup.c +++ b/src/gallium/drivers/llvmpipe/lp_setup.c @@ -337,7 +337,8 @@ void lp_setup_set_triangle_state( struct lp_setup_context *setup, unsigned cull_mode, boolean ccw_is_frontface, - boolean scissor ) + boolean scissor, + boolean gl_rasterization_rules) { LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__); @@ -345,6 +346,7 @@ lp_setup_set_triangle_state( struct lp_setup_context *setup, setup->cullmode = cull_mode; setup->triangle = first_triangle; setup->scissor_test = scissor; + setup->pixel_offset = gl_rasterization_rules ? 0.5f : 0.0f; } diff --git a/src/gallium/drivers/llvmpipe/lp_setup.h b/src/gallium/drivers/llvmpipe/lp_setup.h index 7124486..be1bf96 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup.h +++ b/src/gallium/drivers/llvmpipe/lp_setup.h @@ -89,7 +89,8 @@ void lp_setup_set_triangle_state( struct lp_setup_context *setup, unsigned cullmode, boolean front_is_ccw, - boolean scissor ); + boolean scissor, + boolean gl_rasterization_rules ); void lp_setup_set_fs_inputs( struct lp_setup_context *setup, diff --git a/src/gallium/drivers/llvmpipe/lp_setup_context.h b/src/gallium/drivers/llvmpipe/lp_setup_context.h index d3c9949..464fb36 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_context.h +++ b/src/gallium/drivers/llvmpipe/lp_setup_context.h @@ -89,6 +89,7 @@ struct lp_setup_context boolean ccw_is_frontface; boolean scissor_test; unsigned cullmode; + float pixel_offset; struct pipe_framebuffer_state fb; diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c index 8d781e3..ac6264d 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_tri.c +++ b/src/gallium/drivers/llvmpipe/lp_setup_tri.c @@ -41,7 +41,8 @@ /** * Compute a0 for a constant-valued coefficient (GL_FLAT shading). */ -static void constant_coef( struct lp_rast_triangle *tri, +static void constant_coef( struct lp_setup_context *setup, + struct lp_rast_triangle *tri, unsigned slot, const float value, unsigned i ) @@ -56,7 +57,8 @@ static void constant_coef( struct lp_rast_triangle *tri, * Compute a0, dadx and dady for a linearly interpolated coefficient, * for a triangle. */ -static void linear_coef( struct lp_rast_triangle *tri, +static void linear_coef( struct lp_setup_context *setup, + struct lp_rast_triangle *tri, float oneoverarea, unsigned slot, const float (*v1)[4], @@ -90,8 +92,8 @@ static void linear_coef( struct lp_rast_triangle *tri, * instead - i'll switch to this later. */ tri->inputs.a0[slot][i] = (a1 - - (dadx * (v1[0][0] - 0.5f) + - dady * (v1[0][1] - 0.5f))); + (dadx * (v1[0][0] - setup->pixel_offset) + + dady * (v1[0][1] - setup->pixel_offset))); } @@ -103,7 +105,8 @@ static void linear_coef( struct lp_rast_triangle *tri, * Later, when we compute the value at a particular fragment position we'll * divide the interpolated value by the interpolated W at that fragment. */ -static void perspective_coef( struct lp_rast_triangle *tri, +static void perspective_coef( struct lp_setup_context *setup, + struct lp_rast_triangle *tri, float oneoverarea, unsigned slot, const float (*v1)[4], @@ -125,8 +128,8 @@ static void perspective_coef( struct lp_rast_triangle *tri, tri->inputs.dadx[slot][i] = dadx; tri->inputs.dady[slot][i] = dady; tri->inputs.a0[slot][i] = (a1 - - (dadx * (v1[0][0] - 0.5f) + - dady * (v1[0][1] - 0.5f))); + (dadx * (v1[0][0] - setup->pixel_offset) + + dady * (v1[0][1] - setup->pixel_offset))); } @@ -137,7 +140,8 @@ static void perspective_coef( struct lp_rast_triangle *tri, * We could do a bit less work if we'd examine gl_FragCoord's swizzle mask. */ static void -setup_fragcoord_coef(struct lp_rast_triangle *tri, +setup_fragcoord_coef(struct lp_setup_context *setup, + struct lp_rast_triangle *tri, float oneoverarea, unsigned slot, const float (*v1)[4], @@ -153,20 +157,21 @@ setup_fragcoord_coef(struct lp_rast_triangle *tri, tri->inputs.dadx[slot][1] = 0.0; tri->inputs.dady[slot][1] = 1.0; /*Z*/ - linear_coef(tri, oneoverarea, slot, v1, v2, v3, 0, 2); + linear_coef(setup, tri, oneoverarea, slot, v1, v2, v3, 0, 2); /*W*/ - linear_coef(tri, oneoverarea, slot, v1, v2, v3, 0, 3); + linear_coef(setup, tri, oneoverarea, slot, v1, v2, v3, 0, 3); } -static void setup_facing_coef( struct lp_rast_triangle *tri, +static void setup_facing_coef( struct lp_setup_context *setup, + struct lp_rast_triangle *tri, unsigned slot, boolean frontface ) { - constant_coef( tri, slot, 1.0f - frontface, 0 ); - constant_coef( tri, slot, 0.0f, 1 ); /* wasted */ - constant_coef( tri, slot, 0.0f, 2 ); /* wasted */ - constant_coef( tri, slot, 0.0f, 3 ); /* wasted */ + constant_coef( setup, tri, slot, 1.0f - frontface, 0 ); + constant_coef( setup, tri, slot, 0.0f, 1 ); /* wasted */ + constant_coef( setup, tri, slot, 0.0f, 2 ); /* wasted */ + constant_coef( setup, tri, slot, 0.0f, 3 ); /* wasted */ } @@ -185,7 +190,7 @@ static void setup_tri_coefficients( struct lp_setup_context *setup, /* The internal position input is in slot zero: */ - setup_fragcoord_coef(tri, oneoverarea, 0, v1, v2, v3); + setup_fragcoord_coef(setup, tri, oneoverarea, 0, v1, v2, v3); /* setup interpolation for all the remaining attributes: */ @@ -196,27 +201,27 @@ static void setup_tri_coefficients( struct lp_setup_context *setup, switch (setup->fs.input[slot].interp) { case LP_INTERP_CONSTANT: for (i = 0; i < NUM_CHANNELS; i++) - constant_coef(tri, slot+1, v3[vert_attr][i], i); + constant_coef(setup, tri, slot+1, v3[vert_attr][i], i); break; case LP_INTERP_LINEAR: for (i = 0; i < NUM_CHANNELS; i++) - linear_coef(tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i); + linear_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i); break; case LP_INTERP_PERSPECTIVE: for (i = 0; i < NUM_CHANNELS; i++) - perspective_coef(tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i); + perspective_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3, vert_attr, i); break; case LP_INTERP_POSITION: /* XXX: fix me - duplicates the values in slot zero. */ - setup_fragcoord_coef(tri, oneoverarea, slot+1, v1, v2, v3); + setup_fragcoord_coef(setup, tri, oneoverarea, slot+1, v1, v2, v3); break; case LP_INTERP_FACING: - setup_facing_coef(tri, slot+1, frontface); + setup_facing_coef(setup, tri, slot+1, frontface); break; default: @@ -281,12 +286,12 @@ do_triangle_ccw(struct lp_setup_context *setup, boolean frontfacing ) { /* x/y positions in fixed point */ - const int x1 = subpixel_snap(v1[0][0]); - const int x2 = subpixel_snap(v2[0][0]); - const int x3 = subpixel_snap(v3[0][0]); - const int y1 = subpixel_snap(v1[0][1]); - const int y2 = subpixel_snap(v2[0][1]); - const int y3 = subpixel_snap(v3[0][1]); + const int x1 = subpixel_snap(v1[0][0] + 0.5 - setup->pixel_offset); + const int x2 = subpixel_snap(v2[0][0] + 0.5 - setup->pixel_offset); + const int x3 = subpixel_snap(v3[0][0] + 0.5 - setup->pixel_offset); + const int y1 = subpixel_snap(v1[0][1] + 0.5 - setup->pixel_offset); + const int y2 = subpixel_snap(v2[0][1] + 0.5 - setup->pixel_offset); + const int y3 = subpixel_snap(v3[0][1] + 0.5 - setup->pixel_offset); struct lp_scene *scene = lp_setup_get_current_scene(setup); struct lp_rast_triangle *tri; diff --git a/src/gallium/drivers/llvmpipe/lp_state_rasterizer.c b/src/gallium/drivers/llvmpipe/lp_state_rasterizer.c index feb0128..6df3ef2 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_rasterizer.c +++ b/src/gallium/drivers/llvmpipe/lp_state_rasterizer.c @@ -62,7 +62,8 @@ void llvmpipe_bind_rasterizer_state(struct pipe_context *pipe, lp_setup_set_triangle_state( llvmpipe->setup, llvmpipe->rasterizer->cull_mode, llvmpipe->rasterizer->front_winding == PIPE_WINDING_CCW, - llvmpipe->rasterizer->scissor); + llvmpipe->rasterizer->scissor, + llvmpipe->rasterizer->gl_rasterization_rules); } llvmpipe->dirty |= LP_NEW_RASTERIZER; _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
