diff options
author | Younes Manton <[email protected]> | 2010-04-30 20:42:30 -0400 |
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committer | Younes Manton <[email protected]> | 2010-04-30 20:42:30 -0400 |
commit | a8ea1dacc63ac567498049e5756c247b9fec6cd9 (patch) | |
tree | 4031e2e2b6166bd926b43fa4bbb3aab773a30ee5 /src/gallium/drivers/llvmpipe/lp_setup_tri.c | |
parent | 404fb63b4649f58fce443615e49337d42b8ddece (diff) | |
parent | 35d960cc744c374ccaad48c3d80559b59c74e28a (diff) |
Merge branch 'master' of ssh://git.freedesktop.org/git/mesa/mesa into pipe-video
Conflicts:
src/gallium/auxiliary/Makefile
src/gallium/auxiliary/SConscript
src/gallium/auxiliary/util/u_format.csv
src/gallium/auxiliary/vl/vl_compositor.c
src/gallium/auxiliary/vl/vl_compositor.h
src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.c
src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.h
src/gallium/drivers/identity/id_objects.c
src/gallium/drivers/identity/id_objects.h
src/gallium/drivers/identity/id_screen.c
src/gallium/drivers/nv40/Makefile
src/gallium/drivers/nv40/nv40_screen.c
src/gallium/drivers/softpipe/sp_texture.c
src/gallium/drivers/softpipe/sp_texture.h
src/gallium/drivers/softpipe/sp_video_context.c
src/gallium/drivers/softpipe/sp_video_context.h
src/gallium/include/pipe/p_format.h
src/gallium/include/pipe/p_screen.h
src/gallium/include/pipe/p_video_context.h
src/gallium/include/pipe/p_video_state.h
src/gallium/include/state_tracker/dri1_api.h
src/gallium/include/state_tracker/drm_api.h
src/gallium/state_trackers/dri/common/dri_context.c
src/gallium/state_trackers/xorg/xvmc/attributes.c
src/gallium/state_trackers/xorg/xvmc/block.c
src/gallium/state_trackers/xorg/xvmc/context.c
src/gallium/state_trackers/xorg/xvmc/subpicture.c
src/gallium/state_trackers/xorg/xvmc/surface.c
src/gallium/state_trackers/xorg/xvmc/tests/.gitignore
src/gallium/state_trackers/xorg/xvmc/tests/Makefile
src/gallium/state_trackers/xorg/xvmc/xvmc_private.h
src/gallium/winsys/drm/radeon/core/radeon_drm.c
src/gallium/winsys/g3dvl/vl_winsys.h
src/gallium/winsys/g3dvl/xlib/xsp_winsys.c
src/gallium/winsys/sw/Makefile
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_setup_tri.c')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_setup_tri.c | 119 |
1 files changed, 85 insertions, 34 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_tri.c b/src/gallium/drivers/llvmpipe/lp_setup_tri.c index e75412ac9aa..f8a58165733 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], @@ -153,27 +157,33 @@ 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, +/** + * Setup the fragment input attribute with the front-facing value. + * \param frontface is the triangle front facing? + */ +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 */ + /* convert TRUE to 1.0 and FALSE to -1.0 */ + constant_coef( setup, tri, slot, 2.0f * frontface - 1.0f, 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 */ } /** * Compute the tri->coef[] array dadx, dady, a0 values. */ -static void setup_tri_coefficients( struct setup_context *setup, +static void setup_tri_coefficients( struct lp_setup_context *setup, struct lp_rast_triangle *tri, float oneoverarea, const float (*v1)[4], @@ -185,7 +195,7 @@ static void setup_tri_coefficients( struct 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 +206,27 @@ static void setup_tri_coefficients( struct 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: @@ -267,6 +277,32 @@ alloc_triangle(struct lp_scene *scene, unsigned nr_inputs, unsigned *tri_size) } +/** + * Print triangle vertex attribs (for debug). + */ +static void +print_triangle(struct lp_setup_context *setup, + const float (*v1)[4], + const float (*v2)[4], + const float (*v3)[4]) +{ + uint i; + + debug_printf("llvmpipe triangle\n"); + for (i = 0; i < setup->fs.nr_inputs; i++) { + debug_printf(" v1[%d]: %f %f %f %f\n", i, + v1[i][0], v1[i][1], v1[i][2], v1[i][3]); + } + for (i = 0; i < setup->fs.nr_inputs; i++) { + debug_printf(" v2[%d]: %f %f %f %f\n", i, + v2[i][0], v2[i][1], v2[i][2], v2[i][3]); + } + for (i = 0; i < setup->fs.nr_inputs; i++) { + debug_printf(" v3[%d]: %f %f %f %f\n", i, + v3[i][0], v3[i][1], v3[i][2], v3[i][3]); + } +} + /** * Do basic setup for triangle rasterization and determine which @@ -274,19 +310,19 @@ alloc_triangle(struct lp_scene *scene, unsigned nr_inputs, unsigned *tri_size) * bins for the tiles which we overlap. */ static void -do_triangle_ccw(struct setup_context *setup, +do_triangle_ccw(struct lp_setup_context *setup, const float (*v1)[4], const float (*v2)[4], const float (*v3)[4], 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; @@ -295,6 +331,9 @@ do_triangle_ccw(struct setup_context *setup, int minx, maxx, miny, maxy; unsigned tri_bytes; + if (0) + print_triangle(setup, v1, v2, v3); + tri = alloc_triangle(scene, setup->fs.nr_inputs, &tri_bytes); #ifdef DEBUG @@ -356,6 +395,8 @@ do_triangle_ccw(struct setup_context *setup, */ setup_tri_coefficients( setup, tri, oneoverarea, v1, v2, v3, frontfacing ); + tri->inputs.facing = frontfacing ? 1.0F : -1.0F; + /* half-edge constants, will be interated over the whole render target. */ tri->c1 = tri->dy12 * x1 - tri->dx12 * y1; @@ -565,7 +606,10 @@ do_triangle_ccw(struct setup_context *setup, } -static void triangle_cw( struct setup_context *setup, +/** + * Draw triangle if it's CW, cull otherwise. + */ +static void triangle_cw( struct lp_setup_context *setup, const float (*v0)[4], const float (*v1)[4], const float (*v2)[4] ) @@ -574,7 +618,10 @@ static void triangle_cw( struct setup_context *setup, } -static void triangle_ccw( struct setup_context *setup, +/** + * Draw triangle if it's CCW, cull otherwise. + */ +static void triangle_ccw( struct lp_setup_context *setup, const float (*v0)[4], const float (*v1)[4], const float (*v2)[4] ) @@ -583,7 +630,11 @@ static void triangle_ccw( struct setup_context *setup, } -static void triangle_both( struct setup_context *setup, + +/** + * Draw triangle whether it's CW or CCW. + */ +static void triangle_both( struct lp_setup_context *setup, const float (*v0)[4], const float (*v1)[4], const float (*v2)[4] ) @@ -602,7 +653,7 @@ static void triangle_both( struct setup_context *setup, } -static void triangle_nop( struct setup_context *setup, +static void triangle_nop( struct lp_setup_context *setup, const float (*v0)[4], const float (*v1)[4], const float (*v2)[4] ) @@ -611,7 +662,7 @@ static void triangle_nop( struct setup_context *setup, void -lp_setup_choose_triangle( struct setup_context *setup ) +lp_setup_choose_triangle( struct lp_setup_context *setup ) { switch (setup->cullmode) { case PIPE_WINDING_NONE: |