From 64055478fef6a226dd4a5c297a0b63a73808fc50 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Fri, 27 Aug 2010 11:03:58 +0100 Subject: llvmpipe: eliminate tri->dx, tri->dy values Use an internal struct for line setup information. --- src/gallium/drivers/llvmpipe/lp_rast.h | 5 -- src/gallium/drivers/llvmpipe/lp_setup_line.c | 76 ++++++++++++++-------------- 2 files changed, 39 insertions(+), 42 deletions(-) diff --git a/src/gallium/drivers/llvmpipe/lp_rast.h b/src/gallium/drivers/llvmpipe/lp_rast.h index 37b4fdc31e..b4564ef33b 100644 --- a/src/gallium/drivers/llvmpipe/lp_rast.h +++ b/src/gallium/drivers/llvmpipe/lp_rast.h @@ -116,11 +116,6 @@ struct lp_rast_triangle { /* inputs for the shader */ struct lp_rast_shader_inputs inputs; - /* XXX: temporarily use these additional fields for line - * coefficient setup - */ - float dx, dy; - #ifdef DEBUG float v[3][2]; #endif diff --git a/src/gallium/drivers/llvmpipe/lp_setup_line.c b/src/gallium/drivers/llvmpipe/lp_setup_line.c index ebf000dd19..cf770f521d 100644 --- a/src/gallium/drivers/llvmpipe/lp_setup_line.c +++ b/src/gallium/drivers/llvmpipe/lp_setup_line.c @@ -38,6 +38,15 @@ #define NUM_CHANNELS 4 +struct lp_line_info { + + float dx; + float dy; + float oneoverarea; + + const float (*v1)[4]; + const float (*v2)[4]; +}; /** @@ -61,26 +70,24 @@ static void constant_coef( struct lp_setup_context *setup, */ static void linear_coef( struct lp_setup_context *setup, struct lp_rast_triangle *tri, - float oneoverarea, + struct lp_line_info *info, unsigned slot, - const float (*v1)[4], - const float (*v2)[4], unsigned vert_attr, unsigned i) { - float a1 = v1[vert_attr][i]; - float a2 = v2[vert_attr][i]; + float a1 = info->v1[vert_attr][i]; + float a2 = info->v2[vert_attr][i]; float da21 = a1 - a2; - float dadx = da21 * tri->dx * oneoverarea; - float dady = da21 * tri->dy * oneoverarea; + float dadx = da21 * info->dx * info->oneoverarea; + float dady = da21 * info->dy * info->oneoverarea; tri->inputs.dadx[slot][i] = dadx; tri->inputs.dady[slot][i] = dady; tri->inputs.a0[slot][i] = (a1 - - (dadx * (v1[0][0] - setup->pixel_offset) + - dady * (v1[0][1] - setup->pixel_offset))); + (dadx * (info->v1[0][0] - setup->pixel_offset) + + dady * (info->v1[0][1] - setup->pixel_offset))); } @@ -94,37 +101,33 @@ static void linear_coef( struct lp_setup_context *setup, */ static void perspective_coef( struct lp_setup_context *setup, struct lp_rast_triangle *tri, - float oneoverarea, + struct lp_line_info *info, unsigned slot, - const float (*v1)[4], - const float (*v2)[4], unsigned vert_attr, unsigned i) { /* premultiply by 1/w (v[0][3] is always 1/w): */ - float a1 = v1[vert_attr][i] * v1[0][3]; - float a2 = v2[vert_attr][i] * v2[0][3]; + float a1 = info->v1[vert_attr][i] * info->v1[0][3]; + float a2 = info->v2[vert_attr][i] * info->v2[0][3]; float da21 = a1 - a2; - float dadx = da21 * tri->dx * oneoverarea; - float dady = da21 * tri->dy * oneoverarea; + float dadx = da21 * info->dx * info->oneoverarea; + float dady = da21 * info->dy * info->oneoverarea; tri->inputs.dadx[slot][i] = dadx; tri->inputs.dady[slot][i] = dady; tri->inputs.a0[slot][i] = (a1 - - (dadx * (v1[0][0] - setup->pixel_offset) + - dady * (v1[0][1] - setup->pixel_offset))); + (dadx * (info->v1[0][0] - setup->pixel_offset) + + dady * (info->v1[0][1] - setup->pixel_offset))); } static void setup_fragcoord_coef( struct lp_setup_context *setup, struct lp_rast_triangle *tri, - float oneoverarea, + struct lp_line_info *info, unsigned slot, - const float (*v1)[4], - const float (*v2)[4], unsigned usage_mask) { /*X*/ @@ -143,12 +146,12 @@ setup_fragcoord_coef( struct lp_setup_context *setup, /*Z*/ if (usage_mask & TGSI_WRITEMASK_Z) { - linear_coef(setup, tri, oneoverarea, slot, v1, v2, 0, 2); + linear_coef(setup, tri, info, slot, 0, 2); } /*W*/ if (usage_mask & TGSI_WRITEMASK_W) { - linear_coef(setup, tri, oneoverarea, slot, v1, v2, 0, 3); + linear_coef(setup, tri, info, slot, 0, 3); } } @@ -157,9 +160,7 @@ setup_fragcoord_coef( struct lp_setup_context *setup, */ static void setup_line_coefficients( struct lp_setup_context *setup, struct lp_rast_triangle *tri, - float oneoverarea, - const float (*v1)[4], - const float (*v2)[4]) + struct lp_line_info *info) { unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ; unsigned slot; @@ -176,25 +177,25 @@ static void setup_line_coefficients( struct lp_setup_context *setup, if (setup->flatshade_first) { for (i = 0; i < NUM_CHANNELS; i++) if (usage_mask & (1 << i)) - constant_coef(setup, tri, slot+1, v1[vert_attr][i], i); + constant_coef(setup, tri, slot+1, info->v1[vert_attr][i], i); } else { for (i = 0; i < NUM_CHANNELS; i++) if (usage_mask & (1 << i)) - constant_coef(setup, tri, slot+1, v2[vert_attr][i], i); + constant_coef(setup, tri, slot+1, info->v2[vert_attr][i], i); } break; case LP_INTERP_LINEAR: for (i = 0; i < NUM_CHANNELS; i++) if (usage_mask & (1 << i)) - linear_coef(setup, tri, oneoverarea, slot+1, v1, v2, vert_attr, i); + linear_coef(setup, tri, info, slot+1, vert_attr, i); break; case LP_INTERP_PERSPECTIVE: for (i = 0; i < NUM_CHANNELS; i++) if (usage_mask & (1 << i)) - perspective_coef(setup, tri, oneoverarea, slot+1, v1, v2, vert_attr, i); + perspective_coef(setup, tri, info, slot+1, vert_attr, i); fragcoord_usage_mask |= TGSI_WRITEMASK_W; break; @@ -214,7 +215,7 @@ static void setup_line_coefficients( struct lp_setup_context *setup, /* The internal position input is in slot zero: */ - setup_fragcoord_coef(setup, tri, oneoverarea, 0, v1, v2, + setup_fragcoord_coef(setup, tri, info, 0, fragcoord_usage_mask); } @@ -269,7 +270,7 @@ lp_setup_line( struct lp_setup_context *setup, { struct lp_scene *scene = lp_setup_get_current_scene(setup); struct lp_rast_triangle *line; - float oneoverarea; + struct lp_line_info info; float width = MAX2(1.0, setup->line_width); struct u_rect bbox; unsigned tri_bytes; @@ -560,9 +561,6 @@ lp_setup_line( struct lp_setup_context *setup, line->v[1][1] = v2[0][1]; #endif - line->dx = dx; - line->dy = dy; - /* calculate the deltas */ line->plane[0].dcdy = x[0] - x[1]; line->plane[1].dcdy = x[1] - x[2]; @@ -575,11 +573,15 @@ lp_setup_line( struct lp_setup_context *setup, line->plane[3].dcdx = y[3] - y[0]; - oneoverarea = 1.0f / (dx * dx + dy * dy); + info.oneoverarea = 1.0f / (dx * dx + dy * dy); + info.dx = dx; + info.dy = dy; + info.v1 = v1; + info.v2 = v2; /* Setup parameter interpolants: */ - setup_line_coefficients( setup, line, oneoverarea, v1, v2); + setup_line_coefficients( setup, line, &info); line->inputs.facing = 1.0F; line->inputs.state = setup->fs.stored; 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