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nv2a: Add offset to FF inv. viewport matrix

This commit is contained in:
Matt Borgerson 2021-07-02 13:43:16 -07:00 committed by mborgerson
parent 315ac1ceaa
commit aaf8522431
1 changed files with 10 additions and 9 deletions
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19
hw/xbox/nv2a/pgraph.c
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@ -3575,23 +3575,24 @@ static void pgraph_shader_update_constants(PGRAPHState *pg,
}
/* estimate the viewport by assuming it matches the surface ... */
//FIXME: Get surface dimensions?
float m11 = 0.5 * pg->surface_shape.clip_width;
float m22 = -0.5 * pg->surface_shape.clip_height;
float m33 = zclip_max - zclip_min;
//float m41 = m11;
//float m42 = -m22;
float m43 = zclip_min;
//float m44 = 1.0;
unsigned int aa_width = 1, aa_height = 1;
pgraph_apply_anti_aliasing_factor(pg, &aa_width, &aa_height);
float m11 = 0.5 * (pg->surface_binding_dim.width/aa_width);
float m22 = -0.5 * (pg->surface_binding_dim.height/aa_height);
float m33 = zclip_max - zclip_min;
float m41 = *(float*)&pg->vsh_constants[NV_IGRAPH_XF_XFCTX_VPOFF][0];
float m42 = *(float*)&pg->vsh_constants[NV_IGRAPH_XF_XFCTX_VPOFF][1];
float m43 = zclip_min;
if (m33 == 0.0) {
m33 = 1.0;
}
float invViewport[16] = {
1.0/m11, 0, 0, 0,
0, 1.0/m22, 0, 0,
0, 0, 1.0/m33, 0,
-1.0, 1.0, -m43/m33, 1.0
-1.0+m41/m11, 1.0+m42/m22, -m43/m33, 1.0
};
if (binding->inv_viewport_loc != -1) {