diff options
author | Marek Olšák <maraeo@gmail.com> | 2009-12-12 23:38:17 +0100 |
---|---|---|
committer | Keith Whitwell <keithw@vmware.com> | 2009-12-15 17:59:54 +0000 |
commit | 4c61022b4a19f020ef8f6c635ecffa54a914fd7a (patch) | |
tree | 5d3ffd5124a6422e0833026cd0dd275bd2b1cdf0 /src/gallium/auxiliary/util/u_gen_mipmap.c | |
parent | dff4c9ed559ae025d1d8fe7b9d1cea5a973c2225 (diff) |
util: add a function which converts 2D coordinates to cubemap coordinates
The code was taken over from u_gen_mipmap.
Diffstat (limited to 'src/gallium/auxiliary/util/u_gen_mipmap.c')
-rw-r--r-- | src/gallium/auxiliary/util/u_gen_mipmap.c | 55 |
1 files changed, 3 insertions, 52 deletions
diff --git a/src/gallium/auxiliary/util/u_gen_mipmap.c b/src/gallium/auxiliary/util/u_gen_mipmap.c index 1728e661cd..69ff3b9dd9 100644 --- a/src/gallium/auxiliary/util/u_gen_mipmap.c +++ b/src/gallium/auxiliary/util/u_gen_mipmap.c @@ -46,6 +46,7 @@ #include "util/u_gen_mipmap.h" #include "util/u_simple_shaders.h" #include "util/u_math.h" +#include "util/u_texture.h" #include "cso_cache/cso_context.h" @@ -1383,59 +1384,9 @@ set_vertex_data(struct gen_mipmap_state *ctx, static const float st[4][2] = { {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f} }; - float rx, ry, rz; - uint i; - - /* loop over quad verts */ - for (i = 0; i < 4; i++) { - /* Compute sc = +/-scale and tc = +/-scale. - * Not +/-1 to avoid cube face selection ambiguity near the edges, - * though that can still sometimes happen with this scale factor... - */ - const float scale = 0.9999f; - const float sc = (2.0f * st[i][0] - 1.0f) * scale; - const float tc = (2.0f * st[i][1] - 1.0f) * scale; - - switch (face) { - case PIPE_TEX_FACE_POS_X: - rx = 1.0f; - ry = -tc; - rz = -sc; - break; - case PIPE_TEX_FACE_NEG_X: - rx = -1.0f; - ry = -tc; - rz = sc; - break; - case PIPE_TEX_FACE_POS_Y: - rx = sc; - ry = 1.0f; - rz = tc; - break; - case PIPE_TEX_FACE_NEG_Y: - rx = sc; - ry = -1.0f; - rz = -tc; - break; - case PIPE_TEX_FACE_POS_Z: - rx = sc; - ry = -tc; - rz = 1.0f; - break; - case PIPE_TEX_FACE_NEG_Z: - rx = -sc; - ry = -tc; - rz = -1.0f; - break; - default: - rx = ry = rz = 0.0f; - assert(0); - } - ctx->vertices[i][1][0] = rx; /*s*/ - ctx->vertices[i][1][1] = ry; /*t*/ - ctx->vertices[i][1][2] = rz; /*r*/ - } + util_map_texcoords2d_onto_cubemap(face, &st[0][0], 2, + &ctx->vertices[0][1][0], 8); } else { /* 1D/2D */ |