/**
* Update vertex program state/atom. This involves translating the
* Mesa vertex program into a gallium fragment program and binding it.
*/
static void
update_vp( struct st_context *st )
{
struct st_vertex_program *stvp;
struct st_vp_variant_key key;
/* find active shader and params -- Should be covered by
* ST_NEW_VERTEX_PROGRAM
*/
assert(st->ctx->VertexProgram._Current);
stvp = st_vertex_program(st->ctx->VertexProgram._Current);
assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);
memset(&key, 0, sizeof key);
key.st = st->has_shareable_shaders ? NULL : st;
/* When this is true, we will add an extra input to the vertex
* shader translation (for edgeflags), an extra output with
* edgeflag semantics, and extend the vertex shader to pass through
* the input to the output. We'll need to use similar logic to set
* up the extra vertex_element input for edgeflags.
*/
key.passthrough_edgeflags = st->vertdata_edgeflags;
key.clamp_color = st->clamp_vert_color_in_shader &&
st->ctx->Light._ClampVertexColor &&
(stvp->Base.Base.OutputsWritten &
(VARYING_SLOT_COL0 |
VARYING_SLOT_COL1 |
VARYING_SLOT_BFC0 |
VARYING_SLOT_BFC1));
st->vp_variant = st_get_vp_variant(st, stvp, &key);
st_reference_vertprog(st, &st->vp, stvp);
cso_set_vertex_shader_handle(st->cso_context,
st->vp_variant->driver_shader);
st->vertex_result_to_slot = stvp->result_to_output;
}
/**
* Compile one shader variant.
*/
void
st_precompile_shader_variant(struct st_context *st,
struct gl_program *prog)
{
switch (prog->Target) {
case GL_VERTEX_PROGRAM_ARB: {
struct st_vertex_program *p = (struct st_vertex_program *)prog;
struct st_vp_variant_key key;
memset(&key, 0, sizeof(key));
key.st = st;
st_get_vp_variant(st, p, &key);
break;
}
case GL_GEOMETRY_PROGRAM_NV: {
struct st_geometry_program *p = (struct st_geometry_program *)prog;
struct st_gp_variant_key key;
memset(&key, 0, sizeof(key));
key.st = st;
st_get_gp_variant(st, p, &key);
break;
}
case GL_FRAGMENT_PROGRAM_ARB: {
struct st_fragment_program *p = (struct st_fragment_program *)prog;
struct st_fp_variant_key key;
memset(&key, 0, sizeof(key));
key.st = st;
st_get_fp_variant(st, p, &key);
break;
}
default:
assert(0);
}
}
/**
* Update vertex program state/atom. This involves translating the
* Mesa vertex program into a gallium fragment program and binding it.
*/
static void
update_vp( struct st_context *st )
{
struct st_vertex_program *stvp;
struct st_vp_variant_key key;
/* find active shader and params -- Should be covered by
* ST_NEW_VERTEX_PROGRAM
*/
assert(st->ctx->VertexProgram._Current);
stvp = st_vertex_program(st->ctx->VertexProgram._Current);
assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);
memset(&key, 0, sizeof key);
key.st = st; /* variants are per-context */
/* When this is true, we will add an extra input to the vertex
* shader translation (for edgeflags), an extra output with
* edgeflag semantics, and extend the vertex shader to pass through
* the input to the output. We'll need to use similar logic to set
* up the extra vertex_element input for edgeflags.
* _NEW_POLYGON, ST_NEW_EDGEFLAGS_DATA
*/
key.passthrough_edgeflags = (st->vertdata_edgeflags && (
st->ctx->Polygon.FrontMode != GL_FILL ||
st->ctx->Polygon.BackMode != GL_FILL));
key.clamp_color = st->clamp_vert_color_in_shader &&
st->ctx->Light._ClampVertexColor;
st->vp_variant = st_get_vp_variant(st, stvp, &key);
st_reference_vertprog(st, &st->vp, stvp);
cso_set_vertex_shader_handle(st->cso_context,
st->vp_variant->driver_shader);
st->vertex_result_to_slot = stvp->result_to_output;
}
