static void
st_RasterPos(struct gl_context *ctx, const GLfloat v[4])
{
struct st_context *st = st_context(ctx);
struct draw_context *draw = st->draw;
struct rastpos_stage *rs;
const struct gl_client_array **saved_arrays = ctx->Array._DrawArrays;
if (ctx->VertexProgram._Current == NULL ||
ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram) {
/* No vertex shader/program is enabled, used the simple/fast fixed-
* function implementation of RasterPos.
*/
_mesa_RasterPos(ctx, v);
return;
}
if (st->rastpos_stage) {
/* get rastpos stage info */
rs = rastpos_stage(st->rastpos_stage);
}
else {
/* create rastpos draw stage */
rs = new_draw_rastpos_stage(ctx, draw);
st->rastpos_stage = &rs->stage;
}
/* plug our rastpos stage into the draw module */
draw_set_rasterize_stage(st->draw, st->rastpos_stage);
/* make sure everything's up to date */
st_validate_state(st, ST_PIPELINE_RENDER);
/* This will get set only if rastpos_point(), above, gets called */
ctx->Current.RasterPosValid = GL_FALSE;
/* All vertex attribs but position were previously initialized above.
* Just plug in position pointer now.
*/
rs->array[0].Ptr = (GLubyte *) v;
/* Draw the point.
*
* Don't set DriverFlags.NewArray.
* st_feedback_draw_vbo doesn't check for that flag. */
ctx->Array._DrawArrays = rs->arrays;
st_feedback_draw_vbo(ctx, &rs->prim, 1, NULL, GL_TRUE, 0, 1,
NULL, 0, NULL);
ctx->Array._DrawArrays = saved_arrays;
/* restore draw's rasterization stage depending on rendermode */
if (ctx->RenderMode == GL_FEEDBACK) {
draw_set_rasterize_stage(draw, st->feedback_stage);
}
else if (ctx->RenderMode == GL_SELECT) {
draw_set_rasterize_stage(draw, st->selection_stage);
}
}
/**
* Normally, this function would render a GL_POINT.
*/
static void
rastpos_point(struct draw_stage *stage, struct prim_header *prim)
{
struct rastpos_stage *rs = rastpos_stage(stage);
struct gl_context *ctx = rs->ctx;
struct st_context *st = st_context(ctx);
const GLfloat height = (GLfloat) ctx->DrawBuffer->Height;
const GLuint *outputMapping = st->vertex_result_to_slot;
const GLfloat *pos;
GLuint i;
/* if we get here, we didn't get clipped */
ctx->Current.RasterPosValid = GL_TRUE;
/* update raster pos */
pos = prim->v[0]->data[0];
ctx->Current.RasterPos[0] = pos[0];
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP)
ctx->Current.RasterPos[1] = height - pos[1]; /* invert Y */
else
ctx->Current.RasterPos[1] = pos[1];
ctx->Current.RasterPos[2] = pos[2];
ctx->Current.RasterPos[3] = pos[3];
/* update other raster attribs */
update_attrib(ctx, outputMapping, prim->v[0],
ctx->Current.RasterColor,
VARYING_SLOT_COL0, VERT_ATTRIB_COLOR0);
update_attrib(ctx, outputMapping, prim->v[0],
ctx->Current.RasterSecondaryColor,
VARYING_SLOT_COL1, VERT_ATTRIB_COLOR1);
for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
update_attrib(ctx, outputMapping, prim->v[0],
ctx->Current.RasterTexCoords[i],
VARYING_SLOT_TEX0 + i, VERT_ATTRIB_TEX0 + i);
}
if (ctx->RenderMode == GL_SELECT) {
_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
}
}
static void
st_RasterPos(struct gl_context *ctx, const GLfloat v[4])
{
struct st_context *st = st_context(ctx);
struct draw_context *draw = st->draw;
struct rastpos_stage *rs;
if (st->rastpos_stage) {
/* get rastpos stage info */
rs = rastpos_stage(st->rastpos_stage);
}
else {
/* create rastpos draw stage */
rs = new_draw_rastpos_stage(ctx, draw);
st->rastpos_stage = &rs->stage;
}
/* plug our rastpos stage into the draw module */
draw_set_rasterize_stage(st->draw, st->rastpos_stage);
/* make sure everything's up to date */
st_validate_state(st);
/* This will get set only if rastpos_point(), above, gets called */
ctx->Current.RasterPosValid = GL_FALSE;
/* All vertex attribs but position were previously initialized above.
* Just plug in position pointer now.
*/
rs->array[0].Ptr = (GLubyte *) v;
/* draw the point */
st_feedback_draw_vbo(ctx, rs->arrays, &rs->prim, 1, NULL, GL_TRUE, 0, 1,
NULL);
/* restore draw's rasterization stage depending on rendermode */
if (ctx->RenderMode == GL_FEEDBACK) {
draw_set_rasterize_stage(draw, st->feedback_stage);
}
else if (ctx->RenderMode == GL_SELECT) {
draw_set_rasterize_stage(draw, st->selection_stage);
}
}
