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st/mesa: write vertices directly into the buffer for glClear fallback

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This commit is contained in:
Marek Olšák 2012-04-13 20:37:41 +02:00
parent 2b151bbb95
commit a8a478999c
2 changed files with 27 additions and 26 deletions
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52
src/mesa/state_tracker/st_cb_clear.c
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@ -139,35 +139,37 @@ draw_quad(struct st_context *st,
struct pipe_context *pipe = st->pipe;
struct pipe_resource *vbuf = NULL;
GLuint i, offset;
float (*vertices)[2][4]; /**< vertex pos + color */
/* positions */
st->clear.vertices[0][0][0] = x0;
st->clear.vertices[0][0][1] = y0;
st->clear.vertices[1][0][0] = x1;
st->clear.vertices[1][0][1] = y0;
st->clear.vertices[2][0][0] = x1;
st->clear.vertices[2][0][1] = y1;
st->clear.vertices[3][0][0] = x0;
st->clear.vertices[3][0][1] = y1;
/* same for all verts: */
for (i = 0; i < 4; i++) {
st->clear.vertices[i][0][2] = z;
st->clear.vertices[i][0][3] = 1.0;
st->clear.vertices[i][1][0] = color->f[0];
st->clear.vertices[i][1][1] = color->f[1];
st->clear.vertices[i][1][2] = color->f[2];
st->clear.vertices[i][1][3] = color->f[3];
}
u_upload_data(st->uploader, 0, sizeof(st->clear.vertices),
st->clear.vertices, &offset, &vbuf);
u_upload_alloc(st->uploader, 0, 4 * sizeof(vertices[0]), &offset, &vbuf,
(void**)&vertices);
if (!vbuf) {
return;
}
/* positions */
vertices[0][0][0] = x0;
vertices[0][0][1] = y0;
vertices[1][0][0] = x1;
vertices[1][0][1] = y0;
vertices[2][0][0] = x1;
vertices[2][0][1] = y1;
vertices[3][0][0] = x0;
vertices[3][0][1] = y1;
/* same for all verts: */
for (i = 0; i < 4; i++) {
vertices[i][0][2] = z;
vertices[i][0][3] = 1.0;
vertices[i][1][0] = color->f[0];
vertices[i][1][1] = color->f[1];
vertices[i][1][2] = color->f[2];
vertices[i][1][3] = color->f[3];
}
u_upload_unmap(st->uploader);
/* draw */

1
src/mesa/state_tracker/st_context.h
View file

@ -170,7 +170,6 @@ struct st_context
struct pipe_viewport_state viewport;
void *vs;
void *fs;
float vertices[4][2][4]; /**< vertex pos + color */
boolean enable_ds_separate;
} clear;