static int emit_vs_consts( struct svga_context *svga,
unsigned dirty )
{
const struct svga_shader_result *result = svga->state.hw_draw.vs;
const struct svga_vs_compile_key *key = &result->key.vkey;
int ret = 0;
unsigned offset;
/* SVGA_NEW_VS_RESULT
*/
if (result == NULL)
return 0;
/* SVGA_NEW_VS_CONST_BUFFER
*/
ret = emit_consts( svga, 0, PIPE_SHADER_VERTEX );
if (ret)
return ret;
offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
/* SVGA_NEW_VS_RESULT
*/
if (key->need_prescale) {
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.scale );
if (ret)
return ret;
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.translate );
if (ret)
return ret;
}
/* SVGA_NEW_ZERO_STRIDE
*/
if (key->zero_stride_vertex_elements) {
unsigned i, curr_zero_stride = 0;
for (i = 0; i < PIPE_MAX_ATTRIBS; ++i) {
if (key->zero_stride_vertex_elements & (1 << i)) {
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->curr.zero_stride_constants +
4 * curr_zero_stride );
if (ret)
return ret;
++curr_zero_stride;
}
}
}
return 0;
}
static int emit_fs_consts( struct svga_context *svga,
unsigned dirty )
{
const struct svga_shader_result *result = svga->state.hw_draw.fs;
const struct svga_fs_compile_key *key = &result->key.fkey;
int ret = 0;
ret = emit_consts( svga, 0, PIPE_SHADER_FRAGMENT );
if (ret)
return ret;
/* The internally generated fragment shader for xor blending
* doesn't have a 'result' struct. It should be fixed to avoid
* this special case, but work around it with a NULL check:
*/
if (result != NULL &&
key->num_unnormalized_coords)
{
unsigned offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
int i;
for (i = 0; i < key->num_textures; i++) {
if (key->tex[i].unnormalized) {
struct pipe_resource *tex = svga->curr.sampler_views[i]->texture;
float data[4];
data[0] = 1.0 / (float)tex->width0;
data[1] = 1.0 / (float)tex->height0;
data[2] = 1.0;
data[3] = 1.0;
ret = emit_const( svga,
PIPE_SHADER_FRAGMENT,
key->tex[i].width_height_idx + offset,
data );
if (ret)
return ret;
}
}
offset += key->num_unnormalized_coords;
}
return 0;
}
static enum pipe_error
emit_vs_consts(struct svga_context *svga, unsigned dirty)
{
const struct svga_shader_result *result = svga->state.hw_draw.vs;
const struct svga_vs_compile_key *key;
enum pipe_error ret = PIPE_OK;
unsigned offset;
/* SVGA_NEW_VS_RESULT
*/
if (result == NULL)
return PIPE_OK;
key = &result->key.vkey;
/* SVGA_NEW_VS_CONST_BUFFER
*/
ret = emit_consts( svga, PIPE_SHADER_VERTEX );
if (ret != PIPE_OK)
return ret;
/* offset = number of constants in the VS const buffer */
offset = result->shader->info.file_max[TGSI_FILE_CONSTANT] + 1;
/* SVGA_NEW_VS_PRESCALE
* Put the viewport pre-scale/translate values into the const buffer.
*/
if (key->need_prescale) {
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.scale );
if (ret != PIPE_OK)
return ret;
ret = emit_const( svga, PIPE_SHADER_VERTEX, offset++,
svga->state.hw_clear.prescale.translate );
if (ret != PIPE_OK)
return ret;
}
return PIPE_OK;
}