*
**************************************************************************/
+/**
+ * Execute fragment shader using the TGSI interpreter.
+ */
#include "sp_context.h"
#include "sp_state.h"
#include "sp_fs.h"
-#include "sp_headers.h"
-
+#include "sp_quad.h"
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_memory.h"
-#include "pipe/p_inlines.h"
#include "tgsi/tgsi_exec.h"
#include "tgsi/tgsi_parse.h"
+
+/**
+ * Subclass of sp_fragment_shader
+ */
struct sp_exec_fragment_shader
{
struct sp_fragment_shader base;
+ /* No other members for now */
};
}
+static void
+exec_prepare( const struct sp_fragment_shader *base,
+ struct tgsi_exec_machine *machine,
+ struct tgsi_sampler **samplers )
+{
+ /*
+ * Bind tokens/shader to the interpreter's machine state.
+ * Avoid redundant binding.
+ */
+ if (machine->Tokens != base->shader.tokens) {
+ tgsi_exec_machine_bind_shader( machine,
+ base->shader.tokens,
+ PIPE_MAX_SAMPLERS,
+ samplers );
+ }
+}
+
+
+
/**
* Compute quad X,Y,Z,W for the four fragments in a quad.
*
* This should really be part of the compiled shader.
*/
-void
-sp_setup_pos_vector(const struct tgsi_interp_coef *coef,
- float x, float y,
- struct tgsi_exec_vector *quadpos)
+static void
+setup_pos_vector(const struct tgsi_interp_coef *coef,
+ float x, float y,
+ struct tgsi_exec_vector *quadpos)
{
uint chan;
/* do X */
}
-static void
-exec_prepare( const struct sp_fragment_shader *base,
- struct tgsi_exec_machine *machine,
- struct tgsi_sampler **samplers )
-{
- /*
- * Bind tokens/shader to the interpreter's machine state.
- * Avoid redundant binding.
- */
- if (machine->Tokens != base->shader.tokens) {
- tgsi_exec_machine_bind_shader( machine,
- base->shader.tokens,
- PIPE_MAX_SAMPLERS,
- samplers );
- }
-}
-
-
-
-
/* TODO: hide the machine struct in here somewhere, remove from this
* interface:
*/
struct tgsi_exec_machine *machine,
struct quad_header *quad )
{
-
/* Compute X, Y, Z, W vals for this quad */
- sp_setup_pos_vector(quad->posCoef,
- (float)quad->input.x0, (float)quad->input.y0,
- &machine->QuadPos);
+ setup_pos_vector(quad->posCoef,
+ (float)quad->input.x0, (float)quad->input.y0,
+ &machine->QuadPos);
- return tgsi_exec_machine_run( machine );
-}
+ quad->inout.mask &= tgsi_exec_machine_run( machine );
+ if (quad->inout.mask == 0)
+ return FALSE;
+
+ /* store outputs */
+ {
+ const ubyte *sem_name = base->info.output_semantic_name;
+ const ubyte *sem_index = base->info.output_semantic_index;
+ const uint n = base->info.num_outputs;
+ uint i;
+ for (i = 0; i < n; i++) {
+ switch (sem_name[i]) {
+ case TGSI_SEMANTIC_COLOR:
+ {
+ uint cbuf = sem_index[i];
+ memcpy(quad->output.color[cbuf],
+ &machine->Outputs[i].xyzw[0].f[0],
+ sizeof(quad->output.color[0]) );
+ }
+ break;
+ case TGSI_SEMANTIC_POSITION:
+ {
+ uint j;
+ for (j = 0; j < 4; j++) {
+ quad->output.depth[j] = machine->Outputs[0].xyzw[2].f[j];
+ }
+ }
+ break;
+ }
+ }
+ }
+ return TRUE;
+}
static void
}
-
-
-
struct sp_fragment_shader *
softpipe_create_fs_exec(struct softpipe_context *softpipe,
const struct pipe_shader_state *templ)
return &shader->base;
}
-