*
**************************************************************************/
+/**
+ * The rast code is concerned with rasterization of command bins.
+ * Each screen tile has a bin associated with it. To render the
+ * scene we iterate over the tile bins and execute the commands
+ * in each bin.
+ * We'll do that with multiple threads...
+ */
+
+
#ifndef LP_RAST_H
#define LP_RAST_H
#include "pipe/p_compiler.h"
#include "lp_jit.h"
-/* Initially create and program a single rasterizer directly. Later
- * will want multiple of these, one or two per core. At that stage
- * will probably pass command buffers into the rasterizers rather than
- * individual function calls like this.
- */
+
struct lp_rasterizer;
-struct pipe_screen;
+struct lp_scene;
+struct lp_fence;
+struct cmd_bin;
+/** For sub-pixel positioning */
#define FIXED_ORDER 4
#define FIXED_ONE (1<<FIXED_ORDER)
+struct lp_rasterizer_task;
+
+
+/**
+ * Rasterization state.
+ * Objects of this type are put into the shared data bin and pointed
+ * to by commands in the per-tile bins.
+ */
struct lp_rast_state {
- /* State for the shader:
+ /* State for the shader. This also contains state which feeds into
+ * the fragment shader, such as blend color and alpha ref value.
*/
struct lp_jit_context jit_context;
/* The shader itself. Probably we also need to pass a pointer to
* the tile color/z/stencil data somehow:
- */
- lp_jit_frag_func jit_function;
+ * jit_function[0] skips the triangle in/out test code
+ * jit_function[1] does triangle in/out testing
+ */
+ lp_jit_frag_func jit_function[2];
+ boolean opaque;
};
-/* Coefficients necessary to run the shader at a given location:
+
+/**
+ * Coefficients necessary to run the shader at a given location.
+ * First coefficient is position.
+ * These pointers point into the bin data buffer.
*/
struct lp_rast_shader_inputs {
+ float facing; /** Positive for front-facing, negative for back-facing */
- /* Current rasterizer state:
- */
- const struct lp_rast_state *state;
+ float (*a0)[4];
+ float (*dadx)[4];
+ float (*dady)[4];
- /* Attribute interpolation:
- *
- * First coefficient is position.
- *
- * FIXME: reduce memory waste!
- */
- float a0[1 + PIPE_MAX_SHADER_INPUTS][4];
- float dadx[1 + PIPE_MAX_SHADER_INPUTS][4];
- float dady[1 + PIPE_MAX_SHADER_INPUTS][4];
+ /* edge/step info for 3 edges and 4x4 block of pixels */
+ PIPE_ALIGN_VAR(16) int step[3][16];
};
* Rasterization information for a triangle known to be in this bin,
* plus inputs to run the shader:
* These fields are tile- and bin-independent.
- * Objects of this type are put into the setup_context::data buffer.
+ * Objects of this type are put into the lp_setup_context::data buffer.
*/
struct lp_rast_triangle {
- /* bounding box of tri (in pixels) */
- int minx;
- int maxx;
- int miny;
- int maxy;
+#ifdef DEBUG
+ float v[3][2];
+#endif
/* one-pixel sized trivial accept offsets for each plane */
int ei1;
int dx31;
/* edge function values at minx,miny ?? */
- int c1;
- int c2;
- int c3;
-
- int step[3][16];
-
- /* XXX: this is only used inside lp_setup_tri.c, don't really
- * need it here:
- */
- float oneoverarea;
+ int c1, c2, c3;
/* inputs for the shader */
- struct lp_rast_shader_inputs inputs;
+ PIPE_ALIGN_VAR(16) struct lp_rast_shader_inputs inputs;
};
-struct lp_rasterizer *lp_rast_create( struct pipe_screen *screen );
+struct lp_rasterizer *
+lp_rast_create( void );
-boolean lp_rast_begin( struct lp_rasterizer *rast,
- struct pipe_surface *cbuf,
- struct pipe_surface *zsbuf,
- boolean write_color,
- boolean write_zstencil,
- unsigned width,
- unsigned height );
+void
+lp_rast_destroy( struct lp_rasterizer * );
-void lp_rast_end( struct lp_rasterizer * );
+unsigned
+lp_rast_get_num_threads( struct lp_rasterizer * );
-/* Begining of each tile:
- */
-void lp_rast_start_tile( struct lp_rasterizer *,
- unsigned x,
- unsigned y );
+void
+lp_rast_queue_scene( struct lp_rasterizer *rast,
+ struct lp_scene *scene );
+void
+lp_rast_finish( struct lp_rasterizer *rast );
union lp_rast_cmd_arg {
const struct lp_rast_state *set_state;
uint8_t clear_color[4];
unsigned clear_zstencil;
+ struct lp_fence *fence;
};
+
/* Cast wrappers. Hopefully these compile to noops!
*/
-static INLINE const union lp_rast_cmd_arg
+static INLINE union lp_rast_cmd_arg
lp_rast_arg_inputs( const struct lp_rast_shader_inputs *shade_tile )
{
union lp_rast_cmd_arg arg;
return arg;
}
-static INLINE const union lp_rast_cmd_arg
+static INLINE union lp_rast_cmd_arg
lp_rast_arg_triangle( const struct lp_rast_triangle *triangle )
{
union lp_rast_cmd_arg arg;
return arg;
}
-static INLINE const union lp_rast_cmd_arg
+static INLINE union lp_rast_cmd_arg
lp_rast_arg_state( const struct lp_rast_state *state )
{
union lp_rast_cmd_arg arg;
return arg;
}
-static INLINE const union lp_rast_cmd_arg
-lp_rast_arg_null( void )
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_fence( struct lp_fence *fence )
{
union lp_rast_cmd_arg arg;
- arg.set_state = NULL;
+ arg.fence = fence;
return arg;
}
+static INLINE union lp_rast_cmd_arg
+lp_rast_arg_null( void )
+{
+ union lp_rast_cmd_arg arg;
+ arg.set_state = NULL;
+ return arg;
+}
-/* Binnable Commands:
+/**
+ * Binnable Commands.
+ * These get put into bins by the setup code and are called when
+ * the bins are executed.
*/
-void lp_rast_clear_color( struct lp_rasterizer *,
+
+void lp_rast_clear_color( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-void lp_rast_clear_zstencil( struct lp_rasterizer *,
+void lp_rast_clear_zstencil( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-void lp_rast_load_color( struct lp_rasterizer *,
+void lp_rast_load_color( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-void lp_rast_load_zstencil( struct lp_rasterizer *,
- const union lp_rast_cmd_arg );
-
-void lp_rast_set_state( struct lp_rasterizer *,
+void lp_rast_set_state( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-void lp_rast_triangle( struct lp_rasterizer *,
+void lp_rast_triangle( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-void lp_rast_shade_tile( struct lp_rasterizer *,
+void lp_rast_shade_tile( struct lp_rasterizer_task *,
const union lp_rast_cmd_arg );
-
-/* End of tile:
- */
-
-void lp_rast_end_tile( struct lp_rasterizer *rast );
-
-/* Shutdown:
- */
-void lp_rast_destroy( struct lp_rasterizer * );
-
+void lp_rast_fence( struct lp_rasterizer_task *,
+ const union lp_rast_cmd_arg );
#endif
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