+/**
+ * Search the buffer pool for an empty/free buffer and return its index.
+ * Buffers are used for storing vertex data, state and commands which
+ * will be sent to the SPUs.
+ * If no empty buffers are available, wait for one.
+ * \return buffer index in [0, CELL_NUM_BUFFERS-1]
+ */
uint
cell_get_empty_buffer(struct cell_context *cell)
{
}
+/**
+ * Flush the current batch buffer to the SPUs.
+ * An empty buffer will be found and set as the new current batch buffer
+ * for subsequent commands/data.
+ */
void
cell_batch_flush(struct cell_context *cell)
{
}
+/**
+ * Return the number of bytes free in the current batch buffer.
+ */
uint
cell_batch_free_space(const struct cell_context *cell)
{
/**
- * Append data to current batch.
+ * Append data to the current batch buffer.
* \param data address of block of bytes to append
* \param bytes size of block of bytes
*/
#include "cell_state.h"
+/**
+ * Called via pipe->clear()
+ */
void
cell_clear_surface(struct pipe_context *pipe, struct pipe_surface *ps,
unsigned clearValue)
PIPE_BUFFER_USAGE_GPU_WRITE);
if (ps == cell->framebuffer.zsbuf) {
+ /* clear z/stencil buffer */
surfIndex = 1;
}
else {
+ /* clear color buffer */
surfIndex = 0;
}
+ /* Build a CLEAR command and place it in the current batch buffer */
{
struct cell_command_clear_surface *clr
= (struct cell_command_clear_surface *)
#include "rtasm/rtasm_ppc_spe.h"
#include "tgsi/tgsi_scan.h"
+
struct cell_vbuf_render;
+
+/**
+ * Cell vertex shader state, subclass of pipe_shader_state.
+ */
struct cell_vertex_shader_state
{
struct pipe_shader_state shader;
};
+/**
+ * Cell fragment shader state, subclass of pipe_shader_state.
+ */
struct cell_fragment_shader_state
{
struct pipe_shader_state shader;
};
-struct cell_blend_state {
+/**
+ * Cell blend state atom, subclass of pipe_blend_state.
+ */
+struct cell_blend_state
+{
struct pipe_blend_state base;
/**
};
-struct cell_depth_stencil_alpha_state {
- struct pipe_depth_stencil_alpha_state base;
+/**
+ * Cell depth/stencil/alpha state atom, subclass of
+ * pipe_depth_stencil_alpha_state.
+ */
+struct cell_depth_stencil_alpha_state
+{
+ struct pipe_depth_stencil_alpha_state base;
/**
* Generated code to perform alpha, stencil, and depth testing on the SPE
*/
struct spe_function code;
-
};
+/**
+ * Per-context state, subclass of pipe_context.
+ */
struct cell_context
{
struct pipe_context pipe;
#include "draw/draw_context.h"
+/**
+ * Called via pipe->flush()
+ */
void
cell_flush(struct pipe_context *pipe, unsigned flags,
struct pipe_fence_handle **fence)
}
-/** internal flush */
+/**
+ * Cell internal flush function. Send the current batch buffer to all SPUs.
+ * If flags & CELL_FLUSH_WAIT, do not return until the SPUs are idle.
+ * \param flags bitmask of flags CELL_FLUSH_WAIT, or zero
+ */
void
cell_flush_int(struct cell_context *cell, unsigned flags)
{
**************************************************************************/
+/**
+ * Utility/wrappers for communicating with the SPUs.
+ */
+
+
#include <pthread.h>
#include "cell_spu.h"
}
-static void *cell_thread_function(void *arg)
+/**
+ * Called by pthread_create() to spawn an SPU thread.
+ */
+static void *
+cell_thread_function(void *arg)
{
struct cell_init_info *init = (struct cell_init_info *) arg;
unsigned entry = SPE_DEFAULT_ENTRY;
/**
- * Create the SPU threads
+ * Create the SPU threads. This is done once during driver initialization.
+ * This involves setting the the "init" message which is sent to each SPU.
+ * The init message specifies an SPU id, total number of SPUs, location
+ * and number of batch buffers, etc.
*/
void
cell_start_spus(struct cell_context *cell)
static boolean one_time_init = FALSE;
uint i, j;
-
if (one_time_init) {
fprintf(stderr, "PPU: Multiple rendering contexts not yet supported "
"on Cell.\n");
/**
* Tell all the SPUs to stop/exit.
+ * This is done when the driver's exiting / cleaning up.
*/
void
cell_spu_exit(struct cell_context *cell)
#include "cell_state_emit.h"
-static int
-find_vs_output(const struct cell_vertex_shader_state *vs,
- uint semantic_name,
- uint semantic_index)
-{
- uint i;
- for (i = 0; i < vs->info.num_outputs; i++) {
- if (vs->info.output_semantic_name[i] == semantic_name &&
- vs->info.output_semantic_index[i] == semantic_index)
- return i;
- }
- return -1;
-}
-
-
/**
* Determine how to map vertex program outputs to fragment program inputs.
* Basically, this will be used when computing the triangle interpolation
static void
calculate_vertex_layout( struct cell_context *cell )
{
- const struct cell_vertex_shader_state *vs = cell->vs;
const struct cell_fragment_shader_state *fs = cell->fs;
const enum interp_mode colorInterp
= cell->rasterizer->flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
vinfo->num_attribs = 0;
/* we always want to emit vertex pos */
- src = find_vs_output(vs, TGSI_SEMANTIC_POSITION, 0);
+ src = draw_find_vs_output(cell->draw, TGSI_SEMANTIC_POSITION, 0);
assert(src >= 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_POS, src);
break;
case TGSI_SEMANTIC_COLOR:
- src = find_vs_output(vs, TGSI_SEMANTIC_COLOR,
- fs->info.input_semantic_index[i]);
+ src = draw_find_vs_output(cell->draw, TGSI_SEMANTIC_COLOR,
+ fs->info.input_semantic_index[i]);
assert(src >= 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src);
break;
case TGSI_SEMANTIC_FOG:
- src = find_vs_output(vs, TGSI_SEMANTIC_FOG, 0);
+ src = draw_find_vs_output(cell->draw, TGSI_SEMANTIC_FOG, 0);
#if 1
if (src < 0) /* XXX temp hack, try demos/fogcoord.c with this */
src = 0;
case TGSI_SEMANTIC_GENERIC:
/* this includes texcoords and varying vars */
- src = find_vs_output(vs, TGSI_SEMANTIC_GENERIC,
+ src = draw_find_vs_output(cell->draw, TGSI_SEMANTIC_GENERIC,
fs->info.input_semantic_index[i]);
assert(src >= 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
+/**
+ * Update derived state, send current state to SPUs prior to rendering.
+ */
void cell_update_derived( struct cell_context *cell )
{
if (cell->dirty & (CELL_NEW_RASTERIZER |
}
-
+/**
+ * For state marked as 'dirty', construct a state-update command block
+ * and insert it into the current batch buffer.
+ */
void
cell_emit_state(struct cell_context *cell)
{
blend.size = (char *) cell->blend->code.csr
- (char *) cell->blend->code.store;
blend.read_fb = TRUE;
- } else {
+ }
+ else {
blend.base = 0;
blend.size = 0;
blend.read_fb = FALSE;
if (cell->dirty & CELL_NEW_DEPTH_STENCIL) {
struct cell_command_depth_stencil_alpha_test dsat;
-
if (cell->depth_stencil != NULL) {
dsat.base = (intptr_t) cell->depth_stencil->code.store;
- (char *) cell->depth_stencil->code.store;
dsat.read_depth = TRUE;
dsat.read_stencil = FALSE;
- } else {
+ }
+ else {
dsat.base = 0;
dsat.size = 0;
dsat.read_depth = FALSE;
dsat.read_stencil = FALSE;
}
- emit_state_cmd(cell, CELL_CMD_STATE_DEPTH_STENCIL, &dsat,
- sizeof(dsat));
+ emit_state_cmd(cell, CELL_CMD_STATE_DEPTH_STENCIL, &dsat, sizeof(dsat));
}
if (cell->dirty & CELL_NEW_SAMPLER) {
info.immediates = (uintptr_t) draw->vs.machine.Imms;
info.num_immediates = draw->vs.machine.ImmLimit / 4;
- emit_state_cmd(cell, CELL_CMD_STATE_BIND_VS,
- & info, sizeof(info));
+ emit_state_cmd(cell, CELL_CMD_STATE_BIND_VS, &info, sizeof(info));
}
}
}
-
+/**
+ * Create fragment shader state.
+ * Called via pipe->create_fs_state()
+ */
static void *
cell_create_fs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
}
+/**
+ * Called via pipe->bind_fs_state()
+ */
static void
cell_bind_fs_state(struct pipe_context *pipe, void *fs)
{
}
+/**
+ * Called via pipe->delete_fs_state()
+ */
static void
cell_delete_fs_state(struct pipe_context *pipe, void *fs)
{
}
+/**
+ * Create vertex shader state.
+ * Called via pipe->create_vs_state()
+ */
static void *
cell_create_vs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
}
+/**
+ * Called via pipe->bind_vs_state()
+ */
static void
cell_bind_vs_state(struct pipe_context *pipe, void *vs)
{
}
+/**
+ * Called via pipe->delete_vs_state()
+ */
static void
cell_delete_vs_state(struct pipe_context *pipe, void *vs)
{
}
+/**
+ * Called via pipe->set_constant_buffer()
+ */
static void
cell_set_constant_buffer(struct pipe_context *pipe,
uint shader, uint index,
/*cell->pipe.texture_update = cell_texture_update;*/
}
+
void
cell_init_screen_texture_funcs(struct pipe_screen *screen)
{
**************************************************************************/
/**
+ * Vertex buffer code. The draw module transforms vertices to window
+ * coords, etc. and emits the vertices into buffer supplied by this module.
+ * When a vertex buffer is full, or we flush, we'll send the vertex data
+ * to the SPUs.
+ *
* Authors
* Brian Paul
*/
projects / mesa.git / commitdiff