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i965: increase the brw eu instruction store size dynamically

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Here is the final patch to enable dynamic eu instruction store size:
increase the brw eu instruction store size dynamically instead of just
allocating it statically with a constant limit. This would fix something
that 'GL_MAX_PROGRAM_INSTRUCTIONS_ARB was 16384 while the driver would
limit it to 10000'.

v2: comments from ken, do not hardcode the eu limit to (1024 * 1024)

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Yuanhan Liu 2011-12-21 15:38:44 +08:00
parent 8d1b378939
commit 3aa3c3f758
3 changed files with 18 additions and 3 deletions
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7
src/mesa/drivers/dri/i965/brw_eu.c
View file

@ -174,6 +174,13 @@ void
brw_init_compile(struct brw_context *brw, struct brw_compile *p, void *mem_ctx)
{
p->brw = brw;
/*
* Set the initial instruction store array size to 1024, if found that
* isn't enough, then it will double the store size at brw_next_insn()
* until out of memory.
*/
p->store_size = 1024;
p->store = rzalloc_array(mem_ctx, struct brw_instruction, p->store_size);
p->nr_insn = 0;
p->current = p->stack;
p->compressed = false;

4
src/mesa/drivers/dri/i965/brw_eu.h
View file

@ -101,10 +101,10 @@ struct brw_glsl_call;
#define BRW_EU_MAX_INSN_STACK 5
#define BRW_EU_MAX_INSN 10000
struct brw_compile {
struct brw_instruction store[BRW_EU_MAX_INSN];
struct brw_instruction *store;
int store_size;
GLuint nr_insn;
void *mem_ctx;

10
src/mesa/drivers/dri/i965/brw_eu_emit.c
View file

@ -691,7 +691,15 @@ brw_next_insn(struct brw_compile *p, GLuint opcode)
{
struct brw_instruction *insn;
assert(p->nr_insn + 1 < BRW_EU_MAX_INSN);
if (p->nr_insn + 1 > p->store_size) {
if (0)
printf("incresing the store size to %d\n", p->store_size << 1);
p->store_size <<= 1;
p->store = reralloc(p->mem_ctx, p->store,
struct brw_instruction, p->store_size);
if (!p->store)
assert(!"realloc eu store memeory failed");
}
insn = &p->store[p->nr_insn++];
memcpy(insn, p->current, sizeof(*insn));