diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm.c')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm.c | 115 |
1 files changed, 69 insertions, 46 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c index ea708a0681..1645ca0b70 100644 --- a/src/mesa/drivers/dri/i965/brw_wm.c +++ b/src/mesa/drivers/dri/i965/brw_wm.c @@ -80,6 +80,53 @@ GLuint brw_wm_is_scalar_result( GLuint opcode ) } +/** + * Do GPU code generation for non-GLSL shader. non-GLSL shaders have + * no flow control instructions so we can more readily do SSA-style + * optimizations. + */ +static void +brw_wm_non_glsl_emit(struct brw_context *brw, struct brw_wm_compile *c) +{ + /* Augment fragment program. Add instructions for pre- and + * post-fragment-program tasks such as interpolation and fogging. + */ + brw_wm_pass_fp(c); + + /* Translate to intermediate representation. Build register usage + * chains. + */ + brw_wm_pass0(c); + + /* Dead code removal. + */ + brw_wm_pass1(c); + + /* Register allocation. + */ + c->grf_limit = BRW_WM_MAX_GRF / 2; + + brw_wm_pass2(c); + + c->prog_data.total_grf = c->max_wm_grf; + if (c->last_scratch) { + c->prog_data.total_scratch = c->last_scratch + 0x40; + } + else { + c->prog_data.total_scratch = 0; + } + + /* Emit GEN4 code. + */ + brw_wm_emit(c); +} + + +/** + * All Mesa program -> GPU code generation goes through this function. + * Depending on the instructions used (i.e. flow control instructions) + * we'll use one of two code generators. + */ static void do_wm_prog( struct brw_context *brw, struct brw_fragment_program *fp, struct brw_wm_prog_key *key) @@ -90,52 +137,32 @@ static void do_wm_prog( struct brw_context *brw, c = brw->wm.compile_data; if (c == NULL) { - brw->wm.compile_data = calloc(1, sizeof(*brw->wm.compile_data)); - c = brw->wm.compile_data; + brw->wm.compile_data = calloc(1, sizeof(*brw->wm.compile_data)); + c = brw->wm.compile_data; } else { - memset(c, 0, sizeof(*brw->wm.compile_data)); + memset(c, 0, sizeof(*brw->wm.compile_data)); } memcpy(&c->key, key, sizeof(*key)); c->fp = fp; c->env_param = brw->intel.ctx.FragmentProgram.Parameters; - brw_init_compile(brw, &c->func); - if (brw_wm_is_glsl(&c->fp->program)) { - brw_wm_glsl_emit(brw, c); - } else { - /* Augment fragment program. Add instructions for pre- and - * post-fragment-program tasks such as interpolation and fogging. - */ - brw_wm_pass_fp(c); - - /* Translate to intermediate representation. Build register usage - * chains. - */ - brw_wm_pass0(c); - - /* Dead code removal. - */ - brw_wm_pass1(c); - - /* Register allocation. - */ - c->grf_limit = BRW_WM_MAX_GRF/2; - - brw_wm_pass2(c); - - c->prog_data.total_grf = c->max_wm_grf; - if (c->last_scratch) { - c->prog_data.total_scratch = - c->last_scratch + 0x40; - } else { - c->prog_data.total_scratch = 0; - } - - /* Emit GEN4 code. - */ - brw_wm_emit(c); + brw_init_compile(brw, &c->func); + + /* temporary sanity check assertion */ + ASSERT(fp->isGLSL == brw_wm_is_glsl(&c->fp->program)); + + /* + * Shader which use GLSL features such as flow control are handled + * differently from "simple" shaders. + */ + if (fp->isGLSL) { + brw_wm_glsl_emit(brw, c); } + else { + brw_wm_non_glsl_emit(brw, c); + } + if (INTEL_DEBUG & DEBUG_WM) fprintf(stderr, "\n"); @@ -159,7 +186,7 @@ static void brw_wm_populate_key( struct brw_context *brw, { GLcontext *ctx = &brw->intel.ctx; /* BRW_NEW_FRAGMENT_PROGRAM */ - struct brw_fragment_program *fp = + const struct brw_fragment_program *fp = (struct brw_fragment_program *)brw->fragment_program; GLuint lookup = 0; GLuint line_aa; @@ -174,7 +201,7 @@ static void brw_wm_populate_key( struct brw_context *brw, ctx->Color.AlphaEnabled) lookup |= IZ_PS_KILL_ALPHATEST_BIT; - if (fp->program.Base.OutputsWritten & (1<<FRAG_RESULT_DEPR)) + if (fp->program.Base.OutputsWritten & (1<<FRAG_RESULT_DEPTH)) lookup |= IZ_PS_COMPUTES_DEPTH_BIT; /* _NEW_DEPTH */ @@ -186,7 +213,7 @@ static void brw_wm_populate_key( struct brw_context *brw, lookup |= IZ_DEPTH_WRITE_ENABLE_BIT; /* _NEW_STENCIL */ - if (ctx->Stencil.Enabled) { + if (ctx->Stencil._Enabled) { lookup |= IZ_STENCIL_TEST_ENABLE_BIT; if (ctx->Stencil.WriteMask[0] || @@ -278,10 +305,8 @@ static void brw_wm_populate_key( struct brw_context *brw, key->drawable_height = brw->intel.driDrawable->h; } - /* Extra info: - */ + /* The unique fragment program ID */ key->program_string_id = fp->id; - } @@ -305,8 +330,6 @@ static void brw_prepare_wm_prog(struct brw_context *brw) } -/* See brw_wm.c: - */ const struct brw_tracked_state brw_wm_prog = { .dirty = { .mesa = (_NEW_COLOR | |