From: Brian Paul Date: Mon, 27 Apr 2009 15:51:46 +0000 (-0600) Subject: i965: only upload constant buffer data when we actually need the const buffer X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dc9705d12d162ba6d087eb762e315de9f97bc456;p=mesa.git i965: only upload constant buffer data when we actually need the const buffer Make the use_const_buffer field per-program and only call the code which updates the constant buffer's data if the flag is set. This should undo the perf regression from 20f3497e4b6756e330f7b3f54e8acaa1d6c92052 --- diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h index a0b3b06309f..aef2ff5f86f 100644 --- a/src/mesa/drivers/dri/i965/brw_context.h +++ b/src/mesa/drivers/dri/i965/brw_context.h @@ -161,6 +161,7 @@ struct brw_vertex_program { struct gl_vertex_program program; GLuint id; dri_bo *const_buffer; /** Program constant buffer/surface */ + GLboolean use_const_buffer; }; @@ -171,6 +172,7 @@ struct brw_fragment_program { GLboolean isGLSL; /**< really, any IF/LOOP/CONT/BREAK instructions */ dri_bo *const_buffer; /** Program constant buffer/surface */ + GLboolean use_const_buffer; }; diff --git a/src/mesa/drivers/dri/i965/brw_curbe.c b/src/mesa/drivers/dri/i965/brw_curbe.c index 2d157930788..9197fede2d8 100644 --- a/src/mesa/drivers/dri/i965/brw_curbe.c +++ b/src/mesa/drivers/dri/i965/brw_curbe.c @@ -383,7 +383,8 @@ update_vertex_constant_buffer(struct brw_context *brw) printf("update VS constants in buffer %p\n", vp->const_buffer); printf("program %u\n", vp->program.Base.Id); } - update_constant_buffer(brw, vp->program.Base.Parameters, vp->const_buffer); + if (vp->use_const_buffer) + update_constant_buffer(brw, vp->program.Base.Parameters, vp->const_buffer); } @@ -393,7 +394,8 @@ update_fragment_constant_buffer(struct brw_context *brw) { struct brw_fragment_program *fp = (struct brw_fragment_program *) brw->fragment_program; - update_constant_buffer(brw, fp->program.Base.Parameters, fp->const_buffer); + if (fp->use_const_buffer) + update_constant_buffer(brw, fp->program.Base.Parameters, fp->const_buffer); } diff --git a/src/mesa/drivers/dri/i965/brw_vs.h b/src/mesa/drivers/dri/i965/brw_vs.h index d20cf78b8af..1e4f66091e3 100644 --- a/src/mesa/drivers/dri/i965/brw_vs.h +++ b/src/mesa/drivers/dri/i965/brw_vs.h @@ -75,8 +75,6 @@ struct brw_vs_compile { struct brw_reg userplane[6]; - /** using a real constant buffer? */ - GLboolean use_const_buffer; /** we may need up to 3 constants per instruction (if use_const_buffer) */ struct { GLint index; diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index 524f1211cee..b69616d6e52 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -71,10 +71,10 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) #if 0 if (c->vp->program.Base.Parameters->NumParameters >= 6) - c->use_const_buffer = 1; + c->vp->use_const_buffer = 1; else #endif - c->use_const_buffer = GL_FALSE; + c->vp->use_const_buffer = GL_FALSE; /*printf("use_const_buffer = %d\n", c->use_const_buffer);*/ /* r0 -- reserved as usual @@ -96,7 +96,7 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) /* Vertex program parameters from curbe: */ - if (c->use_const_buffer) { + if (c->vp->use_const_buffer) { /* get constants from a real constant buffer */ c->prog_data.curb_read_length = 0; c->prog_data.nr_params = 4; /* XXX 0 causes a bug elsewhere... */ @@ -172,7 +172,7 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) reg++; } - if (c->use_const_buffer) { + if (c->vp->use_const_buffer) { for (i = 0; i < 3; i++) { c->current_const[i].index = -1; c->current_const[i].reg = brw_vec8_grf(reg, 0); @@ -869,7 +869,7 @@ get_src_reg( struct brw_vs_compile *c, case PROGRAM_STATE_VAR: case PROGRAM_CONSTANT: case PROGRAM_UNIFORM: - if (c->use_const_buffer) { + if (c->vp->use_const_buffer) { return get_constant(c, inst, argIndex); } else if (relAddr) { diff --git a/src/mesa/drivers/dri/i965/brw_wm.h b/src/mesa/drivers/dri/i965/brw_wm.h index d0ab3bdc65f..f0d31fc1ddc 100644 --- a/src/mesa/drivers/dri/i965/brw_wm.h +++ b/src/mesa/drivers/dri/i965/brw_wm.h @@ -254,8 +254,6 @@ struct brw_wm_compile { GLuint tmp_max; GLuint subroutines[BRW_WM_MAX_SUBROUTINE]; - /** using a real constant buffer? */ - GLboolean use_const_buffer; /** we may need up to 3 constants per instruction (if use_const_buffer) */ struct { GLint index; diff --git a/src/mesa/drivers/dri/i965/brw_wm_glsl.c b/src/mesa/drivers/dri/i965/brw_wm_glsl.c index 22e17622c6d..117460842a3 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_glsl.c +++ b/src/mesa/drivers/dri/i965/brw_wm_glsl.c @@ -194,9 +194,9 @@ static void prealloc_reg(struct brw_wm_compile *c) const int nr_params = c->fp->program.Base.Parameters->NumParameters; /* use a real constant buffer, or just use a section of the GRF? */ - c->use_const_buffer = GL_FALSE; /* (nr_params > 8);*/ + c->fp->use_const_buffer = GL_FALSE; /* (nr_params > 8);*/ - if (c->use_const_buffer) { + if (c->fp->use_const_buffer) { /* We'll use a real constant buffer and fetch constants from * it with a dataport read message. */ @@ -253,14 +253,14 @@ static void prealloc_reg(struct brw_wm_compile *c) * They'll be found in these registers. * XXX alloc these on demand! */ - if (c->use_const_buffer) { + if (c->fp->use_const_buffer) { for (i = 0; i < 3; i++) { c->current_const[i].index = -1; c->current_const[i].reg = alloc_tmp(c); } } #if 0 - printf("USE CONST BUFFER? %d\n", c->use_const_buffer); + printf("USE CONST BUFFER? %d\n", c->fp->use_const_buffer); printf("AFTER PRE_ALLOC, reg_index = %d\n", c->reg_index); #endif } @@ -368,7 +368,7 @@ static struct brw_reg get_src_reg(struct brw_wm_compile *c, const GLuint nr = 1; const GLuint component = GET_SWZ(src->Swizzle, channel); - if (c->use_const_buffer && + if (c->fp->use_const_buffer && (src->File == PROGRAM_STATE_VAR || src->File == PROGRAM_CONSTANT || src->File == PROGRAM_UNIFORM)) { @@ -2609,7 +2609,7 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c) #endif /* fetch any constants that this instruction needs */ - if (c->use_const_buffer) + if (c->fp->use_const_buffer) fetch_constants(c, inst); if (inst->CondUpdate)