From: Ben Skeggs Date: Thu, 25 Jan 2007 02:40:51 +0000 (+1100) Subject: nouveau: add result scaling to shader backend, use it in RSQ emul for NV40. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=86996dfe32fccd5777dd0e410b5dbe964fb206d1;p=mesa.git nouveau: add result scaling to shader backend, use it in RSQ emul for NV40. --- diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.c b/src/mesa/drivers/dri/nouveau/nouveau_shader.c index f911347d624..cdb79fca1e6 100644 --- a/src/mesa/drivers/dri/nouveau/nouveau_shader.c +++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.c @@ -179,7 +179,7 @@ nvsBuildTextShader(GLcontext *ctx, GLenum target, const char *text) strlen(text), &nvs->mesa.vp); } else if (target == GL_FRAGMENT_PROGRAM_ARB) { - _mesa_init_fragment_program(ctx, &nvs->mesa.fp, GL_VERTEX_PROGRAM_ARB, 0); + _mesa_init_fragment_program(ctx, &nvs->mesa.fp, GL_FRAGMENT_PROGRAM_ARB, 0); _mesa_parse_arb_fragment_program(ctx, GL_FRAGMENT_PROGRAM_ARB, text, diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.h b/src/mesa/drivers/dri/nouveau/nouveau_shader.h index 8b4be9dfe7c..7329ccd9ead 100644 --- a/src/mesa/drivers/dri/nouveau/nouveau_shader.h +++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.h @@ -194,6 +194,16 @@ typedef enum { NVS_TEX_TARGET_UNKNOWN = 0 } nvsTexTarget; +typedef enum { + NVS_SCALE_1X = 0, + NVS_SCALE_2X = 1, + NVS_SCALE_4X = 2, + NVS_SCALE_8X = 3, + NVS_SCALE_INV_2X = 5, + NVS_SCALE_INV_4X = 6, + NVS_SCALE_INV_8X = 7, +} nvsScale; + /* Arith/TEX instructions */ typedef struct nvs_instruction { nvsFragmentHeader header; @@ -203,6 +213,7 @@ typedef struct nvs_instruction { nvsRegister dest; unsigned int mask; + nvsScale dest_scale; nvsRegister src[3]; @@ -307,6 +318,7 @@ struct _nvsFunc { void (*InitInstruction) (nvsFunc *); int (*SupportsOpcode) (nvsFunc *, nvsOpcode); + int (*SupportsResultScale) (nvsFunc *, nvsScale); void (*SetOpcode) (nvsFunc *, unsigned int opcode, int slot); void (*SetCCUpdate) (nvsFunc *); @@ -314,6 +326,7 @@ struct _nvsFunc { nvsSwzComp *swizzle); void (*SetResult) (nvsFunc *, nvsRegister *, unsigned int mask, int slot); + void (*SetResultScale) (nvsFunc *, nvsScale); void (*SetSource) (nvsFunc *, nvsRegister *, int pos); void (*SetTexImageUnit) (nvsFunc *, int unit); void (*SetSaturate) (nvsFunc *); diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c b/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c index 28c6ad803b1..3bcc2ba755c 100644 --- a/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c +++ b/src/mesa/drivers/dri/nouveau/nouveau_shader_0.c @@ -402,6 +402,7 @@ pass0_emit(nouveauShader *nvs, nvsFragmentHeader *parent, int fpos, sif->saturate = saturate; sif->dest = dst; sif->mask = mask; + sif->dest_scale = NVS_SCALE_1X; sif->src[0] = src0; sif->src[1] = src1; sif->src[2] = src2; @@ -667,25 +668,13 @@ pass0_emulate_instruction(nouveauShader *nvs, } break; case OPCODE_RSQ: - if (rec->const_half.file != NVS_FILE_CONST) { - GLfloat const_half[4] = { 0.5, 0.0, 0.0, 0.0 }; - pass0_make_reg(nvs, &rec->const_half, NVS_FILE_CONST, - _mesa_add_unnamed_constant( - nvs->mesa.vp.Base.Parameters, - const_half, 4)); - COPY_4V(nvs->params[rec->const_half.index].val, - const_half); - } pass0_make_reg(nvs, &temp, NVS_FILE_TEMP, -1); ARITHu(NVS_OP_LG2, temp, SMASK_X, 0, nvsAbs(nvsSwizzle(src[0], X, X, X, X)), nvr_unused, nvr_unused); - ARITHu(NVS_OP_MUL, temp, SMASK_X, 0, - nvsSwizzle(temp, X, X, X, X), - nvsNegate(rec->const_half), - nvr_unused); + nvsinst->dest_scale = NVS_SCALE_INV_2X; ARITH (NVS_OP_EX2, dest, mask, sat, - nvsSwizzle(temp, X, X, X, X), + nvsNegate(nvsSwizzle(temp, X, X, X, X)), nvr_unused, nvr_unused); break; case OPCODE_SCS: diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c b/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c index c106fd2d949..b043f877e42 100644 --- a/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c +++ b/src/mesa/drivers/dri/nouveau/nouveau_shader_2.c @@ -135,6 +135,10 @@ pass2_add_instruction(nvsPtr nvs, nvsInstruction *inst, reg = pass2_mangle_reg(nvs, inst, inst->dest); shader->SetResult(shader, ®, inst->mask, slot); + + if (inst->dest_scale != NVS_SCALE_1X) { + shader->SetResultScale(shader, inst->dest_scale); + } } static int diff --git a/src/mesa/drivers/dri/nouveau/nv40_fragprog.c b/src/mesa/drivers/dri/nouveau/nv40_fragprog.c index 8bca6ae9383..3e4ae0496e4 100644 --- a/src/mesa/drivers/dri/nouveau/nv40_fragprog.c +++ b/src/mesa/drivers/dri/nouveau/nv40_fragprog.c @@ -11,6 +11,30 @@ struct _op_xlat NVFP_TX_BOP[64]; * - These extend the NV30 routines, which are almost identical. NV40 * just has branching hacked into the instruction set. */ +static int +NV40FPSupportsResultScale(nvsFunc *shader, nvsScale scale) +{ + switch (scale) { + case NVS_SCALE_1X: + case NVS_SCALE_2X: + case NVS_SCALE_4X: + case NVS_SCALE_8X: + case NVS_SCALE_INV_2X: + case NVS_SCALE_INV_4X: + case NVS_SCALE_INV_8X: + return 1; + default: + return 0; + } +} + +static void +NV40FPSetResultScale(nvsFunc *shader, nvsScale scale) +{ + shader->inst[2] &= ~NV40_FP_OP_DST_SCALE_MASK; + shader->inst[2] |= ((unsigned int)scale << NV40_FP_OP_DST_SCALE_SHIFT); +} + static void NV40FPSetBranchTarget(nvsFunc *shader, int addr) { @@ -179,6 +203,9 @@ NV40FPInitShaderFuncs(nvsFunc * shader) MOD_OPCODE(NVFP_TX_BOP, NV40_FP_OP_BRA_OPCODE_REP , NVS_OP_REP , -1, -1, -1); MOD_OPCODE(NVFP_TX_BOP, NV40_FP_OP_BRA_OPCODE_RET , NVS_OP_RET , -1, -1, -1); + shader->SupportsResultScale = NV40FPSupportsResultScale; + shader->SetResultScale = NV40FPSetResultScale; + /* fragment.facing */ shader->GetSourceID = NV40FPGetSourceID; diff --git a/src/mesa/drivers/dri/nouveau/nv40_shader.h b/src/mesa/drivers/dri/nouveau/nv40_shader.h index 2a2b5639b6c..584f4c23e08 100644 --- a/src/mesa/drivers/dri/nouveau/nv40_shader.h +++ b/src/mesa/drivers/dri/nouveau/nv40_shader.h @@ -399,8 +399,8 @@ /* high order bits of SRC1 */ #define NV40_FP_OP_OPCODE_IS_BRANCH (1<<31) -#define NV40_FP_OP_SRC_SCALE_SHIFT 28 -#define NV40_FP_OP_SRC_SCALE_MASK (3 << 28) +#define NV40_FP_OP_DST_SCALE_SHIFT 28 +#define NV40_FP_OP_DST_SCALE_MASK (3 << 28) /* SRC1 LOOP */ #define NV40_FP_OP_LOOP_INCR_SHIFT 19