From: Eric Anholt Date: Fri, 4 Jul 2014 16:38:44 +0000 (-0700) Subject: vc4: Add WIP support for varyings. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c29392751180e21a2857cade8d0b4902cbe9d001;p=mesa.git vc4: Add WIP support for varyings. It doesn't do all the interpolation yet, but more tests can run now. v2: Rebase on helpers. --- diff --git a/src/gallium/drivers/vc4/vc4_context.h b/src/gallium/drivers/vc4/vc4_context.h index 8258d3046c0..f36b96b0c25 100644 --- a/src/gallium/drivers/vc4/vc4_context.h +++ b/src/gallium/drivers/vc4/vc4_context.h @@ -80,6 +80,7 @@ struct vc4_compiled_shader { struct vc4_shader_uniform_info uniforms[2]; uint32_t coord_shader_offset; + uint8_t num_inputs; }; struct vc4_program_stateobj { diff --git a/src/gallium/drivers/vc4/vc4_draw.c b/src/gallium/drivers/vc4/vc4_draw.c index 10b5deb560e..d315f40ed20 100644 --- a/src/gallium/drivers/vc4/vc4_draw.c +++ b/src/gallium/drivers/vc4/vc4_draw.c @@ -177,7 +177,7 @@ vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info) cl_start_shader_reloc(&vc4->shader_rec, 7); cl_u16(&vc4->shader_rec, VC4_SHADER_FLAG_ENABLE_CLIPPING); cl_u8(&vc4->shader_rec, 0); /* fs num uniforms (unused) */ - cl_u8(&vc4->shader_rec, 0); /* fs num varyings */ + cl_u8(&vc4->shader_rec, vc4->prog.fs->num_inputs); cl_reloc(vc4, &vc4->shader_rec, vc4->prog.fs->bo, 0); cl_reloc(vc4, &vc4->shader_rec, fs_ubo, fs_ubo_offset); diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index 0b3cfb400af..12d188185cd 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -53,6 +53,8 @@ struct tgsi_to_qir { uint32_t *uniform_data; enum quniform_contents *uniform_contents; uint32_t num_uniforms; + uint32_t num_inputs; + uint32_t num_outputs; }; struct vc4_key { @@ -184,6 +186,8 @@ update_dst(struct tgsi_to_qir *trans, struct tgsi_full_instruction *tgsi_inst, break; case TGSI_FILE_OUTPUT: trans->outputs[tgsi_dst->Index * 4 + i] = val; + trans->num_outputs = MAX2(trans->num_outputs, + tgsi_dst->Index * 4 + i + 1); break; default: fprintf(stderr, "unknown dst file %d\n", tgsi_dst->File); @@ -265,6 +269,38 @@ tgsi_to_qir_abs(struct tgsi_to_qir *trans, return qir_FMAXABS(c, arg, arg); } +static void +emit_tgsi_declaration(struct tgsi_to_qir *trans, + struct tgsi_full_declaration *decl) +{ + struct qcompile *c = trans->c; + + switch (decl->Declaration.File) { + case TGSI_FILE_INPUT: + if (c->stage == QSTAGE_FRAG) { + for (int index = decl->Range.First; + index <= decl->Range.Last; + index++) { + for (int i = 0; i < 4; i++) { + struct qreg vary = { + QFILE_VARY, + index * 4 + i + }; + + /* XXX: multiply by W */ + trans->inputs[index * 4 + i] = + qir_VARY_ADD_C(c, + qir_MOV(c, + vary)); + + trans->num_inputs++; + } + } + } + break; + } +} + static void emit_tgsi_instruction(struct tgsi_to_qir *trans, struct tgsi_full_instruction *tgsi_inst) @@ -356,11 +392,6 @@ parse_tgsi_immediate(struct tgsi_to_qir *trans, struct tgsi_full_immediate *imm) static void emit_frag_init(struct tgsi_to_qir *trans) { - /* XXX: lols */ - for (int i = 0; i < 4; i++) { - trans->inputs[i] = qir_uniform_ui(trans, fui(1.0)); - } - } static void @@ -453,10 +484,15 @@ emit_1_wc_write(struct tgsi_to_qir *trans) static void emit_vert_end(struct tgsi_to_qir *trans) { + struct qcompile *c = trans->c; + emit_scaled_viewport_write(trans); emit_zs_write(trans); emit_1_wc_write(trans); - /* XXX: write varyings */ + + for (int i = 4; i < trans->num_outputs; i++) { + qir_VPM_WRITE(c, trans->outputs[i]); + } } static void @@ -523,6 +559,11 @@ vc4_shader_tgsi_to_qir(struct vc4_compiled_shader *shader, enum qstage stage, tgsi_parse_token(&trans->parser); switch (trans->parser.FullToken.Token.Type) { + case TGSI_TOKEN_TYPE_DECLARATION: + emit_tgsi_declaration(trans, + &trans->parser.FullToken.FullDeclaration); + break; + case TGSI_TOKEN_TYPE_INSTRUCTION: emit_tgsi_instruction(trans, &trans->parser.FullToken.FullInstruction); @@ -603,8 +644,8 @@ vc4_fs_compile(struct vc4_context *vc4, struct vc4_compiled_shader *shader, { struct tgsi_to_qir *trans = vc4_shader_tgsi_to_qir(shader, QSTAGE_FRAG, &key->base); + shader->num_inputs = trans->num_inputs; copy_uniform_state_to_shader(shader, 0, trans); - shader->bo = vc4_bo_alloc_mem(vc4->screen, trans->c->qpu_insts, trans->c->num_qpu_insts * sizeof(uint64_t), "fs_code"); diff --git a/src/gallium/drivers/vc4/vc4_qir.c b/src/gallium/drivers/vc4/vc4_qir.c index 4ee1f018fc5..02342f212c3 100644 --- a/src/gallium/drivers/vc4/vc4_qir.c +++ b/src/gallium/drivers/vc4/vc4_qir.c @@ -59,6 +59,7 @@ static const struct qir_op_info qir_op_info[] = { [QOP_VPM_WRITE] = { "vpm_write", 0, 1 }, [QOP_VPM_READ] = { "vpm_read", 0, 1 }, [QOP_TLB_COLOR_WRITE] = { "tlb_color", 0, 1 }, + [QOP_VARY_ADD_C] = { "vary_add_c", 1, 1 }, }; static const char * diff --git a/src/gallium/drivers/vc4/vc4_qir.h b/src/gallium/drivers/vc4/vc4_qir.h index 4263adcddd1..75b1933e6a6 100644 --- a/src/gallium/drivers/vc4/vc4_qir.h +++ b/src/gallium/drivers/vc4/vc4_qir.h @@ -68,6 +68,7 @@ enum qop { QOP_VPM_WRITE, QOP_VPM_READ, QOP_TLB_COLOR_WRITE, + QOP_VARY_ADD_C, }; struct simple_node { @@ -178,6 +179,7 @@ QIR_ALU1(RSQ) QIR_ALU1(EXP2) QIR_ALU1(LOG2) QIR_ALU2(PACK_SCALED) +QIR_ALU1(VARY_ADD_C) static inline void qir_VPM_WRITE(struct qcompile *c, struct qreg a) diff --git a/src/gallium/drivers/vc4/vc4_qpu_emit.c b/src/gallium/drivers/vc4/vc4_qpu_emit.c index 8cb5de15fff..f02fe822b07 100644 --- a/src/gallium/drivers/vc4/vc4_qpu_emit.c +++ b/src/gallium/drivers/vc4/vc4_qpu_emit.c @@ -299,6 +299,12 @@ vc4_generate_code(struct qcompile *c) qpu_m_NOP()); break; + case QOP_VARY_ADD_C: + insts[ni++] = qpu_inst(qpu_a_FADD(dst, + src[0], qpu_r5()), + qpu_m_NOP()); + break; + case QOP_PACK_SCALED: insts[ni++] = qpu_inst(qpu_a_MOV(dst, src[0]), qpu_m_NOP());