From 89d8577fb3036547ef0b47498cc8dc5c77f886e0 Mon Sep 17 00:00:00 2001 From: Zack Rusin Date: Mon, 14 Dec 2009 17:11:46 -0500 Subject: gallium: add geometry shader support to gallium --- src/gallium/auxiliary/tgsi/tgsi_dump.c | 4 ++- src/gallium/auxiliary/tgsi/tgsi_exec.c | 45 +++++++++++++++++++++++++++++++--- src/gallium/auxiliary/tgsi/tgsi_exec.h | 15 +++++++++--- src/gallium/auxiliary/tgsi/tgsi_text.c | 4 ++- 4 files changed, 59 insertions(+), 9 deletions(-) (limited to 'src/gallium/auxiliary/tgsi') diff --git a/src/gallium/auxiliary/tgsi/tgsi_dump.c b/src/gallium/auxiliary/tgsi/tgsi_dump.c index 5e7e5d2ff9..bb4f564161 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_dump.c +++ b/src/gallium/auxiliary/tgsi/tgsi_dump.c @@ -122,7 +122,9 @@ static const char *semantic_names[] = "GENERIC", "NORMAL", "FACE", - "EDGEFLAG" + "EDGEFLAG", + "VERTICES_IN", + "PRIM_ID" }; static const char *immediate_type_names[] = diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c index 123117cb0a..e2f28783cc 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.c +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c @@ -372,6 +372,7 @@ tgsi_exec_machine_create( void ) memset(mach, 0, sizeof(*mach)); mach->Addrs = &mach->Temps[TGSI_EXEC_TEMP_ADDR]; + mach->MaxGeometryShaderOutputs = TGSI_MAX_TOTAL_VERTICES; mach->Predicates = &mach->Temps[TGSI_EXEC_TEMP_P0]; /* Setup constants. */ @@ -1468,6 +1469,15 @@ store_dest( index = mach->Temps[TEMP_OUTPUT_I].xyzw[TEMP_OUTPUT_C].u[0] + reg->Register.Index; dst = &mach->Outputs[offset + index].xyzw[chan_index]; +#if 0 + if (TGSI_PROCESSOR_GEOMETRY == mach->Processor) { + fprintf(stderr, "STORING OUT[%d] mask(%d), = (", index, execmask); + for (i = 0; i < QUAD_SIZE; i++) + if (execmask & (1 << i)) + fprintf(stderr, "%f, ", chan->f[i]); + fprintf(stderr, ")\n"); + } +#endif break; case TGSI_FILE_TEMPORARY: @@ -1638,6 +1648,35 @@ exec_kilp(struct tgsi_exec_machine *mach, mach->Temps[TEMP_KILMASK_I].xyzw[TEMP_KILMASK_C].u[0] |= kilmask; } +static void +emit_vertex(struct tgsi_exec_machine *mach) +{ + /* FIXME: check for exec mask correctly + unsigned i; + for (i = 0; i < QUAD_SIZE; ++i) { + if ((mach->ExecMask & (1 << i))) + */ + if (mach->ExecMask) { + mach->Temps[TEMP_OUTPUT_I].xyzw[TEMP_OUTPUT_C].u[0] += mach->NumOutputs; + mach->Primitives[mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0]]++; + } +} + +static void +emit_primitive(struct tgsi_exec_machine *mach) +{ + unsigned *prim_count = &mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0]; + /* FIXME: check for exec mask correctly + unsigned i; + for (i = 0; i < QUAD_SIZE; ++i) { + if ((mach->ExecMask & (1 << i))) + */ + if (mach->ExecMask) { + ++(*prim_count); + debug_assert((*prim_count * mach->NumOutputs) < mach->MaxGeometryShaderOutputs); + mach->Primitives[*prim_count] = 0; + } +} /* * Fetch a four texture samples using STR texture coordinates. @@ -3087,13 +3126,11 @@ exec_instruction( break; case TGSI_OPCODE_EMIT: - mach->Temps[TEMP_OUTPUT_I].xyzw[TEMP_OUTPUT_C].u[0] += 16; - mach->Primitives[mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0]]++; + emit_vertex(mach); break; case TGSI_OPCODE_ENDPRIM: - mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0]++; - mach->Primitives[mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0]] = 0; + emit_primitive(mach); break; case TGSI_OPCODE_BGNFOR: diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.h b/src/gallium/auxiliary/tgsi/tgsi_exec.h index fd94c1bc44..afaf5c39c4 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_exec.h +++ b/src/gallium/auxiliary/tgsi/tgsi_exec.h @@ -191,6 +191,14 @@ struct tgsi_exec_labels */ #define TGSI_EXEC_MAX_CONST_BUFFER 4096 +/* The maximum number of vertices per primitive */ +#define TGSI_MAX_PRIM_VERTICES 6 + +/* The maximum number of primitives to be generated */ +#define TGSI_MAX_PRIMITIVES 64 + +/* The maximum total number of vertices */ +#define TGSI_MAX_TOTAL_VERTICES (TGSI_MAX_PRIM_VERTICES * TGSI_MAX_PRIMITIVES * PIPE_MAX_ATTRIBS) /** function call/activation record */ struct tgsi_call_record @@ -201,7 +209,6 @@ struct tgsi_call_record uint ReturnAddr; }; - /** * Run-time virtual machine state for executing TGSI shader. */ @@ -214,8 +221,8 @@ struct tgsi_exec_machine float Imms[TGSI_EXEC_NUM_IMMEDIATES][4]; - struct tgsi_exec_vector Inputs[PIPE_MAX_ATTRIBS]; - struct tgsi_exec_vector Outputs[PIPE_MAX_ATTRIBS]; + struct tgsi_exec_vector Inputs[TGSI_MAX_PRIM_VERTICES * PIPE_MAX_ATTRIBS]; + struct tgsi_exec_vector Outputs[TGSI_MAX_TOTAL_VERTICES]; struct tgsi_exec_vector *Addrs; struct tgsi_exec_vector *Predicates; @@ -229,6 +236,8 @@ struct tgsi_exec_machine /* GEOMETRY processor only. */ unsigned *Primitives; + unsigned NumOutputs; + unsigned MaxGeometryShaderOutputs; /* FRAGMENT processor only. */ const struct tgsi_interp_coef *InterpCoefs; diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c index f000958bfc..84e863b237 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_text.c +++ b/src/gallium/auxiliary/tgsi/tgsi_text.c @@ -791,7 +791,9 @@ static const char *semantic_names[TGSI_SEMANTIC_COUNT] = "PSIZE", "GENERIC", "NORMAL", - "FACE" + "FACE", + "VERTICES_IN", + "PRIM_ID" }; static const char *interpolate_names[TGSI_INTERPOLATE_COUNT] = -- cgit v1.2.3