/**************************************************************************
*
- * Copyright 2009 VMWare Inc.
+ * Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
#include "util/u_math.h"
#include "util/u_memory.h"
+#include "util/u_prim.h"
-#define MAX_PRIM_VERTICES 6
/* fixme: move it from here */
#define MAX_PRIMITIVES 64
const void *constants,
unsigned size)
{
+ /* noop. added here for symmetry with the VS
+ * code and in case we'll ever want to allign
+ * the constants, e.g. when we'll change to a
+ * different interpreter */
}
if (!gs)
return NULL;
+ gs->draw = draw;
gs->state = *state;
gs->state.tokens = tgsi_dup_tokens(state->tokens);
if (!gs->state.tokens) {
TGSI_PROPERTY_GS_OUTPUT_PRIM)
gs->output_primitive = gs->info.properties[i].data[0];
else if (gs->info.properties[i].name ==
- TGSI_PROPERTY_GS_MAX_VERTICES)
+ TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES)
gs->max_output_vertices = gs->info.properties[i].data[0];
}
FREE(dgs);
}
-static INLINE int num_vertices_for_prim(int prim)
-{
- switch(prim) {
- case PIPE_PRIM_POINTS:
- return 1;
- case PIPE_PRIM_LINES:
- return 2;
- case PIPE_PRIM_LINE_LOOP:
- return 2;
- case PIPE_PRIM_LINE_STRIP:
- return 2;
- case PIPE_PRIM_TRIANGLES:
- return 3;
- case PIPE_PRIM_TRIANGLE_STRIP:
- return 3;
- case PIPE_PRIM_TRIANGLE_FAN:
- return 3;
- case PIPE_PRIM_LINES_ADJACENCY:
- case PIPE_PRIM_LINE_STRIP_ADJACENCY:
- return 4;
- case PIPE_PRIM_TRIANGLES_ADJACENCY:
- case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
- return 6;
- default:
- assert(!"Bad geometry shader input");
- return 0;
- }
-}
-
-static void draw_fetch_geometry_input(struct draw_geometry_shader *shader,
- int start_primitive,
- int num_primitives,
- const float (*input_ptr)[4],
- unsigned input_vertex_stride,
- unsigned inputs_from_vs)
-{
- struct tgsi_exec_machine *machine = shader->machine;
- unsigned slot, vs_slot, k, j;
- unsigned num_vertices = num_vertices_for_prim(shader->input_primitive);
- int idx = 0;
-
- for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; slot++) {
- /*debug_printf("Slot = %d (semantic = %d)\n", slot,
- shader->info.input_semantic_name[slot]);*/
- if (shader->info.input_semantic_name[slot] ==
- TGSI_SEMANTIC_PRIMID) {
- for (j = 0; j < num_primitives; ++j) {
- machine->Inputs[idx].xyzw[0].f[j] = (float)start_primitive + j;
- machine->Inputs[idx].xyzw[1].f[j] = (float)start_primitive + j;
- machine->Inputs[idx].xyzw[2].f[j] = (float)start_primitive + j;
- machine->Inputs[idx].xyzw[3].f[j] = (float)start_primitive + j;
- }
- ++idx;
- } else {
- for (j = 0; j < num_primitives; ++j) {
- int vidx = idx;
- const float (*prim_ptr)[4];
- /*debug_printf(" %d) Prim (num_verts = %d)\n", start_primitive + j,
- num_vertices);*/
- prim_ptr = (const float (*)[4])(
- (const char *)input_ptr +
- (j * num_vertices * input_vertex_stride));
-
- for (k = 0; k < num_vertices; ++k, ++vidx) {
- const float (*input)[4];
- input = (const float (*)[4])(
- (const char *)prim_ptr + (k * input_vertex_stride));
- vidx = k * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot;
- /*debug_printf("\t%d)(%d) Input vert:\n", vidx, k);*/
-#if 1
- assert(!util_is_inf_or_nan(input[vs_slot][0]));
- assert(!util_is_inf_or_nan(input[vs_slot][1]));
- assert(!util_is_inf_or_nan(input[vs_slot][2]));
- assert(!util_is_inf_or_nan(input[vs_slot][3]));
-#endif
- machine->Inputs[vidx].xyzw[0].f[j] = input[vs_slot][0];
- machine->Inputs[vidx].xyzw[1].f[j] = input[vs_slot][1];
- machine->Inputs[vidx].xyzw[2].f[j] = input[vs_slot][2];
- machine->Inputs[vidx].xyzw[3].f[j] = input[vs_slot][3];
-#if 0
- debug_printf("\t\t%d %f %f %f %f\n", slot,
- machine->Inputs[vidx].xyzw[0].f[j],
- machine->Inputs[vidx].xyzw[1].f[j],
- machine->Inputs[vidx].xyzw[2].f[j],
- machine->Inputs[vidx].xyzw[3].f[j]);
-#endif
- }
- }
- ++vs_slot;
- idx += num_vertices;
- }
- }
-}
-
+/*#define DEBUG_OUTPUTS 1*/
static INLINE void
draw_geometry_fetch_outputs(struct draw_geometry_shader *shader,
int num_primitives,
- float (*output)[4],
- unsigned vertex_size)
+ float (**p_output)[4])
{
struct tgsi_exec_machine *machine = shader->machine;
unsigned prim_idx, j, slot;
+ float (*output)[4];
+
+ output = *p_output;
/* Unswizzle all output results.
*/
- /* FIXME: handle all the primitives produced by the gs, not just
- * the first one
- unsigned prim_count =
- mach->Temps[TEMP_PRIMITIVE_I].xyzw[TEMP_PRIMITIVE_C].u[0];*/
+
for (prim_idx = 0; prim_idx < num_primitives; ++prim_idx) {
- unsigned num_verts_per_prim = machine->Primitives[0];
+ unsigned num_verts_per_prim = machine->Primitives[prim_idx];
+ shader->primitive_lengths[prim_idx + shader->emitted_primitives] =
+ machine->Primitives[prim_idx];
+ shader->emitted_vertices += num_verts_per_prim;
for (j = 0; j < num_verts_per_prim; j++) {
int idx = (prim_idx * num_verts_per_prim + j) *
shader->info.num_outputs;
#ifdef DEBUG_OUTPUTS
- debug_printf("%d) Output vert:\n", idx);
+ debug_printf("%d) Output vert:\n", idx / shader->info.num_outputs);
#endif
for (slot = 0; slot < shader->info.num_outputs; slot++) {
- output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[prim_idx];
- output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[prim_idx];
- output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[prim_idx];
- output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[prim_idx];
+ output[slot][0] = machine->Outputs[idx + slot].xyzw[0].f[0];
+ output[slot][1] = machine->Outputs[idx + slot].xyzw[1].f[0];
+ output[slot][2] = machine->Outputs[idx + slot].xyzw[2].f[0];
+ output[slot][3] = machine->Outputs[idx + slot].xyzw[3].f[0];
#ifdef DEBUG_OUTPUTS
debug_printf("\t%d: %f %f %f %f\n", slot,
output[slot][0],
#endif
debug_assert(!util_is_inf_or_nan(output[slot][0]));
}
- output = (float (*)[4])((char *)output + vertex_size);
+ output = (float (*)[4])((char *)output + shader->vertex_size);
}
}
+ *p_output = output;
+ shader->emitted_primitives += num_primitives;
}
-void draw_geometry_shader_run(struct draw_geometry_shader *shader,
- const float (*input)[4],
- float (*output)[4],
- const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
- unsigned count,
- unsigned input_stride,
- unsigned vertex_size)
+/*#define DEBUG_INPUTS 1*/
+static void draw_fetch_gs_input(struct draw_geometry_shader *shader,
+ unsigned *indices,
+ unsigned num_vertices,
+ unsigned prim_idx)
{
struct tgsi_exec_machine *machine = shader->machine;
- unsigned int i;
- unsigned num_vertices = num_vertices_for_prim(shader->input_primitive);
- unsigned num_primitives = count/num_vertices;
- unsigned inputs_from_vs = 0;
+ unsigned slot, vs_slot, i;
+ unsigned input_vertex_stride = shader->input_vertex_stride;
+ const float (*input_ptr)[4];
- for (i = 0; i < PIPE_MAX_CONSTANT_BUFFERS; i++) {
- machine->Consts[i] = constants[i];
- }
+ input_ptr = shader->input;
- for (i = 0; i < shader->info.num_inputs; ++i) {
- if (shader->info.input_semantic_name[i] != TGSI_SEMANTIC_PRIMID)
- ++inputs_from_vs;
+ for (i = 0; i < num_vertices; ++i) {
+ const float (*input)[4];
+#if DEBUG_INPUTS
+ debug_printf("%d) vertex index = %d (prim idx = %d)\n",
+ i, indices[i], prim_idx);
+#endif
+ input = (const float (*)[4])(
+ (const char *)input_ptr + (indices[i] * input_vertex_stride));
+ for (slot = 0, vs_slot = 0; slot < shader->info.num_inputs; ++slot) {
+ unsigned idx = i * TGSI_EXEC_MAX_INPUT_ATTRIBS + slot;
+ if (shader->info.input_semantic_name[slot] == TGSI_SEMANTIC_PRIMID) {
+ machine->Inputs[idx].xyzw[0].f[prim_idx] =
+ (float)shader->in_prim_idx;
+ machine->Inputs[idx].xyzw[1].f[prim_idx] =
+ (float)shader->in_prim_idx;
+ machine->Inputs[idx].xyzw[2].f[prim_idx] =
+ (float)shader->in_prim_idx;
+ machine->Inputs[idx].xyzw[3].f[prim_idx] =
+ (float)shader->in_prim_idx;
+ } else {
+#if DEBUG_INPUTS
+ debug_printf("\tSlot = %d, vs_slot = %d, idx = %d:\n",
+ slot, vs_slot, idx);
+#endif
+#if 1
+ assert(!util_is_inf_or_nan(input[vs_slot][0]));
+ assert(!util_is_inf_or_nan(input[vs_slot][1]));
+ assert(!util_is_inf_or_nan(input[vs_slot][2]));
+ assert(!util_is_inf_or_nan(input[vs_slot][3]));
+#endif
+ machine->Inputs[idx].xyzw[0].f[prim_idx] = input[vs_slot][0];
+ machine->Inputs[idx].xyzw[1].f[prim_idx] = input[vs_slot][1];
+ machine->Inputs[idx].xyzw[2].f[prim_idx] = input[vs_slot][2];
+ machine->Inputs[idx].xyzw[3].f[prim_idx] = input[vs_slot][3];
+#if DEBUG_INPUTS
+ debug_printf("\t\t%f %f %f %f\n",
+ machine->Inputs[idx].xyzw[0].f[prim_idx],
+ machine->Inputs[idx].xyzw[1].f[prim_idx],
+ machine->Inputs[idx].xyzw[2].f[prim_idx],
+ machine->Inputs[idx].xyzw[3].f[prim_idx]);
+#endif
+ ++vs_slot;
+ }
+ }
}
+}
- for (i = 0; i < num_primitives; ++i) {
- unsigned int max_primitives = 1;
+static void gs_flush(struct draw_geometry_shader *shader,
+ unsigned input_primitives)
+{
+ unsigned out_prim_count;
+ struct tgsi_exec_machine *machine = shader->machine;
+
+ debug_assert(input_primitives > 0 &&
+ input_primitives < 4);
- draw_fetch_geometry_input(shader, i, max_primitives, input,
- input_stride, inputs_from_vs);
+ tgsi_set_exec_mask(machine,
+ 1,
+ input_primitives > 1,
+ input_primitives > 2,
+ input_primitives > 3);
- tgsi_set_exec_mask(machine,
- 1,
- max_primitives > 1,
- max_primitives > 2,
- max_primitives > 3);
+ /* run interpreter */
+ tgsi_exec_machine_run(machine);
- /* run interpreter */
- tgsi_exec_machine_run(machine);
+ out_prim_count =
+ machine->Temps[TGSI_EXEC_TEMP_PRIMITIVE_I].xyzw[TGSI_EXEC_TEMP_PRIMITIVE_C].u[0];
+
+#if 0
+ debug_printf("PRIM emitted prims = %d (verts=%d), cur prim count = %d\n",
+ shader->emitted_primitives, shader->emitted_vertices,
+ out_prim_count);
+#endif
+ draw_geometry_fetch_outputs(shader, out_prim_count,
+ &shader->tmp_output);
+}
+
+static void gs_point(struct draw_geometry_shader *shader,
+ int idx)
+{
+ unsigned indices[1];
+
+ indices[0] = idx;
+
+ draw_fetch_gs_input(shader, indices, 1, 0);
+ ++shader->in_prim_idx;
+
+ gs_flush(shader, 1);
+}
+
+static void gs_line(struct draw_geometry_shader *shader,
+ int i0, int i1)
+{
+ unsigned indices[2];
- draw_geometry_fetch_outputs(shader, max_primitives,
- output, vertex_size);
+ indices[0] = i0;
+ indices[1] = i1;
+
+ draw_fetch_gs_input(shader, indices, 2, 0);
+ ++shader->in_prim_idx;
+
+ gs_flush(shader, 1);
+}
+
+static void gs_line_adj(struct draw_geometry_shader *shader,
+ int i0, int i1, int i2, int i3)
+{
+ unsigned indices[4];
+
+ indices[0] = i0;
+ indices[1] = i1;
+ indices[2] = i2;
+ indices[3] = i3;
+
+ draw_fetch_gs_input(shader, indices, 4, 0);
+ ++shader->in_prim_idx;
+
+ gs_flush(shader, 1);
+}
+
+static void gs_tri(struct draw_geometry_shader *shader,
+ int i0, int i1, int i2)
+{
+ unsigned indices[3];
+
+ indices[0] = i0;
+ indices[1] = i1;
+ indices[2] = i2;
+
+ draw_fetch_gs_input(shader, indices, 3, 0);
+ ++shader->in_prim_idx;
+
+ gs_flush(shader, 1);
+}
+
+static void gs_tri_adj(struct draw_geometry_shader *shader,
+ int i0, int i1, int i2,
+ int i3, int i4, int i5)
+{
+ unsigned indices[6];
+
+ indices[0] = i0;
+ indices[1] = i1;
+ indices[2] = i2;
+ indices[3] = i3;
+ indices[4] = i4;
+ indices[5] = i5;
+
+ draw_fetch_gs_input(shader, indices, 6, 0);
+ ++shader->in_prim_idx;
+
+ gs_flush(shader, 1);
+}
+
+#define FUNC gs_run
+#define GET_ELT(idx) (idx)
+#include "draw_gs_tmp.h"
+
+
+#define FUNC gs_run_elts
+#define LOCAL_VARS const ushort *elts = input_prims->elts;
+#define GET_ELT(idx) (elts[idx])
+#include "draw_gs_tmp.h"
+
+
+/**
+ * Execute geometry shader using TGSI interpreter.
+ */
+int draw_geometry_shader_run(struct draw_geometry_shader *shader,
+ const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
+ const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
+ const struct draw_vertex_info *input_verts,
+ const struct draw_prim_info *input_prim,
+ struct draw_vertex_info *output_verts,
+ struct draw_prim_info *output_prims )
+{
+ const float (*input)[4] = (const float (*)[4])input_verts->verts->data;
+ unsigned input_stride = input_verts->vertex_size;
+ unsigned vertex_size = input_verts->vertex_size;
+ struct tgsi_exec_machine *machine = shader->machine;
+ unsigned num_input_verts = input_prim->linear ?
+ input_verts->count :
+ input_prim->count;
+ unsigned num_in_primitives =
+ MAX2(u_gs_prims_for_vertices(input_prim->prim, num_input_verts),
+ u_gs_prims_for_vertices(shader->input_primitive, num_input_verts));
+ unsigned max_out_prims = u_gs_prims_for_vertices(shader->output_primitive,
+ shader->max_output_vertices)
+ * num_in_primitives;
+
+ output_verts->vertex_size = input_verts->vertex_size;
+ output_verts->stride = input_verts->vertex_size;
+ output_verts->verts =
+ (struct vertex_header *)MALLOC(input_verts->vertex_size *
+ num_in_primitives *
+ shader->max_output_vertices);
+
+
+#if 0
+ debug_printf("%s count = %d (in prims # = %d)\n",
+ __FUNCTION__, num_input_verts, num_in_primitives);
+ debug_printf("\tlinear = %d, prim_info->count = %d\n",
+ input_prim->linear, input_prim->count);
+ debug_printf("\tprimt pipe = %d, shader in = %d, shader out = %d, max out = %d\n",
+ input_prim->prim, shader->input_primitive,
+ shader->output_primitive,
+ shader->max_output_vertices);
+#endif
+
+ shader->emitted_vertices = 0;
+ shader->emitted_primitives = 0;
+ shader->vertex_size = vertex_size;
+ shader->tmp_output = (float (*)[4])output_verts->verts->data;
+ shader->in_prim_idx = 0;
+ shader->input_vertex_stride = input_stride;
+ shader->input = input;
+ if (shader->primitive_lengths) {
+ FREE(shader->primitive_lengths);
}
+ shader->primitive_lengths = MALLOC(max_out_prims * sizeof(unsigned));
+
+ tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS,
+ constants, constants_size);
+
+ if (input_prim->linear)
+ gs_run(shader, input_prim, input_verts,
+ output_prims, output_verts);
+ else
+ gs_run_elts(shader, input_prim, input_verts,
+ output_prims, output_verts);
+
+ /* Update prim_info:
+ */
+ output_prims->linear = TRUE;
+ output_prims->elts = NULL;
+ output_prims->start = 0;
+ output_prims->count = shader->emitted_vertices;
+ output_prims->prim = shader->output_primitive;
+ output_prims->flags = 0x0;
+ output_prims->primitive_lengths = shader->primitive_lengths;
+ output_prims->primitive_count = shader->emitted_primitives;
+ output_verts->count = shader->emitted_vertices;
+
+#if 0
+ debug_printf("GS finished, prims = %d, verts = %d\n",
+ output_prims->primitive_count,
+ output_verts->count);
+#endif
+
+ return shader->emitted_vertices;
}
void draw_geometry_shader_delete(struct draw_geometry_shader *shader)
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