#include <brw_vs.h>
#include <brw_gs.h>
#include <brw_cs.h>
+#include "brw_vec4_gs_visitor.h"
#include <mesa/main/shaderobj.h>
#include <mesa/main/fbobject.h>
(const gl_constant_value *)&null_data->client_data[i * sizeof(float)];
}
+/**
+ * Return a bitfield where bit n is set if barycentric interpolation mode n
+ * (see enum brw_wm_barycentric_interp_mode) is needed by the fragment shader.
+ */
+unsigned
+brw_compute_barycentric_interp_modes(const struct brw_device_info *devinfo,
+ bool shade_model_flat,
+ bool persample_shading,
+ nir_shader *shader)
+{
+ unsigned barycentric_interp_modes = 0;
+
+ nir_foreach_variable(var, &shader->inputs) {
+ enum glsl_interp_qualifier interp_qualifier =
+ (enum glsl_interp_qualifier) var->data.interpolation;
+ bool is_centroid = var->data.centroid && !persample_shading;
+ bool is_sample = var->data.sample || persample_shading;
+ bool is_gl_Color = (var->data.location == VARYING_SLOT_COL0) ||
+ (var->data.location == VARYING_SLOT_COL1);
+
+ /* Ignore WPOS and FACE, because they don't require interpolation. */
+ if (var->data.location == VARYING_SLOT_POS ||
+ var->data.location == VARYING_SLOT_FACE)
+ continue;
+
+ /* Determine the set (or sets) of barycentric coordinates needed to
+ * interpolate this variable. Note that when
+ * brw->needs_unlit_centroid_workaround is set, centroid interpolation
+ * uses PIXEL interpolation for unlit pixels and CENTROID interpolation
+ * for lit pixels, so we need both sets of barycentric coordinates.
+ */
+ if (interp_qualifier == INTERP_QUALIFIER_NOPERSPECTIVE) {
+ if (is_centroid) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_NONPERSPECTIVE_CENTROID_BARYCENTRIC;
+ } else if (is_sample) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_NONPERSPECTIVE_SAMPLE_BARYCENTRIC;
+ }
+ if ((!is_centroid && !is_sample) ||
+ devinfo->needs_unlit_centroid_workaround) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_NONPERSPECTIVE_PIXEL_BARYCENTRIC;
+ }
+ } else if (interp_qualifier == INTERP_QUALIFIER_SMOOTH ||
+ (!(shade_model_flat && is_gl_Color) &&
+ interp_qualifier == INTERP_QUALIFIER_NONE)) {
+ if (is_centroid) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_PERSPECTIVE_CENTROID_BARYCENTRIC;
+ } else if (is_sample) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_PERSPECTIVE_SAMPLE_BARYCENTRIC;
+ }
+ if ((!is_centroid && !is_sample) ||
+ devinfo->needs_unlit_centroid_workaround) {
+ barycentric_interp_modes |=
+ 1 << BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC;
+ }
+ }
+ }
+
+ return barycentric_interp_modes;
+}
+
static void
brw_vs_populate_key(struct brw_context *brw,
struct brw_vertex_program *vp,
key->point_coord_replace |= (1 << i);
}
}
-
- /* _NEW_TEXTURE */
- brw_populate_sampler_prog_key_data(ctx, prog, brw->vs.base.sampler_count,
- &key->tex);
}
static bool
/* Emit GEN4 code.
*/
program = brw_vs_emit(brw, mem_ctx, key, prog_data, &vp->program,
- prog, &program_size);
+ prog, -1, &program_size);
if (program == NULL) {
ralloc_free(mem_ctx);
return false;
struct brw_wm_prog_key *key)
{
struct gl_context *ctx = &brw->ctx;
- struct gl_program *prog = (struct gl_program *) brw->fragment_program;
GLuint lookup = 0;
GLuint line_aa;
bool program_uses_dfdy = fp->program.UsesDFdy;
/* _NEW_FRAG_CLAMP | _NEW_BUFFERS */
key->clamp_fragment_color = ctx->Color._ClampFragmentColor;
- /* _NEW_TEXTURE */
- brw_populate_sampler_prog_key_data(ctx, prog, brw->wm.base.sampler_count,
- &key->tex);
-
/* _NEW_BUFFERS */
/*
* Include the draw buffer origin and height so that we can calculate
prog_data->binding_table.render_target_start = 0;
program = brw_wm_fs_emit(brw, mem_ctx, key, prog_data,
- &fp->program, prog, &program_size);
+ &fp->program, prog, -1, -1, &program_size);
if (program == NULL) {
ralloc_free(mem_ctx);
return false;
return true;
}
-static void
-brw_gs_populate_key(struct brw_context *brw,
- struct anv_pipeline *pipeline,
+bool
+anv_codegen_gs_prog(struct brw_context *brw,
+ struct gl_shader_program *prog,
struct brw_geometry_program *gp,
- struct brw_gs_prog_key *key)
+ struct brw_gs_prog_key *key,
+ struct anv_pipeline *pipeline)
{
- struct gl_context *ctx = &brw->ctx;
- struct brw_stage_state *stage_state = &brw->gs.base;
- struct gl_program *prog = &gp->program.Base;
+ struct brw_gs_compile c;
- memset(key, 0, sizeof(*key));
+ memset(&c, 0, sizeof(c));
+ c.key = *key;
+ c.gp = gp;
- key->program_string_id = gp->id;
+ c.prog_data.include_primitive_id =
+ (gp->program.Base.InputsRead & VARYING_BIT_PRIMITIVE_ID) != 0;
- /* _NEW_TEXTURE */
- brw_populate_sampler_prog_key_data(ctx, prog, stage_state->sampler_count,
- &key->tex);
-}
+ c.prog_data.invocations = gp->program.Invocations;
-static bool
-really_do_gs_prog(struct brw_context *brw,
- struct gl_shader_program *prog,
- struct brw_geometry_program *gp,
- struct brw_gs_prog_key *key, struct anv_pipeline *pipeline)
-{
- struct brw_gs_compile_output output;
-
- /* FIXME: We pass the bind map to the compile in the output struct. Need
- * something better. */
- set_binding_table_layout(&output.prog_data.base.base,
+ set_binding_table_layout(&c.prog_data.base.base,
pipeline, VK_SHADER_STAGE_GEOMETRY);
- brw_compile_gs_prog(brw, prog, gp, key, &output);
+ /* Allocate the references to the uniforms that will end up in the
+ * prog_data associated with the compiled program, and which will be freed
+ * by the state cache.
+ *
+ * Note: param_count needs to be num_uniform_components * 4, since we add
+ * padding around uniform values below vec4 size, so the worst case is that
+ * every uniform is a float which gets padded to the size of a vec4.
+ */
+ struct gl_shader *gs = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
+ int param_count = gp->program.Base.nir->num_uniforms * 4;
+
+ c.prog_data.base.base.param =
+ rzalloc_array(NULL, const gl_constant_value *, param_count);
+ c.prog_data.base.base.pull_param =
+ rzalloc_array(NULL, const gl_constant_value *, param_count);
+ c.prog_data.base.base.image_param =
+ rzalloc_array(NULL, struct brw_image_param, gs->NumImages);
+ c.prog_data.base.base.nr_params = param_count;
+ c.prog_data.base.base.nr_image_params = gs->NumImages;
+
+ brw_nir_setup_glsl_uniforms(gp->program.Base.nir, prog, &gp->program.Base,
+ &c.prog_data.base.base, false);
+
+ if (brw->gen >= 8) {
+ c.prog_data.static_vertex_count = !gp->program.Base.nir ? -1 :
+ nir_gs_count_vertices(gp->program.Base.nir);
+ }
+
+ if (brw->gen >= 7) {
+ if (gp->program.OutputType == GL_POINTS) {
+ /* When the output type is points, the geometry shader may output data
+ * to multiple streams, and EndPrimitive() has no effect. So we
+ * configure the hardware to interpret the control data as stream ID.
+ */
+ c.prog_data.control_data_format = GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_SID;
+
+ /* We only have to emit control bits if we are using streams */
+ if (prog->Geom.UsesStreams)
+ c.control_data_bits_per_vertex = 2;
+ else
+ c.control_data_bits_per_vertex = 0;
+ } else {
+ /* When the output type is triangle_strip or line_strip, EndPrimitive()
+ * may be used to terminate the current strip and start a new one
+ * (similar to primitive restart), and outputting data to multiple
+ * streams is not supported. So we configure the hardware to interpret
+ * the control data as EndPrimitive information (a.k.a. "cut bits").
+ */
+ c.prog_data.control_data_format = GEN7_GS_CONTROL_DATA_FORMAT_GSCTL_CUT;
+
+ /* We only need to output control data if the shader actually calls
+ * EndPrimitive().
+ */
+ c.control_data_bits_per_vertex = gp->program.UsesEndPrimitive ? 1 : 0;
+ }
+ } else {
+ /* There are no control data bits in gen6. */
+ c.control_data_bits_per_vertex = 0;
+
+ /* If it is using transform feedback, enable it */
+ if (prog->TransformFeedback.NumVarying)
+ c.prog_data.gen6_xfb_enabled = true;
+ else
+ c.prog_data.gen6_xfb_enabled = false;
+ }
+ c.control_data_header_size_bits =
+ gp->program.VerticesOut * c.control_data_bits_per_vertex;
+
+ /* 1 HWORD = 32 bytes = 256 bits */
+ c.prog_data.control_data_header_size_hwords =
+ ALIGN(c.control_data_header_size_bits, 256) / 256;
+
+ GLbitfield64 outputs_written = gp->program.Base.OutputsWritten;
+
+ brw_compute_vue_map(brw->intelScreen->devinfo,
+ &c.prog_data.base.vue_map, outputs_written,
+ prog ? prog->SeparateShader : false);
+
+ /* Compute the output vertex size.
+ *
+ * From the Ivy Bridge PRM, Vol2 Part1 7.2.1.1 STATE_GS - Output Vertex
+ * Size (p168):
+ *
+ * [0,62] indicating [1,63] 16B units
+ *
+ * Specifies the size of each vertex stored in the GS output entry
+ * (following any Control Header data) as a number of 128-bit units
+ * (minus one).
+ *
+ * Programming Restrictions: The vertex size must be programmed as a
+ * multiple of 32B units with the following exception: Rendering is
+ * disabled (as per SOL stage state) and the vertex size output by the
+ * GS thread is 16B.
+ *
+ * If rendering is enabled (as per SOL state) the vertex size must be
+ * programmed as a multiple of 32B units. In other words, the only time
+ * software can program a vertex size with an odd number of 16B units
+ * is when rendering is disabled.
+ *
+ * Note: B=bytes in the above text.
+ *
+ * It doesn't seem worth the extra trouble to optimize the case where the
+ * vertex size is 16B (especially since this would require special-casing
+ * the GEN assembly that writes to the URB). So we just set the vertex
+ * size to a multiple of 32B (2 vec4's) in all cases.
+ *
+ * The maximum output vertex size is 62*16 = 992 bytes (31 hwords). We
+ * budget that as follows:
+ *
+ * 512 bytes for varyings (a varying component is 4 bytes and
+ * gl_MaxGeometryOutputComponents = 128)
+ * 16 bytes overhead for VARYING_SLOT_PSIZ (each varying slot is 16
+ * bytes)
+ * 16 bytes overhead for gl_Position (we allocate it a slot in the VUE
+ * even if it's not used)
+ * 32 bytes overhead for gl_ClipDistance (we allocate it 2 VUE slots
+ * whenever clip planes are enabled, even if the shader doesn't
+ * write to gl_ClipDistance)
+ * 16 bytes overhead since the VUE size must be a multiple of 32 bytes
+ * (see below)--this causes up to 1 VUE slot to be wasted
+ * 400 bytes available for varying packing overhead
+ *
+ * Worst-case varying packing overhead is 3/4 of a varying slot (12 bytes)
+ * per interpolation type, so this is plenty.
+ *
+ */
+ unsigned output_vertex_size_bytes = c.prog_data.base.vue_map.num_slots * 16;
+ assert(brw->gen == 6 ||
+ output_vertex_size_bytes <= GEN7_MAX_GS_OUTPUT_VERTEX_SIZE_BYTES);
+ c.prog_data.output_vertex_size_hwords =
+ ALIGN(output_vertex_size_bytes, 32) / 32;
+
+ /* Compute URB entry size. The maximum allowed URB entry size is 32k.
+ * That divides up as follows:
+ *
+ * 64 bytes for the control data header (cut indices or StreamID bits)
+ * 4096 bytes for varyings (a varying component is 4 bytes and
+ * gl_MaxGeometryTotalOutputComponents = 1024)
+ * 4096 bytes overhead for VARYING_SLOT_PSIZ (each varying slot is 16
+ * bytes/vertex and gl_MaxGeometryOutputVertices is 256)
+ * 4096 bytes overhead for gl_Position (we allocate it a slot in the VUE
+ * even if it's not used)
+ * 8192 bytes overhead for gl_ClipDistance (we allocate it 2 VUE slots
+ * whenever clip planes are enabled, even if the shader doesn't
+ * write to gl_ClipDistance)
+ * 4096 bytes overhead since the VUE size must be a multiple of 32
+ * bytes (see above)--this causes up to 1 VUE slot to be wasted
+ * 8128 bytes available for varying packing overhead
+ *
+ * Worst-case varying packing overhead is 3/4 of a varying slot per
+ * interpolation type, which works out to 3072 bytes, so this would allow
+ * us to accommodate 2 interpolation types without any danger of running
+ * out of URB space.
+ *
+ * In practice, the risk of running out of URB space is very small, since
+ * the above figures are all worst-case, and most of them scale with the
+ * number of output vertices. So we'll just calculate the amount of space
+ * we need, and if it's too large, fail to compile.
+ *
+ * The above is for gen7+ where we have a single URB entry that will hold
+ * all the output. In gen6, we will have to allocate URB entries for every
+ * vertex we emit, so our URB entries only need to be large enough to hold
+ * a single vertex. Also, gen6 does not have a control data header.
+ */
+ unsigned output_size_bytes;
+ if (brw->gen >= 7) {
+ output_size_bytes =
+ c.prog_data.output_vertex_size_hwords * 32 * gp->program.VerticesOut;
+ output_size_bytes += 32 * c.prog_data.control_data_header_size_hwords;
+ } else {
+ output_size_bytes = c.prog_data.output_vertex_size_hwords * 32;
+ }
+
+ /* Broadwell stores "Vertex Count" as a full 8 DWord (32 byte) URB output,
+ * which comes before the control header.
+ */
+ if (brw->gen >= 8)
+ output_size_bytes += 32;
+
+ assert(output_size_bytes >= 1);
+ int max_output_size_bytes = GEN7_MAX_GS_URB_ENTRY_SIZE_BYTES;
+ if (brw->gen == 6)
+ max_output_size_bytes = GEN6_MAX_GS_URB_ENTRY_SIZE_BYTES;
+ if (output_size_bytes > max_output_size_bytes)
+ return false;
- pipeline->gs_vec4 = upload_kernel(pipeline, output.program, output.program_size);
+
+ /* URB entry sizes are stored as a multiple of 64 bytes in gen7+ and
+ * a multiple of 128 bytes in gen6.
+ */
+ if (brw->gen >= 7)
+ c.prog_data.base.urb_entry_size = ALIGN(output_size_bytes, 64) / 64;
+ else
+ c.prog_data.base.urb_entry_size = ALIGN(output_size_bytes, 128) / 128;
+
+ /* FIXME: Need to pull this from nir shader. */
+ c.prog_data.output_topology = _3DPRIM_TRISTRIP;
+
+ /* The GLSL linker will have already matched up GS inputs and the outputs
+ * of prior stages. The driver does extend VS outputs in some cases, but
+ * only for legacy OpenGL or Gen4-5 hardware, neither of which offer
+ * geometry shader support. So we can safely ignore that.
+ *
+ * For SSO pipelines, we use a fixed VUE map layout based on variable
+ * locations, so we can rely on rendezvous-by-location making this work.
+ *
+ * However, we need to ignore VARYING_SLOT_PRIMITIVE_ID, as it's not
+ * written by previous stages and shows up via payload magic.
+ */
+ GLbitfield64 inputs_read =
+ gp->program.Base.InputsRead & ~VARYING_BIT_PRIMITIVE_ID;
+ brw_compute_vue_map(brw->intelScreen->devinfo,
+ &c.input_vue_map, inputs_read,
+ prog->SeparateShader);
+
+ /* GS inputs are read from the VUE 256 bits (2 vec4's) at a time, so we
+ * need to program a URB read length of ceiling(num_slots / 2).
+ */
+ c.prog_data.base.urb_read_length = (c.input_vue_map.num_slots + 1) / 2;
+
+ void *mem_ctx = ralloc_context(NULL);
+ unsigned program_size;
+ const unsigned *program =
+ brw_gs_emit(brw, prog, &c, mem_ctx, -1, &program_size);
+ if (program == NULL) {
+ ralloc_free(mem_ctx);
+ return false;
+ }
+
+ pipeline->gs_vec4 = upload_kernel(pipeline, program, program_size);
pipeline->gs_vertex_count = gp->program.VerticesIn;
- ralloc_free(output.mem_ctx);
+ ralloc_free(mem_ctx);
return true;
}
anv_nir_apply_dynamic_offsets(pipeline, cs->Program->nir, &prog_data->base);
program = brw_cs_emit(brw, mem_ctx, key, prog_data,
- &cp->program, prog, &program_size);
+ &cp->program, prog, -1, &program_size);
if (program == NULL) {
ralloc_free(mem_ctx);
return false;
compiler->brw->intelScreen = compiler->screen;
compiler->screen->devinfo = &device->info;
- brw_process_intel_debug_variable(compiler->screen);
+ brw_process_intel_debug_variable();
compiler->screen->compiler = brw_compiler_create(compiler, &device->info);
brw->use_rep_send = pipeline->use_repclear;
brw->no_simd8 = pipeline->use_repclear;
- program = brw->ctx.Driver.NewShaderProgram(name);
+ program = _mesa_new_shader_program(name);
program->Shaders = (struct gl_shader **)
calloc(VK_SHADER_STAGE_NUM, sizeof(struct gl_shader *));
fail_if(program == NULL || program->Shaders == NULL,
program->_LinkedShaders[MESA_SHADER_GEOMETRY]->Program;
struct brw_geometry_program *bgp = brw_geometry_program(gp);
- brw_gs_populate_key(brw, pipeline, bgp, &gs_key);
-
- success = really_do_gs_prog(brw, program, bgp, &gs_key, pipeline);
+ success = anv_codegen_gs_prog(brw, program, bgp, &gs_key, pipeline);
fail_if(!success, "do_gs_prog failed\n");
add_compiled_stage(pipeline, VK_SHADER_STAGE_GEOMETRY,
&pipeline->gs_prog_data.base.base);
&pipeline->cs_prog_data.base);
}
- brw->ctx.Driver.DeleteShaderProgram(&brw->ctx, program);
+ _mesa_delete_shader_program(&brw->ctx, program);
struct anv_device *device = compiler->device;
while (device->scratch_block_pool.bo.size < pipeline->total_scratch)
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