#include <assert.h>
#include "common/gen_device_info.h"
+#include "common/gen_sample_positions.h"
#include "genxml/gen_macros.h"
+#include "main/bufferobj.h"
+#include "main/context.h"
+#include "main/enums.h"
+#include "main/macros.h"
+
#include "brw_context.h"
#if GEN_GEN == 6
#include "brw_defines.h"
#endif
+#include "brw_draw.h"
+#include "brw_multisample_state.h"
#include "brw_state.h"
#include "brw_wm.h"
#include "brw_util.h"
#include "intel_buffer_objects.h"
#include "intel_fbo.h"
+#include "main/enums.h"
#include "main/fbobject.h"
#include "main/framebuffer.h"
+#include "main/glformats.h"
+#include "main/shaderapi.h"
#include "main/stencil.h"
#include "main/transformfeedback.h"
+#include "main/varray.h"
+#include "main/viewport.h"
UNUSED static void *
emit_dwords(struct brw_context *brw, unsigned n)
};
}
+static inline struct brw_address
+render_ro_bo(struct brw_bo *bo, uint32_t offset)
+{
+ return (struct brw_address) {
+ .bo = bo,
+ .offset = offset,
+ .read_domains = I915_GEM_DOMAIN_RENDER,
+ .write_domain = 0,
+ };
+}
+
static inline struct brw_address
instruction_bo(struct brw_bo *bo, uint32_t offset)
{
};
}
+static inline struct brw_address
+vertex_bo(struct brw_bo *bo, uint32_t offset)
+{
+ return (struct brw_address) {
+ .bo = bo,
+ .offset = offset,
+ .read_domains = I915_GEM_DOMAIN_VERTEX,
+ .write_domain = 0,
+ };
+}
+
#include "genxml/genX_pack.h"
#define _brw_cmd_length(cmd) cmd ## _length
_brw_cmd_pack(cmd)(brw, (void *)_dst, &name), \
_dst = NULL)
-#if GEN_GEN >= 6
/**
- * Determine the appropriate attribute override value to store into the
- * 3DSTATE_SF structure for a given fragment shader attribute. The attribute
- * override value contains two pieces of information: the location of the
- * attribute in the VUE (relative to urb_entry_read_offset, see below), and a
- * flag indicating whether to "swizzle" the attribute based on the direction
- * the triangle is facing.
- *
- * If an attribute is "swizzled", then the given VUE location is used for
- * front-facing triangles, and the VUE location that immediately follows is
- * used for back-facing triangles. We use this to implement the mapping from
- * gl_FrontColor/gl_BackColor to gl_Color.
- *
- * urb_entry_read_offset is the offset into the VUE at which the SF unit is
- * being instructed to begin reading attribute data. It can be set to a
- * nonzero value to prevent the SF unit from wasting time reading elements of
- * the VUE that are not needed by the fragment shader. It is measured in
- * 256-bit increments.
+ * Polygon stipple packet
*/
static void
-genX(get_attr_override)(struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) *attr,
- const struct brw_vue_map *vue_map,
- int urb_entry_read_offset, int fs_attr,
- bool two_side_color, uint32_t *max_source_attr)
+genX(upload_polygon_stipple)(struct brw_context *brw)
{
- /* Find the VUE slot for this attribute. */
- int slot = vue_map->varying_to_slot[fs_attr];
-
- /* Viewport and Layer are stored in the VUE header. We need to override
- * them to zero if earlier stages didn't write them, as GL requires that
- * they read back as zero when not explicitly set.
- */
- if (fs_attr == VARYING_SLOT_VIEWPORT || fs_attr == VARYING_SLOT_LAYER) {
- attr->ComponentOverrideX = true;
- attr->ComponentOverrideW = true;
- attr->ConstantSource = CONST_0000;
-
- if (!(vue_map->slots_valid & VARYING_BIT_LAYER))
- attr->ComponentOverrideY = true;
- if (!(vue_map->slots_valid & VARYING_BIT_VIEWPORT))
- attr->ComponentOverrideZ = true;
+ struct gl_context *ctx = &brw->ctx;
+ /* _NEW_POLYGON */
+ if (!ctx->Polygon.StippleFlag)
return;
- }
-
- /* If there was only a back color written but not front, use back
- * as the color instead of undefined
- */
- if (slot == -1 && fs_attr == VARYING_SLOT_COL0)
- slot = vue_map->varying_to_slot[VARYING_SLOT_BFC0];
- if (slot == -1 && fs_attr == VARYING_SLOT_COL1)
- slot = vue_map->varying_to_slot[VARYING_SLOT_BFC1];
- if (slot == -1) {
- /* This attribute does not exist in the VUE--that means that the vertex
- * shader did not write to it. This means that either:
- *
- * (a) This attribute is a texture coordinate, and it is going to be
- * replaced with point coordinates (as a consequence of a call to
- * glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE)), so the
- * hardware will ignore whatever attribute override we supply.
- *
- * (b) This attribute is read by the fragment shader but not written by
- * the vertex shader, so its value is undefined. Therefore the
- * attribute override we supply doesn't matter.
- *
- * (c) This attribute is gl_PrimitiveID, and it wasn't written by the
- * previous shader stage.
- *
- * Note that we don't have to worry about the cases where the attribute
- * is gl_PointCoord or is undergoing point sprite coordinate
- * replacement, because in those cases, this function isn't called.
- *
- * In case (c), we need to program the attribute overrides so that the
- * primitive ID will be stored in this slot. In every other case, the
- * attribute override we supply doesn't matter. So just go ahead and
- * program primitive ID in every case.
+ brw_batch_emit(brw, GENX(3DSTATE_POLY_STIPPLE_PATTERN), poly) {
+ /* Polygon stipple is provided in OpenGL order, i.e. bottom
+ * row first. If we're rendering to a window (i.e. the
+ * default frame buffer object, 0), then we need to invert
+ * it to match our pixel layout. But if we're rendering
+ * to a FBO (i.e. any named frame buffer object), we *don't*
+ * need to invert - we already match the layout.
*/
- attr->ComponentOverrideW = true;
- attr->ComponentOverrideX = true;
- attr->ComponentOverrideY = true;
- attr->ComponentOverrideZ = true;
- attr->ConstantSource = PRIM_ID;
- return;
+ if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ for (unsigned i = 0; i < 32; i++)
+ poly.PatternRow[i] = ctx->PolygonStipple[31 - i]; /* invert */
+ } else {
+ for (unsigned i = 0; i < 32; i++)
+ poly.PatternRow[i] = ctx->PolygonStipple[i];
+ }
}
+}
- /* Compute the location of the attribute relative to urb_entry_read_offset.
- * Each increment of urb_entry_read_offset represents a 256-bit value, so
- * it counts for two 128-bit VUE slots.
- */
- int source_attr = slot - 2 * urb_entry_read_offset;
- assert(source_attr >= 0 && source_attr < 32);
+static const struct brw_tracked_state genX(polygon_stipple) = {
+ .dirty = {
+ .mesa = _NEW_POLYGON |
+ _NEW_POLYGONSTIPPLE,
+ .brw = BRW_NEW_CONTEXT,
+ },
+ .emit = genX(upload_polygon_stipple),
+};
- /* If we are doing two-sided color, and the VUE slot following this one
- * represents a back-facing color, then we need to instruct the SF unit to
- * do back-facing swizzling.
- */
- bool swizzling = two_side_color &&
- ((vue_map->slot_to_varying[slot] == VARYING_SLOT_COL0 &&
- vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC0) ||
- (vue_map->slot_to_varying[slot] == VARYING_SLOT_COL1 &&
- vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC1));
+/**
+ * Polygon stipple offset packet
+ */
+static void
+genX(upload_polygon_stipple_offset)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
- /* Update max_source_attr. If swizzling, the SF will read this slot + 1. */
- if (*max_source_attr < source_attr + swizzling)
- *max_source_attr = source_attr + swizzling;
+ /* _NEW_POLYGON */
+ if (!ctx->Polygon.StippleFlag)
+ return;
- attr->SourceAttribute = source_attr;
- if (swizzling)
- attr->SwizzleSelect = INPUTATTR_FACING;
+ brw_batch_emit(brw, GENX(3DSTATE_POLY_STIPPLE_OFFSET), poly) {
+ /* _NEW_BUFFERS
+ *
+ * If we're drawing to a system window we have to invert the Y axis
+ * in order to match the OpenGL pixel coordinate system, and our
+ * offset must be matched to the window position. If we're drawing
+ * to a user-created FBO then our native pixel coordinate system
+ * works just fine, and there's no window system to worry about.
+ */
+ if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ poly.PolygonStippleYOffset =
+ (32 - (_mesa_geometric_height(ctx->DrawBuffer) & 31)) & 31;
+ }
+ }
}
+static const struct brw_tracked_state genX(polygon_stipple_offset) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_POLYGON,
+ .brw = BRW_NEW_CONTEXT,
+ },
+ .emit = genX(upload_polygon_stipple_offset),
+};
+/**
+ * Line stipple packet
+ */
static void
-genX(calculate_attr_overrides)(const struct brw_context *brw,
- struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) *attr_overrides,
- uint32_t *point_sprite_enables,
- uint32_t *urb_entry_read_length,
- uint32_t *urb_entry_read_offset)
+genX(upload_line_stipple)(struct brw_context *brw)
{
- const struct gl_context *ctx = &brw->ctx;
+ struct gl_context *ctx = &brw->ctx;
- /* _NEW_POINT */
- const struct gl_point_attrib *point = &ctx->Point;
+ if (!ctx->Line.StippleFlag)
+ return;
- /* BRW_NEW_FS_PROG_DATA */
- const struct brw_wm_prog_data *wm_prog_data =
- brw_wm_prog_data(brw->wm.base.prog_data);
- uint32_t max_source_attr = 0;
+ brw_batch_emit(brw, GENX(3DSTATE_LINE_STIPPLE), line) {
+ line.LineStipplePattern = ctx->Line.StipplePattern;
- *point_sprite_enables = 0;
+ line.LineStippleInverseRepeatCount = 1.0f / ctx->Line.StippleFactor;
+ line.LineStippleRepeatCount = ctx->Line.StippleFactor;
+ }
+}
- /* BRW_NEW_FRAGMENT_PROGRAM
- *
- * If the fragment shader reads VARYING_SLOT_LAYER, then we need to pass in
- * the full vertex header. Otherwise, we can program the SF to start
- * reading at an offset of 1 (2 varying slots) to skip unnecessary data:
- * - VARYING_SLOT_PSIZ and BRW_VARYING_SLOT_NDC on gen4-5
- * - VARYING_SLOT_{PSIZ,LAYER} and VARYING_SLOT_POS on gen6+
- */
+static const struct brw_tracked_state genX(line_stipple) = {
+ .dirty = {
+ .mesa = _NEW_LINE,
+ .brw = BRW_NEW_CONTEXT,
+ },
+ .emit = genX(upload_line_stipple),
+};
- bool fs_needs_vue_header = brw->fragment_program->info.inputs_read &
- (VARYING_BIT_LAYER | VARYING_BIT_VIEWPORT);
+/* Constant single cliprect for framebuffer object or DRI2 drawing */
+static void
+genX(upload_drawing_rect)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+ const struct gl_framebuffer *fb = ctx->DrawBuffer;
+ const unsigned int fb_width = _mesa_geometric_width(fb);
+ const unsigned int fb_height = _mesa_geometric_height(fb);
- *urb_entry_read_offset = fs_needs_vue_header ? 0 : 1;
+ brw_batch_emit(brw, GENX(3DSTATE_DRAWING_RECTANGLE), rect) {
+ rect.ClippedDrawingRectangleXMax = fb_width - 1;
+ rect.ClippedDrawingRectangleYMax = fb_height - 1;
+ }
+}
- /* From the Ivybridge PRM, Vol 2 Part 1, 3DSTATE_SBE,
- * description of dw10 Point Sprite Texture Coordinate Enable:
- *
- * "This field must be programmed to zero when non-point primitives
- * are rendered."
- *
- * The SandyBridge PRM doesn't explicitly say that point sprite enables
- * must be programmed to zero when rendering non-point primitives, but
- * the IvyBridge PRM does, and if we don't, we get garbage.
- *
- * This is not required on Haswell, as the hardware ignores this state
- * when drawing non-points -- although we do still need to be careful to
- * correctly set the attr overrides.
- *
- * _NEW_POLYGON
- * BRW_NEW_PRIMITIVE | BRW_NEW_GS_PROG_DATA | BRW_NEW_TES_PROG_DATA
- */
- bool drawing_points = brw_is_drawing_points(brw);
+static const struct brw_tracked_state genX(drawing_rect) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT,
+ },
+ .emit = genX(upload_drawing_rect),
+};
- for (int attr = 0; attr < VARYING_SLOT_MAX; attr++) {
- int input_index = wm_prog_data->urb_setup[attr];
+static uint32_t *
+genX(emit_vertex_buffer_state)(struct brw_context *brw,
+ uint32_t *dw,
+ unsigned buffer_nr,
+ struct brw_bo *bo,
+ unsigned start_offset,
+ unsigned end_offset,
+ unsigned stride,
+ unsigned step_rate)
+{
+ struct GENX(VERTEX_BUFFER_STATE) buf_state = {
+ .VertexBufferIndex = buffer_nr,
+ .BufferPitch = stride,
+ .BufferStartingAddress = vertex_bo(bo, start_offset),
+#if GEN_GEN >= 8
+ .BufferSize = end_offset - start_offset,
+#endif
- if (input_index < 0)
- continue;
+#if GEN_GEN >= 7
+ .AddressModifyEnable = true,
+#endif
- /* _NEW_POINT */
- bool point_sprite = false;
- if (drawing_points) {
- if (point->PointSprite &&
- (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) &&
- (point->CoordReplace & (1u << (attr - VARYING_SLOT_TEX0)))) {
- point_sprite = true;
- }
+#if GEN_GEN < 8
+ .BufferAccessType = step_rate ? INSTANCEDATA : VERTEXDATA,
+ .InstanceDataStepRate = step_rate,
+#if GEN_GEN >= 5
+ .EndAddress = vertex_bo(bo, end_offset - 1),
+#endif
+#endif
- if (attr == VARYING_SLOT_PNTC)
- point_sprite = true;
+#if GEN_GEN == 9
+ .VertexBufferMOCS = SKL_MOCS_WB,
+#elif GEN_GEN == 8
+ .VertexBufferMOCS = BDW_MOCS_WB,
+#elif GEN_GEN == 7
+ .VertexBufferMOCS = GEN7_MOCS_L3,
+#endif
+ };
- if (point_sprite)
- *point_sprite_enables |= (1 << input_index);
- }
+ GENX(VERTEX_BUFFER_STATE_pack)(brw, dw, &buf_state);
+ return dw + GENX(VERTEX_BUFFER_STATE_length);
+}
- /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */
- struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) attribute = { 0 };
+UNUSED static bool
+is_passthru_format(uint32_t format)
+{
+ switch (format) {
+ case ISL_FORMAT_R64_PASSTHRU:
+ case ISL_FORMAT_R64G64_PASSTHRU:
+ case ISL_FORMAT_R64G64B64_PASSTHRU:
+ case ISL_FORMAT_R64G64B64A64_PASSTHRU:
+ return true;
+ default:
+ return false;
+ }
+}
- if (!point_sprite) {
- genX(get_attr_override)(&attribute,
- &brw->vue_map_geom_out,
- *urb_entry_read_offset, attr,
- brw->ctx.VertexProgram._TwoSideEnabled,
- &max_source_attr);
- }
+UNUSED static int
+genX(uploads_needed)(uint32_t format)
+{
+ if (!is_passthru_format(format))
+ return 1;
+
+ switch (format) {
+ case ISL_FORMAT_R64_PASSTHRU:
+ case ISL_FORMAT_R64G64_PASSTHRU:
+ return 1;
+ case ISL_FORMAT_R64G64B64_PASSTHRU:
+ case ISL_FORMAT_R64G64B64A64_PASSTHRU:
+ return 2;
+ default:
+ unreachable("not reached");
+ }
+}
- /* The hardware can only do the overrides on 16 overrides at a
- * time, and the other up to 16 have to be lined up so that the
- * input index = the output index. We'll need to do some
- * tweaking to make sure that's the case.
- */
- if (input_index < 16)
- attr_overrides[input_index] = attribute;
- else
- assert(attribute.SourceAttribute == input_index);
+/*
+ * Returns the format that we are finally going to use when upload a vertex
+ * element. It will only change if we are using *64*PASSTHRU formats, as for
+ * gen < 8 they need to be splitted on two *32*FLOAT formats.
+ *
+ * @upload points in which upload we are. Valid values are [0,1]
+ */
+static uint32_t
+downsize_format_if_needed(uint32_t format,
+ int upload)
+{
+ assert(upload == 0 || upload == 1);
+
+ if (!is_passthru_format(format))
+ return format;
+
+ switch (format) {
+ case ISL_FORMAT_R64_PASSTHRU:
+ return ISL_FORMAT_R32G32_FLOAT;
+ case ISL_FORMAT_R64G64_PASSTHRU:
+ return ISL_FORMAT_R32G32B32A32_FLOAT;
+ case ISL_FORMAT_R64G64B64_PASSTHRU:
+ return !upload ? ISL_FORMAT_R32G32B32A32_FLOAT
+ : ISL_FORMAT_R32G32_FLOAT;
+ case ISL_FORMAT_R64G64B64A64_PASSTHRU:
+ return ISL_FORMAT_R32G32B32A32_FLOAT;
+ default:
+ unreachable("not reached");
}
+}
- /* From the Sandy Bridge PRM, Volume 2, Part 1, documentation for
- * 3DSTATE_SF DWord 1 bits 15:11, "Vertex URB Entry Read Length":
- *
- * "This field should be set to the minimum length required to read the
- * maximum source attribute. The maximum source attribute is indicated
- * by the maximum value of the enabled Attribute # Source Attribute if
- * Attribute Swizzle Enable is set, Number of Output Attributes-1 if
- * enable is not set.
- * read_length = ceiling((max_source_attr + 1) / 2)
- *
- * [errata] Corruption/Hang possible if length programmed larger than
- * recommended"
- *
- * Similar text exists for Ivy Bridge.
- */
- *urb_entry_read_length = DIV_ROUND_UP(max_source_attr + 1, 2);
+/*
+ * Returns the number of componentes associated with a format that is used on
+ * a 64 to 32 format split. See downsize_format()
+ */
+static int
+upload_format_size(uint32_t upload_format)
+{
+ switch (upload_format) {
+ case ISL_FORMAT_R32G32_FLOAT:
+ return 2;
+ case ISL_FORMAT_R32G32B32A32_FLOAT:
+ return 4;
+ default:
+ unreachable("not reached");
+ }
}
-/* ---------------------------------------------------------------------- */
-
static void
-genX(upload_depth_stencil_state)(struct brw_context *brw)
+genX(emit_vertices)(struct brw_context *brw)
{
- struct gl_context *ctx = &brw->ctx;
+ uint32_t *dw;
- /* _NEW_BUFFERS */
- struct intel_renderbuffer *depth_irb =
- intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH);
+ brw_prepare_vertices(brw);
+ brw_prepare_shader_draw_parameters(brw);
- /* _NEW_DEPTH */
- struct gl_depthbuffer_attrib *depth = &ctx->Depth;
+#if GEN_GEN < 6
+ brw_emit_query_begin(brw);
+#endif
- /* _NEW_STENCIL */
- struct gl_stencil_attrib *stencil = &ctx->Stencil;
- const int b = stencil->_BackFace;
+ const struct brw_vs_prog_data *vs_prog_data =
+ brw_vs_prog_data(brw->vs.base.prog_data);
#if GEN_GEN >= 8
- brw_batch_emit(brw, GENX(3DSTATE_WM_DEPTH_STENCIL), wmds) {
-#else
- uint32_t ds_offset;
- brw_state_emit(brw, GENX(DEPTH_STENCIL_STATE), 64, &ds_offset, wmds) {
-#endif
- if (depth->Test && depth_irb) {
- wmds.DepthTestEnable = true;
- wmds.DepthBufferWriteEnable = brw_depth_writes_enabled(brw);
- wmds.DepthTestFunction = intel_translate_compare_func(depth->Func);
- }
+ struct gl_context *ctx = &brw->ctx;
+ bool uses_edge_flag = (ctx->Polygon.FrontMode != GL_FILL ||
+ ctx->Polygon.BackMode != GL_FILL);
- if (stencil->_Enabled) {
- wmds.StencilTestEnable = true;
- wmds.StencilWriteMask = stencil->WriteMask[0] & 0xff;
- wmds.StencilTestMask = stencil->ValueMask[0] & 0xff;
+ if (vs_prog_data->uses_vertexid || vs_prog_data->uses_instanceid) {
+ unsigned vue = brw->vb.nr_enabled;
- wmds.StencilTestFunction =
- intel_translate_compare_func(stencil->Function[0]);
- wmds.StencilFailOp =
- intel_translate_stencil_op(stencil->FailFunc[0]);
- wmds.StencilPassDepthPassOp =
- intel_translate_stencil_op(stencil->ZPassFunc[0]);
- wmds.StencilPassDepthFailOp =
- intel_translate_stencil_op(stencil->ZFailFunc[0]);
+ /* The element for the edge flags must always be last, so we have to
+ * insert the SGVS before it in that case.
+ */
+ if (uses_edge_flag) {
+ assert(vue > 0);
+ vue--;
+ }
- wmds.StencilBufferWriteEnable = stencil->_WriteEnabled;
+ WARN_ONCE(vue >= 33,
+ "Trying to insert VID/IID past 33rd vertex element, "
+ "need to reorder the vertex attrbutes.");
- if (stencil->_TestTwoSide) {
- wmds.DoubleSidedStencilEnable = true;
- wmds.BackfaceStencilWriteMask = stencil->WriteMask[b] & 0xff;
- wmds.BackfaceStencilTestMask = stencil->ValueMask[b] & 0xff;
+ brw_batch_emit(brw, GENX(3DSTATE_VF_SGVS), vfs) {
+ if (vs_prog_data->uses_vertexid) {
+ vfs.VertexIDEnable = true;
+ vfs.VertexIDComponentNumber = 2;
+ vfs.VertexIDElementOffset = vue;
+ }
- wmds.BackfaceStencilTestFunction =
- intel_translate_compare_func(stencil->Function[b]);
- wmds.BackfaceStencilFailOp =
- intel_translate_stencil_op(stencil->FailFunc[b]);
- wmds.BackfaceStencilPassDepthPassOp =
- intel_translate_stencil_op(stencil->ZPassFunc[b]);
- wmds.BackfaceStencilPassDepthFailOp =
- intel_translate_stencil_op(stencil->ZFailFunc[b]);
+ if (vs_prog_data->uses_instanceid) {
+ vfs.InstanceIDEnable = true;
+ vfs.InstanceIDComponentNumber = 3;
+ vfs.InstanceIDElementOffset = vue;
}
+ }
-#if GEN_GEN >= 9
- wmds.StencilReferenceValue = _mesa_get_stencil_ref(ctx, 0);
- wmds.BackfaceStencilReferenceValue = _mesa_get_stencil_ref(ctx, b);
-#endif
+ brw_batch_emit(brw, GENX(3DSTATE_VF_INSTANCING), vfi) {
+ vfi.InstancingEnable = true;
+ vfi.VertexElementIndex = vue;
}
+ } else {
+ brw_batch_emit(brw, GENX(3DSTATE_VF_SGVS), vfs);
}
-#if GEN_GEN == 6
- brw_batch_emit(brw, GENX(3DSTATE_CC_STATE_POINTERS), ptr) {
- ptr.PointertoDEPTH_STENCIL_STATE = ds_offset;
- ptr.DEPTH_STENCIL_STATEChange = true;
- }
-#elif GEN_GEN == 7
- brw_batch_emit(brw, GENX(3DSTATE_DEPTH_STENCIL_STATE_POINTERS), ptr) {
- ptr.PointertoDEPTH_STENCIL_STATE = ds_offset;
+ /* Normally we don't need an element for the SGVS attribute because the
+ * 3DSTATE_VF_SGVS instruction lets you store the generated attribute in an
+ * element that is past the list in 3DSTATE_VERTEX_ELEMENTS. However if
+ * we're using draw parameters then we need an element for the those
+ * values. Additionally if there is an edge flag element then the SGVS
+ * can't be inserted past that so we need a dummy element to ensure that
+ * the edge flag is the last one.
+ */
+ const bool needs_sgvs_element = (vs_prog_data->uses_basevertex ||
+ vs_prog_data->uses_baseinstance ||
+ ((vs_prog_data->uses_instanceid ||
+ vs_prog_data->uses_vertexid)
+ && uses_edge_flag));
+#else
+ const bool needs_sgvs_element = (vs_prog_data->uses_basevertex ||
+ vs_prog_data->uses_baseinstance ||
+ vs_prog_data->uses_instanceid ||
+ vs_prog_data->uses_vertexid);
+#endif
+ unsigned nr_elements =
+ brw->vb.nr_enabled + needs_sgvs_element + vs_prog_data->uses_drawid;
+
+#if GEN_GEN < 8
+ /* If any of the formats of vb.enabled needs more that one upload, we need
+ * to add it to nr_elements
+ */
+ for (unsigned i = 0; i < brw->vb.nr_enabled; i++) {
+ struct brw_vertex_element *input = brw->vb.enabled[i];
+ uint32_t format = brw_get_vertex_surface_type(brw, input->glarray);
+
+ if (genX(uploads_needed(format)) > 1)
+ nr_elements++;
}
#endif
-}
-static const struct brw_tracked_state genX(depth_stencil_state) = {
- .dirty = {
- .mesa = _NEW_BUFFERS |
- _NEW_DEPTH |
- _NEW_STENCIL,
- .brw = BRW_NEW_BLORP |
- (GEN_GEN >= 8 ? BRW_NEW_CONTEXT
- : BRW_NEW_BATCH |
- BRW_NEW_STATE_BASE_ADDRESS),
- },
- .emit = genX(upload_depth_stencil_state),
-};
+ /* If the VS doesn't read any inputs (calculating vertex position from
+ * a state variable for some reason, for example), emit a single pad
+ * VERTEX_ELEMENT struct and bail.
+ *
+ * The stale VB state stays in place, but they don't do anything unless
+ * a VE loads from them.
+ */
+ if (nr_elements == 0) {
+ dw = brw_batch_emitn(brw, GENX(3DSTATE_VERTEX_ELEMENTS), 1 + GENX(VERTEX_ELEMENT_STATE_length));
+ struct GENX(VERTEX_ELEMENT_STATE) elem = {
+ .Valid = true,
+ .SourceElementFormat = ISL_FORMAT_R32G32B32A32_FLOAT,
+ .Component0Control = VFCOMP_STORE_0,
+ .Component1Control = VFCOMP_STORE_0,
+ .Component2Control = VFCOMP_STORE_0,
+ .Component3Control = VFCOMP_STORE_1_FP,
+ };
+ GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &elem);
+ return;
+ }
-/* ---------------------------------------------------------------------- */
+ /* Now emit 3DSTATE_VERTEX_BUFFERS and 3DSTATE_VERTEX_ELEMENTS packets. */
+ const bool uses_draw_params =
+ vs_prog_data->uses_basevertex ||
+ vs_prog_data->uses_baseinstance;
+ const unsigned nr_buffers = brw->vb.nr_buffers +
+ uses_draw_params + vs_prog_data->uses_drawid;
-static void
-genX(upload_clip_state)(struct brw_context *brw)
-{
- struct gl_context *ctx = &brw->ctx;
+ if (nr_buffers) {
+#if GEN_GEN >= 6
+ assert(nr_buffers <= 33);
+#else
+ assert(nr_buffers <= 17);
+#endif
+ assert(nr_buffers <= (GEN_GEN >= 6 ? 33 : 17));
- /* _NEW_BUFFERS */
- struct gl_framebuffer *fb = ctx->DrawBuffer;
+ dw = brw_batch_emitn(brw, GENX(3DSTATE_VERTEX_BUFFERS),
+ 1 + GENX(VERTEX_BUFFER_STATE_length) * nr_buffers);
- /* BRW_NEW_FS_PROG_DATA */
- struct brw_wm_prog_data *wm_prog_data =
- brw_wm_prog_data(brw->wm.base.prog_data);
+ for (unsigned i = 0; i < brw->vb.nr_buffers; i++) {
+ const struct brw_vertex_buffer *buffer = &brw->vb.buffers[i];
+ /* Prior to Haswell and Bay Trail we have to use 4-component formats
+ * to fake 3-component ones. In particular, we do this for
+ * half-float and 8 and 16-bit integer formats. This means that the
+ * vertex element may poke over the end of the buffer by 2 bytes.
+ */
+ unsigned padding =
+ (GEN_GEN <= 7 && !brw->is_baytrail && !brw->is_haswell) * 2;
+ dw = genX(emit_vertex_buffer_state)(brw, dw, i, buffer->bo,
+ buffer->offset,
+ buffer->offset + buffer->size + padding,
+ buffer->stride,
+ buffer->step_rate);
+ }
- brw_batch_emit(brw, GENX(3DSTATE_CLIP), clip) {
- clip.StatisticsEnable = !brw->meta_in_progress;
+ if (uses_draw_params) {
+ dw = genX(emit_vertex_buffer_state)(brw, dw, brw->vb.nr_buffers,
+ brw->draw.draw_params_bo,
+ brw->draw.draw_params_offset,
+ brw->draw.draw_params_bo->size,
+ 0 /* stride */,
+ 0 /* step rate */);
+ }
- if (wm_prog_data->barycentric_interp_modes &
- BRW_BARYCENTRIC_NONPERSPECTIVE_BITS)
- clip.NonPerspectiveBarycentricEnable = true;
+ if (vs_prog_data->uses_drawid) {
+ dw = genX(emit_vertex_buffer_state)(brw, dw, brw->vb.nr_buffers + 1,
+ brw->draw.draw_id_bo,
+ brw->draw.draw_id_offset,
+ brw->draw.draw_id_bo->size,
+ 0 /* stride */,
+ 0 /* step rate */);
+ }
+ }
-#if GEN_GEN >= 7
- clip.EarlyCullEnable = true;
+ /* The hardware allows one more VERTEX_ELEMENTS than VERTEX_BUFFERS,
+ * presumably for VertexID/InstanceID.
+ */
+#if GEN_GEN >= 6
+ assert(nr_elements <= 34);
+ struct brw_vertex_element *gen6_edgeflag_input = NULL;
+#else
+ assert(nr_elements <= 18);
#endif
-#if GEN_GEN == 7
- clip.FrontWinding = ctx->Polygon._FrontBit == _mesa_is_user_fbo(fb);
+ dw = brw_batch_emitn(brw, GENX(3DSTATE_VERTEX_ELEMENTS),
+ 1 + GENX(VERTEX_ELEMENT_STATE_length) * nr_elements);
+ unsigned i;
+ for (i = 0; i < brw->vb.nr_enabled; i++) {
+ struct brw_vertex_element *input = brw->vb.enabled[i];
+ uint32_t format = brw_get_vertex_surface_type(brw, input->glarray);
+ uint32_t comp0 = VFCOMP_STORE_SRC;
+ uint32_t comp1 = VFCOMP_STORE_SRC;
+ uint32_t comp2 = VFCOMP_STORE_SRC;
+ uint32_t comp3 = VFCOMP_STORE_SRC;
+ unsigned num_uploads = 1;
- if (ctx->Polygon.CullFlag) {
- switch (ctx->Polygon.CullFaceMode) {
- case GL_FRONT:
- clip.CullMode = CULLMODE_FRONT;
- break;
- case GL_BACK:
- clip.CullMode = CULLMODE_BACK;
- break;
- case GL_FRONT_AND_BACK:
- clip.CullMode = CULLMODE_BOTH;
- break;
- default:
- unreachable("Should not get here: invalid CullFlag");
- }
- } else {
- clip.CullMode = CULLMODE_NONE;
+#if GEN_GEN >= 8
+ /* From the BDW PRM, Volume 2d, page 588 (VERTEX_ELEMENT_STATE):
+ * "Any SourceElementFormat of *64*_PASSTHRU cannot be used with an
+ * element which has edge flag enabled."
+ */
+ assert(!(is_passthru_format(format) && uses_edge_flag));
+#endif
+
+ /* The gen4 driver expects edgeflag to come in as a float, and passes
+ * that float on to the tests in the clipper. Mesa's current vertex
+ * attribute value for EdgeFlag is stored as a float, which works out.
+ * glEdgeFlagPointer, on the other hand, gives us an unnormalized
+ * integer ubyte. Just rewrite that to convert to a float.
+ *
+ * Gen6+ passes edgeflag as sideband along with the vertex, instead
+ * of in the VUE. We have to upload it sideband as the last vertex
+ * element according to the B-Spec.
+ */
+#if GEN_GEN >= 6
+ if (input == &brw->vb.inputs[VERT_ATTRIB_EDGEFLAG]) {
+ gen6_edgeflag_input = input;
+ continue;
}
#endif
#if GEN_GEN < 8
- clip.UserClipDistanceCullTestEnableBitmask =
- brw_vue_prog_data(brw->vs.base.prog_data)->cull_distance_mask;
+ num_uploads = genX(uploads_needed(format));
+#endif
- clip.ViewportZClipTestEnable = !ctx->Transform.DepthClamp;
+ for (unsigned c = 0; c < num_uploads; c++) {
+ uint32_t upload_format = GEN_GEN >= 8 ? format :
+ downsize_format_if_needed(format, c);
+ /* If we need more that one upload, the offset stride would be 128
+ * bits (16 bytes), as for previous uploads we are using the full
+ * entry. */
+ unsigned int offset = input->offset + c * 16;
+ int size = input->glarray->Size;
+
+ if (GEN_GEN < 8 && is_passthru_format(format))
+ size = upload_format_size(upload_format);
+
+ switch (size) {
+ case 0: comp0 = VFCOMP_STORE_0;
+ case 1: comp1 = VFCOMP_STORE_0;
+ case 2: comp2 = VFCOMP_STORE_0;
+ case 3:
+ if (GEN_GEN >= 8 && input->glarray->Doubles) {
+ comp3 = VFCOMP_STORE_0;
+ } else if (input->glarray->Integer) {
+ comp3 = VFCOMP_STORE_1_INT;
+ } else {
+ comp3 = VFCOMP_STORE_1_FP;
+ }
+
+ break;
+ }
+
+#if GEN_GEN >= 8
+ /* From the BDW PRM, Volume 2d, page 586 (VERTEX_ELEMENT_STATE):
+ *
+ * "When SourceElementFormat is set to one of the *64*_PASSTHRU
+ * formats, 64-bit components are stored in the URB without any
+ * conversion. In this case, vertex elements must be written as 128
+ * or 256 bits, with VFCOMP_STORE_0 being used to pad the output as
+ * required. E.g., if R64_PASSTHRU is used to copy a 64-bit Red
+ * component into the URB, Component 1 must be specified as
+ * VFCOMP_STORE_0 (with Components 2,3 set to VFCOMP_NOSTORE) in
+ * order to output a 128-bit vertex element, or Components 1-3 must
+ * be specified as VFCOMP_STORE_0 in order to output a 256-bit vertex
+ * element. Likewise, use of R64G64B64_PASSTHRU requires Component 3
+ * to be specified as VFCOMP_STORE_0 in order to output a 256-bit
+ * vertex element."
+ */
+ if (input->glarray->Doubles && !input->is_dual_slot) {
+ /* Store vertex elements which correspond to double and dvec2 vertex
+ * shader inputs as 128-bit vertex elements, instead of 256-bits.
+ */
+ comp2 = VFCOMP_NOSTORE;
+ comp3 = VFCOMP_NOSTORE;
+ }
#endif
- /* _NEW_LIGHT */
- if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) {
- clip.TriangleStripListProvokingVertexSelect = 0;
- clip.TriangleFanProvokingVertexSelect = 1;
- clip.LineStripListProvokingVertexSelect = 0;
- } else {
- clip.TriangleStripListProvokingVertexSelect = 2;
- clip.TriangleFanProvokingVertexSelect = 2;
- clip.LineStripListProvokingVertexSelect = 1;
+ struct GENX(VERTEX_ELEMENT_STATE) elem_state = {
+ .VertexBufferIndex = input->buffer,
+ .Valid = true,
+ .SourceElementFormat = upload_format,
+ .SourceElementOffset = offset,
+ .Component0Control = comp0,
+ .Component1Control = comp1,
+ .Component2Control = comp2,
+ .Component3Control = comp3,
+#if GEN_GEN < 5
+ .DestinationElementOffset = i * 4,
+#endif
+ };
+
+ GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &elem_state);
+ dw += GENX(VERTEX_ELEMENT_STATE_length);
}
+ }
- /* _NEW_TRANSFORM */
- clip.UserClipDistanceClipTestEnableBitmask =
- ctx->Transform.ClipPlanesEnabled;
+ if (needs_sgvs_element) {
+ struct GENX(VERTEX_ELEMENT_STATE) elem_state = {
+ .Valid = true,
+ .Component0Control = VFCOMP_STORE_0,
+ .Component1Control = VFCOMP_STORE_0,
+ .Component2Control = VFCOMP_STORE_0,
+ .Component3Control = VFCOMP_STORE_0,
+#if GEN_GEN < 5
+ .DestinationElementOffset = i * 4,
+#endif
+ };
#if GEN_GEN >= 8
- clip.ForceUserClipDistanceClipTestEnableBitmask = true;
-#endif
+ if (vs_prog_data->uses_basevertex ||
+ vs_prog_data->uses_baseinstance) {
+ elem_state.VertexBufferIndex = brw->vb.nr_buffers;
+ elem_state.SourceElementFormat = ISL_FORMAT_R32G32_UINT;
+ elem_state.Component0Control = VFCOMP_STORE_SRC;
+ elem_state.Component1Control = VFCOMP_STORE_SRC;
+ }
+#else
+ elem_state.VertexBufferIndex = brw->vb.nr_buffers;
+ elem_state.SourceElementFormat = ISL_FORMAT_R32G32_UINT;
+ if (vs_prog_data->uses_basevertex)
+ elem_state.Component0Control = VFCOMP_STORE_SRC;
- if (ctx->Transform.ClipDepthMode == GL_ZERO_TO_ONE)
- clip.APIMode = APIMODE_D3D;
- else
- clip.APIMode = APIMODE_OGL;
+ if (vs_prog_data->uses_baseinstance)
+ elem_state.Component1Control = VFCOMP_STORE_SRC;
- clip.GuardbandClipTestEnable = true;
+ if (vs_prog_data->uses_vertexid)
+ elem_state.Component2Control = VFCOMP_STORE_VID;
- /* BRW_NEW_VIEWPORT_COUNT */
- const unsigned viewport_count = brw->clip.viewport_count;
+ if (vs_prog_data->uses_instanceid)
+ elem_state.Component3Control = VFCOMP_STORE_IID;
+#endif
- if (ctx->RasterDiscard) {
- clip.ClipMode = CLIPMODE_REJECT_ALL;
-#if GEN_GEN == 6
- perf_debug("Rasterizer discard is currently implemented via the "
- "clipper; having the GS not write primitives would "
- "likely be faster.\n");
+ GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &elem_state);
+ dw += GENX(VERTEX_ELEMENT_STATE_length);
+ }
+
+ if (vs_prog_data->uses_drawid) {
+ struct GENX(VERTEX_ELEMENT_STATE) elem_state = {
+ .Valid = true,
+ .VertexBufferIndex = brw->vb.nr_buffers + 1,
+ .SourceElementFormat = ISL_FORMAT_R32_UINT,
+ .Component0Control = VFCOMP_STORE_SRC,
+ .Component1Control = VFCOMP_STORE_0,
+ .Component2Control = VFCOMP_STORE_0,
+ .Component3Control = VFCOMP_STORE_0,
+#if GEN_GEN < 5
+ .DestinationElementOffset = i * 4,
#endif
- } else {
- clip.ClipMode = CLIPMODE_NORMAL;
- }
+ };
- clip.ClipEnable = brw->primitive != _3DPRIM_RECTLIST;
+ GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &elem_state);
+ dw += GENX(VERTEX_ELEMENT_STATE_length);
+ }
- /* _NEW_POLYGON,
- * BRW_NEW_GEOMETRY_PROGRAM | BRW_NEW_TES_PROG_DATA | BRW_NEW_PRIMITIVE
+#if GEN_GEN >= 6
+ if (gen6_edgeflag_input) {
+ uint32_t format =
+ brw_get_vertex_surface_type(brw, gen6_edgeflag_input->glarray);
+
+ struct GENX(VERTEX_ELEMENT_STATE) elem_state = {
+ .Valid = true,
+ .VertexBufferIndex = gen6_edgeflag_input->buffer,
+ .EdgeFlagEnable = true,
+ .SourceElementFormat = format,
+ .SourceElementOffset = gen6_edgeflag_input->offset,
+ .Component0Control = VFCOMP_STORE_SRC,
+ .Component1Control = VFCOMP_STORE_0,
+ .Component2Control = VFCOMP_STORE_0,
+ .Component3Control = VFCOMP_STORE_0,
+ };
+
+ GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &elem_state);
+ dw += GENX(VERTEX_ELEMENT_STATE_length);
+ }
+#endif
+
+#if GEN_GEN >= 8
+ for (unsigned i = 0, j = 0; i < brw->vb.nr_enabled; i++) {
+ const struct brw_vertex_element *input = brw->vb.enabled[i];
+ const struct brw_vertex_buffer *buffer = &brw->vb.buffers[input->buffer];
+ unsigned element_index;
+
+ /* The edge flag element is reordered to be the last one in the code
+ * above so we need to compensate for that in the element indices used
+ * below.
*/
- if (!brw_is_drawing_points(brw) && !brw_is_drawing_lines(brw))
- clip.ViewportXYClipTestEnable = true;
+ if (input == gen6_edgeflag_input)
+ element_index = nr_elements - 1;
+ else
+ element_index = j++;
- clip.MinimumPointWidth = 0.125;
- clip.MaximumPointWidth = 255.875;
- clip.MaximumVPIndex = viewport_count - 1;
- if (_mesa_geometric_layers(fb) == 0)
- clip.ForceZeroRTAIndexEnable = true;
+ brw_batch_emit(brw, GENX(3DSTATE_VF_INSTANCING), vfi) {
+ vfi.VertexElementIndex = element_index;
+ vfi.InstancingEnable = buffer->step_rate != 0;
+ vfi.InstanceDataStepRate = buffer->step_rate;
+ }
+ }
+
+ if (vs_prog_data->uses_drawid) {
+ const unsigned element = brw->vb.nr_enabled + needs_sgvs_element;
+
+ brw_batch_emit(brw, GENX(3DSTATE_VF_INSTANCING), vfi) {
+ vfi.VertexElementIndex = element;
+ }
}
+#endif
}
-static const struct brw_tracked_state genX(clip_state) = {
+static const struct brw_tracked_state genX(vertices) = {
.dirty = {
- .mesa = _NEW_BUFFERS |
- _NEW_LIGHT |
- _NEW_POLYGON |
- _NEW_TRANSFORM,
- .brw = BRW_NEW_BLORP |
- BRW_NEW_CONTEXT |
- BRW_NEW_FS_PROG_DATA |
- BRW_NEW_GS_PROG_DATA |
- BRW_NEW_VS_PROG_DATA |
- BRW_NEW_META_IN_PROGRESS |
- BRW_NEW_PRIMITIVE |
- BRW_NEW_RASTERIZER_DISCARD |
- BRW_NEW_TES_PROG_DATA |
- BRW_NEW_VIEWPORT_COUNT,
+ .mesa = _NEW_POLYGON,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_VERTICES |
+ BRW_NEW_VS_PROG_DATA,
},
- .emit = genX(upload_clip_state),
+ .emit = genX(emit_vertices),
};
-/* ---------------------------------------------------------------------- */
+#if GEN_IS_HASWELL || GEN_GEN >= 8
+static void
+genX(upload_cut_index)(struct brw_context *brw)
+{
+ const struct gl_context *ctx = &brw->ctx;
+
+ brw_batch_emit(brw, GENX(3DSTATE_VF), vf) {
+ if (ctx->Array._PrimitiveRestart && brw->ib.ib) {
+ vf.IndexedDrawCutIndexEnable = true;
+ vf.CutIndex = _mesa_primitive_restart_index(ctx, brw->ib.index_size);
+ }
+ }
+}
+
+const struct brw_tracked_state genX(cut_index) = {
+ .dirty = {
+ .mesa = _NEW_TRANSFORM,
+ .brw = BRW_NEW_INDEX_BUFFER,
+ },
+ .emit = genX(upload_cut_index),
+};
+#endif
+
+#if GEN_GEN >= 6
+/**
+ * Determine the appropriate attribute override value to store into the
+ * 3DSTATE_SF structure for a given fragment shader attribute. The attribute
+ * override value contains two pieces of information: the location of the
+ * attribute in the VUE (relative to urb_entry_read_offset, see below), and a
+ * flag indicating whether to "swizzle" the attribute based on the direction
+ * the triangle is facing.
+ *
+ * If an attribute is "swizzled", then the given VUE location is used for
+ * front-facing triangles, and the VUE location that immediately follows is
+ * used for back-facing triangles. We use this to implement the mapping from
+ * gl_FrontColor/gl_BackColor to gl_Color.
+ *
+ * urb_entry_read_offset is the offset into the VUE at which the SF unit is
+ * being instructed to begin reading attribute data. It can be set to a
+ * nonzero value to prevent the SF unit from wasting time reading elements of
+ * the VUE that are not needed by the fragment shader. It is measured in
+ * 256-bit increments.
+ */
+static void
+genX(get_attr_override)(struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) *attr,
+ const struct brw_vue_map *vue_map,
+ int urb_entry_read_offset, int fs_attr,
+ bool two_side_color, uint32_t *max_source_attr)
+{
+ /* Find the VUE slot for this attribute. */
+ int slot = vue_map->varying_to_slot[fs_attr];
+
+ /* Viewport and Layer are stored in the VUE header. We need to override
+ * them to zero if earlier stages didn't write them, as GL requires that
+ * they read back as zero when not explicitly set.
+ */
+ if (fs_attr == VARYING_SLOT_VIEWPORT || fs_attr == VARYING_SLOT_LAYER) {
+ attr->ComponentOverrideX = true;
+ attr->ComponentOverrideW = true;
+ attr->ConstantSource = CONST_0000;
+
+ if (!(vue_map->slots_valid & VARYING_BIT_LAYER))
+ attr->ComponentOverrideY = true;
+ if (!(vue_map->slots_valid & VARYING_BIT_VIEWPORT))
+ attr->ComponentOverrideZ = true;
+
+ return;
+ }
+
+ /* If there was only a back color written but not front, use back
+ * as the color instead of undefined
+ */
+ if (slot == -1 && fs_attr == VARYING_SLOT_COL0)
+ slot = vue_map->varying_to_slot[VARYING_SLOT_BFC0];
+ if (slot == -1 && fs_attr == VARYING_SLOT_COL1)
+ slot = vue_map->varying_to_slot[VARYING_SLOT_BFC1];
+
+ if (slot == -1) {
+ /* This attribute does not exist in the VUE--that means that the vertex
+ * shader did not write to it. This means that either:
+ *
+ * (a) This attribute is a texture coordinate, and it is going to be
+ * replaced with point coordinates (as a consequence of a call to
+ * glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE)), so the
+ * hardware will ignore whatever attribute override we supply.
+ *
+ * (b) This attribute is read by the fragment shader but not written by
+ * the vertex shader, so its value is undefined. Therefore the
+ * attribute override we supply doesn't matter.
+ *
+ * (c) This attribute is gl_PrimitiveID, and it wasn't written by the
+ * previous shader stage.
+ *
+ * Note that we don't have to worry about the cases where the attribute
+ * is gl_PointCoord or is undergoing point sprite coordinate
+ * replacement, because in those cases, this function isn't called.
+ *
+ * In case (c), we need to program the attribute overrides so that the
+ * primitive ID will be stored in this slot. In every other case, the
+ * attribute override we supply doesn't matter. So just go ahead and
+ * program primitive ID in every case.
+ */
+ attr->ComponentOverrideW = true;
+ attr->ComponentOverrideX = true;
+ attr->ComponentOverrideY = true;
+ attr->ComponentOverrideZ = true;
+ attr->ConstantSource = PRIM_ID;
+ return;
+ }
+
+ /* Compute the location of the attribute relative to urb_entry_read_offset.
+ * Each increment of urb_entry_read_offset represents a 256-bit value, so
+ * it counts for two 128-bit VUE slots.
+ */
+ int source_attr = slot - 2 * urb_entry_read_offset;
+ assert(source_attr >= 0 && source_attr < 32);
+
+ /* If we are doing two-sided color, and the VUE slot following this one
+ * represents a back-facing color, then we need to instruct the SF unit to
+ * do back-facing swizzling.
+ */
+ bool swizzling = two_side_color &&
+ ((vue_map->slot_to_varying[slot] == VARYING_SLOT_COL0 &&
+ vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC0) ||
+ (vue_map->slot_to_varying[slot] == VARYING_SLOT_COL1 &&
+ vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC1));
+
+ /* Update max_source_attr. If swizzling, the SF will read this slot + 1. */
+ if (*max_source_attr < source_attr + swizzling)
+ *max_source_attr = source_attr + swizzling;
+
+ attr->SourceAttribute = source_attr;
+ if (swizzling)
+ attr->SwizzleSelect = INPUTATTR_FACING;
+}
+
+
+static void
+genX(calculate_attr_overrides)(const struct brw_context *brw,
+ struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) *attr_overrides,
+ uint32_t *point_sprite_enables,
+ uint32_t *urb_entry_read_length,
+ uint32_t *urb_entry_read_offset)
+{
+ const struct gl_context *ctx = &brw->ctx;
+
+ /* _NEW_POINT */
+ const struct gl_point_attrib *point = &ctx->Point;
+
+ /* BRW_NEW_FS_PROG_DATA */
+ const struct brw_wm_prog_data *wm_prog_data =
+ brw_wm_prog_data(brw->wm.base.prog_data);
+ uint32_t max_source_attr = 0;
+
+ *point_sprite_enables = 0;
+
+ /* BRW_NEW_FRAGMENT_PROGRAM
+ *
+ * If the fragment shader reads VARYING_SLOT_LAYER, then we need to pass in
+ * the full vertex header. Otherwise, we can program the SF to start
+ * reading at an offset of 1 (2 varying slots) to skip unnecessary data:
+ * - VARYING_SLOT_PSIZ and BRW_VARYING_SLOT_NDC on gen4-5
+ * - VARYING_SLOT_{PSIZ,LAYER} and VARYING_SLOT_POS on gen6+
+ */
+
+ bool fs_needs_vue_header = brw->fragment_program->info.inputs_read &
+ (VARYING_BIT_LAYER | VARYING_BIT_VIEWPORT);
+
+ *urb_entry_read_offset = fs_needs_vue_header ? 0 : 1;
+
+ /* From the Ivybridge PRM, Vol 2 Part 1, 3DSTATE_SBE,
+ * description of dw10 Point Sprite Texture Coordinate Enable:
+ *
+ * "This field must be programmed to zero when non-point primitives
+ * are rendered."
+ *
+ * The SandyBridge PRM doesn't explicitly say that point sprite enables
+ * must be programmed to zero when rendering non-point primitives, but
+ * the IvyBridge PRM does, and if we don't, we get garbage.
+ *
+ * This is not required on Haswell, as the hardware ignores this state
+ * when drawing non-points -- although we do still need to be careful to
+ * correctly set the attr overrides.
+ *
+ * _NEW_POLYGON
+ * BRW_NEW_PRIMITIVE | BRW_NEW_GS_PROG_DATA | BRW_NEW_TES_PROG_DATA
+ */
+ bool drawing_points = brw_is_drawing_points(brw);
+
+ for (int attr = 0; attr < VARYING_SLOT_MAX; attr++) {
+ int input_index = wm_prog_data->urb_setup[attr];
+
+ if (input_index < 0)
+ continue;
+
+ /* _NEW_POINT */
+ bool point_sprite = false;
+ if (drawing_points) {
+ if (point->PointSprite &&
+ (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) &&
+ (point->CoordReplace & (1u << (attr - VARYING_SLOT_TEX0)))) {
+ point_sprite = true;
+ }
+
+ if (attr == VARYING_SLOT_PNTC)
+ point_sprite = true;
+
+ if (point_sprite)
+ *point_sprite_enables |= (1 << input_index);
+ }
+
+ /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */
+ struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) attribute = { 0 };
+
+ if (!point_sprite) {
+ genX(get_attr_override)(&attribute,
+ &brw->vue_map_geom_out,
+ *urb_entry_read_offset, attr,
+ brw->ctx.VertexProgram._TwoSideEnabled,
+ &max_source_attr);
+ }
+
+ /* The hardware can only do the overrides on 16 overrides at a
+ * time, and the other up to 16 have to be lined up so that the
+ * input index = the output index. We'll need to do some
+ * tweaking to make sure that's the case.
+ */
+ if (input_index < 16)
+ attr_overrides[input_index] = attribute;
+ else
+ assert(attribute.SourceAttribute == input_index);
+ }
+
+ /* From the Sandy Bridge PRM, Volume 2, Part 1, documentation for
+ * 3DSTATE_SF DWord 1 bits 15:11, "Vertex URB Entry Read Length":
+ *
+ * "This field should be set to the minimum length required to read the
+ * maximum source attribute. The maximum source attribute is indicated
+ * by the maximum value of the enabled Attribute # Source Attribute if
+ * Attribute Swizzle Enable is set, Number of Output Attributes-1 if
+ * enable is not set.
+ * read_length = ceiling((max_source_attr + 1) / 2)
+ *
+ * [errata] Corruption/Hang possible if length programmed larger than
+ * recommended"
+ *
+ * Similar text exists for Ivy Bridge.
+ */
+ *urb_entry_read_length = DIV_ROUND_UP(max_source_attr + 1, 2);
+}
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN >= 6
+static void
+genX(upload_depth_stencil_state)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ /* _NEW_BUFFERS */
+ struct intel_renderbuffer *depth_irb =
+ intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_DEPTH);
+
+ /* _NEW_DEPTH */
+ struct gl_depthbuffer_attrib *depth = &ctx->Depth;
+
+ /* _NEW_STENCIL */
+ struct gl_stencil_attrib *stencil = &ctx->Stencil;
+ const int b = stencil->_BackFace;
+
+#if GEN_GEN >= 8
+ brw_batch_emit(brw, GENX(3DSTATE_WM_DEPTH_STENCIL), wmds) {
+#else
+ uint32_t ds_offset;
+ brw_state_emit(brw, GENX(DEPTH_STENCIL_STATE), 64, &ds_offset, wmds) {
+#endif
+ if (depth->Test && depth_irb) {
+ wmds.DepthTestEnable = true;
+ wmds.DepthBufferWriteEnable = brw_depth_writes_enabled(brw);
+ wmds.DepthTestFunction = intel_translate_compare_func(depth->Func);
+ }
+
+ if (stencil->_Enabled) {
+ wmds.StencilTestEnable = true;
+ wmds.StencilWriteMask = stencil->WriteMask[0] & 0xff;
+ wmds.StencilTestMask = stencil->ValueMask[0] & 0xff;
+
+ wmds.StencilTestFunction =
+ intel_translate_compare_func(stencil->Function[0]);
+ wmds.StencilFailOp =
+ intel_translate_stencil_op(stencil->FailFunc[0]);
+ wmds.StencilPassDepthPassOp =
+ intel_translate_stencil_op(stencil->ZPassFunc[0]);
+ wmds.StencilPassDepthFailOp =
+ intel_translate_stencil_op(stencil->ZFailFunc[0]);
+
+ wmds.StencilBufferWriteEnable = stencil->_WriteEnabled;
+
+ if (stencil->_TestTwoSide) {
+ wmds.DoubleSidedStencilEnable = true;
+ wmds.BackfaceStencilWriteMask = stencil->WriteMask[b] & 0xff;
+ wmds.BackfaceStencilTestMask = stencil->ValueMask[b] & 0xff;
+
+ wmds.BackfaceStencilTestFunction =
+ intel_translate_compare_func(stencil->Function[b]);
+ wmds.BackfaceStencilFailOp =
+ intel_translate_stencil_op(stencil->FailFunc[b]);
+ wmds.BackfaceStencilPassDepthPassOp =
+ intel_translate_stencil_op(stencil->ZPassFunc[b]);
+ wmds.BackfaceStencilPassDepthFailOp =
+ intel_translate_stencil_op(stencil->ZFailFunc[b]);
+ }
+
+#if GEN_GEN >= 9
+ wmds.StencilReferenceValue = _mesa_get_stencil_ref(ctx, 0);
+ wmds.BackfaceStencilReferenceValue = _mesa_get_stencil_ref(ctx, b);
+#endif
+ }
+ }
+
+#if GEN_GEN == 6
+ brw_batch_emit(brw, GENX(3DSTATE_CC_STATE_POINTERS), ptr) {
+ ptr.PointertoDEPTH_STENCIL_STATE = ds_offset;
+ ptr.DEPTH_STENCIL_STATEChange = true;
+ }
+#elif GEN_GEN == 7
+ brw_batch_emit(brw, GENX(3DSTATE_DEPTH_STENCIL_STATE_POINTERS), ptr) {
+ ptr.PointertoDEPTH_STENCIL_STATE = ds_offset;
+ }
+#endif
+}
+
+static const struct brw_tracked_state genX(depth_stencil_state) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_DEPTH |
+ _NEW_STENCIL,
+ .brw = BRW_NEW_BLORP |
+ (GEN_GEN >= 8 ? BRW_NEW_CONTEXT
+ : BRW_NEW_BATCH |
+ BRW_NEW_STATE_BASE_ADDRESS),
+ },
+ .emit = genX(upload_depth_stencil_state),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN >= 6
+static void
+genX(upload_clip_state)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ /* _NEW_BUFFERS */
+ struct gl_framebuffer *fb = ctx->DrawBuffer;
+
+ /* BRW_NEW_FS_PROG_DATA */
+ struct brw_wm_prog_data *wm_prog_data =
+ brw_wm_prog_data(brw->wm.base.prog_data);
+
+ brw_batch_emit(brw, GENX(3DSTATE_CLIP), clip) {
+ clip.StatisticsEnable = !brw->meta_in_progress;
+
+ if (wm_prog_data->barycentric_interp_modes &
+ BRW_BARYCENTRIC_NONPERSPECTIVE_BITS)
+ clip.NonPerspectiveBarycentricEnable = true;
+
+#if GEN_GEN >= 7
+ clip.EarlyCullEnable = true;
+#endif
+
+#if GEN_GEN == 7
+ clip.FrontWinding = ctx->Polygon._FrontBit == _mesa_is_user_fbo(fb);
+
+ if (ctx->Polygon.CullFlag) {
+ switch (ctx->Polygon.CullFaceMode) {
+ case GL_FRONT:
+ clip.CullMode = CULLMODE_FRONT;
+ break;
+ case GL_BACK:
+ clip.CullMode = CULLMODE_BACK;
+ break;
+ case GL_FRONT_AND_BACK:
+ clip.CullMode = CULLMODE_BOTH;
+ break;
+ default:
+ unreachable("Should not get here: invalid CullFlag");
+ }
+ } else {
+ clip.CullMode = CULLMODE_NONE;
+ }
+#endif
+
+#if GEN_GEN < 8
+ clip.UserClipDistanceCullTestEnableBitmask =
+ brw_vue_prog_data(brw->vs.base.prog_data)->cull_distance_mask;
+
+ clip.ViewportZClipTestEnable = !ctx->Transform.DepthClamp;
+#endif
+
+ /* _NEW_LIGHT */
+ if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION) {
+ clip.TriangleStripListProvokingVertexSelect = 0;
+ clip.TriangleFanProvokingVertexSelect = 1;
+ clip.LineStripListProvokingVertexSelect = 0;
+ } else {
+ clip.TriangleStripListProvokingVertexSelect = 2;
+ clip.TriangleFanProvokingVertexSelect = 2;
+ clip.LineStripListProvokingVertexSelect = 1;
+ }
+
+ /* _NEW_TRANSFORM */
+ clip.UserClipDistanceClipTestEnableBitmask =
+ ctx->Transform.ClipPlanesEnabled;
+
+#if GEN_GEN >= 8
+ clip.ForceUserClipDistanceClipTestEnableBitmask = true;
+#endif
+
+ if (ctx->Transform.ClipDepthMode == GL_ZERO_TO_ONE)
+ clip.APIMode = APIMODE_D3D;
+ else
+ clip.APIMode = APIMODE_OGL;
+
+ clip.GuardbandClipTestEnable = true;
+
+ /* BRW_NEW_VIEWPORT_COUNT */
+ const unsigned viewport_count = brw->clip.viewport_count;
+
+ if (ctx->RasterDiscard) {
+ clip.ClipMode = CLIPMODE_REJECT_ALL;
+#if GEN_GEN == 6
+ perf_debug("Rasterizer discard is currently implemented via the "
+ "clipper; having the GS not write primitives would "
+ "likely be faster.\n");
+#endif
+ } else {
+ clip.ClipMode = CLIPMODE_NORMAL;
+ }
+
+ clip.ClipEnable = brw->primitive != _3DPRIM_RECTLIST;
+
+ /* _NEW_POLYGON,
+ * BRW_NEW_GEOMETRY_PROGRAM | BRW_NEW_TES_PROG_DATA | BRW_NEW_PRIMITIVE
+ */
+ if (!brw_is_drawing_points(brw) && !brw_is_drawing_lines(brw))
+ clip.ViewportXYClipTestEnable = true;
+
+ clip.MinimumPointWidth = 0.125;
+ clip.MaximumPointWidth = 255.875;
+ clip.MaximumVPIndex = viewport_count - 1;
+ if (_mesa_geometric_layers(fb) == 0)
+ clip.ForceZeroRTAIndexEnable = true;
+ }
+}
+
+static const struct brw_tracked_state genX(clip_state) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_LIGHT |
+ _NEW_POLYGON |
+ _NEW_TRANSFORM,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_FS_PROG_DATA |
+ BRW_NEW_GS_PROG_DATA |
+ BRW_NEW_VS_PROG_DATA |
+ BRW_NEW_META_IN_PROGRESS |
+ BRW_NEW_PRIMITIVE |
+ BRW_NEW_RASTERIZER_DISCARD |
+ BRW_NEW_TES_PROG_DATA |
+ BRW_NEW_VIEWPORT_COUNT,
+ },
+ .emit = genX(upload_clip_state),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN >= 6
+static void
+genX(upload_sf)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+ float point_size;
+
+#if GEN_GEN <= 7
+ /* _NEW_BUFFERS */
+ bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
+ const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
+#endif
+
+ brw_batch_emit(brw, GENX(3DSTATE_SF), sf) {
+ sf.StatisticsEnable = true;
+ sf.ViewportTransformEnable = brw->sf.viewport_transform_enable;
+
+#if GEN_GEN == 7
+ /* _NEW_BUFFERS */
+ sf.DepthBufferSurfaceFormat = brw_depthbuffer_format(brw);
+#endif
+
+#if GEN_GEN <= 7
+ /* _NEW_POLYGON */
+ sf.FrontWinding = ctx->Polygon._FrontBit == render_to_fbo;
+ sf.GlobalDepthOffsetEnableSolid = ctx->Polygon.OffsetFill;
+ sf.GlobalDepthOffsetEnableWireframe = ctx->Polygon.OffsetLine;
+ sf.GlobalDepthOffsetEnablePoint = ctx->Polygon.OffsetPoint;
+
+ switch (ctx->Polygon.FrontMode) {
+ case GL_FILL:
+ sf.FrontFaceFillMode = FILL_MODE_SOLID;
+ break;
+ case GL_LINE:
+ sf.FrontFaceFillMode = FILL_MODE_WIREFRAME;
+ break;
+ case GL_POINT:
+ sf.FrontFaceFillMode = FILL_MODE_POINT;
+ break;
+ default:
+ unreachable("not reached");
+ }
+
+ switch (ctx->Polygon.BackMode) {
+ case GL_FILL:
+ sf.BackFaceFillMode = FILL_MODE_SOLID;
+ break;
+ case GL_LINE:
+ sf.BackFaceFillMode = FILL_MODE_WIREFRAME;
+ break;
+ case GL_POINT:
+ sf.BackFaceFillMode = FILL_MODE_POINT;
+ break;
+ default:
+ unreachable("not reached");
+ }
+
+ sf.ScissorRectangleEnable = true;
+
+ if (ctx->Polygon.CullFlag) {
+ switch (ctx->Polygon.CullFaceMode) {
+ case GL_FRONT:
+ sf.CullMode = CULLMODE_FRONT;
+ break;
+ case GL_BACK:
+ sf.CullMode = CULLMODE_BACK;
+ break;
+ case GL_FRONT_AND_BACK:
+ sf.CullMode = CULLMODE_BOTH;
+ break;
+ default:
+ unreachable("not reached");
+ }
+ } else {
+ sf.CullMode = CULLMODE_NONE;
+ }
+
+#if GEN_IS_HASWELL
+ sf.LineStippleEnable = ctx->Line.StippleFlag;
+#endif
+
+ if (multisampled_fbo && ctx->Multisample.Enabled)
+ sf.MultisampleRasterizationMode = MSRASTMODE_ON_PATTERN;
+
+ sf.GlobalDepthOffsetConstant = ctx->Polygon.OffsetUnits * 2;
+ sf.GlobalDepthOffsetScale = ctx->Polygon.OffsetFactor;
+ sf.GlobalDepthOffsetClamp = ctx->Polygon.OffsetClamp;
+#endif
+
+ /* _NEW_LINE */
+#if GEN_GEN == 8
+ if (brw->is_cherryview)
+ sf.CHVLineWidth = brw_get_line_width(brw);
+ else
+ sf.LineWidth = brw_get_line_width(brw);
+#else
+ sf.LineWidth = brw_get_line_width(brw);
+#endif
+
+ if (ctx->Line.SmoothFlag) {
+ sf.LineEndCapAntialiasingRegionWidth = _10pixels;
+#if GEN_GEN <= 7
+ sf.AntiAliasingEnable = true;
+#endif
+ }
+
+ /* _NEW_POINT - Clamp to ARB_point_parameters user limits */
+ point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
+ /* Clamp to the hardware limits */
+ sf.PointWidth = CLAMP(point_size, 0.125f, 255.875f);
+
+ /* _NEW_PROGRAM | _NEW_POINT, BRW_NEW_VUE_MAP_GEOM_OUT */
+ if (use_state_point_size(brw))
+ sf.PointWidthSource = State;
+
+#if GEN_GEN >= 8
+ /* _NEW_POINT | _NEW_MULTISAMPLE */
+ if ((ctx->Point.SmoothFlag || _mesa_is_multisample_enabled(ctx)) &&
+ !ctx->Point.PointSprite)
+ sf.SmoothPointEnable = true;
+#endif
+
+ sf.AALineDistanceMode = AALINEDISTANCE_TRUE;
+
+ /* _NEW_LIGHT */
+ if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
+ sf.TriangleStripListProvokingVertexSelect = 2;
+ sf.TriangleFanProvokingVertexSelect = 2;
+ sf.LineStripListProvokingVertexSelect = 1;
+ } else {
+ sf.TriangleFanProvokingVertexSelect = 1;
+ }
+
+#if GEN_GEN == 6
+ /* BRW_NEW_FS_PROG_DATA */
+ const struct brw_wm_prog_data *wm_prog_data =
+ brw_wm_prog_data(brw->wm.base.prog_data);
+
+ sf.AttributeSwizzleEnable = true;
+ sf.NumberofSFOutputAttributes = wm_prog_data->num_varying_inputs;
+
+ /*
+ * Window coordinates in an FBO are inverted, which means point
+ * sprite origin must be inverted, too.
+ */
+ if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
+ sf.PointSpriteTextureCoordinateOrigin = LOWERLEFT;
+ } else {
+ sf.PointSpriteTextureCoordinateOrigin = UPPERLEFT;
+ }
+
+ /* BRW_NEW_VUE_MAP_GEOM_OUT | BRW_NEW_FRAGMENT_PROGRAM |
+ * _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
+ */
+ uint32_t urb_entry_read_length;
+ uint32_t urb_entry_read_offset;
+ uint32_t point_sprite_enables;
+ genX(calculate_attr_overrides)(brw, sf.Attribute, &point_sprite_enables,
+ &urb_entry_read_length,
+ &urb_entry_read_offset);
+ sf.VertexURBEntryReadLength = urb_entry_read_length;
+ sf.VertexURBEntryReadOffset = urb_entry_read_offset;
+ sf.PointSpriteTextureCoordinateEnable = point_sprite_enables;
+ sf.ConstantInterpolationEnable = wm_prog_data->flat_inputs;
+#endif
+ }
+}
+
+static const struct brw_tracked_state genX(sf_state) = {
+ .dirty = {
+ .mesa = _NEW_LIGHT |
+ _NEW_LINE |
+ _NEW_MULTISAMPLE |
+ _NEW_POINT |
+ _NEW_PROGRAM |
+ (GEN_GEN <= 7 ? _NEW_BUFFERS | _NEW_POLYGON : 0),
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_VUE_MAP_GEOM_OUT |
+ (GEN_GEN <= 7 ? BRW_NEW_GS_PROG_DATA |
+ BRW_NEW_PRIMITIVE |
+ BRW_NEW_TES_PROG_DATA
+ : 0) |
+ (GEN_GEN == 6 ? BRW_NEW_FS_PROG_DATA |
+ BRW_NEW_FRAGMENT_PROGRAM
+ : 0),
+ },
+ .emit = genX(upload_sf),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN >= 6
+static void
+genX(upload_wm)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ /* BRW_NEW_FS_PROG_DATA */
+ const struct brw_wm_prog_data *wm_prog_data =
+ brw_wm_prog_data(brw->wm.base.prog_data);
+
+ UNUSED bool writes_depth =
+ wm_prog_data->computed_depth_mode != BRW_PSCDEPTH_OFF;
+
+#if GEN_GEN < 7
+ const struct brw_stage_state *stage_state = &brw->wm.base;
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+
+ /* We can't fold this into gen6_upload_wm_push_constants(), because
+ * according to the SNB PRM, vol 2 part 1 section 7.2.2
+ * (3DSTATE_CONSTANT_PS [DevSNB]):
+ *
+ * "[DevSNB]: This packet must be followed by WM_STATE."
+ */
+ brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_PS), wmcp) {
+ if (wm_prog_data->base.nr_params != 0) {
+ wmcp.Buffer0Valid = true;
+ /* Pointer to the WM constant buffer. Covered by the set of
+ * state flags from gen6_upload_wm_push_constants.
+ */
+ wmcp.PointertoPSConstantBuffer0 = stage_state->push_const_offset;
+ wmcp.PSConstantBuffer0ReadLength = stage_state->push_const_size - 1;
+ }
+ }
+#endif
+
+ brw_batch_emit(brw, GENX(3DSTATE_WM), wm) {
+ wm.StatisticsEnable = true;
+ wm.LineAntialiasingRegionWidth = _10pixels;
+ wm.LineEndCapAntialiasingRegionWidth = _05pixels;
+
+#if GEN_GEN < 7
+ if (wm_prog_data->base.use_alt_mode)
+ wm.FloatingPointMode = Alternate;
+
+ wm.SamplerCount = DIV_ROUND_UP(stage_state->sampler_count, 4);
+ wm.BindingTableEntryCount = wm_prog_data->base.binding_table.size_bytes / 4;
+ wm.MaximumNumberofThreads = devinfo->max_wm_threads - 1;
+ wm._8PixelDispatchEnable = wm_prog_data->dispatch_8;
+ wm._16PixelDispatchEnable = wm_prog_data->dispatch_16;
+ wm.DispatchGRFStartRegisterForConstantSetupData0 =
+ wm_prog_data->base.dispatch_grf_start_reg;
+ wm.DispatchGRFStartRegisterForConstantSetupData2 =
+ wm_prog_data->dispatch_grf_start_reg_2;
+ wm.KernelStartPointer0 = stage_state->prog_offset;
+ wm.KernelStartPointer2 = stage_state->prog_offset +
+ wm_prog_data->prog_offset_2;
+ wm.DualSourceBlendEnable =
+ wm_prog_data->dual_src_blend && (ctx->Color.BlendEnabled & 1) &&
+ ctx->Color.Blend[0]._UsesDualSrc;
+ wm.oMaskPresenttoRenderTarget = wm_prog_data->uses_omask;
+ wm.NumberofSFOutputAttributes = wm_prog_data->num_varying_inputs;
+
+ /* From the SNB PRM, volume 2 part 1, page 281:
+ * "If the PS kernel does not need the Position XY Offsets
+ * to compute a Position XY value, then this field should be
+ * programmed to POSOFFSET_NONE."
+ *
+ * "SW Recommendation: If the PS kernel needs the Position Offsets
+ * to compute a Position XY value, this field should match Position
+ * ZW Interpolation Mode to ensure a consistent position.xyzw
+ * computation."
+ * We only require XY sample offsets. So, this recommendation doesn't
+ * look useful at the moment. We might need this in future.
+ */
+ if (wm_prog_data->uses_pos_offset)
+ wm.PositionXYOffsetSelect = POSOFFSET_SAMPLE;
+ else
+ wm.PositionXYOffsetSelect = POSOFFSET_NONE;
+
+ if (wm_prog_data->base.total_scratch) {
+ wm.ScratchSpaceBasePointer =
+ render_bo(stage_state->scratch_bo,
+ ffs(stage_state->per_thread_scratch) - 11);
+ }
+
+ wm.PixelShaderComputedDepth = writes_depth;
+#endif
+
+ wm.PointRasterizationRule = RASTRULE_UPPER_RIGHT;
+
+ /* _NEW_LINE */
+ wm.LineStippleEnable = ctx->Line.StippleFlag;
+
+ /* _NEW_POLYGON */
+ wm.PolygonStippleEnable = ctx->Polygon.StippleFlag;
+ wm.BarycentricInterpolationMode = wm_prog_data->barycentric_interp_modes;
+
+#if GEN_GEN < 8
+ /* _NEW_BUFFERS */
+ const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
+
+ wm.PixelShaderUsesSourceDepth = wm_prog_data->uses_src_depth;
+ wm.PixelShaderUsesSourceW = wm_prog_data->uses_src_w;
+ if (wm_prog_data->uses_kill ||
+ _mesa_is_alpha_test_enabled(ctx) ||
+ _mesa_is_alpha_to_coverage_enabled(ctx) ||
+ wm_prog_data->uses_omask) {
+ wm.PixelShaderKillsPixel = true;
+ }
+
+ /* _NEW_BUFFERS | _NEW_COLOR */
+ if (brw_color_buffer_write_enabled(brw) || writes_depth ||
+ wm_prog_data->has_side_effects || wm.PixelShaderKillsPixel) {
+ wm.ThreadDispatchEnable = true;
+ }
+ if (multisampled_fbo) {
+ /* _NEW_MULTISAMPLE */
+ if (ctx->Multisample.Enabled)
+ wm.MultisampleRasterizationMode = MSRASTMODE_ON_PATTERN;
+ else
+ wm.MultisampleRasterizationMode = MSRASTMODE_OFF_PIXEL;
+
+ if (wm_prog_data->persample_dispatch)
+ wm.MultisampleDispatchMode = MSDISPMODE_PERSAMPLE;
+ else
+ wm.MultisampleDispatchMode = MSDISPMODE_PERPIXEL;
+ } else {
+ wm.MultisampleRasterizationMode = MSRASTMODE_OFF_PIXEL;
+ wm.MultisampleDispatchMode = MSDISPMODE_PERSAMPLE;
+ }
+
+#if GEN_GEN >= 7
+ wm.PixelShaderComputedDepthMode = wm_prog_data->computed_depth_mode;
+ wm.PixelShaderUsesInputCoverageMask = wm_prog_data->uses_sample_mask;
+#endif
+
+ /* The "UAV access enable" bits are unnecessary on HSW because they only
+ * seem to have an effect on the HW-assisted coherency mechanism which we
+ * don't need, and the rasterization-related UAV_ONLY flag and the
+ * DISPATCH_ENABLE bit can be set independently from it.
+ * C.f. gen8_upload_ps_extra().
+ *
+ * BRW_NEW_FRAGMENT_PROGRAM | BRW_NEW_FS_PROG_DATA | _NEW_BUFFERS |
+ * _NEW_COLOR
+ */
+#if GEN_IS_HASWELL
+ if (!(brw_color_buffer_write_enabled(brw) || writes_depth) &&
+ wm_prog_data->has_side_effects)
+ wm.PSUAVonly = ON;
+#endif
+#endif
+
+#if GEN_GEN >= 7
+ /* BRW_NEW_FS_PROG_DATA */
+ if (wm_prog_data->early_fragment_tests)
+ wm.EarlyDepthStencilControl = EDSC_PREPS;
+ else if (wm_prog_data->has_side_effects)
+ wm.EarlyDepthStencilControl = EDSC_PSEXEC;
+#endif
+ }
+}
+
+static const struct brw_tracked_state genX(wm_state) = {
+ .dirty = {
+ .mesa = _NEW_LINE |
+ _NEW_POLYGON |
+ (GEN_GEN < 8 ? _NEW_BUFFERS |
+ _NEW_COLOR |
+ _NEW_MULTISAMPLE :
+ 0) |
+ (GEN_GEN < 7 ? _NEW_PROGRAM_CONSTANTS : 0),
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_FS_PROG_DATA |
+ (GEN_GEN < 7 ? BRW_NEW_BATCH : BRW_NEW_CONTEXT),
+ },
+ .emit = genX(upload_wm),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#define INIT_THREAD_DISPATCH_FIELDS(pkt, prefix) \
+ pkt.KernelStartPointer = stage_state->prog_offset; \
+ pkt.SamplerCount = \
+ DIV_ROUND_UP(CLAMP(stage_state->sampler_count, 0, 16), 4); \
+ pkt.BindingTableEntryCount = \
+ stage_prog_data->binding_table.size_bytes / 4; \
+ pkt.FloatingPointMode = stage_prog_data->use_alt_mode; \
+ \
+ if (stage_prog_data->total_scratch) { \
+ pkt.ScratchSpaceBasePointer = \
+ render_bo(stage_state->scratch_bo, 0); \
+ pkt.PerThreadScratchSpace = \
+ ffs(stage_state->per_thread_scratch) - 11; \
+ } \
+ \
+ pkt.DispatchGRFStartRegisterForURBData = \
+ stage_prog_data->dispatch_grf_start_reg; \
+ pkt.prefix##URBEntryReadLength = vue_prog_data->urb_read_length; \
+ pkt.prefix##URBEntryReadOffset = 0; \
+ \
+ pkt.StatisticsEnable = true; \
+ pkt.Enable = true;
+
+#if GEN_GEN >= 6
+static void
+genX(upload_vs_state)(struct brw_context *brw)
+{
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ const struct brw_stage_state *stage_state = &brw->vs.base;
+
+ /* BRW_NEW_VS_PROG_DATA */
+ const struct brw_vue_prog_data *vue_prog_data =
+ brw_vue_prog_data(brw->vs.base.prog_data);
+ const struct brw_stage_prog_data *stage_prog_data = &vue_prog_data->base;
+
+ assert(vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ||
+ vue_prog_data->dispatch_mode == DISPATCH_MODE_4X2_DUAL_OBJECT);
+
+#if GEN_GEN == 6
+ /* From the BSpec, 3D Pipeline > Geometry > Vertex Shader > State,
+ * 3DSTATE_VS, Dword 5.0 "VS Function Enable":
+ *
+ * [DevSNB] A pipeline flush must be programmed prior to a 3DSTATE_VS
+ * command that causes the VS Function Enable to toggle. Pipeline
+ * flush can be executed by sending a PIPE_CONTROL command with CS
+ * stall bit set and a post sync operation.
+ *
+ * We've already done such a flush at the start of state upload, so we
+ * don't need to do another one here.
+ */
+ brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_VS), cvs) {
+ if (stage_state->push_const_size != 0) {
+ cvs.Buffer0Valid = true;
+ cvs.PointertoVSConstantBuffer0 = stage_state->push_const_offset;
+ cvs.VSConstantBuffer0ReadLength = stage_state->push_const_size - 1;
+ }
+ }
+#endif
+
+ if (GEN_GEN == 7 && devinfo->is_ivybridge)
+ gen7_emit_vs_workaround_flush(brw);
+
+ brw_batch_emit(brw, GENX(3DSTATE_VS), vs) {
+ INIT_THREAD_DISPATCH_FIELDS(vs, Vertex);
+
+ vs.MaximumNumberofThreads = devinfo->max_vs_threads - 1;
+
+#if GEN_GEN >= 8
+ vs.SIMD8DispatchEnable =
+ vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8;
+
+ vs.UserClipDistanceCullTestEnableBitmask =
+ vue_prog_data->cull_distance_mask;
+#endif
+ }
+
+#if GEN_GEN == 6
+ /* Based on my reading of the simulator, the VS constants don't get
+ * pulled into the VS FF unit until an appropriate pipeline flush
+ * happens, and instead the 3DSTATE_CONSTANT_VS packet just adds
+ * references to them into a little FIFO. The flushes are common,
+ * but don't reliably happen between this and a 3DPRIMITIVE, causing
+ * the primitive to use the wrong constants. Then the FIFO
+ * containing the constant setup gets added to again on the next
+ * constants change, and eventually when a flush does happen the
+ * unit is overwhelmed by constant changes and dies.
+ *
+ * To avoid this, send a PIPE_CONTROL down the line that will
+ * update the unit immediately loading the constants. The flush
+ * type bits here were those set by the STATE_BASE_ADDRESS whose
+ * move in a82a43e8d99e1715dd11c9c091b5ab734079b6a6 triggered the
+ * bug reports that led to this workaround, and may be more than
+ * what is strictly required to avoid the issue.
+ */
+ brw_emit_pipe_control_flush(brw,
+ PIPE_CONTROL_DEPTH_STALL |
+ PIPE_CONTROL_INSTRUCTION_INVALIDATE |
+ PIPE_CONTROL_STATE_CACHE_INVALIDATE);
+#endif
+}
+
+static const struct brw_tracked_state genX(vs_state) = {
+ .dirty = {
+ .mesa = (GEN_GEN == 6 ? (_NEW_PROGRAM_CONSTANTS | _NEW_TRANSFORM) : 0),
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_VS_PROG_DATA |
+ (GEN_GEN == 6 ? BRW_NEW_VERTEX_PROGRAM : 0),
+ },
+ .emit = genX(upload_vs_state),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 6
static void
-genX(upload_sf)(struct brw_context *brw)
+brw_calculate_guardband_size(const struct gen_device_info *devinfo,
+ uint32_t fb_width, uint32_t fb_height,
+ float m00, float m11, float m30, float m31,
+ float *xmin, float *xmax,
+ float *ymin, float *ymax)
+{
+ /* According to the "Vertex X,Y Clamping and Quantization" section of the
+ * Strips and Fans documentation:
+ *
+ * "The vertex X and Y screen-space coordinates are also /clamped/ to the
+ * fixed-point "guardband" range supported by the rasterization hardware"
+ *
+ * and
+ *
+ * "In almost all circumstances, if an object’s vertices are actually
+ * modified by this clamping (i.e., had X or Y coordinates outside of
+ * the guardband extent the rendered object will not match the intended
+ * result. Therefore software should take steps to ensure that this does
+ * not happen - e.g., by clipping objects such that they do not exceed
+ * these limits after the Drawing Rectangle is applied."
+ *
+ * I believe the fundamental restriction is that the rasterizer (in
+ * the SF/WM stages) have a limit on the number of pixels that can be
+ * rasterized. We need to ensure any coordinates beyond the rasterizer
+ * limit are handled by the clipper. So effectively that limit becomes
+ * the clipper's guardband size.
+ *
+ * It goes on to say:
+ *
+ * "In addition, in order to be correctly rendered, objects must have a
+ * screenspace bounding box not exceeding 8K in the X or Y direction.
+ * This additional restriction must also be comprehended by software,
+ * i.e., enforced by use of clipping."
+ *
+ * This makes no sense. Gen7+ hardware supports 16K render targets,
+ * and you definitely need to be able to draw polygons that fill the
+ * surface. Our assumption is that the rasterizer was limited to 8K
+ * on Sandybridge, which only supports 8K surfaces, and it was actually
+ * increased to 16K on Ivybridge and later.
+ *
+ * So, limit the guardband to 16K on Gen7+ and 8K on Sandybridge.
+ */
+ const float gb_size = devinfo->gen >= 7 ? 16384.0f : 8192.0f;
+
+ if (m00 != 0 && m11 != 0) {
+ /* First, we compute the screen-space render area */
+ const float ss_ra_xmin = MIN3( 0, m30 + m00, m30 - m00);
+ const float ss_ra_xmax = MAX3( fb_width, m30 + m00, m30 - m00);
+ const float ss_ra_ymin = MIN3( 0, m31 + m11, m31 - m11);
+ const float ss_ra_ymax = MAX3(fb_height, m31 + m11, m31 - m11);
+
+ /* We want the guardband to be centered on that */
+ const float ss_gb_xmin = (ss_ra_xmin + ss_ra_xmax) / 2 - gb_size;
+ const float ss_gb_xmax = (ss_ra_xmin + ss_ra_xmax) / 2 + gb_size;
+ const float ss_gb_ymin = (ss_ra_ymin + ss_ra_ymax) / 2 - gb_size;
+ const float ss_gb_ymax = (ss_ra_ymin + ss_ra_ymax) / 2 + gb_size;
+
+ /* Now we need it in native device coordinates */
+ const float ndc_gb_xmin = (ss_gb_xmin - m30) / m00;
+ const float ndc_gb_xmax = (ss_gb_xmax - m30) / m00;
+ const float ndc_gb_ymin = (ss_gb_ymin - m31) / m11;
+ const float ndc_gb_ymax = (ss_gb_ymax - m31) / m11;
+
+ /* Thanks to Y-flipping and ORIGIN_UPPER_LEFT, the Y coordinates may be
+ * flipped upside-down. X should be fine though.
+ */
+ assert(ndc_gb_xmin <= ndc_gb_xmax);
+ *xmin = ndc_gb_xmin;
+ *xmax = ndc_gb_xmax;
+ *ymin = MIN2(ndc_gb_ymin, ndc_gb_ymax);
+ *ymax = MAX2(ndc_gb_ymin, ndc_gb_ymax);
+ } else {
+ /* The viewport scales to 0, so nothing will be rendered. */
+ *xmin = 0.0f;
+ *xmax = 0.0f;
+ *ymin = 0.0f;
+ *ymax = 0.0f;
+ }
+}
+
+static void
+genX(upload_sf_clip_viewport)(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
- float point_size;
+ float y_scale, y_bias;
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+
+ /* BRW_NEW_VIEWPORT_COUNT */
+ const unsigned viewport_count = brw->clip.viewport_count;
-#if GEN_GEN <= 7
/* _NEW_BUFFERS */
- bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
- const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
+ const bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
+ const uint32_t fb_width = (float)_mesa_geometric_width(ctx->DrawBuffer);
+ const uint32_t fb_height = (float)_mesa_geometric_height(ctx->DrawBuffer);
+
+#if GEN_GEN >= 7
+#define clv sfv
+ struct GENX(SF_CLIP_VIEWPORT) sfv;
+ uint32_t sf_clip_vp_offset;
+ uint32_t *sf_clip_map = brw_state_batch(brw, 16 * 4 * viewport_count,
+ 64, &sf_clip_vp_offset);
+#else
+ struct GENX(SF_VIEWPORT) sfv;
+ struct GENX(CLIP_VIEWPORT) clv;
+ uint32_t *sf_map = brw_state_batch(brw, 8 * 4 * viewport_count,
+ 32, &brw->sf.vp_offset);
+ uint32_t *clip_map = brw_state_batch(brw, 4 * 4 * viewport_count,
+ 32, &brw->clip.vp_offset);
#endif
- brw_batch_emit(brw, GENX(3DSTATE_SF), sf) {
- sf.StatisticsEnable = true;
- sf.ViewportTransformEnable = brw->sf.viewport_transform_enable;
+ /* _NEW_BUFFERS */
+ if (render_to_fbo) {
+ y_scale = 1.0;
+ y_bias = 0;
+ } else {
+ y_scale = -1.0;
+ y_bias = (float)fb_height;
+ }
-#if GEN_GEN == 7
- /* _NEW_BUFFERS */
- sf.DepthBufferSurfaceFormat = brw_depthbuffer_format(brw);
+ for (unsigned i = 0; i < brw->clip.viewport_count; i++) {
+ /* _NEW_VIEWPORT: Guardband Clipping */
+ float scale[3], translate[3], gb_xmin, gb_xmax, gb_ymin, gb_ymax;
+ _mesa_get_viewport_xform(ctx, i, scale, translate);
+
+ sfv.ViewportMatrixElementm00 = scale[0];
+ sfv.ViewportMatrixElementm11 = scale[1] * y_scale,
+ sfv.ViewportMatrixElementm22 = scale[2],
+ sfv.ViewportMatrixElementm30 = translate[0],
+ sfv.ViewportMatrixElementm31 = translate[1] * y_scale + y_bias,
+ sfv.ViewportMatrixElementm32 = translate[2],
+ brw_calculate_guardband_size(devinfo, fb_width, fb_height,
+ sfv.ViewportMatrixElementm00,
+ sfv.ViewportMatrixElementm11,
+ sfv.ViewportMatrixElementm30,
+ sfv.ViewportMatrixElementm31,
+ &gb_xmin, &gb_xmax, &gb_ymin, &gb_ymax);
+
+
+ clv.XMinClipGuardband = gb_xmin;
+ clv.XMaxClipGuardband = gb_xmax;
+ clv.YMinClipGuardband = gb_ymin;
+ clv.YMaxClipGuardband = gb_ymax;
+
+#if GEN_GEN >= 8
+ /* _NEW_VIEWPORT | _NEW_BUFFERS: Screen Space Viewport
+ * The hardware will take the intersection of the drawing rectangle,
+ * scissor rectangle, and the viewport extents. We don't need to be
+ * smart, and can therefore just program the viewport extents.
+ */
+ const float viewport_Xmax =
+ ctx->ViewportArray[i].X + ctx->ViewportArray[i].Width;
+ const float viewport_Ymax =
+ ctx->ViewportArray[i].Y + ctx->ViewportArray[i].Height;
+
+ if (render_to_fbo) {
+ sfv.XMinViewPort = ctx->ViewportArray[i].X;
+ sfv.XMaxViewPort = viewport_Xmax - 1;
+ sfv.YMinViewPort = ctx->ViewportArray[i].Y;
+ sfv.YMaxViewPort = viewport_Ymax - 1;
+ } else {
+ sfv.XMinViewPort = ctx->ViewportArray[i].X;
+ sfv.XMaxViewPort = viewport_Xmax - 1;
+ sfv.YMinViewPort = fb_height - viewport_Ymax;
+ sfv.YMaxViewPort = fb_height - ctx->ViewportArray[i].Y - 1;
+ }
#endif
-#if GEN_GEN <= 7
- /* _NEW_POLYGON */
- sf.FrontWinding = ctx->Polygon._FrontBit == render_to_fbo;
- sf.GlobalDepthOffsetEnableSolid = ctx->Polygon.OffsetFill;
- sf.GlobalDepthOffsetEnableWireframe = ctx->Polygon.OffsetLine;
- sf.GlobalDepthOffsetEnablePoint = ctx->Polygon.OffsetPoint;
+#if GEN_GEN >= 7
+ GENX(SF_CLIP_VIEWPORT_pack)(NULL, sf_clip_map, &sfv);
+ sf_clip_map += 16;
+#else
+ GENX(SF_VIEWPORT_pack)(NULL, sf_map, &sfv);
+ GENX(CLIP_VIEWPORT_pack)(NULL, clip_map, &clv);
+ sf_map += 8;
+ clip_map += 4;
+#endif
+ }
- switch (ctx->Polygon.FrontMode) {
- case GL_FILL:
- sf.FrontFaceFillMode = FILL_MODE_SOLID;
- break;
- case GL_LINE:
- sf.FrontFaceFillMode = FILL_MODE_WIREFRAME;
- break;
- case GL_POINT:
- sf.FrontFaceFillMode = FILL_MODE_POINT;
- break;
- default:
- unreachable("not reached");
- }
+#if GEN_GEN >= 7
+ brw_batch_emit(brw, GENX(3DSTATE_VIEWPORT_STATE_POINTERS_SF_CLIP), ptr) {
+ ptr.SFClipViewportPointer = sf_clip_vp_offset;
+ }
+#else
+ brw->ctx.NewDriverState |= BRW_NEW_SF_VP | BRW_NEW_CLIP_VP;
+#endif
+}
- switch (ctx->Polygon.BackMode) {
- case GL_FILL:
- sf.BackFaceFillMode = FILL_MODE_SOLID;
- break;
- case GL_LINE:
- sf.BackFaceFillMode = FILL_MODE_WIREFRAME;
- break;
- case GL_POINT:
- sf.BackFaceFillMode = FILL_MODE_POINT;
- break;
- default:
- unreachable("not reached");
- }
+static const struct brw_tracked_state genX(sf_clip_viewport) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_VIEWPORT,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_VIEWPORT_COUNT,
+ },
+ .emit = genX(upload_sf_clip_viewport),
+};
+#endif
- sf.ScissorRectangleEnable = true;
+/* ---------------------------------------------------------------------- */
- if (ctx->Polygon.CullFlag) {
- switch (ctx->Polygon.CullFaceMode) {
- case GL_FRONT:
- sf.CullMode = CULLMODE_FRONT;
- break;
- case GL_BACK:
- sf.CullMode = CULLMODE_BACK;
- break;
- case GL_FRONT_AND_BACK:
- sf.CullMode = CULLMODE_BOTH;
- break;
- default:
- unreachable("not reached");
- }
- } else {
- sf.CullMode = CULLMODE_NONE;
+#if GEN_GEN >= 6
+static void
+genX(upload_gs_state)(struct brw_context *brw)
+{
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ const struct brw_stage_state *stage_state = &brw->gs.base;
+ /* BRW_NEW_GEOMETRY_PROGRAM */
+ bool active = brw->geometry_program;
+
+ /* BRW_NEW_GS_PROG_DATA */
+ struct brw_stage_prog_data *stage_prog_data = stage_state->prog_data;
+ const struct brw_vue_prog_data *vue_prog_data =
+ brw_vue_prog_data(stage_prog_data);
+#if GEN_GEN >= 7
+ const struct brw_gs_prog_data *gs_prog_data =
+ brw_gs_prog_data(stage_prog_data);
+#endif
+
+#if GEN_GEN < 7
+ brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_GS), cgs) {
+ if (active && stage_state->push_const_size != 0) {
+ cgs.Buffer0Valid = true;
+ cgs.PointertoGSConstantBuffer0 = stage_state->push_const_offset;
+ cgs.GSConstantBuffer0ReadLength = stage_state->push_const_size - 1;
}
+ }
+#endif
-#if GEN_IS_HASWELL
- sf.LineStippleEnable = ctx->Line.StippleFlag;
+#if GEN_GEN == 7 && !GEN_IS_HASWELL
+ /**
+ * From Graphics BSpec: 3D-Media-GPGPU Engine > 3D Pipeline Stages >
+ * Geometry > Geometry Shader > State:
+ *
+ * "Note: Because of corruption in IVB:GT2, software needs to flush the
+ * whole fixed function pipeline when the GS enable changes value in
+ * the 3DSTATE_GS."
+ *
+ * The hardware architects have clarified that in this context "flush the
+ * whole fixed function pipeline" means to emit a PIPE_CONTROL with the "CS
+ * Stall" bit set.
+ */
+ if (brw->gt == 2 && brw->gs.enabled != active)
+ gen7_emit_cs_stall_flush(brw);
#endif
- if (multisampled_fbo && ctx->Multisample.Enabled)
- sf.MultisampleRasterizationMode = MSRASTMODE_ON_PATTERN;
+ if (active) {
+ brw_batch_emit(brw, GENX(3DSTATE_GS), gs) {
+ INIT_THREAD_DISPATCH_FIELDS(gs, Vertex);
- sf.GlobalDepthOffsetConstant = ctx->Polygon.OffsetUnits * 2;
- sf.GlobalDepthOffsetScale = ctx->Polygon.OffsetFactor;
- sf.GlobalDepthOffsetClamp = ctx->Polygon.OffsetClamp;
+#if GEN_GEN >= 7
+ gs.OutputVertexSize = gs_prog_data->output_vertex_size_hwords * 2 - 1;
+ gs.OutputTopology = gs_prog_data->output_topology;
+ gs.ControlDataHeaderSize =
+ gs_prog_data->control_data_header_size_hwords;
+
+ gs.InstanceControl = gs_prog_data->invocations - 1;
+ gs.DispatchMode = vue_prog_data->dispatch_mode;
+
+ gs.IncludePrimitiveID = gs_prog_data->include_primitive_id;
+
+ gs.ControlDataFormat = gs_prog_data->control_data_format;
#endif
- /* _NEW_LINE */
- sf.LineWidth = brw_get_line_width_float(brw);
+ /* Note: the meaning of the GEN7_GS_REORDER_TRAILING bit changes between
+ * Ivy Bridge and Haswell.
+ *
+ * On Ivy Bridge, setting this bit causes the vertices of a triangle
+ * strip to be delivered to the geometry shader in an order that does
+ * not strictly follow the OpenGL spec, but preserves triangle
+ * orientation. For example, if the vertices are (1, 2, 3, 4, 5), then
+ * the geometry shader sees triangles:
+ *
+ * (1, 2, 3), (2, 4, 3), (3, 4, 5)
+ *
+ * (Clearing the bit is even worse, because it fails to preserve
+ * orientation).
+ *
+ * Triangle strips with adjacency always ordered in a way that preserves
+ * triangle orientation but does not strictly follow the OpenGL spec,
+ * regardless of the setting of this bit.
+ *
+ * On Haswell, both triangle strips and triangle strips with adjacency
+ * are always ordered in a way that preserves triangle orientation.
+ * Setting this bit causes the ordering to strictly follow the OpenGL
+ * spec.
+ *
+ * So in either case we want to set the bit. Unfortunately on Ivy
+ * Bridge this will get the order close to correct but not perfect.
+ */
+ gs.ReorderMode = TRAILING;
+ gs.MaximumNumberofThreads =
+ GEN_GEN == 8 ? (devinfo->max_gs_threads / 2 - 1)
+ : (devinfo->max_gs_threads - 1);
- if (ctx->Line.SmoothFlag) {
- sf.LineEndCapAntialiasingRegionWidth = _10pixels;
-#if GEN_GEN <= 7
- sf.AntiAliasingEnable = true;
+#if GEN_GEN < 7
+ gs.SOStatisticsEnable = true;
+ gs.RenderingEnabled = 1;
+ if (brw->geometry_program->info.has_transform_feedback_varyings)
+ gs.SVBIPayloadEnable = true;
+
+ /* GEN6_GS_SPF_MODE and GEN6_GS_VECTOR_MASK_ENABLE are enabled as it
+ * was previously done for gen6.
+ *
+ * TODO: test with both disabled to see if the HW is behaving
+ * as expected, like in gen7.
+ */
+ gs.SingleProgramFlow = true;
+ gs.VectorMaskEnable = true;
+#endif
+
+#if GEN_GEN >= 8
+ gs.ExpectedVertexCount = gs_prog_data->vertices_in;
+
+ if (gs_prog_data->static_vertex_count != -1) {
+ gs.StaticOutput = true;
+ gs.StaticOutputVertexCount = gs_prog_data->static_vertex_count;
+ }
+ gs.IncludeVertexHandles = vue_prog_data->include_vue_handles;
+
+ gs.UserClipDistanceCullTestEnableBitmask =
+ vue_prog_data->cull_distance_mask;
+
+ const int urb_entry_write_offset = 1;
+ const uint32_t urb_entry_output_length =
+ DIV_ROUND_UP(vue_prog_data->vue_map.num_slots, 2) -
+ urb_entry_write_offset;
+
+ gs.VertexURBEntryOutputReadOffset = urb_entry_write_offset;
+ gs.VertexURBEntryOutputLength = MAX2(urb_entry_output_length, 1);
#endif
}
+#if GEN_GEN < 7
+ } else if (brw->ff_gs.prog_active) {
+ /* In gen6, transform feedback for the VS stage is done with an ad-hoc GS
+ * program. This function provides the needed 3DSTATE_GS for this.
+ */
+ upload_gs_state_for_tf(brw);
+#endif
+ } else {
+ brw_batch_emit(brw, GENX(3DSTATE_GS), gs) {
+ gs.StatisticsEnable = true;
+#if GEN_GEN < 7
+ gs.RenderingEnabled = true;
+#endif
- /* _NEW_POINT - Clamp to ARB_point_parameters user limits */
- point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
- /* Clamp to the hardware limits */
- sf.PointWidth = CLAMP(point_size, 0.125f, 255.875f);
+#if GEN_GEN < 8
+ gs.DispatchGRFStartRegisterForURBData = 1;
+#if GEN_GEN >= 7
+ gs.IncludeVertexHandles = true;
+#endif
+#endif
+ }
+ }
+#if GEN_GEN < 7
+ brw->gs.enabled = active;
+#endif
+}
- /* _NEW_PROGRAM | _NEW_POINT, BRW_NEW_VUE_MAP_GEOM_OUT */
- if (use_state_point_size(brw))
- sf.PointWidthSource = State;
+static const struct brw_tracked_state genX(gs_state) = {
+ .dirty = {
+ .mesa = (GEN_GEN < 7 ? _NEW_PROGRAM_CONSTANTS : 0),
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_GEOMETRY_PROGRAM |
+ BRW_NEW_GS_PROG_DATA |
+ (GEN_GEN < 7 ? BRW_NEW_FF_GS_PROG_DATA : 0),
+ },
+ .emit = genX(upload_gs_state),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#define blend_factor(x) brw_translate_blend_factor(x)
+#define blend_eqn(x) brw_translate_blend_equation(x)
+
+#if GEN_GEN >= 6
+static void
+genX(upload_blend_state)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+ int size;
+
+ /* We need at least one BLEND_STATE written, because we might do
+ * thread dispatch even if _NumColorDrawBuffers is 0 (for example
+ * for computed depth or alpha test), which will do an FB write
+ * with render target 0, which will reference BLEND_STATE[0] for
+ * alpha test enable.
+ */
+ int nr_draw_buffers = ctx->DrawBuffer->_NumColorDrawBuffers;
+ if (nr_draw_buffers == 0 && ctx->Color.AlphaEnabled)
+ nr_draw_buffers = 1;
+ size = GENX(BLEND_STATE_ENTRY_length) * 4 * nr_draw_buffers;
#if GEN_GEN >= 8
- /* _NEW_POINT | _NEW_MULTISAMPLE */
- if ((ctx->Point.SmoothFlag || _mesa_is_multisample_enabled(ctx)) &&
- !ctx->Point.PointSprite)
- sf.SmoothPointEnable = true;
+ size += GENX(BLEND_STATE_length) * 4;
#endif
- sf.AALineDistanceMode = AALINEDISTANCE_TRUE;
+ uint32_t *blend_map;
+ blend_map = brw_state_batch(brw, size, 64, &brw->cc.blend_state_offset);
- /* _NEW_LIGHT */
- if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
- sf.TriangleStripListProvokingVertexSelect = 2;
- sf.TriangleFanProvokingVertexSelect = 2;
- sf.LineStripListProvokingVertexSelect = 1;
- } else {
- sf.TriangleFanProvokingVertexSelect = 1;
+#if GEN_GEN >= 8
+ struct GENX(BLEND_STATE) blend = { 0 };
+ {
+#else
+ for (int i = 0; i < nr_draw_buffers; i++) {
+ struct GENX(BLEND_STATE_ENTRY) entry = { 0 };
+#define blend entry
+#endif
+ /* OpenGL specification 3.3 (page 196), section 4.1.3 says:
+ * "If drawbuffer zero is not NONE and the buffer it references has an
+ * integer format, the SAMPLE_ALPHA_TO_COVERAGE and SAMPLE_ALPHA_TO_ONE
+ * operations are skipped."
+ */
+ if (!(ctx->DrawBuffer->_IntegerBuffers & 0x1)) {
+ /* _NEW_MULTISAMPLE */
+ if (_mesa_is_multisample_enabled(ctx)) {
+ if (ctx->Multisample.SampleAlphaToCoverage) {
+ blend.AlphaToCoverageEnable = true;
+ blend.AlphaToCoverageDitherEnable = GEN_GEN >= 7;
+ }
+ if (ctx->Multisample.SampleAlphaToOne)
+ blend.AlphaToOneEnable = true;
+ }
+
+ /* _NEW_COLOR */
+ if (ctx->Color.AlphaEnabled) {
+ blend.AlphaTestEnable = true;
+ blend.AlphaTestFunction =
+ intel_translate_compare_func(ctx->Color.AlphaFunc);
+ }
+
+ if (ctx->Color.DitherFlag) {
+ blend.ColorDitherEnable = true;
+ }
}
-#if GEN_GEN == 6
- /* BRW_NEW_FS_PROG_DATA */
- const struct brw_wm_prog_data *wm_prog_data =
- brw_wm_prog_data(brw->wm.base.prog_data);
+#if GEN_GEN >= 8
+ for (int i = 0; i < nr_draw_buffers; i++) {
+ struct GENX(BLEND_STATE_ENTRY) entry = { 0 };
+#else
+ {
+#endif
- sf.AttributeSwizzleEnable = true;
- sf.NumberofSFOutputAttributes = wm_prog_data->num_varying_inputs;
+ /* _NEW_BUFFERS */
+ struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[i];
- /*
- * Window coordinates in an FBO are inverted, which means point
- * sprite origin must be inverted, too.
- */
- if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
- sf.PointSpriteTextureCoordinateOrigin = LOWERLEFT;
- } else {
- sf.PointSpriteTextureCoordinateOrigin = UPPERLEFT;
- }
+ /* Used for implementing the following bit of GL_EXT_texture_integer:
+ * "Per-fragment operations that require floating-point color
+ * components, including multisample alpha operations, alpha test,
+ * blending, and dithering, have no effect when the corresponding
+ * colors are written to an integer color buffer."
+ */
+ bool integer = ctx->DrawBuffer->_IntegerBuffers & (0x1 << i);
+
+ /* _NEW_COLOR */
+ if (ctx->Color.ColorLogicOpEnabled) {
+ GLenum rb_type = rb ? _mesa_get_format_datatype(rb->Format)
+ : GL_UNSIGNED_NORMALIZED;
+ WARN_ONCE(ctx->Color.LogicOp != GL_COPY &&
+ rb_type != GL_UNSIGNED_NORMALIZED &&
+ rb_type != GL_FLOAT, "Ignoring %s logic op on %s "
+ "renderbuffer\n",
+ _mesa_enum_to_string(ctx->Color.LogicOp),
+ _mesa_enum_to_string(rb_type));
+ if (GEN_GEN >= 8 || rb_type == GL_UNSIGNED_NORMALIZED) {
+ entry.LogicOpEnable = true;
+ entry.LogicOpFunction =
+ intel_translate_logic_op(ctx->Color.LogicOp);
+ }
+ } else if (ctx->Color.BlendEnabled & (1 << i) && !integer &&
+ !ctx->Color._AdvancedBlendMode) {
+ GLenum eqRGB = ctx->Color.Blend[i].EquationRGB;
+ GLenum eqA = ctx->Color.Blend[i].EquationA;
+ GLenum srcRGB = ctx->Color.Blend[i].SrcRGB;
+ GLenum dstRGB = ctx->Color.Blend[i].DstRGB;
+ GLenum srcA = ctx->Color.Blend[i].SrcA;
+ GLenum dstA = ctx->Color.Blend[i].DstA;
+
+ if (eqRGB == GL_MIN || eqRGB == GL_MAX)
+ srcRGB = dstRGB = GL_ONE;
+
+ if (eqA == GL_MIN || eqA == GL_MAX)
+ srcA = dstA = GL_ONE;
+
+ /* Due to hardware limitations, the destination may have information
+ * in an alpha channel even when the format specifies no alpha
+ * channel. In order to avoid getting any incorrect blending due to
+ * that alpha channel, coerce the blend factors to values that will
+ * not read the alpha channel, but will instead use the correct
+ * implicit value for alpha.
+ */
+ if (rb && !_mesa_base_format_has_channel(rb->_BaseFormat,
+ GL_TEXTURE_ALPHA_TYPE)) {
+ srcRGB = brw_fix_xRGB_alpha(srcRGB);
+ srcA = brw_fix_xRGB_alpha(srcA);
+ dstRGB = brw_fix_xRGB_alpha(dstRGB);
+ dstA = brw_fix_xRGB_alpha(dstA);
+ }
- /* BRW_NEW_VUE_MAP_GEOM_OUT | BRW_NEW_FRAGMENT_PROGRAM |
- * _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
- */
- uint32_t urb_entry_read_length;
- uint32_t urb_entry_read_offset;
- uint32_t point_sprite_enables;
- genX(calculate_attr_overrides)(brw, sf.Attribute, &point_sprite_enables,
- &urb_entry_read_length,
- &urb_entry_read_offset);
- sf.VertexURBEntryReadLength = urb_entry_read_length;
- sf.VertexURBEntryReadOffset = urb_entry_read_offset;
- sf.PointSpriteTextureCoordinateEnable = point_sprite_enables;
- sf.ConstantInterpolationEnable = wm_prog_data->flat_inputs;
+ entry.ColorBufferBlendEnable = true;
+ entry.DestinationBlendFactor = blend_factor(dstRGB);
+ entry.SourceBlendFactor = blend_factor(srcRGB);
+ entry.DestinationAlphaBlendFactor = blend_factor(dstA);
+ entry.SourceAlphaBlendFactor = blend_factor(srcA);
+ entry.ColorBlendFunction = blend_eqn(eqRGB);
+ entry.AlphaBlendFunction = blend_eqn(eqA);
+
+ if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB)
+ blend.IndependentAlphaBlendEnable = true;
+ }
+
+ /* See section 8.1.6 "Pre-Blend Color Clamping" of the
+ * SandyBridge PRM Volume 2 Part 1 for HW requirements.
+ *
+ * We do our ARB_color_buffer_float CLAMP_FRAGMENT_COLOR
+ * clamping in the fragment shader. For its clamping of
+ * blending, the spec says:
+ *
+ * "RESOLVED: For fixed-point color buffers, the inputs and
+ * the result of the blending equation are clamped. For
+ * floating-point color buffers, no clamping occurs."
+ *
+ * So, generally, we want clamping to the render target's range.
+ * And, good news, the hardware tables for both pre- and
+ * post-blend color clamping are either ignored, or any are
+ * allowed, or clamping is required but RT range clamping is a
+ * valid option.
+ */
+ entry.PreBlendColorClampEnable = true;
+ entry.PostBlendColorClampEnable = true;
+ entry.ColorClampRange = COLORCLAMP_RTFORMAT;
+
+ entry.WriteDisableRed = !ctx->Color.ColorMask[i][0];
+ entry.WriteDisableGreen = !ctx->Color.ColorMask[i][1];
+ entry.WriteDisableBlue = !ctx->Color.ColorMask[i][2];
+ entry.WriteDisableAlpha = !ctx->Color.ColorMask[i][3];
+
+ /* From the BLEND_STATE docs, DWord 0, Bit 29 (AlphaToOne Enable):
+ * "If Dual Source Blending is enabled, this bit must be disabled."
+ */
+ WARN_ONCE(ctx->Color.Blend[i]._UsesDualSrc &&
+ _mesa_is_multisample_enabled(ctx) &&
+ ctx->Multisample.SampleAlphaToOne,
+ "HW workaround: disabling alpha to one with dual src "
+ "blending\n");
+ if (ctx->Color.Blend[i]._UsesDualSrc)
+ blend.AlphaToOneEnable = false;
+#if GEN_GEN >= 8
+ GENX(BLEND_STATE_ENTRY_pack)(NULL, &blend_map[1 + i * 2], &entry);
+#else
+ GENX(BLEND_STATE_ENTRY_pack)(NULL, &blend_map[i * 2], &entry);
+#endif
+ }
+ }
+
+#if GEN_GEN >= 8
+ GENX(BLEND_STATE_pack)(NULL, blend_map, &blend);
+#endif
+
+#if GEN_GEN < 7
+ brw_batch_emit(brw, GENX(3DSTATE_CC_STATE_POINTERS), ptr) {
+ ptr.PointertoBLEND_STATE = brw->cc.blend_state_offset;
+ ptr.BLEND_STATEChange = true;
+ }
+#else
+ brw_batch_emit(brw, GENX(3DSTATE_BLEND_STATE_POINTERS), ptr) {
+ ptr.BlendStatePointer = brw->cc.blend_state_offset;
+#if GEN_GEN >= 8
+ ptr.BlendStatePointerValid = true;
#endif
}
+#endif
}
-static const struct brw_tracked_state genX(sf_state) = {
+static const struct brw_tracked_state genX(blend_state) = {
.dirty = {
- .mesa = _NEW_LIGHT |
- _NEW_LINE |
- _NEW_MULTISAMPLE |
- _NEW_POINT |
- _NEW_PROGRAM |
- (GEN_GEN <= 7 ? _NEW_BUFFERS | _NEW_POLYGON : 0),
- .brw = BRW_NEW_BLORP |
- BRW_NEW_CONTEXT |
- BRW_NEW_VUE_MAP_GEOM_OUT |
- (GEN_GEN <= 7 ? BRW_NEW_GS_PROG_DATA |
- BRW_NEW_PRIMITIVE |
- BRW_NEW_TES_PROG_DATA
- : 0) |
- (GEN_GEN == 6 ? BRW_NEW_FS_PROG_DATA |
- BRW_NEW_FRAGMENT_PROGRAM
- : 0),
+ .mesa = _NEW_BUFFERS |
+ _NEW_COLOR |
+ _NEW_MULTISAMPLE,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_STATE_BASE_ADDRESS,
},
- .emit = genX(upload_sf),
+ .emit = genX(upload_blend_state),
};
+#endif
/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 6
static void
-genX(upload_wm)(struct brw_context *brw)
+genX(upload_scissor_state)(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
+ const bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
+ struct GENX(SCISSOR_RECT) scissor;
+ uint32_t scissor_state_offset;
+ const unsigned int fb_width = _mesa_geometric_width(ctx->DrawBuffer);
+ const unsigned int fb_height = _mesa_geometric_height(ctx->DrawBuffer);
+ uint32_t *scissor_map;
- /* BRW_NEW_FS_PROG_DATA */
- const struct brw_wm_prog_data *wm_prog_data =
- brw_wm_prog_data(brw->wm.base.prog_data);
+ /* BRW_NEW_VIEWPORT_COUNT */
+ const unsigned viewport_count = brw->clip.viewport_count;
- UNUSED bool writes_depth =
- wm_prog_data->computed_depth_mode != BRW_PSCDEPTH_OFF;
+ scissor_map = brw_state_batch(
+ brw, GENX(SCISSOR_RECT_length) * sizeof(uint32_t) * viewport_count,
+ 32, &scissor_state_offset);
-#if GEN_GEN < 7
- const struct brw_stage_state *stage_state = &brw->wm.base;
- const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ /* _NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT */
- /* We can't fold this into gen6_upload_wm_push_constants(), because
- * according to the SNB PRM, vol 2 part 1 section 7.2.2
- * (3DSTATE_CONSTANT_PS [DevSNB]):
+ /* The scissor only needs to handle the intersection of drawable and
+ * scissor rect. Clipping to the boundaries of static shared buffers
+ * for front/back/depth is covered by looping over cliprects in brw_draw.c.
*
- * "[DevSNB]: This packet must be followed by WM_STATE."
+ * Note that the hardware's coordinates are inclusive, while Mesa's min is
+ * inclusive but max is exclusive.
*/
- brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_PS), wmcp) {
- if (wm_prog_data->base.nr_params != 0) {
- wmcp.Buffer0Valid = true;
- /* Pointer to the WM constant buffer. Covered by the set of
- * state flags from gen6_upload_wm_push_constants.
+ for (unsigned i = 0; i < viewport_count; i++) {
+ int bbox[4];
+
+ bbox[0] = MAX2(ctx->ViewportArray[i].X, 0);
+ bbox[1] = MIN2(bbox[0] + ctx->ViewportArray[i].Width, fb_width);
+ bbox[2] = MAX2(ctx->ViewportArray[i].Y, 0);
+ bbox[3] = MIN2(bbox[2] + ctx->ViewportArray[i].Height, fb_height);
+ _mesa_intersect_scissor_bounding_box(ctx, i, bbox);
+
+ if (bbox[0] == bbox[1] || bbox[2] == bbox[3]) {
+ /* If the scissor was out of bounds and got clamped to 0 width/height
+ * at the bounds, the subtraction of 1 from maximums could produce a
+ * negative number and thus not clip anything. Instead, just provide
+ * a min > max scissor inside the bounds, which produces the expected
+ * no rendering.
*/
- wmcp.PointertoPSConstantBuffer0 = stage_state->push_const_offset;
- wmcp.PSConstantBuffer0ReadLength = stage_state->push_const_size - 1;
+ scissor.ScissorRectangleXMin = 1;
+ scissor.ScissorRectangleXMax = 0;
+ scissor.ScissorRectangleYMin = 1;
+ scissor.ScissorRectangleYMax = 0;
+ } else if (render_to_fbo) {
+ /* texmemory: Y=0=bottom */
+ scissor.ScissorRectangleXMin = bbox[0];
+ scissor.ScissorRectangleXMax = bbox[1] - 1;
+ scissor.ScissorRectangleYMin = bbox[2];
+ scissor.ScissorRectangleYMax = bbox[3] - 1;
+ } else {
+ /* memory: Y=0=top */
+ scissor.ScissorRectangleXMin = bbox[0];
+ scissor.ScissorRectangleXMax = bbox[1] - 1;
+ scissor.ScissorRectangleYMin = fb_height - bbox[3];
+ scissor.ScissorRectangleYMax = fb_height - bbox[2] - 1;
}
+
+ GENX(SCISSOR_RECT_pack)(
+ NULL, scissor_map + i * GENX(SCISSOR_RECT_length), &scissor);
}
-#endif
- brw_batch_emit(brw, GENX(3DSTATE_WM), wm) {
- wm.StatisticsEnable = true;
- wm.LineAntialiasingRegionWidth = _10pixels;
- wm.LineEndCapAntialiasingRegionWidth = _05pixels;
+ brw_batch_emit(brw, GENX(3DSTATE_SCISSOR_STATE_POINTERS), ptr) {
+ ptr.ScissorRectPointer = scissor_state_offset;
+ }
+}
-#if GEN_GEN < 7
- if (wm_prog_data->base.use_alt_mode)
- wm.FloatingPointMode = Alternate;
+static const struct brw_tracked_state genX(scissor_state) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_SCISSOR |
+ _NEW_VIEWPORT,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_VIEWPORT_COUNT,
+ },
+ .emit = genX(upload_scissor_state),
+};
+#endif
- wm.SamplerCount = DIV_ROUND_UP(stage_state->sampler_count, 4);
- wm.BindingTableEntryCount = wm_prog_data->base.binding_table.size_bytes / 4;
- wm.MaximumNumberofThreads = devinfo->max_wm_threads - 1;
- wm._8PixelDispatchEnable = wm_prog_data->dispatch_8;
- wm._16PixelDispatchEnable = wm_prog_data->dispatch_16;
- wm.DispatchGRFStartRegisterForConstantSetupData0 =
- wm_prog_data->base.dispatch_grf_start_reg;
- wm.DispatchGRFStartRegisterForConstantSetupData2 =
- wm_prog_data->dispatch_grf_start_reg_2;
- wm.KernelStartPointer0 = stage_state->prog_offset;
- wm.KernelStartPointer2 = stage_state->prog_offset +
- wm_prog_data->prog_offset_2;
- wm.DualSourceBlendEnable =
- wm_prog_data->dual_src_blend && (ctx->Color.BlendEnabled & 1) &&
- ctx->Color.Blend[0]._UsesDualSrc;
- wm.oMaskPresenttoRenderTarget = wm_prog_data->uses_omask;
- wm.NumberofSFOutputAttributes = wm_prog_data->num_varying_inputs;
+/* ---------------------------------------------------------------------- */
- /* From the SNB PRM, volume 2 part 1, page 281:
- * "If the PS kernel does not need the Position XY Offsets
- * to compute a Position XY value, then this field should be
- * programmed to POSOFFSET_NONE."
- *
- * "SW Recommendation: If the PS kernel needs the Position Offsets
- * to compute a Position XY value, this field should match Position
- * ZW Interpolation Mode to ensure a consistent position.xyzw
- * computation."
- * We only require XY sample offsets. So, this recommendation doesn't
- * look useful at the moment. We might need this in future.
- */
- if (wm_prog_data->uses_pos_offset)
- wm.PositionXYOffsetSelect = POSOFFSET_SAMPLE;
- else
- wm.PositionXYOffsetSelect = POSOFFSET_NONE;
+#if GEN_GEN >= 7
+UNUSED static const uint32_t push_constant_opcodes[] = {
+ [MESA_SHADER_VERTEX] = 21,
+ [MESA_SHADER_TESS_CTRL] = 25, /* HS */
+ [MESA_SHADER_TESS_EVAL] = 26, /* DS */
+ [MESA_SHADER_GEOMETRY] = 22,
+ [MESA_SHADER_FRAGMENT] = 23,
+ [MESA_SHADER_COMPUTE] = 0,
+};
- if (wm_prog_data->base.total_scratch) {
- wm.ScratchSpaceBasePointer =
- render_bo(stage_state->scratch_bo,
- ffs(stage_state->per_thread_scratch) - 11);
+static void
+upload_constant_state(struct brw_context *brw,
+ struct brw_stage_state *stage_state,
+ bool active, uint32_t stage)
+{
+ UNUSED uint32_t mocs = GEN_GEN < 8 ? GEN7_MOCS_L3 : 0;
+ active = active && stage_state->push_const_size != 0;
+
+ brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_VS), pkt) {
+ pkt._3DCommandSubOpcode = push_constant_opcodes[stage];
+ if (active) {
+#if GEN_GEN >= 9
+ pkt.ConstantBody.ConstantBuffer2ReadLength =
+ stage_state->push_const_size;
+ pkt.ConstantBody.PointerToConstantBuffer2 =
+ render_ro_bo(brw->batch.bo, stage_state->push_const_offset);
+#else
+ pkt.ConstantBody.ConstantBuffer0ReadLength =
+ stage_state->push_const_size;
+ pkt.ConstantBody.PointerToConstantBuffer0.offset =
+ stage_state->push_const_offset | mocs;
+#endif
}
+ }
- wm.PixelShaderComputedDepth = writes_depth;
+ brw->ctx.NewDriverState |= GEN_GEN >= 9 ? BRW_NEW_SURFACES : 0;
+}
#endif
- wm.PointRasterizationRule = RASTRULE_UPPER_RIGHT;
+#if GEN_GEN >= 6
+static void
+genX(upload_vs_push_constants)(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->vs.base;
- /* _NEW_LINE */
- wm.LineStippleEnable = ctx->Line.StippleFlag;
+ /* _BRW_NEW_VERTEX_PROGRAM */
+ const struct brw_program *vp = brw_program_const(brw->vertex_program);
+ /* BRW_NEW_VS_PROG_DATA */
+ const struct brw_stage_prog_data *prog_data = brw->vs.base.prog_data;
- /* _NEW_POLYGON */
- wm.PolygonStippleEnable = ctx->Polygon.StippleFlag;
- wm.BarycentricInterpolationMode = wm_prog_data->barycentric_interp_modes;
+ _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_VERTEX);
+ gen6_upload_push_constants(brw, &vp->program, prog_data, stage_state);
-#if GEN_GEN < 8
- /* _NEW_BUFFERS */
- const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
+#if GEN_GEN >= 7
+ if (GEN_GEN == 7 && !GEN_IS_HASWELL && !brw->is_baytrail)
+ gen7_emit_vs_workaround_flush(brw);
- wm.PixelShaderUsesSourceDepth = wm_prog_data->uses_src_depth;
- wm.PixelShaderUsesSourceW = wm_prog_data->uses_src_w;
- if (wm_prog_data->uses_kill ||
- _mesa_is_alpha_test_enabled(ctx) ||
- _mesa_is_alpha_to_coverage_enabled(ctx) ||
- wm_prog_data->uses_omask) {
- wm.PixelShaderKillsPixel = true;
- }
+ upload_constant_state(brw, stage_state, true /* active */,
+ MESA_SHADER_VERTEX);
+#endif
+}
- /* _NEW_BUFFERS | _NEW_COLOR */
- if (brw_color_buffer_write_enabled(brw) || writes_depth ||
- wm_prog_data->has_side_effects || wm.PixelShaderKillsPixel) {
- wm.ThreadDispatchEnable = true;
- }
- if (multisampled_fbo) {
- /* _NEW_MULTISAMPLE */
- if (ctx->Multisample.Enabled)
- wm.MultisampleRasterizationMode = MSRASTMODE_ON_PATTERN;
- else
- wm.MultisampleRasterizationMode = MSRASTMODE_OFF_PIXEL;
+static const struct brw_tracked_state genX(vs_push_constants) = {
+ .dirty = {
+ .mesa = _NEW_PROGRAM_CONSTANTS |
+ _NEW_TRANSFORM,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION |
+ BRW_NEW_VERTEX_PROGRAM |
+ BRW_NEW_VS_PROG_DATA,
+ },
+ .emit = genX(upload_vs_push_constants),
+};
- if (wm_prog_data->persample_dispatch)
- wm.MultisampleDispatchMode = MSDISPMODE_PERSAMPLE;
- else
- wm.MultisampleDispatchMode = MSDISPMODE_PERPIXEL;
- } else {
- wm.MultisampleRasterizationMode = MSRASTMODE_OFF_PIXEL;
- wm.MultisampleDispatchMode = MSDISPMODE_PERSAMPLE;
- }
+static void
+genX(upload_gs_push_constants)(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->gs.base;
-#if GEN_GEN >= 7
- wm.PixelShaderComputedDepthMode = wm_prog_data->computed_depth_mode;
- wm.PixelShaderUsesInputCoverageMask = wm_prog_data->uses_sample_mask;
-#endif
+ /* BRW_NEW_GEOMETRY_PROGRAM */
+ const struct brw_program *gp = brw_program_const(brw->geometry_program);
- /* The "UAV access enable" bits are unnecessary on HSW because they only
- * seem to have an effect on the HW-assisted coherency mechanism which we
- * don't need, and the rasterization-related UAV_ONLY flag and the
- * DISPATCH_ENABLE bit can be set independently from it.
- * C.f. gen8_upload_ps_extra().
- *
- * BRW_NEW_FRAGMENT_PROGRAM | BRW_NEW_FS_PROG_DATA | _NEW_BUFFERS |
- * _NEW_COLOR
- */
-#if GEN_IS_HASWELL
- if (!(brw_color_buffer_write_enabled(brw) || writes_depth) &&
- wm_prog_data->has_side_effects)
- wm.PSUAVonly = ON;
-#endif
-#endif
+ if (gp) {
+ /* BRW_NEW_GS_PROG_DATA */
+ struct brw_stage_prog_data *prog_data = brw->gs.base.prog_data;
+
+ _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_GEOMETRY);
+ gen6_upload_push_constants(brw, &gp->program, prog_data, stage_state);
+ }
#if GEN_GEN >= 7
- /* BRW_NEW_FS_PROG_DATA */
- if (wm_prog_data->early_fragment_tests)
- wm.EarlyDepthStencilControl = EDSC_PREPS;
- else if (wm_prog_data->has_side_effects)
- wm.EarlyDepthStencilControl = EDSC_PSEXEC;
+ upload_constant_state(brw, stage_state, gp, MESA_SHADER_GEOMETRY);
#endif
- }
}
-static const struct brw_tracked_state genX(wm_state) = {
+static const struct brw_tracked_state genX(gs_push_constants) = {
.dirty = {
- .mesa = _NEW_LINE |
- _NEW_POLYGON |
- (GEN_GEN < 8 ? _NEW_BUFFERS |
- _NEW_COLOR |
- _NEW_MULTISAMPLE :
- 0) |
- (GEN_GEN < 7 ? _NEW_PROGRAM_CONSTANTS : 0),
- .brw = BRW_NEW_BLORP |
- BRW_NEW_FS_PROG_DATA |
- (GEN_GEN < 7 ? BRW_NEW_PUSH_CONSTANT_ALLOCATION |
- BRW_NEW_BATCH
- : BRW_NEW_CONTEXT),
+ .mesa = _NEW_PROGRAM_CONSTANTS |
+ _NEW_TRANSFORM,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_GEOMETRY_PROGRAM |
+ BRW_NEW_GS_PROG_DATA |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION,
},
- .emit = genX(upload_wm),
+ .emit = genX(upload_gs_push_constants),
};
-/* ---------------------------------------------------------------------- */
+static void
+genX(upload_wm_push_constants)(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->wm.base;
+ /* BRW_NEW_FRAGMENT_PROGRAM */
+ const struct brw_program *fp = brw_program_const(brw->fragment_program);
+ /* BRW_NEW_FS_PROG_DATA */
+ const struct brw_stage_prog_data *prog_data = brw->wm.base.prog_data;
-#define INIT_THREAD_DISPATCH_FIELDS(pkt, prefix) \
- pkt.KernelStartPointer = stage_state->prog_offset; \
- pkt.SamplerCount = \
- DIV_ROUND_UP(CLAMP(stage_state->sampler_count, 0, 16), 4); \
- pkt.BindingTableEntryCount = \
- stage_prog_data->binding_table.size_bytes / 4; \
- pkt.FloatingPointMode = stage_prog_data->use_alt_mode; \
- \
- if (stage_prog_data->total_scratch) { \
- pkt.ScratchSpaceBasePointer = \
- render_bo(stage_state->scratch_bo, 0); \
- pkt.PerThreadScratchSpace = \
- ffs(stage_state->per_thread_scratch) - 11; \
- } \
- \
- pkt.DispatchGRFStartRegisterForURBData = \
- stage_prog_data->dispatch_grf_start_reg; \
- pkt.prefix##URBEntryReadLength = vue_prog_data->urb_read_length; \
- pkt.prefix##URBEntryReadOffset = 0; \
- \
- pkt.StatisticsEnable = true; \
- pkt.Enable = true;
+ _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_FRAGMENT);
+
+ gen6_upload_push_constants(brw, &fp->program, prog_data, stage_state);
+
+#if GEN_GEN >= 7
+ upload_constant_state(brw, stage_state, true, MESA_SHADER_FRAGMENT);
+#endif
+}
+
+static const struct brw_tracked_state genX(wm_push_constants) = {
+ .dirty = {
+ .mesa = _NEW_PROGRAM_CONSTANTS,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_FRAGMENT_PROGRAM |
+ BRW_NEW_FS_PROG_DATA |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION,
+ },
+ .emit = genX(upload_wm_push_constants),
+};
+#endif
+/* ---------------------------------------------------------------------- */
-static void
-genX(upload_vs_state)(struct brw_context *brw)
+#if GEN_GEN >= 6
+static unsigned
+genX(determine_sample_mask)(struct brw_context *brw)
{
- const struct gen_device_info *devinfo = &brw->screen->devinfo;
- const struct brw_stage_state *stage_state = &brw->vs.base;
+ struct gl_context *ctx = &brw->ctx;
+ float coverage = 1.0f;
+ float coverage_invert = false;
+ unsigned sample_mask = ~0u;
- /* BRW_NEW_VS_PROG_DATA */
- const struct brw_vue_prog_data *vue_prog_data =
- brw_vue_prog_data(brw->vs.base.prog_data);
- const struct brw_stage_prog_data *stage_prog_data = &vue_prog_data->base;
+ /* BRW_NEW_NUM_SAMPLES */
+ unsigned num_samples = brw->num_samples;
- assert(vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ||
- vue_prog_data->dispatch_mode == DISPATCH_MODE_4X2_DUAL_OBJECT);
+ if (_mesa_is_multisample_enabled(ctx)) {
+ if (ctx->Multisample.SampleCoverage) {
+ coverage = ctx->Multisample.SampleCoverageValue;
+ coverage_invert = ctx->Multisample.SampleCoverageInvert;
+ }
+ if (ctx->Multisample.SampleMask) {
+ sample_mask = ctx->Multisample.SampleMaskValue;
+ }
+ }
- /* From the BSpec, 3D Pipeline > Geometry > Vertex Shader > State,
- * 3DSTATE_VS, Dword 5.0 "VS Function Enable":
- *
- * [DevSNB] A pipeline flush must be programmed prior to a 3DSTATE_VS
- * command that causes the VS Function Enable to toggle. Pipeline
- * flush can be executed by sending a PIPE_CONTROL command with CS
- * stall bit set and a post sync operation.
- *
- * We've already done such a flush at the start of state upload, so we
- * don't need to do another one here.
- */
+ if (num_samples > 1) {
+ int coverage_int = (int) (num_samples * coverage + 0.5f);
+ uint32_t coverage_bits = (1 << coverage_int) - 1;
+ if (coverage_invert)
+ coverage_bits ^= (1 << num_samples) - 1;
+ return coverage_bits & sample_mask;
+ } else {
+ return 1;
+ }
+}
-#if GEN_GEN < 7
- brw_batch_emit(brw, GENX(3DSTATE_CONSTANT_VS), cvs) {
- if (stage_state->push_const_size != 0) {
- cvs.Buffer0Valid = true;
- cvs.PointertoVSConstantBuffer0 = stage_state->push_const_offset;
- cvs.VSConstantBuffer0ReadLength = stage_state->push_const_size - 1;
+static void
+genX(emit_3dstate_multisample2)(struct brw_context *brw,
+ unsigned num_samples)
+{
+ assert(brw->num_samples <= 16);
+
+ unsigned log2_samples = ffs(MAX2(num_samples, 1)) - 1;
+
+ brw_batch_emit(brw, GENX(3DSTATE_MULTISAMPLE), multi) {
+ multi.PixelLocation = CENTER;
+ multi.NumberofMultisamples = log2_samples;
+#if GEN_GEN == 6
+ GEN_SAMPLE_POS_4X(multi.Sample);
+#elif GEN_GEN == 7
+ switch (num_samples) {
+ case 1:
+ GEN_SAMPLE_POS_1X(multi.Sample);
+ break;
+ case 2:
+ GEN_SAMPLE_POS_2X(multi.Sample);
+ break;
+ case 4:
+ GEN_SAMPLE_POS_4X(multi.Sample);
+ break;
+ case 8:
+ GEN_SAMPLE_POS_8X(multi.Sample);
+ break;
+ default:
+ break;
}
- }
#endif
+ }
+}
- if (GEN_GEN == 7 && devinfo->is_ivybridge)
- gen7_emit_vs_workaround_flush(brw);
+static void
+genX(upload_multisample_state)(struct brw_context *brw)
+{
+ genX(emit_3dstate_multisample2)(brw, brw->num_samples);
- brw_batch_emit(brw, GENX(3DSTATE_VS), vs) {
- INIT_THREAD_DISPATCH_FIELDS(vs, Vertex);
+ brw_batch_emit(brw, GENX(3DSTATE_SAMPLE_MASK), sm) {
+ sm.SampleMask = genX(determine_sample_mask)(brw);
+ }
+}
- vs.MaximumNumberofThreads = devinfo->max_vs_threads - 1;
+static const struct brw_tracked_state genX(multisample_state) = {
+ .dirty = {
+ .mesa = _NEW_MULTISAMPLE,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_NUM_SAMPLES,
+ },
+ .emit = genX(upload_multisample_state)
+};
+#endif
-#if GEN_GEN >= 8
- vs.SIMD8DispatchEnable =
- vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8;
+/* ---------------------------------------------------------------------- */
- vs.UserClipDistanceCullTestEnableBitmask =
- vue_prog_data->cull_distance_mask;
+#if GEN_GEN >= 6
+static void
+genX(upload_color_calc_state)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ brw_state_emit(brw, GENX(COLOR_CALC_STATE), 64, &brw->cc.state_offset, cc) {
+ /* _NEW_COLOR */
+ cc.AlphaTestFormat = ALPHATEST_UNORM8;
+ UNCLAMPED_FLOAT_TO_UBYTE(cc.AlphaReferenceValueAsUNORM8,
+ ctx->Color.AlphaRef);
+
+#if GEN_GEN < 9
+ /* _NEW_STENCIL */
+ cc.StencilReferenceValue = _mesa_get_stencil_ref(ctx, 0);
+ cc.BackfaceStencilReferenceValue =
+ _mesa_get_stencil_ref(ctx, ctx->Stencil._BackFace);
#endif
+
+ /* _NEW_COLOR */
+ cc.BlendConstantColorRed = ctx->Color.BlendColorUnclamped[0];
+ cc.BlendConstantColorGreen = ctx->Color.BlendColorUnclamped[1];
+ cc.BlendConstantColorBlue = ctx->Color.BlendColorUnclamped[2];
+ cc.BlendConstantColorAlpha = ctx->Color.BlendColorUnclamped[3];
}
-#if GEN_GEN < 7
- /* Based on my reading of the simulator, the VS constants don't get
- * pulled into the VS FF unit until an appropriate pipeline flush
- * happens, and instead the 3DSTATE_CONSTANT_VS packet just adds
- * references to them into a little FIFO. The flushes are common,
- * but don't reliably happen between this and a 3DPRIMITIVE, causing
- * the primitive to use the wrong constants. Then the FIFO
- * containing the constant setup gets added to again on the next
- * constants change, and eventually when a flush does happen the
- * unit is overwhelmed by constant changes and dies.
- *
- * To avoid this, send a PIPE_CONTROL down the line that will
- * update the unit immediately loading the constants. The flush
- * type bits here were those set by the STATE_BASE_ADDRESS whose
- * move in a82a43e8d99e1715dd11c9c091b5ab734079b6a6 triggered the
- * bug reports that led to this workaround, and may be more than
- * what is strictly required to avoid the issue.
- */
- brw_emit_pipe_control_flush(brw,
- PIPE_CONTROL_DEPTH_STALL |
- PIPE_CONTROL_INSTRUCTION_INVALIDATE |
- PIPE_CONTROL_STATE_CACHE_INVALIDATE);
+ brw_batch_emit(brw, GENX(3DSTATE_CC_STATE_POINTERS), ptr) {
+ ptr.ColorCalcStatePointer = brw->cc.state_offset;
+#if GEN_GEN != 7
+ ptr.ColorCalcStatePointerValid = true;
#endif
+ }
}
-static const struct brw_tracked_state genX(vs_state) = {
+static const struct brw_tracked_state genX(color_calc_state) = {
.dirty = {
- .mesa = (GEN_GEN < 7 ? (_NEW_PROGRAM_CONSTANTS | _NEW_TRANSFORM) : 0),
- .brw = BRW_NEW_BATCH |
- BRW_NEW_BLORP |
- BRW_NEW_CONTEXT |
- BRW_NEW_VS_PROG_DATA |
- (GEN_GEN < 7 ? BRW_NEW_PUSH_CONSTANT_ALLOCATION |
- BRW_NEW_VERTEX_PROGRAM
- : 0),
+ .mesa = _NEW_COLOR |
+ _NEW_STENCIL,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_CC_STATE |
+ BRW_NEW_STATE_BASE_ADDRESS,
},
- .emit = genX(upload_vs_state),
+ .emit = genX(upload_color_calc_state),
};
#endif
},
.emit = genX(upload_sbe),
};
+#endif
/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 7
/**
* Outputs the 3DSTATE_SO_DECL_LIST command.
*
},
.emit = genX(upload_sol),
};
+#endif
/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 7
static void
genX(upload_ps)(struct brw_context *brw)
{
/* _NEW_BUFFERS, _NEW_MULTISAMPLE */
#if GEN_IS_HASWELL
- ps.SampleMask = gen6_determine_sample_mask(brw);
+ ps.SampleMask = genX(determine_sample_mask(brw));
#endif
/* 3DSTATE_PS expects the number of threads per PSD, which is always 64;
},
.emit = genX(upload_ps),
};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN >= 7
+static void
+genX(upload_hs_state)(struct brw_context *brw)
+{
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ struct brw_stage_state *stage_state = &brw->tcs.base;
+ struct brw_stage_prog_data *stage_prog_data = stage_state->prog_data;
+ const struct brw_vue_prog_data *vue_prog_data =
+ brw_vue_prog_data(stage_prog_data);
+
+ /* BRW_NEW_TES_PROG_DATA */
+ struct brw_tcs_prog_data *tcs_prog_data =
+ brw_tcs_prog_data(stage_prog_data);
+
+ if (!tcs_prog_data) {
+ brw_batch_emit(brw, GENX(3DSTATE_HS), hs);
+ } else {
+ brw_batch_emit(brw, GENX(3DSTATE_HS), hs) {
+ INIT_THREAD_DISPATCH_FIELDS(hs, Vertex);
+
+ hs.InstanceCount = tcs_prog_data->instances - 1;
+ hs.IncludeVertexHandles = true;
+
+ hs.MaximumNumberofThreads = devinfo->max_tcs_threads - 1;
+ }
+ }
+}
+
+static const struct brw_tracked_state genX(hs_state) = {
+ .dirty = {
+ .mesa = 0,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_TCS_PROG_DATA |
+ BRW_NEW_TESS_PROGRAMS,
+ },
+ .emit = genX(upload_hs_state),
+};
+
+static void
+genX(upload_ds_state)(struct brw_context *brw)
+{
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ const struct brw_stage_state *stage_state = &brw->tes.base;
+ struct brw_stage_prog_data *stage_prog_data = stage_state->prog_data;
+
+ /* BRW_NEW_TES_PROG_DATA */
+ const struct brw_tes_prog_data *tes_prog_data =
+ brw_tes_prog_data(stage_prog_data);
+ const struct brw_vue_prog_data *vue_prog_data =
+ brw_vue_prog_data(stage_prog_data);
+
+ if (!tes_prog_data) {
+ brw_batch_emit(brw, GENX(3DSTATE_DS), ds);
+ } else {
+ brw_batch_emit(brw, GENX(3DSTATE_DS), ds) {
+ INIT_THREAD_DISPATCH_FIELDS(ds, Patch);
+
+ ds.MaximumNumberofThreads = devinfo->max_tes_threads - 1;
+ ds.ComputeWCoordinateEnable =
+ tes_prog_data->domain == BRW_TESS_DOMAIN_TRI;
+
+#if GEN_GEN >= 8
+ if (vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8)
+ ds.DispatchMode = DISPATCH_MODE_SIMD8_SINGLE_PATCH;
+ ds.UserClipDistanceCullTestEnableBitmask =
+ vue_prog_data->cull_distance_mask;
+#endif
+ }
+ }
+}
+
+static const struct brw_tracked_state genX(ds_state) = {
+ .dirty = {
+ .mesa = 0,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_TESS_PROGRAMS |
+ BRW_NEW_TES_PROG_DATA,
+ },
+ .emit = genX(upload_ds_state),
+};
+
+/* ---------------------------------------------------------------------- */
+
+static void
+upload_te_state(struct brw_context *brw)
+{
+ /* BRW_NEW_TESS_PROGRAMS */
+ bool active = brw->tess_eval_program;
+
+ /* BRW_NEW_TES_PROG_DATA */
+ const struct brw_tes_prog_data *tes_prog_data =
+ brw_tes_prog_data(brw->tes.base.prog_data);
+
+ if (active) {
+ brw_batch_emit(brw, GENX(3DSTATE_TE), te) {
+ te.Partitioning = tes_prog_data->partitioning;
+ te.OutputTopology = tes_prog_data->output_topology;
+ te.TEDomain = tes_prog_data->domain;
+ te.TEEnable = true;
+ te.MaximumTessellationFactorOdd = 63.0;
+ te.MaximumTessellationFactorNotOdd = 64.0;
+ }
+ } else {
+ brw_batch_emit(brw, GENX(3DSTATE_TE), te);
+ }
+}
+
+static const struct brw_tracked_state genX(te_state) = {
+ .dirty = {
+ .mesa = 0,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_TES_PROG_DATA |
+ BRW_NEW_TESS_PROGRAMS,
+ },
+ .emit = upload_te_state,
+};
+
+/* ---------------------------------------------------------------------- */
+
+static void
+genX(upload_tes_push_constants)(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->tes.base;
+ /* BRW_NEW_TESS_PROGRAMS */
+ const struct brw_program *tep = brw_program_const(brw->tess_eval_program);
+
+ if (tep) {
+ /* BRW_NEW_TES_PROG_DATA */
+ const struct brw_stage_prog_data *prog_data = brw->tes.base.prog_data;
+ _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_TESS_EVAL);
+ gen6_upload_push_constants(brw, &tep->program, prog_data, stage_state);
+ }
+
+ upload_constant_state(brw, stage_state, tep, MESA_SHADER_TESS_EVAL);
+}
+
+static const struct brw_tracked_state genX(tes_push_constants) = {
+ .dirty = {
+ .mesa = _NEW_PROGRAM_CONSTANTS,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION |
+ BRW_NEW_TESS_PROGRAMS |
+ BRW_NEW_TES_PROG_DATA,
+ },
+ .emit = genX(upload_tes_push_constants),
+};
+static void
+genX(upload_tcs_push_constants)(struct brw_context *brw)
+{
+ struct brw_stage_state *stage_state = &brw->tcs.base;
+ /* BRW_NEW_TESS_PROGRAMS */
+ const struct brw_program *tcp = brw_program_const(brw->tess_ctrl_program);
+ bool active = brw->tess_eval_program;
+
+ if (active) {
+ /* BRW_NEW_TCS_PROG_DATA */
+ const struct brw_stage_prog_data *prog_data = brw->tcs.base.prog_data;
+
+ _mesa_shader_write_subroutine_indices(&brw->ctx, MESA_SHADER_TESS_CTRL);
+ gen6_upload_push_constants(brw, &tcp->program, prog_data, stage_state);
+ }
+
+ upload_constant_state(brw, stage_state, active, MESA_SHADER_TESS_CTRL);
+}
+
+static const struct brw_tracked_state genX(tcs_push_constants) = {
+ .dirty = {
+ .mesa = _NEW_PROGRAM_CONSTANTS,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_DEFAULT_TESS_LEVELS |
+ BRW_NEW_PUSH_CONSTANT_ALLOCATION |
+ BRW_NEW_TESS_PROGRAMS |
+ BRW_NEW_TCS_PROG_DATA,
+ },
+ .emit = genX(upload_tcs_push_constants),
+};
#endif
/* ---------------------------------------------------------------------- */
},
.emit = genX(upload_raster),
};
+#endif
/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 8
static void
genX(upload_ps_extra)(struct brw_context *brw)
{
/* ---------------------------------------------------------------------- */
+#if GEN_GEN >= 8
+static void
+genX(upload_ps_blend)(struct brw_context *brw)
+{
+ struct gl_context *ctx = &brw->ctx;
+
+ /* _NEW_BUFFERS */
+ struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
+ const bool buffer0_is_integer = ctx->DrawBuffer->_IntegerBuffers & 0x1;
+
+ /* _NEW_COLOR */
+ struct gl_colorbuffer_attrib *color = &ctx->Color;
+
+ brw_batch_emit(brw, GENX(3DSTATE_PS_BLEND), pb) {
+ /* BRW_NEW_FRAGMENT_PROGRAM | _NEW_BUFFERS | _NEW_COLOR */
+ pb.HasWriteableRT = brw_color_buffer_write_enabled(brw);
+
+ if (!buffer0_is_integer) {
+ /* _NEW_MULTISAMPLE */
+ pb.AlphaToCoverageEnable =
+ _mesa_is_multisample_enabled(ctx) &&
+ ctx->Multisample.SampleAlphaToCoverage;
+
+ pb.AlphaTestEnable = color->AlphaEnabled;
+ }
+
+ /* Used for implementing the following bit of GL_EXT_texture_integer:
+ * "Per-fragment operations that require floating-point color
+ * components, including multisample alpha operations, alpha test,
+ * blending, and dithering, have no effect when the corresponding
+ * colors are written to an integer color buffer."
+ *
+ * The OpenGL specification 3.3 (page 196), section 4.1.3 says:
+ * "If drawbuffer zero is not NONE and the buffer it references has an
+ * integer format, the SAMPLE_ALPHA_TO_COVERAGE and SAMPLE_ALPHA_TO_ONE
+ * operations are skipped."
+ */
+ if (rb && !buffer0_is_integer && (color->BlendEnabled & 1)) {
+ GLenum eqRGB = color->Blend[0].EquationRGB;
+ GLenum eqA = color->Blend[0].EquationA;
+ GLenum srcRGB = color->Blend[0].SrcRGB;
+ GLenum dstRGB = color->Blend[0].DstRGB;
+ GLenum srcA = color->Blend[0].SrcA;
+ GLenum dstA = color->Blend[0].DstA;
+
+ if (eqRGB == GL_MIN || eqRGB == GL_MAX)
+ srcRGB = dstRGB = GL_ONE;
+
+ if (eqA == GL_MIN || eqA == GL_MAX)
+ srcA = dstA = GL_ONE;
+
+ /* Due to hardware limitations, the destination may have information
+ * in an alpha channel even when the format specifies no alpha
+ * channel. In order to avoid getting any incorrect blending due to
+ * that alpha channel, coerce the blend factors to values that will
+ * not read the alpha channel, but will instead use the correct
+ * implicit value for alpha.
+ */
+ if (!_mesa_base_format_has_channel(rb->_BaseFormat,
+ GL_TEXTURE_ALPHA_TYPE)) {
+ srcRGB = brw_fix_xRGB_alpha(srcRGB);
+ srcA = brw_fix_xRGB_alpha(srcA);
+ dstRGB = brw_fix_xRGB_alpha(dstRGB);
+ dstA = brw_fix_xRGB_alpha(dstA);
+ }
+
+ pb.ColorBufferBlendEnable = true;
+ pb.SourceAlphaBlendFactor = brw_translate_blend_factor(srcA);
+ pb.DestinationAlphaBlendFactor = brw_translate_blend_factor(dstA);
+ pb.SourceBlendFactor = brw_translate_blend_factor(srcRGB);
+ pb.DestinationBlendFactor = brw_translate_blend_factor(dstRGB);
+
+ pb.IndependentAlphaBlendEnable =
+ srcA != srcRGB || dstA != dstRGB || eqA != eqRGB;
+ }
+ }
+}
+
+static const struct brw_tracked_state genX(ps_blend) = {
+ .dirty = {
+ .mesa = _NEW_BUFFERS |
+ _NEW_COLOR |
+ _NEW_MULTISAMPLE,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_FRAGMENT_PROGRAM,
+ },
+ .emit = genX(upload_ps_blend)
+};
+
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+#if GEN_GEN == 6
+static void
+genX(upload_viewport_state_pointers)(struct brw_context *brw)
+{
+ brw_batch_emit(brw, GENX(3DSTATE_VIEWPORT_STATE_POINTERS), vp) {
+ vp.CCViewportStateChange = 1;
+ vp.SFViewportStateChange = 1;
+ vp.CLIPViewportStateChange = 1;
+ vp.PointertoCLIP_VIEWPORT = brw->clip.vp_offset;
+ vp.PointertoSF_VIEWPORT = brw->sf.vp_offset;
+ vp.PointertoCC_VIEWPORT = brw->cc.vp_offset;
+ }
+}
+
+static const struct brw_tracked_state genX(viewport_state) = {
+ .dirty = {
+ .mesa = 0,
+ .brw = BRW_NEW_BATCH |
+ BRW_NEW_BLORP |
+ BRW_NEW_CC_VP |
+ BRW_NEW_CLIP_VP |
+ BRW_NEW_SF_VP |
+ BRW_NEW_STATE_BASE_ADDRESS,
+ },
+ .emit = genX(upload_viewport_state_pointers),
+};
+#endif
+
+/* ---------------------------------------------------------------------- */
+
void
genX(init_atoms)(struct brw_context *brw)
{
&brw_depthbuffer,
- &brw_polygon_stipple,
- &brw_polygon_stipple_offset,
+ &genX(polygon_stipple),
+ &genX(polygon_stipple_offset),
- &brw_line_stipple,
+ &genX(line_stipple),
&brw_psp_urb_cbs,
- &brw_drawing_rect,
+ &genX(drawing_rect),
&brw_indices, /* must come before brw_vertices */
&brw_index_buffer,
- &brw_vertices,
+ &genX(vertices),
&brw_constant_buffer
};
#elif GEN_GEN == 6
static const struct brw_tracked_state *render_atoms[] =
{
- &gen6_sf_and_clip_viewports,
+ &genX(sf_clip_viewport),
/* Command packets: */
&brw_cc_vp,
- &gen6_viewport_state, /* must do after *_vp stages */
+ &genX(viewport_state), /* must do after *_vp stages */
&gen6_urb,
- &gen6_blend_state, /* must do before cc unit */
- &gen6_color_calc_state, /* must do before cc unit */
- &gen6_depth_stencil_state, /* must do before cc unit */
+ &genX(blend_state), /* must do before cc unit */
+ &genX(color_calc_state), /* must do before cc unit */
+ &genX(depth_stencil_state), /* must do before cc unit */
- &gen6_vs_push_constants, /* Before vs_state */
- &gen6_gs_push_constants, /* Before gs_state */
- &gen6_wm_push_constants, /* Before wm_state */
+ &genX(vs_push_constants), /* Before vs_state */
+ &genX(gs_push_constants), /* Before gs_state */
+ &genX(wm_push_constants), /* Before wm_state */
/* Surface state setup. Must come before the VS/WM unit. The binding
* table upload must be last.
&brw_vs_samplers,
&brw_gs_samplers,
&gen6_sampler_state,
- &gen6_multisample_state,
+ &genX(multisample_state),
&genX(vs_state),
- &gen6_gs_state,
+ &genX(gs_state),
&genX(clip_state),
&genX(sf_state),
&genX(wm_state),
- &gen6_scissor_state,
+ &genX(scissor_state),
&gen6_binding_table_pointers,
&brw_depthbuffer,
- &brw_polygon_stipple,
- &brw_polygon_stipple_offset,
+ &genX(polygon_stipple),
+ &genX(polygon_stipple_offset),
- &brw_line_stipple,
+ &genX(line_stipple),
- &brw_drawing_rect,
+ &genX(drawing_rect),
&brw_indices, /* must come before brw_vertices */
&brw_index_buffer,
- &brw_vertices,
+ &genX(vertices),
};
#elif GEN_GEN == 7
static const struct brw_tracked_state *render_atoms[] =
/* Command packets: */
&brw_cc_vp,
- &gen7_sf_clip_viewport,
+ &genX(sf_clip_viewport),
&gen7_l3_state,
&gen7_push_constant_space,
&gen7_urb,
- &gen6_blend_state, /* must do before cc unit */
- &gen6_color_calc_state, /* must do before cc unit */
+ &genX(blend_state), /* must do before cc unit */
+ &genX(color_calc_state), /* must do before cc unit */
&genX(depth_stencil_state), /* must do before cc unit */
&brw_vs_image_surfaces, /* Before vs push/pull constants and binding table */
&brw_gs_image_surfaces, /* Before gs push/pull constants and binding table */
&brw_wm_image_surfaces, /* Before wm push/pull constants and binding table */
- &gen6_vs_push_constants, /* Before vs_state */
- &gen7_tcs_push_constants,
- &gen7_tes_push_constants,
- &gen6_gs_push_constants, /* Before gs_state */
- &gen6_wm_push_constants, /* Before wm_surfaces and constant_buffer */
+ &genX(vs_push_constants), /* Before vs_state */
+ &genX(tcs_push_constants),
+ &genX(tes_push_constants),
+ &genX(gs_push_constants), /* Before gs_state */
+ &genX(wm_push_constants), /* Before wm_surfaces and constant_buffer */
/* Surface state setup. Must come before the VS/WM unit. The binding
* table upload must be last.
&brw_tcs_samplers,
&brw_tes_samplers,
&brw_gs_samplers,
- &gen6_multisample_state,
+ &genX(multisample_state),
&genX(vs_state),
- &gen7_hs_state,
- &gen7_te_state,
- &gen7_ds_state,
- &gen7_gs_state,
+ &genX(hs_state),
+ &genX(te_state),
+ &genX(ds_state),
+ &genX(gs_state),
&genX(sol_state),
&genX(clip_state),
&genX(sbe_state),
&genX(wm_state),
&genX(ps_state),
- &gen6_scissor_state,
+ &genX(scissor_state),
&gen7_depthbuffer,
- &brw_polygon_stipple,
- &brw_polygon_stipple_offset,
+ &genX(polygon_stipple),
+ &genX(polygon_stipple_offset),
- &brw_line_stipple,
+ &genX(line_stipple),
- &brw_drawing_rect,
+ &genX(drawing_rect),
&brw_indices, /* must come before brw_vertices */
&brw_index_buffer,
- &brw_vertices,
+ &genX(vertices),
- &haswell_cut_index,
+#if GEN_IS_HASWELL
+ &genX(cut_index),
+#endif
};
#elif GEN_GEN >= 8
static const struct brw_tracked_state *render_atoms[] =
{
&brw_cc_vp,
- &gen8_sf_clip_viewport,
+ &genX(sf_clip_viewport),
&gen7_l3_state,
&gen7_push_constant_space,
&gen7_urb,
- &gen8_blend_state,
- &gen6_color_calc_state,
+ &genX(blend_state),
+ &genX(color_calc_state),
&brw_vs_image_surfaces, /* Before vs push/pull constants and binding table */
&brw_tcs_image_surfaces, /* Before tcs push/pull constants and binding table */
&brw_gs_image_surfaces, /* Before gs push/pull constants and binding table */
&brw_wm_image_surfaces, /* Before wm push/pull constants and binding table */
- &gen6_vs_push_constants, /* Before vs_state */
- &gen7_tcs_push_constants,
- &gen7_tes_push_constants,
- &gen6_gs_push_constants, /* Before gs_state */
- &gen6_wm_push_constants, /* Before wm_surfaces and constant_buffer */
+ &genX(vs_push_constants), /* Before vs_state */
+ &genX(tcs_push_constants),
+ &genX(tes_push_constants),
+ &genX(gs_push_constants), /* Before gs_state */
+ &genX(wm_push_constants), /* Before wm_surfaces and constant_buffer */
/* Surface state setup. Must come before the VS/WM unit. The binding
* table upload must be last.
&brw_tcs_samplers,
&brw_tes_samplers,
&brw_gs_samplers,
- &gen8_multisample_state,
+ &genX(multisample_state),
&genX(vs_state),
- &gen8_hs_state,
- &gen7_te_state,
- &gen8_ds_state,
- &gen8_gs_state,
+ &genX(hs_state),
+ &genX(te_state),
+ &genX(ds_state),
+ &genX(gs_state),
&genX(sol_state),
&genX(clip_state),
&genX(raster_state),
&genX(sbe_state),
&genX(sf_state),
- &gen8_ps_blend,
+ &genX(ps_blend),
&genX(ps_extra),
&genX(ps_state),
&genX(depth_stencil_state),
&genX(wm_state),
- &gen6_scissor_state,
+ &genX(scissor_state),
&gen7_depthbuffer,
- &brw_polygon_stipple,
- &brw_polygon_stipple_offset,
+ &genX(polygon_stipple),
+ &genX(polygon_stipple_offset),
- &brw_line_stipple,
+ &genX(line_stipple),
- &brw_drawing_rect,
+ &genX(drawing_rect),
&gen8_vf_topology,
&brw_indices,
&gen8_index_buffer,
- &gen8_vertices,
+ &genX(vertices),
- &haswell_cut_index,
+ &genX(cut_index),
&gen8_pma_fix,
};
#endif
projects / mesa.git / blobdiff