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8f5d9f6fd7
static_assert required a message argument until C23. Adding it fixes the debian-clang CI jobs. Signed-off-by: Olivia Lee <olivia.lee@collabora.com> Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38547>
105 lines
3 KiB
C
105 lines
3 KiB
C
/*
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* Copyright 2024 Valve Corporation
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include "compiler/libcl/libcl.h"
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enum poly_tess_partitioning {
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POLY_TESS_PARTITIONING_FRACTIONAL_ODD,
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POLY_TESS_PARTITIONING_FRACTIONAL_EVEN,
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POLY_TESS_PARTITIONING_INTEGER,
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};
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enum poly_tess_mode {
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/* Do not actually tessellate, just write the index counts */
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POLY_TESS_MODE_COUNT,
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/* Tessellate using the count buffers to allocate indices */
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POLY_TESS_MODE_WITH_COUNTS,
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};
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struct poly_tess_point {
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uint32_t u;
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uint32_t v;
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};
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static_assert(sizeof(struct poly_tess_point) == 8,
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"struct poly_tess_point must be 8 bytes");
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struct poly_tess_params {
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/* Heap to allocate tessellator outputs in */
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DEVICE(struct poly_heap) heap;
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/* Patch coordinate buffer, indexed as:
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*
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* coord_allocs[patch_ID] + vertex_in_patch
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*/
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DEVICE(struct poly_tess_point) patch_coord_buffer;
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/* Per-patch index within the heap for the tess coords, written by the
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* tessellator based on the allocated memory.
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*/
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DEVICE(uint32_t) coord_allocs;
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/* Space for output draws from the tessellator. API draw calls. */
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DEVICE(uint32_t) out_draws;
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/* Tessellation control shader output buffer. */
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DEVICE(float) tcs_buffer;
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/* Count buffer. # of indices per patch written here, then prefix summed. */
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DEVICE(uint32_t) counts;
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/* Allocated index buffer for all patches, if we're prefix summing counts */
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DEVICE(uint32_t) index_buffer;
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/* Address of the tess eval invocation counter for implementing pipeline
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* statistics, if active. Zero if inactive. Incremented by tessellator.
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*/
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DEVICE(uint32_t) statistic;
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/* Bitfield of TCS per-vertex outputs */
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uint64_t tcs_per_vertex_outputs;
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/* Default tess levels used in OpenGL when there is no TCS in the pipeline.
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* Unused in Vulkan and OpenGL ES.
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*/
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float tess_level_outer_default[4];
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float tess_level_inner_default[2];
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/* Number of vertices in the input patch */
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uint32_t input_patch_size;
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/* Number of vertices in the TCS output patch */
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uint32_t output_patch_size;
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/* Number of patch constants written by TCS */
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uint32_t tcs_patch_constants;
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/* Number of input patches per instance of the VS/TCS */
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uint32_t patches_per_instance;
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/* Stride between tessellation facotrs in the TCS output buffer. */
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uint32_t tcs_stride_el;
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/* Number of patches being tessellated */
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uint32_t nr_patches;
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/* Partitioning and points mode. These affect per-patch setup code but not
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* the hot tessellation loop so we make them dynamic to reduce tessellator
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* variants.
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*/
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enum poly_tess_partitioning partitioning;
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uint32_t points_mode;
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uint32_t isolines;
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/* When fed into a geometry shader, triangles should be counter-clockwise.
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* The tessellator always produces clockwise triangles, but we can swap
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* dynamically in the TES.
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*/
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uint32_t ccw;
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} PACKED;
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static_assert(sizeof(struct poly_tess_params) == 34 * 4,
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"struct poly_tess_params must be 34 words");
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