From c4f30a9100bfba7800162bdef267743a2419ec19 Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Thu, 25 Jan 2018 19:15:41 +0100 Subject: spirv: Lower BaseVertex to FIRST_VERTEX instead of BASE_VERTEX The base vertex in Vulkan is different from GL in that for non-indexed primitives the value is taken from the firstVertex parameter instead of being set to zero. This coincides with the new SYSTEM_VALUE_FIRST_VERTEX instead of BASE_VERTEX. v2 (idr): Add comment describing why SYSTEM_VALUE_FIRST_VERTEX is used for SpvBuiltInBaseVertex. Suggested by Jason. Reviewed-by: Ian Romanick [v1] Reviewed-by: Jason Ekstrand --- src/compiler/spirv/vtn_variables.c | 5 ++++- src/intel/vulkan/genX_cmd_buffer.c | 16 ++++++++++++---- src/intel/vulkan/genX_pipeline.c | 2 ++ 3 files changed, 18 insertions(+), 5 deletions(-) diff --git a/src/compiler/spirv/vtn_variables.c b/src/compiler/spirv/vtn_variables.c index 0673fe8067..9679ff6526 100644 --- a/src/compiler/spirv/vtn_variables.c +++ b/src/compiler/spirv/vtn_variables.c @@ -1296,7 +1296,10 @@ vtn_get_builtin_location(struct vtn_builder *b, set_mode_system_value(b, mode); break; case SpvBuiltInBaseVertex: - *location = SYSTEM_VALUE_BASE_VERTEX; + /* OpenGL gl_BaseVertex (SYSTEM_VALUE_BASE_VERTEX) is not the same + * semantic as SPIR-V BaseVertex (SYSTEM_VALUE_FIRST_VERTEX). + */ + *location = SYSTEM_VALUE_FIRST_VERTEX; set_mode_system_value(b, mode); break; case SpvBuiltInBaseInstance: diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c index cbe623802e..be4e9a6942 100644 --- a/src/intel/vulkan/genX_cmd_buffer.c +++ b/src/intel/vulkan/genX_cmd_buffer.c @@ -2673,7 +2673,9 @@ void genX(CmdDraw)( genX(cmd_buffer_flush_state)(cmd_buffer); - if (vs_prog_data->uses_basevertex || vs_prog_data->uses_baseinstance) + if (vs_prog_data->uses_firstvertex || + vs_prog_data->uses_basevertex || + vs_prog_data->uses_baseinstance) emit_base_vertex_instance(cmd_buffer, firstVertex, firstInstance); if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, 0); @@ -2711,7 +2713,9 @@ void genX(CmdDrawIndexed)( genX(cmd_buffer_flush_state)(cmd_buffer); - if (vs_prog_data->uses_basevertex || vs_prog_data->uses_baseinstance) + if (vs_prog_data->uses_firstvertex || + vs_prog_data->uses_basevertex || + vs_prog_data->uses_baseinstance) emit_base_vertex_instance(cmd_buffer, vertexOffset, firstInstance); if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, 0); @@ -2850,7 +2854,9 @@ void genX(CmdDrawIndirect)( struct anv_bo *bo = buffer->bo; uint32_t bo_offset = buffer->offset + offset; - if (vs_prog_data->uses_basevertex || vs_prog_data->uses_baseinstance) + if (vs_prog_data->uses_firstvertex || + vs_prog_data->uses_basevertex || + vs_prog_data->uses_baseinstance) emit_base_vertex_instance_bo(cmd_buffer, bo, bo_offset + 8); if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, i); @@ -2889,7 +2895,9 @@ void genX(CmdDrawIndexedIndirect)( uint32_t bo_offset = buffer->offset + offset; /* TODO: We need to stomp base vertex to 0 somehow */ - if (vs_prog_data->uses_basevertex || vs_prog_data->uses_baseinstance) + if (vs_prog_data->uses_firstvertex || + vs_prog_data->uses_basevertex || + vs_prog_data->uses_baseinstance) emit_base_vertex_instance_bo(cmd_buffer, bo, bo_offset + 12); if (vs_prog_data->uses_drawid) emit_draw_index(cmd_buffer, i); diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c index eb2d414735..a473f42c7e 100644 --- a/src/intel/vulkan/genX_pipeline.c +++ b/src/intel/vulkan/genX_pipeline.c @@ -98,6 +98,7 @@ emit_vertex_input(struct anv_pipeline *pipeline, const bool needs_svgs_elem = vs_prog_data->uses_vertexid || vs_prog_data->uses_instanceid || vs_prog_data->uses_basevertex || + vs_prog_data->uses_firstvertex || vs_prog_data->uses_baseinstance; uint32_t elem_count = __builtin_popcount(elements) - @@ -178,6 +179,7 @@ emit_vertex_input(struct anv_pipeline *pipeline, * well. Just do all or nothing. */ uint32_t base_ctrl = (vs_prog_data->uses_basevertex || + vs_prog_data->uses_firstvertex || vs_prog_data->uses_baseinstance) ? VFCOMP_STORE_SRC : VFCOMP_STORE_0; -- cgit v1.2.3