Fix issue with index buffers that do not contain 0 index. Use core
BaseVertex functionality to offset index buffer indices, instead of
offsetting vertex buffer to point before the buffer origin.
---
src/gallium/drivers/swr/swr_draw.cpp | 2 +-
src/gallium/drivers/swr/swr_state.cpp | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/swr/swr_draw.cpp
b/src/gallium/drivers/swr/swr_draw.cpp
index c4d5e5c..88000e5 100644
--- a/src/gallium/drivers/swr/swr_draw.cpp
+++ b/src/gallium/drivers/swr/swr_draw.cpp
@@ -200,7 +200,7 @@ swr_draw_vbo(struct pipe_context *pipe, const struct
pipe_draw_info *info)
info->count,
info->instance_count,
info->start,
- info->index_bias,
+ info->index_bias - info->min_index,
info->start_instance);
else
SwrDrawInstanced(ctx->swrContext,
diff --git a/src/gallium/drivers/swr/swr_state.cpp
b/src/gallium/drivers/swr/swr_state.cpp
index f1f4963..f03f814 100644
--- a/src/gallium/drivers/swr/swr_state.cpp
+++ b/src/gallium/drivers/swr/swr_state.cpp
@@ -1133,7 +1133,7 @@ swr_update_derived(struct pipe_context *pipe,
memcpy(scratch, ptr, size);
ptr = scratch;
scratch += size;
- p_data = (const uint8_t *)ptr - base;
+ p_data = (const uint8_t *)ptr;
}
swrVertexBuffers[i] = {0};
--
2.7.4
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