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vulkan: Align vertex data

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We align the data to a multiple of vertex stride, that way we use more
memory, but we could compute an offset into the vertex buffer without
changing the offset.
This commit is contained in:
Benjamin Otte 2023-05-18 23:22:25 +02:00
parent d98991a0ad
commit 0e93ad8671
1 changed files with 8 additions and 0 deletions
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8
gsk/vulkan/gskvulkanrenderpass.c
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@ -1621,6 +1621,12 @@ gsk_vulkan_render_pass_upload (GskVulkanRenderPass *self,
}
}
static inline gsize
round_up (gsize number, gsize divisor)
{
return (number + divisor - 1) / divisor * divisor;
}
static gsize
gsk_vulkan_render_pass_count_vertex_data (GskVulkanRenderPass *self)
{
@ -1651,6 +1657,7 @@ gsk_vulkan_render_pass_count_vertex_data (GskVulkanRenderPass *self)
case GSK_VULKAN_OP_CROSS_FADE:
case GSK_VULKAN_OP_BLEND_MODE:
vertex_stride = gsk_vulkan_pipeline_get_vertex_stride (op->render.pipeline);
n_bytes = round_up (n_bytes, vertex_stride);
op->render.vertex_offset = n_bytes;
op->render.vertex_count = vertex_stride;
n_bytes += op->render.vertex_count;
@ -1659,6 +1666,7 @@ gsk_vulkan_render_pass_count_vertex_data (GskVulkanRenderPass *self)
case GSK_VULKAN_OP_TEXT:
case GSK_VULKAN_OP_COLOR_TEXT:
vertex_stride = gsk_vulkan_pipeline_get_vertex_stride (op->render.pipeline);
n_bytes = round_up (n_bytes, vertex_stride);
op->text.vertex_offset = n_bytes;
op->text.vertex_count = vertex_stride * op->text.num_glyphs;
n_bytes += op->text.vertex_count;