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Fix T70463 GPU: Very Slow Workbench/Eevee Performance

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This commit is contained in:
Clément Foucault 2019-10-04 16:29:41 +02:00
parent 56dd7feb06
commit 663d23dd9d
1 changed files with 5 additions and 2 deletions
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7
source/blender/gpu/intern/gpu_batch.c
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@ -856,16 +856,19 @@ void GPU_draw_list_submit(GPUDrawList *list)
uintptr_t offset = list->cmd_offset;
uint cmd_len = list->cmd_len;
size_t bytes_used = cmd_len * sizeof(GPUDrawCommandIndexed);
list->cmd_offset += bytes_used;
list->cmd_len = 0; /* Avoid reuse. */
if (USE_MULTI_DRAW_INDIRECT) {
/* Only do multidraw indirect if doing more than 2 drawcall.
* This avoids the overhead of buffer mapping if scene is
* not very instance friendly. */
if (USE_MULTI_DRAW_INDIRECT && cmd_len > 2) {
GLenum prim = batch->gl_prim_type;
glBindBuffer(GL_DRAW_INDIRECT_BUFFER, list->buffer_id);
glFlushMappedBufferRange(GL_DRAW_INDIRECT_BUFFER, 0, bytes_used);
glUnmapBuffer(GL_DRAW_INDIRECT_BUFFER);
list->commands = NULL; /* Unmapped */
list->cmd_offset += bytes_used;
if (batch->elem) {
glMultiDrawElementsIndirect(prim, INDEX_TYPE(batch->elem), (void *)offset, cmd_len, 0);