-/**************************************************************************
- *
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+/*
+ * Copyright 2003 VMware, Inc.
* All Rights Reserved.
- *
+ *
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
+ * distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
- *
+ *
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
- *
+ *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
+ */
+/**
+ * @file intel_buffer_objects.c
+ *
+ * This provides core GL buffer object functionality.
+ */
#include "main/imports.h"
#include "main/mtypes.h"
#include "main/macros.h"
#include "main/bufferobj.h"
+#include "brw_context.h"
#include "intel_blit.h"
#include "intel_buffer_objects.h"
#include "intel_batchbuffer.h"
-#include "intel_context.h"
-#include "intel_fbo.h"
-#include "intel_mipmap_tree.h"
-#include "intel_regions.h"
-#ifndef I915
-#include "brw_context.h"
-#endif
+/**
+ * Map a buffer object; issue performance warnings if mapping causes stalls.
+ *
+ * This matches the drm_intel_bo_map API, but takes an additional human-readable
+ * name for the buffer object to use in the performance debug message.
+ */
+int
+brw_bo_map(struct brw_context *brw,
+ drm_intel_bo *bo, int write_enable,
+ const char *bo_name)
+{
+ if (likely(!brw->perf_debug) || !drm_intel_bo_busy(bo))
+ return drm_intel_bo_map(bo, write_enable);
-static GLboolean
-intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj);
+ double start_time = get_time();
+
+ int ret = drm_intel_bo_map(bo, write_enable);
+
+ perf_debug("CPU mapping a busy %s BO stalled and took %.03f ms.\n",
+ bo_name, (get_time() - start_time) * 1000);
+
+ return ret;
+}
+
+int
+brw_bo_map_gtt(struct brw_context *brw, drm_intel_bo *bo, const char *bo_name)
+{
+ if (likely(!brw->perf_debug) || !drm_intel_bo_busy(bo))
+ return drm_intel_gem_bo_map_gtt(bo);
+
+ double start_time = get_time();
+
+ int ret = drm_intel_gem_bo_map_gtt(bo);
+
+ perf_debug("GTT mapping a busy %s BO stalled and took %.03f ms.\n",
+ bo_name, (get_time() - start_time) * 1000);
+
+ return ret;
+}
+
+static void
+mark_buffer_gpu_usage(struct intel_buffer_object *intel_obj,
+ uint32_t offset, uint32_t size)
+{
+ intel_obj->gpu_active_start = MIN2(intel_obj->gpu_active_start, offset);
+ intel_obj->gpu_active_end = MAX2(intel_obj->gpu_active_end, offset + size);
+}
+
+static void
+mark_buffer_inactive(struct intel_buffer_object *intel_obj)
+{
+ intel_obj->gpu_active_start = ~0;
+ intel_obj->gpu_active_end = 0;
+}
/** Allocates a new drm_intel_bo to store the data for the buffer object. */
static void
-intel_bufferobj_alloc_buffer(struct intel_context *intel,
- struct intel_buffer_object *intel_obj)
+alloc_buffer_object(struct brw_context *brw,
+ struct intel_buffer_object *intel_obj)
{
- intel_obj->buffer = drm_intel_bo_alloc(intel->bufmgr, "bufferobj",
+ intel_obj->buffer = drm_intel_bo_alloc(brw->bufmgr, "bufferobj",
intel_obj->Base.Size, 64);
-#ifndef I915
/* the buffer might be bound as a uniform buffer, need to update it
*/
- {
- struct brw_context *brw = brw_context(&intel->ctx);
- brw->state.dirty.brw |= BRW_NEW_UNIFORM_BUFFER;
- }
-#endif
+ if (intel_obj->Base.UsageHistory & USAGE_UNIFORM_BUFFER)
+ brw->ctx.NewDriverState |= BRW_NEW_UNIFORM_BUFFER;
+ if (intel_obj->Base.UsageHistory & USAGE_SHADER_STORAGE_BUFFER)
+ brw->ctx.NewDriverState |= BRW_NEW_UNIFORM_BUFFER;
+ if (intel_obj->Base.UsageHistory & USAGE_TEXTURE_BUFFER)
+ brw->ctx.NewDriverState |= BRW_NEW_TEXTURE_BUFFER;
+ if (intel_obj->Base.UsageHistory & USAGE_ATOMIC_COUNTER_BUFFER)
+ brw->ctx.NewDriverState |= BRW_NEW_ATOMIC_BUFFER;
+
+ mark_buffer_inactive(intel_obj);
}
static void
{
drm_intel_bo_unreference(intel_obj->buffer);
intel_obj->buffer = NULL;
- intel_obj->offset = 0;
- intel_obj->source = 0;
}
/**
+ * The NewBufferObject() driver hook.
+ *
+ * Allocates a new intel_buffer_object structure and initializes it.
+ *
* There is some duplication between mesa's bufferobjects and our
* bufmgr buffers. Both have an integer handle and a hashtable to
* lookup an opaque structure. It would be nice if the handles and
* internal structure where somehow shared.
*/
static struct gl_buffer_object *
-intel_bufferobj_alloc(struct gl_context * ctx, GLuint name, GLenum target)
+brw_new_buffer_object(struct gl_context * ctx, GLuint name)
{
struct intel_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object);
+ if (!obj) {
+ _mesa_error_no_memory(__func__);
+ }
- _mesa_initialize_buffer_object(ctx, &obj->Base, name, target);
+ _mesa_initialize_buffer_object(ctx, &obj->Base, name);
obj->buffer = NULL;
}
/**
- * Deallocate/free a vertex/pixel buffer object.
- * Called via glDeleteBuffersARB().
+ * The DeleteBuffer() driver hook.
+ *
+ * Deletes a single OpenGL buffer object. Used by glDeleteBuffers().
*/
static void
-intel_bufferobj_free(struct gl_context * ctx, struct gl_buffer_object *obj)
+brw_delete_buffer(struct gl_context * ctx, struct gl_buffer_object *obj)
{
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
* to the spec, but Mesa doesn't do UnmapBuffer for us at context destroy
* (though it does if you call glDeleteBuffers)
*/
- if (obj->Pointer)
- intel_bufferobj_unmap(ctx, obj);
-
- free(intel_obj->sys_buffer);
+ _mesa_buffer_unmap_all_mappings(ctx, obj);
drm_intel_bo_unreference(intel_obj->buffer);
free(intel_obj);
}
-
/**
- * Allocate space for and store data in a buffer object. Any data that was
- * previously stored in the buffer object is lost. If data is NULL,
- * memory will be allocated, but no copy will occur.
- * Called via ctx->Driver.BufferData().
+ * The BufferData() driver hook.
+ *
+ * Implements glBufferData(), which recreates a buffer object's data store
+ * and populates it with the given data, if present.
+ *
+ * Any data that was previously stored in the buffer object is lost.
+ *
* \return true for success, false if out of memory
*/
static GLboolean
-intel_bufferobj_data(struct gl_context * ctx,
- GLenum target,
- GLsizeiptrARB size,
- const GLvoid * data,
- GLenum usage, struct gl_buffer_object *obj)
+brw_buffer_data(struct gl_context *ctx,
+ GLenum target,
+ GLsizeiptrARB size,
+ const GLvoid *data,
+ GLenum usage,
+ GLbitfield storageFlags,
+ struct gl_buffer_object *obj)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
/* Part of the ABI, but this function doesn't use it.
*/
-#ifndef I915
(void) target;
-#endif
intel_obj->Base.Size = size;
intel_obj->Base.Usage = usage;
+ intel_obj->Base.StorageFlags = storageFlags;
- assert(!obj->Pointer); /* Mesa should have unmapped it */
+ assert(!obj->Mappings[MAP_USER].Pointer); /* Mesa should have unmapped it */
+ assert(!obj->Mappings[MAP_INTERNAL].Pointer);
if (intel_obj->buffer != NULL)
release_buffer(intel_obj);
- free(intel_obj->sys_buffer);
- intel_obj->sys_buffer = NULL;
-
if (size != 0) {
-#ifdef I915
- /* On pre-965, stick VBOs in system memory, as we're always doing
- * swtnl with their contents anyway.
- */
- if (target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER) {
- intel_obj->sys_buffer = malloc(size);
- if (intel_obj->sys_buffer != NULL) {
- if (data != NULL)
- memcpy(intel_obj->sys_buffer, data, size);
- return true;
- }
- }
-#endif
- intel_bufferobj_alloc_buffer(intel, intel_obj);
+ alloc_buffer_object(brw, intel_obj);
if (!intel_obj->buffer)
return false;
/**
- * Replace data in a subrange of buffer object. If the data range
- * specified by size + offset extends beyond the end of the buffer or
- * if data is NULL, no copy is performed.
- * Called via glBufferSubDataARB().
+ * The BufferSubData() driver hook.
+ *
+ * Implements glBufferSubData(), which replaces a portion of the data in a
+ * buffer object.
+ *
+ * If the data range specified by (size + offset) extends beyond the end of
+ * the buffer or if data is NULL, no copy is performed.
*/
static void
-intel_bufferobj_subdata(struct gl_context * ctx,
- GLintptrARB offset,
- GLsizeiptrARB size,
- const GLvoid * data, struct gl_buffer_object *obj)
+brw_buffer_subdata(struct gl_context *ctx,
+ GLintptrARB offset,
+ GLsizeiptrARB size,
+ const GLvoid *data,
+ struct gl_buffer_object *obj)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
bool busy;
assert(intel_obj);
- /* If we have a single copy in system memory, update that */
- if (intel_obj->sys_buffer) {
- if (intel_obj->source)
- release_buffer(intel_obj);
-
- if (intel_obj->buffer == NULL) {
- memcpy((char *)intel_obj->sys_buffer + offset, data, size);
- return;
+ /* See if we can unsynchronized write the data into the user's BO. This
+ * avoids GPU stalls in unfortunately common user patterns (uploading
+ * sequentially into a BO, with draw calls in between each upload).
+ *
+ * Once we've hit this path, we mark this GL BO as preferring stalling to
+ * blits, so that we can hopefully hit this path again in the future
+ * (otherwise, an app that might occasionally stall but mostly not will end
+ * up with blitting all the time, at the cost of bandwidth)
+ */
+ if (offset + size <= intel_obj->gpu_active_start ||
+ intel_obj->gpu_active_end <= offset) {
+ if (brw->has_llc) {
+ drm_intel_gem_bo_map_unsynchronized(intel_obj->buffer);
+ memcpy(intel_obj->buffer->virtual + offset, data, size);
+ drm_intel_bo_unmap(intel_obj->buffer);
+
+ if (intel_obj->gpu_active_end > intel_obj->gpu_active_start)
+ intel_obj->prefer_stall_to_blit = true;
+ return;
+ } else {
+ perf_debug("BufferSubData could be unsynchronized, but !LLC doesn't support it yet\n");
}
-
- free(intel_obj->sys_buffer);
- intel_obj->sys_buffer = NULL;
}
- /* Otherwise we need to update the copy in video memory. */
busy =
drm_intel_bo_busy(intel_obj->buffer) ||
- drm_intel_bo_references(intel->batch.bo, intel_obj->buffer);
+ drm_intel_bo_references(brw->batch.bo, intel_obj->buffer);
if (busy) {
if (size == intel_obj->Base.Size) {
- /* Replace the current busy bo with fresh data. */
+ /* Replace the current busy bo so the subdata doesn't stall. */
drm_intel_bo_unreference(intel_obj->buffer);
- intel_bufferobj_alloc_buffer(intel, intel_obj);
- drm_intel_bo_subdata(intel_obj->buffer, 0, size, data);
- } else {
- perf_debug("Using a blit copy to avoid stalling on %ldb "
- "glBufferSubData() to a busy buffer object.\n",
- (long)size);
+ alloc_buffer_object(brw, intel_obj);
+ } else if (!intel_obj->prefer_stall_to_blit) {
+ perf_debug("Using a blit copy to avoid stalling on "
+ "glBufferSubData(%ld, %ld) (%ldkb) to a busy "
+ "(%d-%d) buffer object.\n",
+ (long)offset, (long)offset + size, (long)(size/1024),
+ intel_obj->gpu_active_start,
+ intel_obj->gpu_active_end);
drm_intel_bo *temp_bo =
- drm_intel_bo_alloc(intel->bufmgr, "subdata temp", size, 64);
+ drm_intel_bo_alloc(brw->bufmgr, "subdata temp", size, 64);
drm_intel_bo_subdata(temp_bo, 0, size, data);
- intel_emit_linear_blit(intel,
+ intel_emit_linear_blit(brw,
intel_obj->buffer, offset,
temp_bo, 0,
size);
drm_intel_bo_unreference(temp_bo);
+ return;
+ } else {
+ perf_debug("Stalling on glBufferSubData(%ld, %ld) (%ldkb) to a busy "
+ "(%d-%d) buffer object. Use glMapBufferRange() to "
+ "avoid this.\n",
+ (long)offset, (long)offset + size, (long)(size/1024),
+ intel_obj->gpu_active_start,
+ intel_obj->gpu_active_end);
+ intel_batchbuffer_flush(brw);
}
- } else {
- drm_intel_bo_subdata(intel_obj->buffer, offset, size, data);
}
+
+ drm_intel_bo_subdata(intel_obj->buffer, offset, size, data);
+ mark_buffer_inactive(intel_obj);
}
/**
- * Called via glGetBufferSubDataARB().
+ * The GetBufferSubData() driver hook.
+ *
+ * Implements glGetBufferSubData(), which copies a subrange of a buffer
+ * object into user memory.
*/
static void
-intel_bufferobj_get_subdata(struct gl_context * ctx,
- GLintptrARB offset,
- GLsizeiptrARB size,
- GLvoid * data, struct gl_buffer_object *obj)
+brw_get_buffer_subdata(struct gl_context *ctx,
+ GLintptrARB offset,
+ GLsizeiptrARB size,
+ GLvoid *data,
+ struct gl_buffer_object *obj)
{
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
assert(intel_obj);
- if (intel_obj->sys_buffer)
- memcpy(data, (char *)intel_obj->sys_buffer + offset, size);
- else {
- if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) {
- intel_batchbuffer_flush(intel);
- }
- drm_intel_bo_get_subdata(intel_obj->buffer, offset, size, data);
+ if (drm_intel_bo_references(brw->batch.bo, intel_obj->buffer)) {
+ intel_batchbuffer_flush(brw);
}
-}
+ drm_intel_bo_get_subdata(intel_obj->buffer, offset, size, data);
+ mark_buffer_inactive(intel_obj);
+}
/**
- * Called via glMapBufferRange and glMapBuffer
+ * The MapBufferRange() driver hook.
+ *
+ * This implements both glMapBufferRange() and glMapBuffer().
*
* The goal of this extension is to allow apps to accumulate their rendering
* at the same time as they accumulate their buffer object. Without it,
* and blit it into the real BO at unmap time.
*/
static void *
-intel_bufferobj_map_range(struct gl_context * ctx,
- GLintptr offset, GLsizeiptr length,
- GLbitfield access, struct gl_buffer_object *obj)
+brw_map_buffer_range(struct gl_context *ctx,
+ GLintptr offset, GLsizeiptr length,
+ GLbitfield access, struct gl_buffer_object *obj,
+ gl_map_buffer_index index)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
/* _mesa_MapBufferRange (GL entrypoint) sets these, but the vbo module also
* internally uses our functions directly.
*/
- obj->Offset = offset;
- obj->Length = length;
- obj->AccessFlags = access;
-
- if (intel_obj->sys_buffer) {
- const bool read_only =
- (access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == GL_MAP_READ_BIT;
-
- if (!read_only && intel_obj->source)
- release_buffer(intel_obj);
-
- if (!intel_obj->buffer || intel_obj->source) {
- obj->Pointer = intel_obj->sys_buffer + offset;
- return obj->Pointer;
- }
-
- free(intel_obj->sys_buffer);
- intel_obj->sys_buffer = NULL;
- }
+ obj->Mappings[index].Offset = offset;
+ obj->Mappings[index].Length = length;
+ obj->Mappings[index].AccessFlags = access;
if (intel_obj->buffer == NULL) {
- obj->Pointer = NULL;
+ obj->Mappings[index].Pointer = NULL;
return NULL;
}
* achieve the required synchronization.
*/
if (!(access & GL_MAP_UNSYNCHRONIZED_BIT)) {
- if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) {
+ if (drm_intel_bo_references(brw->batch.bo, intel_obj->buffer)) {
if (access & GL_MAP_INVALIDATE_BUFFER_BIT) {
drm_intel_bo_unreference(intel_obj->buffer);
- intel_bufferobj_alloc_buffer(intel, intel_obj);
+ alloc_buffer_object(brw, intel_obj);
} else {
perf_debug("Stalling on the GPU for mapping a busy buffer "
"object\n");
- intel_flush(ctx);
+ intel_batchbuffer_flush(brw);
}
} else if (drm_intel_bo_busy(intel_obj->buffer) &&
(access & GL_MAP_INVALIDATE_BUFFER_BIT)) {
drm_intel_bo_unreference(intel_obj->buffer);
- intel_bufferobj_alloc_buffer(intel, intel_obj);
+ alloc_buffer_object(brw, intel_obj);
}
}
* doesn't require the current contents of that range, make a new
* BO, and we'll copy what they put in there out at unmap or
* FlushRange time.
+ *
+ * That is, unless they're looking for a persistent mapping -- we would
+ * need to do blits in the MemoryBarrier call, and it's easier to just do a
+ * GPU stall and do a mapping.
*/
- if ((access & GL_MAP_INVALIDATE_RANGE_BIT) &&
+ if (!(access & (GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_PERSISTENT_BIT)) &&
+ (access & GL_MAP_INVALIDATE_RANGE_BIT) &&
drm_intel_bo_busy(intel_obj->buffer)) {
- if (access & GL_MAP_FLUSH_EXPLICIT_BIT) {
- intel_obj->range_map_buffer = malloc(length);
- obj->Pointer = intel_obj->range_map_buffer;
+ /* Ensure that the base alignment of the allocation meets the alignment
+ * guarantees the driver has advertised to the application.
+ */
+ const unsigned alignment = ctx->Const.MinMapBufferAlignment;
+
+ intel_obj->map_extra[index] = (uintptr_t) offset % alignment;
+ intel_obj->range_map_bo[index] = drm_intel_bo_alloc(brw->bufmgr,
+ "BO blit temp",
+ length +
+ intel_obj->map_extra[index],
+ alignment);
+ if (brw->has_llc) {
+ brw_bo_map(brw, intel_obj->range_map_bo[index],
+ (access & GL_MAP_WRITE_BIT) != 0, "range-map");
} else {
- intel_obj->range_map_bo = drm_intel_bo_alloc(intel->bufmgr,
- "range map",
- length, 64);
- if (!(access & GL_MAP_READ_BIT)) {
- drm_intel_gem_bo_map_gtt(intel_obj->range_map_bo);
- } else {
- drm_intel_bo_map(intel_obj->range_map_bo,
- (access & GL_MAP_WRITE_BIT) != 0);
- }
- obj->Pointer = intel_obj->range_map_bo->virtual;
+ drm_intel_gem_bo_map_gtt(intel_obj->range_map_bo[index]);
}
- return obj->Pointer;
+ obj->Mappings[index].Pointer =
+ intel_obj->range_map_bo[index]->virtual + intel_obj->map_extra[index];
+ return obj->Mappings[index].Pointer;
}
- if (access & GL_MAP_UNSYNCHRONIZED_BIT)
+ if (access & GL_MAP_UNSYNCHRONIZED_BIT) {
+ if (!brw->has_llc && brw->perf_debug &&
+ drm_intel_bo_busy(intel_obj->buffer)) {
+ perf_debug("MapBufferRange with GL_MAP_UNSYNCHRONIZED_BIT stalling (it's actually synchronized on non-LLC platforms)\n");
+ }
drm_intel_gem_bo_map_unsynchronized(intel_obj->buffer);
- else if (!(access & GL_MAP_READ_BIT)) {
+ } else if (!brw->has_llc && (!(access & GL_MAP_READ_BIT) ||
+ (access & GL_MAP_PERSISTENT_BIT))) {
drm_intel_gem_bo_map_gtt(intel_obj->buffer);
+ mark_buffer_inactive(intel_obj);
} else {
- drm_intel_bo_map(intel_obj->buffer, (access & GL_MAP_WRITE_BIT) != 0);
+ brw_bo_map(brw, intel_obj->buffer, (access & GL_MAP_WRITE_BIT) != 0,
+ "MapBufferRange");
+ mark_buffer_inactive(intel_obj);
}
- obj->Pointer = intel_obj->buffer->virtual + offset;
- return obj->Pointer;
+ obj->Mappings[index].Pointer = intel_obj->buffer->virtual + offset;
+ return obj->Mappings[index].Pointer;
}
-/* Ideally we'd use a BO to avoid taking up cache space for the temporary
+/**
+ * The FlushMappedBufferRange() driver hook.
+ *
+ * Implements glFlushMappedBufferRange(), which signifies that modifications
+ * have been made to a range of a mapped buffer, and it should be flushed.
+ *
+ * This is only used for buffers mapped with GL_MAP_FLUSH_EXPLICIT_BIT.
+ *
+ * Ideally we'd use a BO to avoid taking up cache space for the temporary
* data, but FlushMappedBufferRange may be followed by further writes to
* the pointer, so we would have to re-map after emitting our blit, which
* would defeat the point.
*/
static void
-intel_bufferobj_flush_mapped_range(struct gl_context *ctx,
- GLintptr offset, GLsizeiptr length,
- struct gl_buffer_object *obj)
+brw_flush_mapped_buffer_range(struct gl_context *ctx,
+ GLintptr offset, GLsizeiptr length,
+ struct gl_buffer_object *obj,
+ gl_map_buffer_index index)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
- drm_intel_bo *temp_bo;
- /* Unless we're in the range map using a temporary system buffer,
- * there's no work to do.
+ assert(obj->Mappings[index].AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT);
+
+ /* If we gave a direct mapping of the buffer instead of using a temporary,
+ * then there's nothing to do.
*/
- if (intel_obj->range_map_buffer == NULL)
+ if (intel_obj->range_map_bo[index] == NULL)
return;
if (length == 0)
return;
- temp_bo = drm_intel_bo_alloc(intel->bufmgr, "range map flush", length, 64);
-
- drm_intel_bo_subdata(temp_bo, 0, length, intel_obj->range_map_buffer);
-
- intel_emit_linear_blit(intel,
- intel_obj->buffer, obj->Offset + offset,
- temp_bo, 0,
+ /* Note that we're not unmapping our buffer while executing the blit. We
+ * need to have a mapping still at the end of this call, since the user
+ * gets to make further modifications and glFlushMappedBufferRange() calls.
+ * This is safe, because:
+ *
+ * - On LLC platforms, we're using a CPU mapping that's coherent with the
+ * GPU (except for the render caches), so the kernel doesn't need to do
+ * any flushing work for us except for what happens at batch exec time
+ * anyway.
+ *
+ * - On non-LLC platforms, we're using a GTT mapping that writes directly
+ * to system memory (except for the chipset cache that gets flushed at
+ * batch exec time).
+ *
+ * In both cases we don't need to stall for the previous blit to complete
+ * so we can re-map (and we definitely don't want to, since that would be
+ * slow): If the user edits a part of their buffer that's previously been
+ * blitted, then our lack of synchoronization is fine, because either
+ * they'll get some too-new data in the first blit and not do another blit
+ * of that area (but in that case the results are undefined), or they'll do
+ * another blit of that area and the complete newer data will land the
+ * second time.
+ */
+ intel_emit_linear_blit(brw,
+ intel_obj->buffer,
+ obj->Mappings[index].Offset + offset,
+ intel_obj->range_map_bo[index],
+ intel_obj->map_extra[index] + offset,
length);
-
- drm_intel_bo_unreference(temp_bo);
+ mark_buffer_gpu_usage(intel_obj,
+ obj->Mappings[index].Offset + offset,
+ length);
}
/**
- * Called via glUnmapBuffer().
+ * The UnmapBuffer() driver hook.
+ *
+ * Implements glUnmapBuffer().
*/
static GLboolean
-intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj)
+brw_unmap_buffer(struct gl_context *ctx,
+ struct gl_buffer_object *obj,
+ gl_map_buffer_index index)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
assert(intel_obj);
- assert(obj->Pointer);
- if (intel_obj->sys_buffer != NULL) {
- /* always keep the mapping around. */
- } else if (intel_obj->range_map_buffer != NULL) {
- /* Since we've emitted some blits to buffers that will (likely) be used
- * in rendering operations in other cache domains in this batch, emit a
- * flush. Once again, we wish for a domain tracker in libdrm to cover
- * usage inside of a batchbuffer.
- */
- intel_batchbuffer_emit_mi_flush(intel);
- free(intel_obj->range_map_buffer);
- intel_obj->range_map_buffer = NULL;
- } else if (intel_obj->range_map_bo != NULL) {
- drm_intel_bo_unmap(intel_obj->range_map_bo);
-
- intel_emit_linear_blit(intel,
- intel_obj->buffer, obj->Offset,
- intel_obj->range_map_bo, 0,
- obj->Length);
+ assert(obj->Mappings[index].Pointer);
+ if (intel_obj->range_map_bo[index] != NULL) {
+ drm_intel_bo_unmap(intel_obj->range_map_bo[index]);
+
+ if (!(obj->Mappings[index].AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT)) {
+ intel_emit_linear_blit(brw,
+ intel_obj->buffer, obj->Mappings[index].Offset,
+ intel_obj->range_map_bo[index],
+ intel_obj->map_extra[index],
+ obj->Mappings[index].Length);
+ mark_buffer_gpu_usage(intel_obj, obj->Mappings[index].Offset,
+ obj->Mappings[index].Length);
+ }
/* Since we've emitted some blits to buffers that will (likely) be used
* in rendering operations in other cache domains in this batch, emit a
* flush. Once again, we wish for a domain tracker in libdrm to cover
* usage inside of a batchbuffer.
*/
- intel_batchbuffer_emit_mi_flush(intel);
+ brw_emit_mi_flush(brw);
- drm_intel_bo_unreference(intel_obj->range_map_bo);
- intel_obj->range_map_bo = NULL;
+ drm_intel_bo_unreference(intel_obj->range_map_bo[index]);
+ intel_obj->range_map_bo[index] = NULL;
} else if (intel_obj->buffer != NULL) {
drm_intel_bo_unmap(intel_obj->buffer);
}
- obj->Pointer = NULL;
- obj->Offset = 0;
- obj->Length = 0;
+ obj->Mappings[index].Pointer = NULL;
+ obj->Mappings[index].Offset = 0;
+ obj->Mappings[index].Length = 0;
return true;
}
+/**
+ * Gets a pointer to the object's BO, and marks the given range as being used
+ * on the GPU.
+ *
+ * Anywhere that uses buffer objects in the pipeline should be using this to
+ * mark the range of the buffer that is being accessed by the pipeline.
+ */
drm_intel_bo *
-intel_bufferobj_buffer(struct intel_context *intel,
+intel_bufferobj_buffer(struct brw_context *brw,
struct intel_buffer_object *intel_obj,
- GLuint flag)
+ uint32_t offset, uint32_t size)
{
- if (intel_obj->source)
- release_buffer(intel_obj);
-
- if (intel_obj->buffer == NULL) {
- intel_bufferobj_alloc_buffer(intel, intel_obj);
- drm_intel_bo_subdata(intel_obj->buffer,
- 0, intel_obj->Base.Size,
- intel_obj->sys_buffer);
-
- free(intel_obj->sys_buffer);
- intel_obj->sys_buffer = NULL;
- intel_obj->offset = 0;
- }
-
- return intel_obj->buffer;
-}
-
-#define INTEL_UPLOAD_SIZE (64*1024)
-
-void
-intel_upload_finish(struct intel_context *intel)
-{
- if (!intel->upload.bo)
- return;
-
- if (intel->upload.buffer_len) {
- drm_intel_bo_subdata(intel->upload.bo,
- intel->upload.buffer_offset,
- intel->upload.buffer_len,
- intel->upload.buffer);
- intel->upload.buffer_len = 0;
- }
-
- drm_intel_bo_unreference(intel->upload.bo);
- intel->upload.bo = NULL;
-}
-
-static void wrap_buffers(struct intel_context *intel, GLuint size)
-{
- intel_upload_finish(intel);
-
- if (size < INTEL_UPLOAD_SIZE)
- size = INTEL_UPLOAD_SIZE;
-
- intel->upload.bo = drm_intel_bo_alloc(intel->bufmgr, "upload", size, 0);
- intel->upload.offset = 0;
-}
-
-void intel_upload_data(struct intel_context *intel,
- const void *ptr, GLuint size, GLuint align,
- drm_intel_bo **return_bo,
- GLuint *return_offset)
-{
- GLuint base, delta;
-
- base = (intel->upload.offset + align - 1) / align * align;
- if (intel->upload.bo == NULL || base + size > intel->upload.bo->size) {
- wrap_buffers(intel, size);
- base = 0;
- }
-
- drm_intel_bo_reference(intel->upload.bo);
- *return_bo = intel->upload.bo;
- *return_offset = base;
-
- delta = base - intel->upload.offset;
- if (intel->upload.buffer_len &&
- intel->upload.buffer_len + delta + size > sizeof(intel->upload.buffer))
- {
- drm_intel_bo_subdata(intel->upload.bo,
- intel->upload.buffer_offset,
- intel->upload.buffer_len,
- intel->upload.buffer);
- intel->upload.buffer_len = 0;
- }
-
- if (size < sizeof(intel->upload.buffer))
- {
- if (intel->upload.buffer_len == 0)
- intel->upload.buffer_offset = base;
- else
- intel->upload.buffer_len += delta;
-
- memcpy(intel->upload.buffer + intel->upload.buffer_len, ptr, size);
- intel->upload.buffer_len += size;
- }
- else
- {
- drm_intel_bo_subdata(intel->upload.bo, base, size, ptr);
- }
-
- intel->upload.offset = base + size;
-}
-
-void *intel_upload_map(struct intel_context *intel, GLuint size, GLuint align)
-{
- GLuint base, delta;
- char *ptr;
-
- base = (intel->upload.offset + align - 1) / align * align;
- if (intel->upload.bo == NULL || base + size > intel->upload.bo->size) {
- wrap_buffers(intel, size);
- base = 0;
- }
-
- delta = base - intel->upload.offset;
- if (intel->upload.buffer_len &&
- intel->upload.buffer_len + delta + size > sizeof(intel->upload.buffer))
- {
- drm_intel_bo_subdata(intel->upload.bo,
- intel->upload.buffer_offset,
- intel->upload.buffer_len,
- intel->upload.buffer);
- intel->upload.buffer_len = 0;
- }
-
- if (size <= sizeof(intel->upload.buffer)) {
- if (intel->upload.buffer_len == 0)
- intel->upload.buffer_offset = base;
- else
- intel->upload.buffer_len += delta;
-
- ptr = intel->upload.buffer + intel->upload.buffer_len;
- intel->upload.buffer_len += size;
- } else
- ptr = malloc(size);
-
- return ptr;
-}
-
-void intel_upload_unmap(struct intel_context *intel,
- const void *ptr, GLuint size, GLuint align,
- drm_intel_bo **return_bo,
- GLuint *return_offset)
-{
- GLuint base;
-
- base = (intel->upload.offset + align - 1) / align * align;
- if (size > sizeof(intel->upload.buffer)) {
- drm_intel_bo_subdata(intel->upload.bo, base, size, ptr);
- free((void*)ptr);
- }
+ /* This is needed so that things like transform feedback and texture buffer
+ * objects that need a BO but don't want to check that they exist for
+ * draw-time validation can just always get a BO from a GL buffer object.
+ */
+ if (intel_obj->buffer == NULL)
+ alloc_buffer_object(brw, intel_obj);
- drm_intel_bo_reference(intel->upload.bo);
- *return_bo = intel->upload.bo;
- *return_offset = base;
+ mark_buffer_gpu_usage(intel_obj, offset, size);
- intel->upload.offset = base + size;
-}
-
-drm_intel_bo *
-intel_bufferobj_source(struct intel_context *intel,
- struct intel_buffer_object *intel_obj,
- GLuint align, GLuint *offset)
-{
- if (intel_obj->buffer == NULL) {
- intel_upload_data(intel,
- intel_obj->sys_buffer, intel_obj->Base.Size, align,
- &intel_obj->buffer, &intel_obj->offset);
- intel_obj->source = 1;
- }
-
- *offset = intel_obj->offset;
return intel_obj->buffer;
}
+/**
+ * The CopyBufferSubData() driver hook.
+ *
+ * Implements glCopyBufferSubData(), which copies a portion of one buffer
+ * object's data to another. Independent source and destination offsets
+ * are allowed.
+ */
static void
-intel_bufferobj_copy_subdata(struct gl_context *ctx,
- struct gl_buffer_object *src,
- struct gl_buffer_object *dst,
- GLintptr read_offset, GLintptr write_offset,
- GLsizeiptr size)
+brw_copy_buffer_subdata(struct gl_context *ctx,
+ struct gl_buffer_object *src,
+ struct gl_buffer_object *dst,
+ GLintptr read_offset, GLintptr write_offset,
+ GLsizeiptr size)
{
- struct intel_context *intel = intel_context(ctx);
+ struct brw_context *brw = brw_context(ctx);
struct intel_buffer_object *intel_src = intel_buffer_object(src);
struct intel_buffer_object *intel_dst = intel_buffer_object(dst);
drm_intel_bo *src_bo, *dst_bo;
- GLuint src_offset;
if (size == 0)
return;
- /* If we're in system memory, just map and memcpy. */
- if (intel_src->sys_buffer || intel_dst->sys_buffer) {
- /* The same buffer may be used, but note that regions copied may
- * not overlap.
- */
- if (src == dst) {
- char *ptr = intel_bufferobj_map_range(ctx, 0, dst->Size,
- GL_MAP_READ_BIT |
- GL_MAP_WRITE_BIT,
- dst);
- memmove(ptr + write_offset, ptr + read_offset, size);
- intel_bufferobj_unmap(ctx, dst);
- } else {
- const char *src_ptr;
- char *dst_ptr;
-
- src_ptr = intel_bufferobj_map_range(ctx, 0, src->Size,
- GL_MAP_READ_BIT, src);
- dst_ptr = intel_bufferobj_map_range(ctx, 0, dst->Size,
- GL_MAP_WRITE_BIT, dst);
+ dst_bo = intel_bufferobj_buffer(brw, intel_dst, write_offset, size);
+ src_bo = intel_bufferobj_buffer(brw, intel_src, read_offset, size);
- memcpy(dst_ptr + write_offset, src_ptr + read_offset, size);
-
- intel_bufferobj_unmap(ctx, src);
- intel_bufferobj_unmap(ctx, dst);
- }
- return;
- }
-
- /* Otherwise, we have real BOs, so blit them. */
-
- dst_bo = intel_bufferobj_buffer(intel, intel_dst, INTEL_WRITE_PART);
- src_bo = intel_bufferobj_source(intel, intel_src, 64, &src_offset);
-
- intel_emit_linear_blit(intel,
+ intel_emit_linear_blit(brw,
dst_bo, write_offset,
- src_bo, read_offset + src_offset, size);
+ src_bo, read_offset, size);
/* Since we've emitted some blits to buffers that will (likely) be used
* in rendering operations in other cache domains in this batch, emit a
* flush. Once again, we wish for a domain tracker in libdrm to cover
* usage inside of a batchbuffer.
*/
- intel_batchbuffer_emit_mi_flush(intel);
-}
-
-static GLenum
-intel_buffer_purgeable(drm_intel_bo *buffer)
-{
- int retained = 0;
-
- if (buffer != NULL)
- retained = drm_intel_bo_madvise (buffer, I915_MADV_DONTNEED);
-
- return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_purgeable(struct gl_context * ctx,
- struct gl_buffer_object *obj,
- GLenum option)
-{
- struct intel_buffer_object *intel_obj = intel_buffer_object (obj);
-
- if (intel_obj->buffer != NULL)
- return intel_buffer_purgeable(intel_obj->buffer);
-
- if (option == GL_RELEASED_APPLE) {
- free(intel_obj->sys_buffer);
- intel_obj->sys_buffer = NULL;
-
- return GL_RELEASED_APPLE;
- } else {
- /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
- struct intel_context *intel = intel_context(ctx);
- drm_intel_bo *bo = intel_bufferobj_buffer(intel, intel_obj, INTEL_READ);
-
- return intel_buffer_purgeable(bo);
- }
-}
-
-static GLenum
-intel_texture_object_purgeable(struct gl_context * ctx,
- struct gl_texture_object *obj,
- GLenum option)
-{
- struct intel_texture_object *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_texture_object(obj);
- if (intel->mt == NULL || intel->mt->region == NULL)
- return GL_RELEASED_APPLE;
-
- return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_purgeable(struct gl_context * ctx,
- struct gl_renderbuffer *obj,
- GLenum option)
-{
- struct intel_renderbuffer *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_renderbuffer(obj);
- if (intel->mt == NULL)
- return GL_RELEASED_APPLE;
-
- return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_buffer_unpurgeable(drm_intel_bo *buffer)
-{
- int retained;
-
- retained = 0;
- if (buffer != NULL)
- retained = drm_intel_bo_madvise (buffer, I915_MADV_WILLNEED);
-
- return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_unpurgeable(struct gl_context * ctx,
- struct gl_buffer_object *obj,
- GLenum option)
-{
- (void) ctx;
- (void) option;
-
- return intel_buffer_unpurgeable(intel_buffer_object (obj)->buffer);
-}
-
-static GLenum
-intel_texture_object_unpurgeable(struct gl_context * ctx,
- struct gl_texture_object *obj,
- GLenum option)
-{
- struct intel_texture_object *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_texture_object(obj);
- if (intel->mt == NULL || intel->mt->region == NULL)
- return GL_UNDEFINED_APPLE;
-
- return intel_buffer_unpurgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_unpurgeable(struct gl_context * ctx,
- struct gl_renderbuffer *obj,
- GLenum option)
-{
- struct intel_renderbuffer *intel;
-
- (void) ctx;
- (void) option;
-
- intel = intel_renderbuffer(obj);
- if (intel->mt == NULL)
- return GL_UNDEFINED_APPLE;
-
- return intel_buffer_unpurgeable(intel->mt->region->bo);
+ brw_emit_mi_flush(brw);
}
void
intelInitBufferObjectFuncs(struct dd_function_table *functions)
{
- functions->NewBufferObject = intel_bufferobj_alloc;
- functions->DeleteBuffer = intel_bufferobj_free;
- functions->BufferData = intel_bufferobj_data;
- functions->BufferSubData = intel_bufferobj_subdata;
- functions->GetBufferSubData = intel_bufferobj_get_subdata;
- functions->MapBufferRange = intel_bufferobj_map_range;
- functions->FlushMappedBufferRange = intel_bufferobj_flush_mapped_range;
- functions->UnmapBuffer = intel_bufferobj_unmap;
- functions->CopyBufferSubData = intel_bufferobj_copy_subdata;
-
- functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
- functions->TextureObjectPurgeable = intel_texture_object_purgeable;
- functions->RenderObjectPurgeable = intel_render_object_purgeable;
-
- functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
- functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
- functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
+ functions->NewBufferObject = brw_new_buffer_object;
+ functions->DeleteBuffer = brw_delete_buffer;
+ functions->BufferData = brw_buffer_data;
+ functions->BufferSubData = brw_buffer_subdata;
+ functions->GetBufferSubData = brw_get_buffer_subdata;
+ functions->MapBufferRange = brw_map_buffer_range;
+ functions->FlushMappedBufferRange = brw_flush_mapped_buffer_range;
+ functions->UnmapBuffer = brw_unmap_buffer;
+ functions->CopyBufferSubData = brw_copy_buffer_subdata;
}
projects / mesa.git / blobdiff