--- /dev/null
+/*
+ * Copyright © 2008 Intel Corporation
+ *
+ * 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, 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Eric Anholt <eric@anholt.net>
+ *
+ */
+
+/** @file support for ARB_query_object
+ *
+ * ARB_query_object is implemented by using the PIPE_CONTROL command to stall
+ * execution on the completion of previous depth tests, and write the
+ * current PS_DEPTH_COUNT to a buffer object.
+ *
+ * We use before and after counts when drawing during a query so that
+ * we don't pick up other clients' query data in ours. To reduce overhead,
+ * a single BO is used to record the query data for all active queries at
+ * once. This also gives us a simple bound on how much batchbuffer space is
+ * required for handling queries, so that we can be sure that we won't
+ * have to emit a batchbuffer without getting the ending PS_DEPTH_COUNT.
+ */
+#include "main/simple_list.h"
+#include "main/imports.h"
+
+#include "brw_context.h"
+#include "intel_batchbuffer.h"
+#include "intel_reg.h"
+
+/** Waits on the query object's BO and totals the results for this query */
+static void
+brw_queryobj_get_results(struct brw_query_object *query)
+{
+ int i;
+ uint64_t *results;
+
+ if (query->bo == NULL)
+ return;
+
+ /* Map and count the pixels from the current query BO */
+ dri_bo_map(query->bo, GL_FALSE);
+ results = query->bo->virtual;
+ for (i = query->first_index; i <= query->last_index; i++) {
+ query->Base.Result += results[i * 2 + 1] - results[i * 2];
+ }
+ dri_bo_unmap(query->bo);
+
+ dri_bo_unreference(query->bo);
+ query->bo = NULL;
+}
+
+static struct gl_query_object *
+brw_new_query_object(GLcontext *ctx, GLuint id)
+{
+ struct brw_query_object *query;
+
+ query = _mesa_calloc(sizeof(struct brw_query_object));
+
+ query->Base.Id = id;
+ query->Base.Result = 0;
+ query->Base.Active = GL_FALSE;
+ query->Base.Ready = GL_TRUE;
+
+ return &query->Base;
+}
+
+static void
+brw_delete_query(GLcontext *ctx, struct gl_query_object *q)
+{
+ struct brw_query_object *query = (struct brw_query_object *)q;
+
+ dri_bo_unreference(query->bo);
+ _mesa_free(query);
+}
+
+static void
+brw_begin_query(GLcontext *ctx, struct gl_query_object *q)
+{
+ struct brw_context *brw = brw_context(ctx);
+ struct intel_context *intel = intel_context(ctx);
+ struct brw_query_object *query = (struct brw_query_object *)q;
+
+ /* Reset our driver's tracking of query state. */
+ dri_bo_unreference(query->bo);
+ query->bo = NULL;
+ query->first_index = -1;
+ query->last_index = -1;
+
+ insert_at_head(&brw->query.active_head, query);
+ intel->stats_wm++;
+}
+
+/**
+ * Begin the ARB_occlusion_query query on a query object.
+ */
+static void
+brw_end_query(GLcontext *ctx, struct gl_query_object *q)
+{
+ struct brw_context *brw = brw_context(ctx);
+ struct intel_context *intel = intel_context(ctx);
+ struct brw_query_object *query = (struct brw_query_object *)q;
+
+ /* Flush the batchbuffer in case it has writes to our query BO.
+ * Have later queries write to a new query BO so that further rendering
+ * doesn't delay the collection of our results.
+ */
+ if (query->bo) {
+ brw_emit_query_end(brw);
+ intel_batchbuffer_flush(intel->batch);
+
+ dri_bo_unreference(brw->query.bo);
+ brw->query.bo = NULL;
+ }
+
+ remove_from_list(query);
+
+ intel->stats_wm--;
+}
+
+static void brw_wait_query(GLcontext *ctx, struct gl_query_object *q)
+{
+ struct brw_query_object *query = (struct brw_query_object *)q;
+
+ brw_queryobj_get_results(query);
+ query->Base.Ready = GL_TRUE;
+}
+
+static void brw_check_query(GLcontext *ctx, struct gl_query_object *q)
+{
+ /* XXX: Need to expose dri_bo_is_idle from bufmgr. */
+#if 0
+ struct brw_query_object *query = (struct brw_query_object *)q;
+
+ if (dri_bo_is_idle(query->bo)) {
+ brw_queryobj_get_results(query);
+ query->Base.Ready = GL_TRUE;
+ }
+#else
+ brw_wait_query(ctx, q);
+#endif
+}
+
+/** Called to set up the query BO and account for its aperture space */
+void
+brw_prepare_query_begin(struct brw_context *brw)
+{
+ struct intel_context *intel = &brw->intel;
+ dri_bo *aper_array[] = {
+ intel->batch->buf,
+ brw->query.bo,
+ };
+
+ /* Skip if we're not doing any queries. */
+ if (is_empty_list(&brw->query.active_head))
+ return;
+
+ /* Get a new query BO if we're going to need it. */
+ if (brw->query.bo == NULL ||
+ brw->query.index * 2 + 1 >= 4096 / sizeof(uint64_t)) {
+ dri_bo_unreference(brw->query.bo);
+ brw->query.bo = NULL;
+
+ brw->query.bo = dri_bo_alloc(intel->bufmgr, "query", 4096, 1);
+ brw->query.index = 0;
+ }
+
+ if (dri_bufmgr_check_aperture_space(aper_array, ARRAY_SIZE(aper_array)))
+ intel_batchbuffer_flush(intel->batch);
+}
+
+/** Called just before primitive drawing to get a beginning PS_DEPTH_COUNT. */
+void
+brw_emit_query_begin(struct brw_context *brw)
+{
+ struct intel_context *intel = &brw->intel;
+ struct brw_query_object *query;
+
+ /* Skip if we're not doing any queries, or we've emitted the start. */
+ if (brw->query.active || is_empty_list(&brw->query.active_head))
+ return;
+
+ BEGIN_BATCH(4, IGNORE_CLIPRECTS);
+ OUT_BATCH(_3DSTATE_PIPE_CONTROL |
+ PIPE_CONTROL_DEPTH_STALL |
+ PIPE_CONTROL_WRITE_DEPTH_COUNT);
+ /* This object could be mapped cacheable, but we don't have an exposed
+ * mechanism to support that. Since it's going uncached, tell GEM that
+ * we're writing to it. The usual clflush should be all that's required
+ * to pick up the results.
+ */
+ OUT_RELOC(brw->query.bo,
+ I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
+ PIPE_CONTROL_GLOBAL_GTT_WRITE |
+ ((brw->query.index * 2) * sizeof(uint64_t)));
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ ADVANCE_BATCH();
+
+ foreach(query, &brw->query.active_head) {
+ if (query->bo != brw->query.bo) {
+ if (query->bo != NULL)
+ brw_queryobj_get_results(query);
+ dri_bo_reference(brw->query.bo);
+ query->bo = brw->query.bo;
+ query->first_index = brw->query.index;
+ }
+ query->last_index = brw->query.index;
+ }
+ brw->query.active = GL_TRUE;
+}
+
+/** Called at batchbuffer flush to get an ending PS_DEPTH_COUNT */
+void
+brw_emit_query_end(struct brw_context *brw)
+{
+ struct intel_context *intel = &brw->intel;
+
+ if (!brw->query.active)
+ return;
+
+ BEGIN_BATCH(4, IGNORE_CLIPRECTS);
+ OUT_BATCH(_3DSTATE_PIPE_CONTROL |
+ PIPE_CONTROL_DEPTH_STALL |
+ PIPE_CONTROL_WRITE_DEPTH_COUNT);
+ OUT_RELOC(brw->query.bo,
+ I915_GEM_DOMAIN_INSTRUCTION, I915_GEM_DOMAIN_INSTRUCTION,
+ PIPE_CONTROL_GLOBAL_GTT_WRITE |
+ ((brw->query.index * 2 + 1) * sizeof(uint64_t)));
+ OUT_BATCH(0);
+ OUT_BATCH(0);
+ ADVANCE_BATCH();
+
+ brw->query.active = GL_FALSE;
+ brw->query.index++;
+}
+
+void brw_init_queryobj_functions(struct dd_function_table *functions)
+{
+ functions->NewQueryObject = brw_new_query_object;
+ functions->DeleteQuery = brw_delete_query;
+ functions->BeginQuery = brw_begin_query;
+ functions->EndQuery = brw_end_query;
+ functions->CheckQuery = brw_check_query;
+ functions->WaitQuery = brw_wait_query;
+}
{ "GL_ARB_fragment_program", NULL },
{ "GL_ARB_fragment_program_shadow", NULL },
{ "GL_ARB_fragment_shader", NULL },
+ { "GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions },
{ "GL_ARB_point_sprite", NULL },
{ "GL_ARB_shader_objects", GL_ARB_shader_objects_functions },
{ "GL_ARB_shading_language_100", GL_VERSION_2_0_functions },
{ NULL, NULL }
};
-#ifdef I915_MMIO_READ
-static const struct dri_extension arb_oc_extensions[] = {
- { "GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions },
+static const struct dri_extension arb_oq_extensions[] = {
{ NULL, NULL }
};
-#endif
static const struct dri_extension ttm_extensions[] = {
{ "GL_ARB_pixel_buffer_object", NULL },
if (intel == NULL || intel->ttm)
driInitExtensions(ctx, ttm_extensions, GL_FALSE);
-#ifdef I915_MMIO_READ
- if (intel == NULL ||
- (IS_965(intel->intelScreen->deviceID) &&
- intel->intelScreen->drmMinor >= 8))
- driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
-#endif
-
if (intel == NULL || IS_965(intel->intelScreen->deviceID))
driInitExtensions(ctx, brw_extensions, GL_FALSE);
}
}
}
-#ifdef I915_MMIO_READ
-static void
-intelBeginQuery(GLcontext *ctx, struct gl_query_object *q)
-{
- struct intel_context *intel = intel_context( ctx );
- struct drm_i915_mmio io = {
- .read_write = I915_MMIO_READ,
- .reg = MMIO_REGS_PS_DEPTH_COUNT,
- .data = &q->Result
- };
- intel->stats_wm++;
- intelFinish(&intel->ctx);
- drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
-}
-
-static void
-intelEndQuery(GLcontext *ctx, struct gl_query_object *q)
-{
- struct intel_context *intel = intel_context( ctx );
- GLuint64EXT tmp;
- struct drm_i915_mmio io = {
- .read_write = I915_MMIO_READ,
- .reg = MMIO_REGS_PS_DEPTH_COUNT,
- .data = &tmp
- };
- intelFinish(&intel->ctx);
- drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
- q->Result = tmp - q->Result;
- q->Ready = GL_TRUE;
- intel->stats_wm--;
-}
-#endif
-
void
intelInitDriverFunctions(struct dd_function_table *functions)
{
functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
-#ifdef I915_MMIO_READ
- functions->BeginQuery = intelBeginQuery;
- functions->EndQuery = intelEndQuery;
-#endif
-
intelInitTextureFuncs(functions);
intelInitStateFuncs(functions);
intelInitBufferFuncs(functions);
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