--- /dev/null
+/**************************************************************************
+ *
+ * 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
+ * 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 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.
+ *
+ **************************************************************************/
+
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/extensions.h"
+#include "main/fbobject.h"
+#include "main/framebuffer.h"
+#include "main/imports.h"
+#include "main/points.h"
+#include "main/renderbuffer.h"
+
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "tnl/tnl.h"
+#include "drivers/common/driverfuncs.h"
+#include "drivers/common/meta.h"
+
+#include "intel_chipset.h"
+#include "intel_buffers.h"
+#include "intel_tex.h"
+#include "intel_batchbuffer.h"
+#include "intel_clear.h"
+#include "intel_extensions.h"
+#include "intel_pixel.h"
+#include "intel_regions.h"
+#include "intel_buffer_objects.h"
+#include "intel_fbo.h"
+#include "intel_bufmgr.h"
+#include "intel_screen.h"
+#include "intel_mipmap_tree.h"
+
+#include "utils.h"
+#include "util/debug.h"
+#include "util/ralloc.h"
+
+int INTEL_DEBUG = (0);
+
+const char *const i915_vendor_string = "Intel Open Source Technology Center";
+
+const char *
+i915_get_renderer_string(unsigned deviceID)
+{
+ const char *chipset;
+ static char buffer[128];
+
+ switch (deviceID) {
+#undef CHIPSET
+#define CHIPSET(id, symbol, str) case id: chipset = str; break;
+#include "pci_ids/i915_pci_ids.h"
+ default:
+ chipset = "Unknown Intel Chipset";
+ break;
+ }
+
+ (void) driGetRendererString(buffer, chipset, 0);
+ return buffer;
+}
+
+static const GLubyte *
+intelGetString(struct gl_context * ctx, GLenum name)
+{
+ const struct intel_context *const intel = intel_context(ctx);
+
+ switch (name) {
+ case GL_VENDOR:
+ return (GLubyte *) i915_vendor_string;
+
+ case GL_RENDERER:
+ return
+ (GLubyte *) i915_get_renderer_string(intel->intelScreen->deviceID);
+
+ default:
+ return NULL;
+ }
+}
+
+#define flushFront(screen) ((screen)->image.loader ? (screen)->image.loader->flushFrontBuffer : (screen)->dri2.loader->flushFrontBuffer)
+
+static void
+intel_flush_front(struct gl_context *ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+ __DRIcontext *driContext = intel->driContext;
+ __DRIdrawable *driDrawable = driContext->driDrawablePriv;
+ __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
+
+ if (intel->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ if (flushFront(screen) &&
+ driDrawable &&
+ driDrawable->loaderPrivate) {
+ flushFront(screen)(driDrawable, driDrawable->loaderPrivate);
+
+ /* We set the dirty bit in intel_prepare_render() if we're
+ * front buffer rendering once we get there.
+ */
+ intel->front_buffer_dirty = false;
+ }
+ }
+}
+
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable);
+
+static unsigned
+intel_bits_per_pixel(const struct intel_renderbuffer *rb)
+{
+ return _mesa_get_format_bytes(intel_rb_format(rb)) * 8;
+}
+
+static void
+intel_query_dri2_buffers(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ __DRIbuffer **buffers,
+ int *count);
+
+static void
+intel_process_dri2_buffer(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ __DRIbuffer *buffer,
+ struct intel_renderbuffer *rb,
+ const char *buffer_name);
+
+static void
+intel_update_dri2_buffers(struct intel_context *intel, __DRIdrawable *drawable)
+{
+ __DRIbuffer *buffers = NULL;
+ int i, count;
+ const char *region_name;
+ struct intel_renderbuffer *rb;
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+
+ intel_query_dri2_buffers(intel, drawable, &buffers, &count);
+
+ if (buffers == NULL)
+ return;
+
+ for (i = 0; i < count; i++) {
+ switch (buffers[i].attachment) {
+ case __DRI_BUFFER_FRONT_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ region_name = "dri2 front buffer";
+ break;
+
+ case __DRI_BUFFER_FAKE_FRONT_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ region_name = "dri2 fake front buffer";
+ break;
+
+ case __DRI_BUFFER_BACK_LEFT:
+ rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+ region_name = "dri2 back buffer";
+ break;
+
+ case __DRI_BUFFER_DEPTH:
+ case __DRI_BUFFER_HIZ:
+ case __DRI_BUFFER_DEPTH_STENCIL:
+ case __DRI_BUFFER_STENCIL:
+ case __DRI_BUFFER_ACCUM:
+ default:
+ fprintf(stderr,
+ "unhandled buffer attach event, attachment type %d\n",
+ buffers[i].attachment);
+ return;
+ }
+
+ intel_process_dri2_buffer(intel, drawable, &buffers[i], rb, region_name);
+ }
+}
+
+void
+intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
+{
+ struct intel_context *intel = context->driverPrivate;
+ __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+
+ /* Set this up front, so that in case our buffers get invalidated
+ * while we're getting new buffers, we don't clobber the stamp and
+ * thus ignore the invalidate. */
+ drawable->lastStamp = drawable->dri2.stamp;
+
+ if (unlikely(INTEL_DEBUG & DEBUG_DRI))
+ fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
+
+ if (screen->image.loader)
+ intel_update_image_buffers(intel, drawable);
+ else
+ intel_update_dri2_buffers(intel, drawable);
+
+ driUpdateFramebufferSize(&intel->ctx, drawable);
+}
+
+/**
+ * intel_prepare_render should be called anywhere that curent read/drawbuffer
+ * state is required.
+ */
+void
+intel_prepare_render(struct intel_context *intel)
+{
+ __DRIcontext *driContext = intel->driContext;
+ __DRIdrawable *drawable;
+
+ drawable = driContext->driDrawablePriv;
+ if (drawable && drawable->dri2.stamp != driContext->dri2.draw_stamp) {
+ if (drawable->lastStamp != drawable->dri2.stamp)
+ intel_update_renderbuffers(driContext, drawable);
+ intel_draw_buffer(&intel->ctx);
+ driContext->dri2.draw_stamp = drawable->dri2.stamp;
+ }
+
+ drawable = driContext->driReadablePriv;
+ if (drawable && drawable->dri2.stamp != driContext->dri2.read_stamp) {
+ if (drawable->lastStamp != drawable->dri2.stamp)
+ intel_update_renderbuffers(driContext, drawable);
+ driContext->dri2.read_stamp = drawable->dri2.stamp;
+ }
+
+ /* If we're currently rendering to the front buffer, the rendering
+ * that will happen next will probably dirty the front buffer. So
+ * mark it as dirty here.
+ */
+ if (_mesa_is_front_buffer_drawing(intel->ctx.DrawBuffer))
+ intel->front_buffer_dirty = true;
+
+ /* Wait for the swapbuffers before the one we just emitted, so we
+ * don't get too many swaps outstanding for apps that are GPU-heavy
+ * but not CPU-heavy.
+ *
+ * We're using intelDRI2Flush (called from the loader before
+ * swapbuffer) and glFlush (for front buffer rendering) as the
+ * indicator that a frame is done and then throttle when we get
+ * here as we prepare to render the next frame. At this point for
+ * round trips for swap/copy and getting new buffers are done and
+ * we'll spend less time waiting on the GPU.
+ *
+ * Unfortunately, we don't have a handle to the batch containing
+ * the swap, and getting our hands on that doesn't seem worth it,
+ * so we just us the first batch we emitted after the last swap.
+ */
+ if (intel->need_throttle && intel->first_post_swapbuffers_batch) {
+ if (!intel->disable_throttling)
+ drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
+ drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
+ intel->first_post_swapbuffers_batch = NULL;
+ intel->need_throttle = false;
+ }
+}
+
+static void
+intel_noninvalidate_viewport(struct gl_context *ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+ __DRIcontext *driContext = intel->driContext;
+
+ intelCalcViewport(ctx);
+
+ if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) {
+ dri2InvalidateDrawable(driContext->driDrawablePriv);
+ dri2InvalidateDrawable(driContext->driReadablePriv);
+ }
+}
+
+static void
+intel_viewport(struct gl_context *ctx)
+{
+ intelCalcViewport(ctx);
+}
+
+static const struct debug_control debug_control[] = {
+ { "tex", DEBUG_TEXTURE},
+ { "state", DEBUG_STATE},
+ { "blit", DEBUG_BLIT},
+ { "mip", DEBUG_MIPTREE},
+ { "fall", DEBUG_PERF},
+ { "perf", DEBUG_PERF},
+ { "bat", DEBUG_BATCH},
+ { "pix", DEBUG_PIXEL},
+ { "buf", DEBUG_BUFMGR},
+ { "reg", DEBUG_REGION},
+ { "fbo", DEBUG_FBO},
+ { "fs", DEBUG_WM },
+ { "sync", DEBUG_SYNC},
+ { "dri", DEBUG_DRI },
+ { "stats", DEBUG_STATS },
+ { "wm", DEBUG_WM },
+ { "aub", DEBUG_AUB },
+ { NULL, 0 }
+};
+
+
+static void
+intelInvalidateState(struct gl_context * ctx, GLuint new_state)
+{
+ struct intel_context *intel = intel_context(ctx);
+
+ if (ctx->swrast_context)
+ _swrast_InvalidateState(ctx, new_state);
+ _vbo_InvalidateState(ctx, new_state);
+
+ intel->NewGLState |= new_state;
+
+ if (intel->vtbl.invalidate_state)
+ intel->vtbl.invalidate_state( intel, new_state );
+}
+
+void
+intel_flush_rendering_to_batch(struct gl_context *ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+
+ if (intel->Fallback)
+ _swrast_flush(ctx);
+
+ INTEL_FIREVERTICES(intel);
+}
+
+void
+_intel_flush(struct gl_context *ctx, const char *file, int line)
+{
+ struct intel_context *intel = intel_context(ctx);
+
+ intel_flush_rendering_to_batch(ctx);
+
+ if (intel->batch.used)
+ _intel_batchbuffer_flush(intel, file, line);
+}
+
+static void
+intel_glFlush(struct gl_context *ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+
+ intel_flush(ctx);
+ intel_flush_front(ctx);
+ if (_mesa_is_front_buffer_drawing(ctx->DrawBuffer))
+ intel->need_throttle = true;
+}
+
+void
+intelFinish(struct gl_context * ctx)
+{
+ struct intel_context *intel = intel_context(ctx);
+
+ intel_flush(ctx);
+ intel_flush_front(ctx);
+
+ if (intel->batch.last_bo)
+ drm_intel_bo_wait_rendering(intel->batch.last_bo);
+}
+
+void
+intelInitDriverFunctions(struct dd_function_table *functions)
+{
+ _mesa_init_driver_functions(functions);
+
+ functions->Flush = intel_glFlush;
+ functions->Finish = intelFinish;
+ functions->GetString = intelGetString;
+ functions->UpdateState = intelInvalidateState;
+
+ intelInitTextureFuncs(functions);
+ intelInitTextureImageFuncs(functions);
+ intelInitTextureSubImageFuncs(functions);
+ intelInitTextureCopyImageFuncs(functions);
+ intelInitClearFuncs(functions);
+ intelInitBufferFuncs(functions);
+ intelInitPixelFuncs(functions);
+ intelInitBufferObjectFuncs(functions);
+ intel_init_syncobj_functions(functions);
+}
+
+bool
+intelInitContext(struct intel_context *intel,
+ int api,
+ unsigned major_version,
+ unsigned minor_version,
+ uint32_t flags,
+ const struct gl_config * mesaVis,
+ __DRIcontext * driContextPriv,
+ void *sharedContextPrivate,
+ struct dd_function_table *functions,
+ unsigned *dri_ctx_error)
+{
+ struct gl_context *ctx = &intel->ctx;
+ struct gl_context *shareCtx = (struct gl_context *) sharedContextPrivate;
+ __DRIscreen *sPriv = driContextPriv->driScreenPriv;
+ struct intel_screen *intelScreen = sPriv->driverPrivate;
+ int bo_reuse_mode;
+
+ /* Can't rely on invalidate events, fall back to glViewport hack */
+ if (!driContextPriv->driScreenPriv->dri2.useInvalidate)
+ functions->Viewport = intel_noninvalidate_viewport;
+ else
+ functions->Viewport = intel_viewport;
+
+ intel->intelScreen = intelScreen;
+
+ if (!_mesa_initialize_context(&intel->ctx, api, mesaVis, shareCtx,
+ functions)) {
+ *dri_ctx_error = __DRI_CTX_ERROR_NO_MEMORY;
+ printf("%s: failed to init mesa context\n", __func__);
+ return false;
+ }
+
+ driContextPriv->driverPrivate = intel;
+ intel->driContext = driContextPriv;
+
+ intel->gen = intelScreen->gen;
+
+ const int devID = intelScreen->deviceID;
+
+ intel->is_945 = IS_945(devID);
+
+ intel->has_swizzling = intel->intelScreen->hw_has_swizzling;
+
+ memset(&ctx->TextureFormatSupported,
+ 0, sizeof(ctx->TextureFormatSupported));
+
+ driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
+ sPriv->myNum, "i915");
+ intel->maxBatchSize = 4096;
+
+ /* Estimate the size of the mappable aperture into the GTT. There's an
+ * ioctl to get the whole GTT size, but not one to get the mappable subset.
+ * It turns out it's basically always 256MB, though some ancient hardware
+ * was smaller.
+ */
+ uint32_t gtt_size = 256 * 1024 * 1024;
+ if (intel->gen == 2)
+ gtt_size = 128 * 1024 * 1024;
+
+ /* We don't want to map two objects such that a memcpy between them would
+ * just fault one mapping in and then the other over and over forever. So
+ * we would need to divide the GTT size by 2. Additionally, some GTT is
+ * taken up by things like the framebuffer and the ringbuffer and such, so
+ * be more conservative.
+ */
+ intel->max_gtt_map_object_size = gtt_size / 4;
+
+ intel->bufmgr = intelScreen->bufmgr;
+
+ bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
+ switch (bo_reuse_mode) {
+ case DRI_CONF_BO_REUSE_DISABLED:
+ break;
+ case DRI_CONF_BO_REUSE_ALL:
+ intel_bufmgr_gem_enable_reuse(intel->bufmgr);
+ break;
+ }
+
+ ctx->Const.MinLineWidth = 1.0;
+ ctx->Const.MinLineWidthAA = 1.0;
+ ctx->Const.MaxLineWidth = 7.0;
+ ctx->Const.MaxLineWidthAA = 7.0;
+ ctx->Const.LineWidthGranularity = 0.5;
+
+ ctx->Const.MinPointSize = 1.0;
+ ctx->Const.MinPointSizeAA = 1.0;
+ ctx->Const.MaxPointSize = 255.0;
+ ctx->Const.MaxPointSizeAA = 3.0;
+ ctx->Const.PointSizeGranularity = 1.0;
+
+ ctx->Const.StripTextureBorder = GL_TRUE;
+
+ /* reinitialize the context point state.
+ * It depend on constants in __struct gl_contextRec::Const
+ */
+ _mesa_init_point(ctx);
+
+ ctx->Const.MaxRenderbufferSize = 2048;
+
+ _swrast_CreateContext(ctx);
+ _vbo_CreateContext(ctx);
+ if (ctx->swrast_context) {
+ _tnl_CreateContext(ctx);
+ _swsetup_CreateContext(ctx);
+
+ /* Configure swrast to match hardware characteristics: */
+ _swrast_allow_pixel_fog(ctx, false);
+ _swrast_allow_vertex_fog(ctx, true);
+ }
+
+ _mesa_meta_init(ctx);
+
+ intel->hw_stipple = 1;
+
+ intel->RenderIndex = ~0;
+
+ intelInitExtensions(ctx);
+
+ INTEL_DEBUG = parse_debug_string(getenv("INTEL_DEBUG"), debug_control);
+ if (INTEL_DEBUG & DEBUG_BUFMGR)
+ dri_bufmgr_set_debug(intel->bufmgr, true);
+ if (INTEL_DEBUG & DEBUG_PERF)
+ intel->perf_debug = true;
+
+ if (INTEL_DEBUG & DEBUG_AUB)
+ drm_intel_bufmgr_gem_set_aub_dump(intel->bufmgr, true);
+
+ intel_batchbuffer_init(intel);
+
+ intel_fbo_init(intel);
+
+ intel->use_early_z = driQueryOptionb(&intel->optionCache, "early_z");
+
+ intel->prim.primitive = ~0;
+
+ /* Force all software fallbacks */
+ if (driQueryOptionb(&intel->optionCache, "no_rast")) {
+ fprintf(stderr, "disabling 3D rasterization\n");
+ intel->no_rast = 1;
+ }
+
+ if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
+ fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
+ intel->always_flush_batch = 1;
+ }
+
+ if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
+ fprintf(stderr, "flushing GPU caches before/after each draw call\n");
+ intel->always_flush_cache = 1;
+ }
+
+ if (driQueryOptionb(&intel->optionCache, "disable_throttling")) {
+ fprintf(stderr, "disabling flush throttling\n");
+ intel->disable_throttling = 1;
+ }
+
+ return true;
+}
+
+void
+intelDestroyContext(__DRIcontext * driContextPriv)
+{
+ struct intel_context *intel =
+ (struct intel_context *) driContextPriv->driverPrivate;
+ struct gl_context *ctx = &intel->ctx;
+
+ assert(intel); /* should never be null */
+ if (intel) {
+ INTEL_FIREVERTICES(intel);
+
+ /* Dump a final BMP in case the application doesn't call SwapBuffers */
+ if (INTEL_DEBUG & DEBUG_AUB) {
+ intel_batchbuffer_flush(intel);
+ aub_dump_bmp(&intel->ctx);
+ }
+
+ _mesa_meta_free(&intel->ctx);
+
+ intel->vtbl.destroy(intel);
+
+ if (ctx->swrast_context) {
+ _swsetup_DestroyContext(&intel->ctx);
+ _tnl_DestroyContext(&intel->ctx);
+ }
+ _vbo_DestroyContext(&intel->ctx);
+
+ if (ctx->swrast_context)
+ _swrast_DestroyContext(&intel->ctx);
+ intel->Fallback = 0x0; /* don't call _swrast_Flush later */
+
+ intel_batchbuffer_free(intel);
+
+ free(intel->prim.vb);
+ intel->prim.vb = NULL;
+ drm_intel_bo_unreference(intel->prim.vb_bo);
+ intel->prim.vb_bo = NULL;
+ drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
+ intel->first_post_swapbuffers_batch = NULL;
+
+ driDestroyOptionCache(&intel->optionCache);
+
+ /* free the Mesa context */
+ _mesa_free_context_data(&intel->ctx);
+
+ _math_matrix_dtr(&intel->ViewportMatrix);
+
+ ralloc_free(intel);
+ driContextPriv->driverPrivate = NULL;
+ }
+}
+
+GLboolean
+intelUnbindContext(__DRIcontext * driContextPriv)
+{
+ /* Unset current context and dispath table */
+ _mesa_make_current(NULL, NULL, NULL);
+
+ return true;
+}
+
+GLboolean
+intelMakeCurrent(__DRIcontext * driContextPriv,
+ __DRIdrawable * driDrawPriv,
+ __DRIdrawable * driReadPriv)
+{
+ struct intel_context *intel;
+ GET_CURRENT_CONTEXT(curCtx);
+
+ if (driContextPriv)
+ intel = (struct intel_context *) driContextPriv->driverPrivate;
+ else
+ intel = NULL;
+
+ /* According to the glXMakeCurrent() man page: "Pending commands to
+ * the previous context, if any, are flushed before it is released."
+ * But only flush if we're actually changing contexts.
+ */
+ if (intel_context(curCtx) && intel_context(curCtx) != intel) {
+ _mesa_flush(curCtx);
+ }
+
+ if (driContextPriv) {
+ struct gl_context *ctx = &intel->ctx;
+ struct gl_framebuffer *fb, *readFb;
+
+ if (driDrawPriv == NULL && driReadPriv == NULL) {
+ fb = _mesa_get_incomplete_framebuffer();
+ readFb = _mesa_get_incomplete_framebuffer();
+ } else {
+ fb = driDrawPriv->driverPrivate;
+ readFb = driReadPriv->driverPrivate;
+ driContextPriv->dri2.draw_stamp = driDrawPriv->dri2.stamp - 1;
+ driContextPriv->dri2.read_stamp = driReadPriv->dri2.stamp - 1;
+ }
+
+ intel_prepare_render(intel);
+ _mesa_make_current(ctx, fb, readFb);
+
+ /* We do this in intel_prepare_render() too, but intel->ctx.DrawBuffer
+ * is NULL at that point. We can't call _mesa_makecurrent()
+ * first, since we need the buffer size for the initial
+ * viewport. So just call intel_draw_buffer() again here. */
+ intel_draw_buffer(ctx);
+ }
+ else {
+ _mesa_make_current(NULL, NULL, NULL);
+ }
+
+ return true;
+}
+
+/**
+ * \brief Query DRI2 to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * DRI2GetBuffers() or DRI2GetBuffersWithFormat().
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable Drawable whose buffers are queried.
+ * \param buffers [out] List of buffers returned by DRI2 query.
+ * \param buffer_count [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ * \see DRI2GetBuffers()
+ * \see DRI2GetBuffersWithFormat()
+ */
+static void
+intel_query_dri2_buffers(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ __DRIbuffer **buffers,
+ int *buffer_count)
+{
+ __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ int i = 0;
+ unsigned attachments[8];
+
+ struct intel_renderbuffer *front_rb;
+ struct intel_renderbuffer *back_rb;
+
+ front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+ memset(attachments, 0, sizeof(attachments));
+ if ((_mesa_is_front_buffer_drawing(fb) ||
+ _mesa_is_front_buffer_reading(fb) ||
+ !back_rb) && front_rb) {
+ /* If a fake front buffer is in use, then querying for
+ * __DRI_BUFFER_FRONT_LEFT will cause the server to copy the image from
+ * the real front buffer to the fake front buffer. So before doing the
+ * query, we need to make sure all the pending drawing has landed in the
+ * real front buffer.
+ */
+ intel_flush(&intel->ctx);
+ intel_flush_front(&intel->ctx);
+
+ attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
+ attachments[i++] = intel_bits_per_pixel(front_rb);
+ } else if (front_rb && intel->front_buffer_dirty) {
+ /* We have pending front buffer rendering, but we aren't querying for a
+ * front buffer. If the front buffer we have is a fake front buffer,
+ * the X server is going to throw it away when it processes the query.
+ * So before doing the query, make sure all the pending drawing has
+ * landed in the real front buffer.
+ */
+ intel_flush(&intel->ctx);
+ intel_flush_front(&intel->ctx);
+ }
+
+ if (back_rb) {
+ attachments[i++] = __DRI_BUFFER_BACK_LEFT;
+ attachments[i++] = intel_bits_per_pixel(back_rb);
+ }
+
+ assert(i <= ARRAY_SIZE(attachments));
+
+ *buffers = screen->dri2.loader->getBuffersWithFormat(drawable,
+ &drawable->w,
+ &drawable->h,
+ attachments, i / 2,
+ buffer_count,
+ drawable->loaderPrivate);
+}
+
+/**
+ * \brief Assign a DRI buffer's DRM region to a renderbuffer.
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \par Note:
+ * DRI buffers whose attachment point is DRI2BufferStencil or
+ * DRI2BufferDepthStencil are handled as special cases.
+ *
+ * \param buffer_name is a human readable name, such as "dri2 front buffer",
+ * that is passed to intel_region_alloc_for_handle().
+ *
+ * \see intel_update_renderbuffers()
+ * \see intel_region_alloc_for_handle()
+ */
+static void
+intel_process_dri2_buffer(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ __DRIbuffer *buffer,
+ struct intel_renderbuffer *rb,
+ const char *buffer_name)
+{
+ struct intel_region *region = NULL;
+
+ if (!rb)
+ return;
+
+ /* We try to avoid closing and reopening the same BO name, because the first
+ * use of a mapping of the buffer involves a bunch of page faulting which is
+ * moderately expensive.
+ */
+ if (rb->mt &&
+ rb->mt->region &&
+ rb->mt->region->name == buffer->name)
+ return;
+
+ if (unlikely(INTEL_DEBUG & DEBUG_DRI)) {
+ fprintf(stderr,
+ "attaching buffer %d, at %d, cpp %d, pitch %d\n",
+ buffer->name, buffer->attachment,
+ buffer->cpp, buffer->pitch);
+ }
+
+ intel_miptree_release(&rb->mt);
+ region = intel_region_alloc_for_handle(intel->intelScreen,
+ buffer->cpp,
+ drawable->w,
+ drawable->h,
+ buffer->pitch,
+ buffer->name,
+ buffer_name);
+ if (!region)
+ return;
+
+ rb->mt = intel_miptree_create_for_dri2_buffer(intel,
+ buffer->attachment,
+ intel_rb_format(rb),
+ region);
+ intel_region_release(®ion);
+}
+
+/**
+ * \brief Query DRI Image loader to obtain a DRIdrawable's buffers.
+ *
+ * To determine which DRI buffers to request, examine the renderbuffers
+ * attached to the drawable's framebuffer. Then request the buffers with
+ * dri3
+ *
+ * This is called from intel_update_renderbuffers().
+ *
+ * \param drawable Drawable whose buffers are queried.
+ * \param buffers [out] List of buffers returned by DRI2 query.
+ * \param buffer_count [out] Number of buffers returned.
+ *
+ * \see intel_update_renderbuffers()
+ */
+
+static void
+intel_update_image_buffer(struct intel_context *intel,
+ __DRIdrawable *drawable,
+ struct intel_renderbuffer *rb,
+ __DRIimage *buffer,
+ enum __DRIimageBufferMask buffer_type)
+{
+ struct intel_region *region = buffer->region;
+
+ if (!rb || !region)
+ return;
+
+ unsigned num_samples = rb->Base.Base.NumSamples;
+
+ if (rb->mt &&
+ rb->mt->region &&
+ rb->mt->region == region)
+ return;
+
+ intel_miptree_release(&rb->mt);
+ rb->mt = intel_miptree_create_for_image_buffer(intel,
+ buffer_type,
+ intel_rb_format(rb),
+ num_samples,
+ region);
+}
+
+
+static void
+intel_update_image_buffers(struct intel_context *intel, __DRIdrawable *drawable)
+{
+ struct gl_framebuffer *fb = drawable->driverPrivate;
+ __DRIscreen *screen = intel->intelScreen->driScrnPriv;
+ struct intel_renderbuffer *front_rb;
+ struct intel_renderbuffer *back_rb;
+ struct __DRIimageList images;
+ unsigned int format;
+ uint32_t buffer_mask = 0;
+
+ front_rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
+ back_rb = intel_get_renderbuffer(fb, BUFFER_BACK_LEFT);
+
+ if (back_rb)
+ format = intel_rb_format(back_rb);
+ else if (front_rb)
+ format = intel_rb_format(front_rb);
+ else
+ return;
+
+ if (front_rb && (_mesa_is_front_buffer_drawing(fb) ||
+ _mesa_is_front_buffer_reading(fb) || !back_rb)) {
+ buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
+ }
+
+ if (back_rb)
+ buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
+
+ (*screen->image.loader->getBuffers) (drawable,
+ driGLFormatToImageFormat(format),
+ &drawable->dri2.stamp,
+ drawable->loaderPrivate,
+ buffer_mask,
+ &images);
+
+ if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
+ drawable->w = images.front->width;
+ drawable->h = images.front->height;
+ intel_update_image_buffer(intel,
+ drawable,
+ front_rb,
+ images.front,
+ __DRI_IMAGE_BUFFER_FRONT);
+ }
+ if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
+ drawable->w = images.back->width;
+ drawable->h = images.back->height;
+ intel_update_image_buffer(intel,
+ drawable,
+ back_rb,
+ images.back,
+ __DRI_IMAGE_BUFFER_BACK);
+ }
+}
projects / mesa.git / blobdiff