diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/Makefile.sources | 1 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_context.c | 685 | ||||
| -rw-r--r-- | src/mesa/drivers/dri/i965/intel_context.c | 729 |
3 files changed, 685 insertions, 730 deletions
diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources index 4e06ee2a55e..b8e83ef237d 100644 --- a/src/mesa/drivers/dri/i965/Makefile.sources +++ b/src/mesa/drivers/dri/i965/Makefile.sources @@ -7,7 +7,6 @@ i965_FILES = \ intel_blit.c \ intel_buffer_objects.c \ intel_buffers.c \ - intel_context.c \ intel_debug.c \ intel_extensions.c \ intel_fbo.c \ diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c index 66459af3d6a..fd1dabaadcb 100644 --- a/src/mesa/drivers/dri/i965/brw_context.c +++ b/src/mesa/drivers/dri/i965/brw_context.c @@ -1,4 +1,5 @@ /* + Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. Copyright (C) Intel Corp. 2006. All Rights Reserved. Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to develop this 3D driver. @@ -32,6 +33,7 @@ #include "main/api_exec.h" #include "main/context.h" +#include "main/fbobject.h" #include "main/imports.h" #include "main/macros.h" #include "main/points.h" @@ -41,17 +43,27 @@ #include "vbo/vbo_context.h" +#include "drivers/common/driverfuncs.h" +#include "drivers/common/meta.h" +#include "utils.h" + #include "brw_context.h" #include "brw_defines.h" #include "brw_draw.h" #include "brw_state.h" +#include "intel_batchbuffer.h" +#include "intel_buffer_objects.h" +#include "intel_buffers.h" #include "intel_fbo.h" #include "intel_mipmap_tree.h" +#include "intel_pixel.h" #include "intel_regions.h" #include "intel_tex.h" #include "intel_tex_obj.h" +#include "swrast_setup/swrast_setup.h" +#include "tnl/tnl.h" #include "tnl/t_pipeline.h" #include "glsl/ralloc.h" @@ -83,6 +95,143 @@ brw_query_samples_for_format(struct gl_context *ctx, GLenum target, } } +static const GLubyte * +intelGetString(struct gl_context * ctx, GLenum name) +{ + const struct brw_context *const brw = brw_context(ctx); + const char *chipset; + static char buffer[128]; + + switch (name) { + case GL_VENDOR: + return (GLubyte *) "Intel Open Source Technology Center"; + break; + + case GL_RENDERER: + switch (brw->intelScreen->deviceID) { +#undef CHIPSET +#define CHIPSET(id, family, str) case id: chipset = str; break; +#include "pci_ids/i965_pci_ids.h" + default: + chipset = "Unknown Intel Chipset"; + break; + } + + (void) driGetRendererString(buffer, chipset, 0); + return (GLubyte *) buffer; + + default: + return NULL; + } +} + +static void +intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) +{ + struct brw_context *brw = brw_context(ctx); + __DRIcontext *driContext = brw->driContext; + + if (brw->saved_viewport) + brw->saved_viewport(ctx, x, y, w, h); + + if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { + dri2InvalidateDrawable(driContext->driDrawablePriv); + dri2InvalidateDrawable(driContext->driReadablePriv); + } +} + +static void +intelInvalidateState(struct gl_context * ctx, GLuint new_state) +{ + struct brw_context *brw = brw_context(ctx); + + if (ctx->swrast_context) + _swrast_InvalidateState(ctx, new_state); + _vbo_InvalidateState(ctx, new_state); + + brw->NewGLState |= new_state; +} + +static void +intel_flush_front(struct gl_context *ctx) +{ + struct brw_context *brw = brw_context(ctx); + __DRIcontext *driContext = brw->driContext; + __DRIdrawable *driDrawable = driContext->driDrawablePriv; + __DRIscreen *const screen = brw->intelScreen->driScrnPriv; + + if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { + if (screen->dri2.loader->flushFrontBuffer != NULL && + driDrawable && + driDrawable->loaderPrivate) { + + /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT. + * + * This potentially resolves both front and back buffer. It + * is unnecessary to resolve the back, but harms nothing except + * performance. And no one cares about front-buffer render + * performance. + */ + intel_resolve_for_dri2_flush(brw, driDrawable); + intel_batchbuffer_flush(brw); + + screen->dri2.loader->flushFrontBuffer(driDrawable, + driDrawable->loaderPrivate); + + /* We set the dirty bit in intel_prepare_render() if we're + * front buffer rendering once we get there. + */ + brw->front_buffer_dirty = false; + } + } +} + +static void +intel_glFlush(struct gl_context *ctx) +{ + struct brw_context *brw = brw_context(ctx); + + intel_batchbuffer_flush(brw); + intel_flush_front(ctx); + if (brw->is_front_buffer_rendering) + brw->need_throttle = true; +} + +void +intelFinish(struct gl_context * ctx) +{ + struct brw_context *brw = brw_context(ctx); + + intel_glFlush(ctx); + + if (brw->batch.last_bo) + drm_intel_bo_wait_rendering(brw->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); + brw_init_object_purgeable_functions(functions); +} + static void brwInitDriverFunctions(struct intel_screen *screen, struct dd_function_table *functions) { @@ -496,3 +645,539 @@ brwCreateContext(gl_api api, return true; } +bool +intelInitContext(struct brw_context *brw, + int api, + unsigned major_version, + unsigned minor_version, + const struct gl_config * mesaVis, + __DRIcontext * driContextPriv, + void *sharedContextPrivate, + struct dd_function_table *functions, + unsigned *dri_ctx_error) +{ + struct gl_context *ctx = &brw->ctx; + + /* GLX uses DRI2 invalidate events to handle window resizing. + * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib), + * which doesn't provide a mechanism for snooping the event queues. + * + * So EGL still relies on viewport hacks to handle window resizing. + * This should go away with DRI3000. + */ + if (!driContextPriv->driScreenPriv->dri2.useInvalidate) { + brw->saved_viewport = functions->Viewport; + functions->Viewport = intel_viewport; + } + + /* 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; + + /* 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. + */ + brw->max_gtt_map_object_size = gtt_size / 4; + + /* Initialize the software rasterizer and helper modules. + * + * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for + * software fallbacks (which we have to support on legacy GL to do weird + * glDrawPixels(), glBitmap(), and other functions). + */ + if (api != API_OPENGL_CORE && api != API_OPENGLES2) { + _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); + + intelInitExtensions(ctx); + + brw_process_intel_debug_variable(brw); + + intel_batchbuffer_init(brw); + + intel_fbo_init(brw); + + return true; +} + +void +intelDestroyContext(__DRIcontext * driContextPriv) +{ + struct brw_context *brw = + (struct brw_context *) driContextPriv->driverPrivate; + struct gl_context *ctx = &brw->ctx; + + assert(brw); /* should never be null */ + if (brw) { + /* Dump a final BMP in case the application doesn't call SwapBuffers */ + if (INTEL_DEBUG & DEBUG_AUB) { + intel_batchbuffer_flush(brw); + aub_dump_bmp(&brw->ctx); + } + + _mesa_meta_free(&brw->ctx); + + brw->vtbl.destroy(brw); + + if (ctx->swrast_context) { + _swsetup_DestroyContext(&brw->ctx); + _tnl_DestroyContext(&brw->ctx); + } + _vbo_DestroyContext(&brw->ctx); + + if (ctx->swrast_context) + _swrast_DestroyContext(&brw->ctx); + + intel_batchbuffer_free(brw); + + drm_intel_bo_unreference(brw->first_post_swapbuffers_batch); + brw->first_post_swapbuffers_batch = NULL; + + driDestroyOptionCache(&brw->optionCache); + + /* free the Mesa context */ + _mesa_free_context_data(&brw->ctx); + + ralloc_free(brw); + driContextPriv->driverPrivate = NULL; + } +} + +GLboolean +intelUnbindContext(__DRIcontext * driContextPriv) +{ + /* Unset current context and dispath table */ + _mesa_make_current(NULL, NULL, NULL); + + return true; +} + +/** + * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior + * on window system framebuffers. + * + * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if + * your renderbuffer can do sRGB encode, and you can flip a switch that does + * sRGB encode if the renderbuffer can handle it. You can ask specifically + * for a visual where you're guaranteed to be capable, but it turns out that + * everyone just makes all their ARGB8888 visuals capable and doesn't offer + * incapable ones, becuase there's no difference between the two in resources + * used. Applications thus get built that accidentally rely on the default + * visual choice being sRGB, so we make ours sRGB capable. Everything sounds + * great... + * + * But for GLES2/3, they decided that it was silly to not turn on sRGB encode + * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent. + * So they removed the enable knob and made it "if the renderbuffer is sRGB + * capable, do sRGB encode". Then, for your window system renderbuffers, you + * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals + * and get no sRGB encode (assuming that both kinds of visual are available). + * Thus our choice to support sRGB by default on our visuals for desktop would + * result in broken rendering of GLES apps that aren't expecting sRGB encode. + * + * Unfortunately, renderbuffer setup happens before a context is created. So + * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3 + * context (without an sRGB visual, though we don't have sRGB visuals exposed + * yet), we go turn that back off before anyone finds out. + */ +static void +intel_gles3_srgb_workaround(struct brw_context *brw, + struct gl_framebuffer *fb) +{ + struct gl_context *ctx = &brw->ctx; + + if (_mesa_is_desktop_gl(ctx) || !fb->Visual.sRGBCapable) + return; + + /* Some day when we support the sRGB capable bit on visuals available for + * GLES, we'll need to respect that and not disable things here. + */ + fb->Visual.sRGBCapable = false; + for (int i = 0; i < BUFFER_COUNT; i++) { + if (fb->Attachment[i].Renderbuffer && + fb->Attachment[i].Renderbuffer->Format == MESA_FORMAT_SARGB8) { + fb->Attachment[i].Renderbuffer->Format = MESA_FORMAT_ARGB8888; + } + } +} + +GLboolean +intelMakeCurrent(__DRIcontext * driContextPriv, + __DRIdrawable * driDrawPriv, + __DRIdrawable * driReadPriv) +{ + struct brw_context *brw; + GET_CURRENT_CONTEXT(curCtx); + + if (driContextPriv) + brw = (struct brw_context *) driContextPriv->driverPrivate; + else + brw = 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 (brw_context(curCtx) && brw_context(curCtx) != brw) { + _mesa_flush(curCtx); + } + + if (driContextPriv) { + struct gl_context *ctx = &brw->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; + } + + /* The sRGB workaround changes the renderbuffer's format. We must change + * the format before the renderbuffer's miptree get's allocated, otherwise + * the formats of the renderbuffer and its miptree will differ. + */ + intel_gles3_srgb_workaround(brw, fb); + intel_gles3_srgb_workaround(brw, readFb); + + intel_prepare_render(brw); + _mesa_make_current(ctx, fb, readFb); + } else { + _mesa_make_current(NULL, NULL, NULL); + } + + return true; +} + +void +intel_resolve_for_dri2_flush(struct brw_context *brw, + __DRIdrawable *drawable) +{ + if (brw->gen < 6) { + /* MSAA and fast color clear are not supported, so don't waste time + * checking whether a resolve is needed. + */ + return; + } + + struct gl_framebuffer *fb = drawable->driverPrivate; + struct intel_renderbuffer *rb; + + /* Usually, only the back buffer will need to be downsampled. However, + * the front buffer will also need it if the user has rendered into it. + */ + static const gl_buffer_index buffers[2] = { + BUFFER_BACK_LEFT, + BUFFER_FRONT_LEFT, + }; + + for (int i = 0; i < 2; ++i) { + rb = intel_get_renderbuffer(fb, buffers[i]); + if (rb == NULL || rb->mt == NULL) + continue; + if (rb->mt->num_samples <= 1) + intel_miptree_resolve_color(brw, rb->mt); + else + intel_miptree_downsample(brw, rb->mt); + } +} + +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 brw_context *brw, + __DRIdrawable *drawable, + __DRIbuffer **buffers, + int *count); + +static void +intel_process_dri2_buffer(struct brw_context *brw, + __DRIdrawable *drawable, + __DRIbuffer *buffer, + struct intel_renderbuffer *rb, + const char *buffer_name); + +void +intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) +{ + struct gl_framebuffer *fb = drawable->driverPrivate; + struct intel_renderbuffer *rb; + struct brw_context *brw = context->driverPrivate; + __DRIbuffer *buffers = NULL; + int i, count; + const char *region_name; + + /* 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); + + intel_query_dri2_buffers(brw, 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(brw, drawable, &buffers[i], rb, region_name); + } + + driUpdateFramebufferSize(&brw->ctx, drawable); +} + +/** + * intel_prepare_render should be called anywhere that curent read/drawbuffer + * state is required. + */ +void +intel_prepare_render(struct brw_context *brw) +{ + __DRIcontext *driContext = brw->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); + 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 (brw->is_front_buffer_rendering) + brw->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 (brw->need_throttle && brw->first_post_swapbuffers_batch) { + if (!brw->disable_throttling) + drm_intel_bo_wait_rendering(brw->first_post_swapbuffers_batch); + drm_intel_bo_unreference(brw->first_post_swapbuffers_batch); + brw->first_post_swapbuffers_batch = NULL; + brw->need_throttle = false; + } +} + +/** + * \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 brw_context *brw, + __DRIdrawable *drawable, + __DRIbuffer **buffers, + int *buffer_count) +{ + __DRIscreen *screen = brw->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 ((brw->is_front_buffer_rendering || + brw->is_front_buffer_reading || + !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_batchbuffer_flush(brw); + intel_flush_front(&brw->ctx); + + attachments[i++] = __DRI_BUFFER_FRONT_LEFT; + attachments[i++] = intel_bits_per_pixel(front_rb); + } else if (front_rb && brw->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_batchbuffer_flush(brw); + intel_flush_front(&brw->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 brw_context *brw, + __DRIdrawable *drawable, + __DRIbuffer *buffer, + struct intel_renderbuffer *rb, + const char *buffer_name) +{ + struct intel_region *region = NULL; + + if (!rb) + return; + + unsigned num_samples = rb->Base.Base.NumSamples; + + /* 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 (num_samples == 0) { + if (rb->mt && + rb->mt->region && + rb->mt->region->name == buffer->name) + return; + } else { + if (rb->mt && + rb->mt->singlesample_mt && + rb->mt->singlesample_mt->region && + rb->mt->singlesample_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(brw->intelScreen, + buffer->cpp, + drawable->w, + drawable->h, + buffer->pitch, + buffer->name, + buffer_name); + if (!region) + return; + + rb->mt = intel_miptree_create_for_dri2_buffer(brw, + buffer->attachment, + intel_rb_format(rb), + num_samples, + region); + intel_region_release(®ion); +} diff --git a/src/mesa/drivers/dri/i965/intel_context.c b/src/mesa/drivers/dri/i965/intel_context.c deleted file mode 100644 index 8a48e632748..00000000000 --- a/src/mesa/drivers/dri/i965/intel_context.c +++ /dev/null @@ -1,729 +0,0 @@ -/************************************************************************** - * - * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. - * 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 TUNGSTEN GRAPHICS 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/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_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 "../glsl/ralloc.h" - -static const GLubyte * -intelGetString(struct gl_context * ctx, GLenum name) -{ - const struct brw_context *const brw = brw_context(ctx); - const char *chipset; - static char buffer[128]; - - switch (name) { - case GL_VENDOR: - return (GLubyte *) "Intel Open Source Technology Center"; - break; - - case GL_RENDERER: - switch (brw->intelScreen->deviceID) { -#undef CHIPSET -#define CHIPSET(id, family, str) case id: chipset = str; break; -#include "pci_ids/i965_pci_ids.h" - default: - chipset = "Unknown Intel Chipset"; - break; - } - - (void) driGetRendererString(buffer, chipset, 0); - return (GLubyte *) buffer; - - default: - return NULL; - } -} - -void -intel_resolve_for_dri2_flush(struct brw_context *brw, - __DRIdrawable *drawable) -{ - if (brw->gen < 6) { - /* MSAA and fast color clear are not supported, so don't waste time - * checking whether a resolve is needed. - */ - return; - } - - struct gl_framebuffer *fb = drawable->driverPrivate; - struct intel_renderbuffer *rb; - - /* Usually, only the back buffer will need to be downsampled. However, - * the front buffer will also need it if the user has rendered into it. - */ - static const gl_buffer_index buffers[2] = { - BUFFER_BACK_LEFT, - BUFFER_FRONT_LEFT, - }; - - for (int i = 0; i < 2; ++i) { - rb = intel_get_renderbuffer(fb, buffers[i]); - if (rb == NULL || rb->mt == NULL) - continue; - if (rb->mt->num_samples <= 1) - intel_miptree_resolve_color(brw, rb->mt); - else - intel_miptree_downsample(brw, rb->mt); - } -} - -static void -intel_flush_front(struct gl_context *ctx) -{ - struct brw_context *brw = brw_context(ctx); - __DRIcontext *driContext = brw->driContext; - __DRIdrawable *driDrawable = driContext->driDrawablePriv; - __DRIscreen *const screen = brw->intelScreen->driScrnPriv; - - if (brw->front_buffer_dirty && _mesa_is_winsys_fbo(ctx->DrawBuffer)) { - if (screen->dri2.loader->flushFrontBuffer != NULL && - driDrawable && - driDrawable->loaderPrivate) { - - /* Resolve before flushing FAKE_FRONT_LEFT to FRONT_LEFT. - * - * This potentially resolves both front and back buffer. It - * is unnecessary to resolve the back, but harms nothing except - * performance. And no one cares about front-buffer render - * performance. - */ - intel_resolve_for_dri2_flush(brw, driDrawable); - intel_batchbuffer_flush(brw); - - screen->dri2.loader->flushFrontBuffer(driDrawable, - driDrawable->loaderPrivate); - - /* We set the dirty bit in intel_prepare_render() if we're - * front buffer rendering once we get there. - */ - brw->front_buffer_dirty = false; - } - } -} - -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 brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer **buffers, - int *count); - -static void -intel_process_dri2_buffer(struct brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer *buffer, - struct intel_renderbuffer *rb, - const char *buffer_name); - -void -intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable) -{ - struct gl_framebuffer *fb = drawable->driverPrivate; - struct intel_renderbuffer *rb; - struct brw_context *brw = context->driverPrivate; - __DRIbuffer *buffers = NULL; - int i, count; - const char *region_name; - - /* 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); - - intel_query_dri2_buffers(brw, 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(brw, drawable, &buffers[i], rb, region_name); - } - - driUpdateFramebufferSize(&brw->ctx, drawable); -} - -/** - * intel_prepare_render should be called anywhere that curent read/drawbuffer - * state is required. - */ -void -intel_prepare_render(struct brw_context *brw) -{ - __DRIcontext *driContext = brw->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); - 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 (brw->is_front_buffer_rendering) - brw->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 (brw->need_throttle && brw->first_post_swapbuffers_batch) { - if (!brw->disable_throttling) - drm_intel_bo_wait_rendering(brw->first_post_swapbuffers_batch); - drm_intel_bo_unreference(brw->first_post_swapbuffers_batch); - brw->first_post_swapbuffers_batch = NULL; - brw->need_throttle = false; - } -} - -static void -intel_viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h) -{ - struct brw_context *brw = brw_context(ctx); - __DRIcontext *driContext = brw->driContext; - - if (brw->saved_viewport) - brw->saved_viewport(ctx, x, y, w, h); - - if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { - dri2InvalidateDrawable(driContext->driDrawablePriv); - dri2InvalidateDrawable(driContext->driReadablePriv); - } -} - -static void -intelInvalidateState(struct gl_context * ctx, GLuint new_state) -{ - struct brw_context *brw = brw_context(ctx); - - if (ctx->swrast_context) - _swrast_InvalidateState(ctx, new_state); - _vbo_InvalidateState(ctx, new_state); - - brw->NewGLState |= new_state; -} - -static void -intel_glFlush(struct gl_context *ctx) -{ - struct brw_context *brw = brw_context(ctx); - - intel_batchbuffer_flush(brw); - intel_flush_front(ctx); - if (brw->is_front_buffer_rendering) - brw->need_throttle = true; -} - -void -intelFinish(struct gl_context * ctx) -{ - struct brw_context *brw = brw_context(ctx); - - intel_glFlush(ctx); - - if (brw->batch.last_bo) - drm_intel_bo_wait_rendering(brw->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); - brw_init_object_purgeable_functions(functions); -} - -bool -intelInitContext(struct brw_context *brw, - int api, - unsigned major_version, - unsigned minor_version, - const struct gl_config * mesaVis, - __DRIcontext * driContextPriv, - void *sharedContextPrivate, - struct dd_function_table *functions, - unsigned *dri_ctx_error) -{ - struct gl_context *ctx = &brw->ctx; - - /* GLX uses DRI2 invalidate events to handle window resizing. - * Unfortunately, EGL does not - libEGL is written in XCB (not Xlib), - * which doesn't provide a mechanism for snooping the event queues. - * - * So EGL still relies on viewport hacks to handle window resizing. - * This should go away with DRI3000. - */ - if (!driContextPriv->driScreenPriv->dri2.useInvalidate) { - brw->saved_viewport = functions->Viewport; - functions->Viewport = intel_viewport; - } - - /* 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; - - /* 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. - */ - brw->max_gtt_map_object_size = gtt_size / 4; - - /* Initialize the software rasterizer and helper modules. - * - * As of GL 3.1 core, the gen4+ driver doesn't need the swrast context for - * software fallbacks (which we have to support on legacy GL to do weird - * glDrawPixels(), glBitmap(), and other functions). - */ - if (api != API_OPENGL_CORE && api != API_OPENGLES2) { - _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); - - intelInitExtensions(ctx); - - brw_process_intel_debug_variable(brw); - - intel_batchbuffer_init(brw); - - intel_fbo_init(brw); - - return true; -} - -void -intelDestroyContext(__DRIcontext * driContextPriv) -{ - struct brw_context *brw = - (struct brw_context *) driContextPriv->driverPrivate; - struct gl_context *ctx = &brw->ctx; - - assert(brw); /* should never be null */ - if (brw) { - /* Dump a final BMP in case the application doesn't call SwapBuffers */ - if (INTEL_DEBUG & DEBUG_AUB) { - intel_batchbuffer_flush(brw); - aub_dump_bmp(&brw->ctx); - } - - _mesa_meta_free(&brw->ctx); - - brw->vtbl.destroy(brw); - - if (ctx->swrast_context) { - _swsetup_DestroyContext(&brw->ctx); - _tnl_DestroyContext(&brw->ctx); - } - _vbo_DestroyContext(&brw->ctx); - - if (ctx->swrast_context) - _swrast_DestroyContext(&brw->ctx); - - intel_batchbuffer_free(brw); - - drm_intel_bo_unreference(brw->first_post_swapbuffers_batch); - brw->first_post_swapbuffers_batch = NULL; - - driDestroyOptionCache(&brw->optionCache); - - /* free the Mesa context */ - _mesa_free_context_data(&brw->ctx); - - ralloc_free(brw); - driContextPriv->driverPrivate = NULL; - } -} - -GLboolean -intelUnbindContext(__DRIcontext * driContextPriv) -{ - /* Unset current context and dispath table */ - _mesa_make_current(NULL, NULL, NULL); - - return true; -} - -/** - * Fixes up the context for GLES23 with our default-to-sRGB-capable behavior - * on window system framebuffers. - * - * Desktop GL is fairly reasonable in its handling of sRGB: You can ask if - * your renderbuffer can do sRGB encode, and you can flip a switch that does - * sRGB encode if the renderbuffer can handle it. You can ask specifically - * for a visual where you're guaranteed to be capable, but it turns out that - * everyone just makes all their ARGB8888 visuals capable and doesn't offer - * incapable ones, becuase there's no difference between the two in resources - * used. Applications thus get built that accidentally rely on the default - * visual choice being sRGB, so we make ours sRGB capable. Everything sounds - * great... - * - * But for GLES2/3, they decided that it was silly to not turn on sRGB encode - * for sRGB renderbuffers you made with the GL_EXT_texture_sRGB equivalent. - * So they removed the enable knob and made it "if the renderbuffer is sRGB - * capable, do sRGB encode". Then, for your window system renderbuffers, you - * can ask for sRGB visuals and get sRGB encode, or not ask for sRGB visuals - * and get no sRGB encode (assuming that both kinds of visual are available). - * Thus our choice to support sRGB by default on our visuals for desktop would - * result in broken rendering of GLES apps that aren't expecting sRGB encode. - * - * Unfortunately, renderbuffer setup happens before a context is created. So - * in intel_screen.c we always set up sRGB, and here, if you're a GLES2/3 - * context (without an sRGB visual, though we don't have sRGB visuals exposed - * yet), we go turn that back off before anyone finds out. - */ -static void -intel_gles3_srgb_workaround(struct brw_context *brw, - struct gl_framebuffer *fb) -{ - struct gl_context *ctx = &brw->ctx; - - if (_mesa_is_desktop_gl(ctx) || !fb->Visual.sRGBCapable) - return; - - /* Some day when we support the sRGB capable bit on visuals available for - * GLES, we'll need to respect that and not disable things here. - */ - fb->Visual.sRGBCapable = false; - for (int i = 0; i < BUFFER_COUNT; i++) { - if (fb->Attachment[i].Renderbuffer && - fb->Attachment[i].Renderbuffer->Format == MESA_FORMAT_SARGB8) { - fb->Attachment[i].Renderbuffer->Format = MESA_FORMAT_ARGB8888; - } - } -} - -GLboolean -intelMakeCurrent(__DRIcontext * driContextPriv, - __DRIdrawable * driDrawPriv, - __DRIdrawable * driReadPriv) -{ - struct brw_context *brw; - GET_CURRENT_CONTEXT(curCtx); - - if (driContextPriv) - brw = (struct brw_context *) driContextPriv->driverPrivate; - else - brw = 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 (brw_context(curCtx) && brw_context(curCtx) != brw) { - _mesa_flush(curCtx); - } - - if (driContextPriv) { - struct gl_context *ctx = &brw->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; - } - - /* The sRGB workaround changes the renderbuffer's format. We must change - * the format before the renderbuffer's miptree get's allocated, otherwise - * the formats of the renderbuffer and its miptree will differ. - */ - intel_gles3_srgb_workaround(brw, fb); - intel_gles3_srgb_workaround(brw, readFb); - - intel_prepare_render(brw); - _mesa_make_current(ctx, fb, readFb); - } - 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 brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer **buffers, - int *buffer_count) -{ - __DRIscreen *screen = brw->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 ((brw->is_front_buffer_rendering || - brw->is_front_buffer_reading || - !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_batchbuffer_flush(brw); - intel_flush_front(&brw->ctx); - - attachments[i++] = __DRI_BUFFER_FRONT_LEFT; - attachments[i++] = intel_bits_per_pixel(front_rb); - } else if (front_rb && brw->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_batchbuffer_flush(brw); - intel_flush_front(&brw->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 brw_context *brw, - __DRIdrawable *drawable, - __DRIbuffer *buffer, - struct intel_renderbuffer *rb, - const char *buffer_name) -{ - struct intel_region *region = NULL; - - if (!rb) - return; - - unsigned num_samples = rb->Base.Base.NumSamples; - - /* 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 (num_samples == 0) { - if (rb->mt && - rb->mt->region && - rb->mt->region->name == buffer->name) - return; - } else { - if (rb->mt && - rb->mt->singlesample_mt && - rb->mt->singlesample_mt->region && - rb->mt->singlesample_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(brw->intelScreen, - buffer->cpp, - drawable->w, - drawable->h, - buffer->pitch, - buffer->name, - buffer_name); - if (!region) - return; - - rb->mt = intel_miptree_create_for_dri2_buffer(brw, - buffer->attachment, - intel_rb_format(rb), - num_samples, - region); - intel_region_release(®ion); -} |