intel_context.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/**************************************************************************
 * 
 * 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 "glheader.h"
#include "context.h"
#include "matrix.h"
#include "simple_list.h"
#include "extensions.h"
#include "framebuffer.h"
#include "imports.h"
#include "points.h"

#include "swrast/swrast.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"

#include "tnl/t_pipeline.h"
#include "tnl/t_vertex.h"

#include "drivers/common/driverfuncs.h"

#include "intel_screen.h"

#include "i830_dri.h"

#include "intel_chipset.h"
#include "intel_buffers.h"
#include "intel_tex.h"
#include "intel_ioctl.h"
#include "intel_batchbuffer.h"
#include "intel_blit.h"
#include "intel_pixel.h"
#include "intel_regions.h"
#include "intel_buffer_objects.h"
#include "intel_fbo.h"
#include "intel_decode.h"
#include "intel_bufmgr_ttm.h"

#include "drirenderbuffer.h"
#include "vblank.h"
#include "utils.h"
#include "xmlpool.h"            /* for symbolic values of enum-type options */
#ifndef INTEL_DEBUG
int INTEL_DEBUG = (0);
#endif

#define need_GL_NV_point_sprite
#define need_GL_ARB_multisample
#define need_GL_ARB_point_parameters
#define need_GL_ARB_texture_compression
#define need_GL_ARB_vertex_buffer_object
#define need_GL_ARB_vertex_program
#define need_GL_ARB_window_pos
#define need_GL_ARB_occlusion_query
#define need_GL_EXT_blend_color
#define need_GL_EXT_blend_equation_separate
#define need_GL_EXT_blend_func_separate
#define need_GL_EXT_blend_minmax
#define need_GL_EXT_cull_vertex
#define need_GL_EXT_fog_coord
#define need_GL_EXT_framebuffer_object
#define need_GL_EXT_multi_draw_arrays
#define need_GL_EXT_secondary_color
#define need_GL_NV_vertex_program
#define need_GL_ATI_separate_stencil
#define need_GL_EXT_point_parameters
#define need_GL_VERSION_2_0
#define need_GL_VERSION_2_1
#define need_GL_ARB_shader_objects
#define need_GL_ARB_vertex_shader

#include "extension_helper.h"

#define DRIVER_DATE                     "20061102"

static const GLubyte *
intelGetString(GLcontext * ctx, GLenum name)
{
   const char *chipset;
   static char buffer[128];

   switch (name) {
   case GL_VENDOR:
      return (GLubyte *) "Tungsten Graphics, Inc";
      break;

   case GL_RENDERER:
      switch (intel_context(ctx)->intelScreen->deviceID) {
      case PCI_CHIP_845_G:
         chipset = "Intel(R) 845G";
         break;
      case PCI_CHIP_I830_M:
         chipset = "Intel(R) 830M";
         break;
      case PCI_CHIP_I855_GM:
         chipset = "Intel(R) 852GM/855GM";
         break;
      case PCI_CHIP_I865_G:
         chipset = "Intel(R) 865G";
         break;
      case PCI_CHIP_I915_G:
         chipset = "Intel(R) 915G";
         break;
      case PCI_CHIP_E7221_G:
	 chipset = "Intel (R) E7221G (i915)";
	 break;
      case PCI_CHIP_I915_GM:
         chipset = "Intel(R) 915GM";
         break;
      case PCI_CHIP_I945_G:
         chipset = "Intel(R) 945G";
         break;
      case PCI_CHIP_I945_GM:
         chipset = "Intel(R) 945GM";
         break;
      case PCI_CHIP_I945_GME:
         chipset = "Intel(R) 945GME";
         break;
      case PCI_CHIP_G33_G:
	 chipset = "Intel(R) G33";
	 break;
      case PCI_CHIP_Q35_G:
	 chipset = "Intel(R) Q35";
	 break;
      case PCI_CHIP_Q33_G:
	 chipset = "Intel(R) Q33";
	 break;
      case PCI_CHIP_I965_Q:
	 chipset = "Intel(R) 965Q";
	 break;
      case PCI_CHIP_I965_G:
      case PCI_CHIP_I965_G_1:
	 chipset = "Intel(R) 965G";
	 break;
      case PCI_CHIP_I946_GZ:
	 chipset = "Intel(R) 946GZ";
	 break;
      case PCI_CHIP_I965_GM:
	 chipset = "Intel(R) 965GM";
	 break;
      case PCI_CHIP_I965_GME:
	 chipset = "Intel(R) 965GME/GLE";
	 break;
      case PCI_CHIP_GM45_GM:
	 chipset = "Mobile Intel® GM45 Express Chipset";
	 break; 
      case PCI_CHIP_IGD_E_G:
	 chipset = "Intel(R) Integrated Graphics Device";
	 break;
      case PCI_CHIP_G45_G:
         chipset = "Intel(R) G45/G43";
         break;
      case PCI_CHIP_Q45_G:
         chipset = "Intel(R) Q45/Q43";
         break;
      case PCI_CHIP_G41_G:
         chipset = "Intel(R) G41";
         break;
      default:
         chipset = "Unknown Intel Chipset";
         break;
      }

      (void) driGetRendererString(buffer, chipset, DRIVER_DATE, 0);
      return (GLubyte *) buffer;

   default:
      return NULL;
   }
}

/**
 * Extension strings exported by the intel driver.
 *
 * Extensions supported by all chips supported by i830_dri, i915_dri, or
 * i965_dri.
 */
static const struct dri_extension card_extensions[] = {
   {"GL_ARB_multisample", GL_ARB_multisample_functions},
   {"GL_ARB_multitexture", NULL},
   {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
   {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
   {"GL_ARB_texture_border_clamp", NULL},
   {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
   {"GL_ARB_texture_cube_map", NULL},
   {"GL_ARB_texture_env_add", NULL},
   {"GL_ARB_texture_env_combine", NULL},
   {"GL_ARB_texture_env_crossbar", NULL},
   {"GL_ARB_texture_env_dot3", NULL},
   {"GL_ARB_texture_mirrored_repeat", NULL},
   {"GL_ARB_texture_non_power_of_two",   NULL },
   {"GL_ARB_texture_rectangle", NULL},
   {"GL_NV_texture_rectangle", NULL},
   {"GL_EXT_texture_rectangle", NULL},
   {"GL_ARB_point_parameters", NULL}, 
   {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
   {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
   {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
   {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
   {"GL_EXT_blend_equation_separate",
    GL_EXT_blend_equation_separate_functions},
   {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
   {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
   {"GL_EXT_blend_logic_op", NULL},
   {"GL_EXT_blend_subtract", NULL},
   {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
   {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
   {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
   {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
#if 1                           /* XXX FBO temporary? */
   {"GL_EXT_packed_depth_stencil", NULL},
#endif
   {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
   {"GL_EXT_stencil_wrap", NULL},
   {"GL_EXT_texture_edge_clamp", NULL},
   {"GL_EXT_texture_env_combine", NULL},
   {"GL_EXT_texture_env_dot3", NULL},
   {"GL_EXT_texture_filter_anisotropic", NULL},
   {"GL_EXT_texture_lod_bias", NULL},
   {"GL_3DFX_texture_compression_FXT1", NULL},
   {"GL_APPLE_client_storage", NULL},
   {"GL_MESA_pack_invert", NULL},
   {"GL_MESA_ycbcr_texture", NULL},
   {"GL_NV_blend_square", NULL},
   {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
   {"GL_NV_vertex_program1_1", NULL},
   { "GL_SGIS_generate_mipmap", NULL },
   {NULL, NULL}
};

static const struct dri_extension brw_extensions[] = {
   { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
   { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
   { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
   { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
   { "GL_ARB_point_sprite", 		  NULL},
   { "GL_ARB_fragment_shader",            NULL },
   { "GL_ARB_draw_buffers",               NULL },
   { "GL_ARB_depth_texture",              NULL },
   { "GL_ARB_fragment_program",           NULL },
   { "GL_ARB_shadow",                     NULL },
   { "GL_EXT_shadow_funcs",               NULL },
   { "GL_ARB_fragment_program_shadow",    NULL },
   /* ARB extn won't work if not enabled */
   { "GL_SGIX_depth_texture",             NULL },
   { "GL_EXT_texture_sRGB",		  NULL},
   { NULL,                                NULL }
};

static const struct dri_extension arb_oc_extensions[] = {
   {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
   {NULL, NULL}
};

static const struct dri_extension ttm_extensions[] = {
   {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
   {"GL_ARB_pixel_buffer_object", NULL},
   {NULL, NULL}
};

/**
 * Initializes potential list of extensions if ctx == NULL, or actually enables
 * extensions for a context.
 */
void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
{
   struct intel_context *intel = ctx?intel_context(ctx):NULL;

   /* Disable imaging extension until convolution is working in teximage paths.
    */
   enable_imaging = GL_FALSE;

   driInitExtensions(ctx, card_extensions, enable_imaging);

   if (intel == NULL || intel->ttm)
      driInitExtensions(ctx, ttm_extensions, GL_FALSE);

   if (intel == NULL || 
       (IS_965(intel->intelScreen->deviceID) && 
	intel->intelScreen->drmMinor >= 8))
      driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);

   if (intel == NULL || IS_965(intel->intelScreen->deviceID))
      driInitExtensions(ctx, brw_extensions, GL_FALSE);
}

static const struct dri_debug_control debug_control[] = {
   { "tex",   DEBUG_TEXTURE},
   { "state", DEBUG_STATE},
   { "ioctl", DEBUG_IOCTL},
   { "blit",  DEBUG_BLIT},
   { "mip",   DEBUG_MIPTREE},
   { "fall",  DEBUG_FALLBACKS},
   { "verb",  DEBUG_VERBOSE},
   { "bat",   DEBUG_BATCH},
   { "pix",   DEBUG_PIXEL},
   { "buf",   DEBUG_BUFMGR},
   { "reg",   DEBUG_REGION},
   { "fbo",   DEBUG_FBO},
   { "lock",  DEBUG_LOCK},
   { "sync",  DEBUG_SYNC},
   { "prim",  DEBUG_PRIMS },
   { "vert",  DEBUG_VERTS },
   { "dri",   DEBUG_DRI },
   { "dma",   DEBUG_DMA },
   { "san",   DEBUG_SANITY },
   { "sleep", DEBUG_SLEEP },
   { "stats", DEBUG_STATS },
   { "tile",  DEBUG_TILE },
   { "sing",  DEBUG_SINGLE_THREAD },
   { "thre",  DEBUG_SINGLE_THREAD },
   { "wm",    DEBUG_WM },
   { "urb",   DEBUG_URB },
   { "vs",    DEBUG_VS },
   { NULL,    0 }
};


static void
intelInvalidateState(GLcontext * ctx, GLuint new_state)
{
    struct intel_context *intel = intel_context(ctx);

   _swrast_InvalidateState(ctx, new_state);
   _swsetup_InvalidateState(ctx, new_state);
   _vbo_InvalidateState(ctx, new_state);
   _tnl_InvalidateState(ctx, new_state);
   _tnl_invalidate_vertex_state(ctx, new_state);

   intel->NewGLState |= new_state;

   if (intel->vtbl.invalidate_state)
      intel->vtbl.invalidate_state( intel, new_state );
}


void
intelFlush(GLcontext * ctx)
{
   struct intel_context *intel = intel_context(ctx);

   if (intel->Fallback)
      _swrast_flush(ctx);

   if (!IS_965(intel->intelScreen->deviceID))
      INTEL_FIREVERTICES(intel);

   if (intel->batch->map != intel->batch->ptr)
      intel_batchbuffer_flush(intel->batch);

   /* XXX: Need to do an MI_FLUSH here.
    */
}

void
intelFinish(GLcontext * ctx)
{
   struct intel_context *intel = intel_context(ctx);
   intelFlush(ctx);
   if (intel->batch->last_fence) {
      dri_fence_wait(intel->batch->last_fence);
      dri_fence_unreference(intel->batch->last_fence);
      intel->batch->last_fence = NULL;
   }
}

static void
intelBeginQuery(GLcontext *ctx, GLenum target, 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, GLenum target, 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--;
}

/** Driver-specific fence emit implementation for the fake memory manager. */
static unsigned int
intel_fence_emit(void *private)
{
   struct intel_context *intel = (struct intel_context *)private;
   unsigned int fence;

   /* XXX: Need to emit a flush, if we haven't already (at least with the
    * current batchbuffer implementation, we have).
    */

   fence = intelEmitIrqLocked(intel);

   return fence;
}

/** Driver-specific fence wait implementation for the fake memory manager. */
static int
intel_fence_wait(void *private, unsigned int cookie)
{
   struct intel_context *intel = (struct intel_context *)private;

   intelWaitIrq(intel, cookie);

   return 0;
}

static GLboolean
intel_init_bufmgr(struct intel_context *intel)
{
   intelScreenPrivate *intelScreen = intel->intelScreen;
   GLboolean ttm_disable = getenv("INTEL_NO_TTM") != NULL;
   GLboolean ttm_supported;

   /* If we've got a new enough DDX that's initializing TTM and giving us
    * object handles for the shared buffers, use that.
    */
   intel->ttm = GL_FALSE;
   if (intel->intelScreen->driScrnPriv->dri2.enabled)
       ttm_supported = GL_TRUE;
   else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
	    intel->intelScreen->drmMinor >= 11 &&
	    intel->intelScreen->front.bo_handle != -1)
       ttm_supported = GL_TRUE;
   else
       ttm_supported = GL_FALSE;

   if (!ttm_disable && ttm_supported) {
      int bo_reuse_mode;
      intel->bufmgr = intel_bufmgr_ttm_init(intel->driFd,
					    DRM_FENCE_TYPE_EXE,
					    DRM_FENCE_TYPE_EXE |
					    DRM_I915_FENCE_TYPE_RW,
					    BATCH_SZ);
      if (intel->bufmgr != NULL)
	 intel->ttm = GL_TRUE;

      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_ttm_enable_bo_reuse(intel->bufmgr);
	 break;
      }
   }
   /* Otherwise, use the classic buffer manager. */
   if (intel->bufmgr == NULL) {
      if (ttm_disable) {
	 fprintf(stderr, "TTM buffer manager disabled.  Using classic.\n");
      } else {
	 fprintf(stderr, "Failed to initialize TTM buffer manager.  "
		 "Falling back to classic.\n");
      }

      if (intelScreen->tex.size == 0) {
	 fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
		 __func__, __LINE__);
	 return GL_FALSE;
      }

      intel->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
					   intelScreen->tex.map,
					   intelScreen->tex.size,
					   intel_fence_emit,
					   intel_fence_wait,
					   intel);
   }

   return GL_TRUE;
}