brw_draw_upload.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 <stdlib.h>

#include "glheader.h"
#include "context.h"
#include "state.h"
#include "api_validate.h"
#include "enums.h"

#include "brw_draw.h"
#include "brw_defines.h"
#include "brw_context.h"
#include "brw_state.h"
#include "brw_fallback.h"

#include "intel_ioctl.h"
#include "intel_batchbuffer.h"
#include "intel_buffer_objects.h"
#include "intel_tex.h"

static GLuint double_types[5] = {
   0,
   BRW_SURFACEFORMAT_R64_FLOAT,
   BRW_SURFACEFORMAT_R64G64_FLOAT,
   BRW_SURFACEFORMAT_R64G64B64_FLOAT,
   BRW_SURFACEFORMAT_R64G64B64A64_FLOAT
};

static GLuint float_types[5] = {
   0,
   BRW_SURFACEFORMAT_R32_FLOAT,
   BRW_SURFACEFORMAT_R32G32_FLOAT,
   BRW_SURFACEFORMAT_R32G32B32_FLOAT,
   BRW_SURFACEFORMAT_R32G32B32A32_FLOAT
};

static GLuint uint_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R32_UNORM,
   BRW_SURFACEFORMAT_R32G32_UNORM,
   BRW_SURFACEFORMAT_R32G32B32_UNORM,
   BRW_SURFACEFORMAT_R32G32B32A32_UNORM
};

static GLuint uint_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R32_USCALED,
   BRW_SURFACEFORMAT_R32G32_USCALED,
   BRW_SURFACEFORMAT_R32G32B32_USCALED,
   BRW_SURFACEFORMAT_R32G32B32A32_USCALED
};

static GLuint int_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R32_SNORM,
   BRW_SURFACEFORMAT_R32G32_SNORM,
   BRW_SURFACEFORMAT_R32G32B32_SNORM,
   BRW_SURFACEFORMAT_R32G32B32A32_SNORM
};

static GLuint int_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R32_SSCALED,
   BRW_SURFACEFORMAT_R32G32_SSCALED,
   BRW_SURFACEFORMAT_R32G32B32_SSCALED,
   BRW_SURFACEFORMAT_R32G32B32A32_SSCALED
};

static GLuint ushort_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R16_UNORM,
   BRW_SURFACEFORMAT_R16G16_UNORM,
   BRW_SURFACEFORMAT_R16G16B16_UNORM,
   BRW_SURFACEFORMAT_R16G16B16A16_UNORM
};

static GLuint ushort_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R16_USCALED,
   BRW_SURFACEFORMAT_R16G16_USCALED,
   BRW_SURFACEFORMAT_R16G16B16_USCALED,
   BRW_SURFACEFORMAT_R16G16B16A16_USCALED
};

static GLuint short_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R16_SNORM,
   BRW_SURFACEFORMAT_R16G16_SNORM,
   BRW_SURFACEFORMAT_R16G16B16_SNORM,
   BRW_SURFACEFORMAT_R16G16B16A16_SNORM
};

static GLuint short_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R16_SSCALED,
   BRW_SURFACEFORMAT_R16G16_SSCALED,
   BRW_SURFACEFORMAT_R16G16B16_SSCALED,
   BRW_SURFACEFORMAT_R16G16B16A16_SSCALED
};

static GLuint ubyte_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R8_UNORM,
   BRW_SURFACEFORMAT_R8G8_UNORM,
   BRW_SURFACEFORMAT_R8G8B8_UNORM,
   BRW_SURFACEFORMAT_R8G8B8A8_UNORM
};

static GLuint ubyte_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R8_USCALED,
   BRW_SURFACEFORMAT_R8G8_USCALED,
   BRW_SURFACEFORMAT_R8G8B8_USCALED,
   BRW_SURFACEFORMAT_R8G8B8A8_USCALED
};

static GLuint byte_types_norm[5] = {
   0,
   BRW_SURFACEFORMAT_R8_SNORM,
   BRW_SURFACEFORMAT_R8G8_SNORM,
   BRW_SURFACEFORMAT_R8G8B8_SNORM,
   BRW_SURFACEFORMAT_R8G8B8A8_SNORM
};

static GLuint byte_types_scale[5] = {
   0,
   BRW_SURFACEFORMAT_R8_SSCALED,
   BRW_SURFACEFORMAT_R8G8_SSCALED,
   BRW_SURFACEFORMAT_R8G8B8_SSCALED,
   BRW_SURFACEFORMAT_R8G8B8A8_SSCALED
};


static GLuint get_surface_type( GLenum type, GLuint size, GLboolean normalized )
{
   if (INTEL_DEBUG & DEBUG_VERTS)
      _mesa_printf("type %s size %d normalized %d\n", 
		   _mesa_lookup_enum_by_nr(type), size, normalized);

   if (normalized) {
      switch (type) {
      case GL_DOUBLE: return double_types[size];
      case GL_FLOAT: return float_types[size];
      case GL_INT: return int_types_norm[size];
      case GL_SHORT: return short_types_norm[size];
      case GL_BYTE: return byte_types_norm[size];
      case GL_UNSIGNED_INT: return uint_types_norm[size];
      case GL_UNSIGNED_SHORT: return ushort_types_norm[size];
      case GL_UNSIGNED_BYTE: return ubyte_types_norm[size];
      default: assert(0); return 0;
      }      
   }
   else {
      switch (type) {
      case GL_DOUBLE: return double_types[size];
      case GL_FLOAT: return float_types[size];
      case GL_INT: return int_types_scale[size];
      case GL_SHORT: return short_types_scale[size];
      case GL_BYTE: return byte_types_scale[size];
      case GL_UNSIGNED_INT: return uint_types_scale[size];
      case GL_UNSIGNED_SHORT: return ushort_types_scale[size];
      case GL_UNSIGNED_BYTE: return ubyte_types_scale[size];
      default: assert(0); return 0;
      }      
   }
}


static GLuint get_size( GLenum type )
{
   switch (type) {
   case GL_DOUBLE: return sizeof(GLdouble);
   case GL_FLOAT: return sizeof(GLfloat);
   case GL_INT: return sizeof(GLint);
   case GL_SHORT: return sizeof(GLshort);
   case GL_BYTE: return sizeof(GLbyte);
   case GL_UNSIGNED_INT: return sizeof(GLuint);
   case GL_UNSIGNED_SHORT: return sizeof(GLushort);
   case GL_UNSIGNED_BYTE: return sizeof(GLubyte);
   default: return 0;
   }      
}

static GLuint get_index_type(GLenum type) 
{
   switch (type) {
   case GL_UNSIGNED_BYTE:  return BRW_INDEX_BYTE;
   case GL_UNSIGNED_SHORT: return BRW_INDEX_WORD;
   case GL_UNSIGNED_INT:   return BRW_INDEX_DWORD;
   default: assert(0); return 0;
   }
}

static void wrap_buffers( struct brw_context *brw,
			  GLuint size )
{
   if (size < BRW_UPLOAD_INIT_SIZE)
      size = BRW_UPLOAD_INIT_SIZE;

   brw->vb.upload.offset = 0;

   if (brw->vb.upload.bo != NULL)
      dri_bo_unreference(brw->vb.upload.bo);
   brw->vb.upload.bo = dri_bo_alloc(brw->intel.bufmgr, "temporary VBO",
				    size, 1,
				    DRM_BO_FLAG_MEM_LOCAL |
				    DRM_BO_FLAG_CACHED |
				    DRM_BO_FLAG_CACHED_MAPPED);

   /* Set the internal VBO\ to no-backing-store.  We only use them as a
    * temporary within a brw_try_draw_prims while the lock is held.
    */
   /* DON'T DO THIS AS IF WE HAVE TO RE-ORG MEMORY WE NEED SOMEWHERE WITH
      FAKE TO PUSH THIS STUFF */
//   if (!brw->intel.ttm)
//      dri_bo_fake_disable_backing_store(brw->vb.upload.bo, NULL, NULL);
}

static void get_space( struct brw_context *brw,
		       GLuint size,
		       dri_bo **bo_return,
		       GLuint *offset_return )
{
   size = ALIGN(size, 64);

   if (brw->vb.upload.bo == NULL ||
       brw->vb.upload.offset + size > brw->vb.upload.bo->size) {
      wrap_buffers(brw, size);
   }

   dri_bo_reference(brw->vb.upload.bo);
   *bo_return = brw->vb.upload.bo;
   *offset_return = brw->vb.upload.offset;

   brw->vb.upload.offset += size;
}

static void
copy_array_to_vbo_array( struct brw_context *brw,
			 struct brw_vertex_element *element,
			 GLuint dst_stride)
{
   GLuint size = element->count * dst_stride;

   get_space(brw, size, &element->bo, &element->offset);

   if (element->glarray->StrideB == 0) {
      assert(element->count == 1);
      element->stride = 0;
   } else {
      element->stride = dst_stride;
   }

   if (dst_stride == element->glarray->StrideB) {
      dri_bo_subdata(element->bo,
		     element->offset,
		     size,
		     element->glarray->Ptr);
   } else {
      void *data;
      char *dest;
      const char *src = element->glarray->Ptr;
      int i;

      data = _mesa_malloc(dst_stride * element->count);
      dest = data;
      for (i = 0; i < element->count; i++) {
	 memcpy(dest, src, dst_stride);
	 src += element->glarray->StrideB;
	 dest += dst_stride;
      }

      dri_bo_subdata(element->bo,
		     element->offset,
		     size,
		     data);