r300_texstate.c

mesa-6.5-minigui源码

	    t->image[0][i].y = curOffset / BLIT_WIDTH_BYTES;
	    t->image[0][i].width = MIN2(size, BLIT_WIDTH_BYTES);
	    t->image[0][i].height = size / t->image[0][i].width;
	  }
#if 0
	  /* for debugging only and only  applicable to non-rectangle targets */
	  assert(size % t->image[0][i].width == 0);
	  assert(t->image[0][i].x == 0
		 || (size < BLIT_WIDTH_BYTES
		     && t->image[0][i].height == 1));
#endif
	  
	  if (0)
	    fprintf(stderr,
		    "level %d: %dx%d x=%d y=%d w=%d h=%d size=%d at %d\n",
		    i, texImage->Width, texImage->Height,
		    t->image[0][i].x, t->image[0][i].y,
		    t->image[0][i].width, t->image[0][i].height,
		    size, curOffset);
	  
	  curOffset += size;
	  
	}
	
	/* Align the total size of texture memory block.
	 */
	t->base.totalSize =
	    (curOffset + RADEON_OFFSET_MASK) & ~RADEON_OFFSET_MASK;

	/* Setup remaining cube face blits, if needed */
	if (tObj->Target == GL_TEXTURE_CUBE_MAP) {
		GLuint face;
		for (face = 1; face < 6; face++) {
			for (i = 0; i < numLevels; i++) {
				t->image[face][i].x = t->image[0][i].x;
				t->image[face][i].y = t->image[0][i].y;
				t->image[face][i].width = t->image[0][i].width;
				t->image[face][i].height =
				    t->image[0][i].height;
			}
		}
		t->base.totalSize *= 6;	/* total texmem needed */
	}

	/* Hardware state:
	 */
#if 0
	t->format &= ~(R200_TXFORMAT_WIDTH_MASK |
			    R200_TXFORMAT_HEIGHT_MASK |
			    R200_TXFORMAT_CUBIC_MAP_ENABLE |
			    R200_TXFORMAT_F5_WIDTH_MASK |
			    R200_TXFORMAT_F5_HEIGHT_MASK);
	t->format |= ((log2Width << R200_TXFORMAT_WIDTH_SHIFT) |
			   (log2Height << R200_TXFORMAT_HEIGHT_SHIFT));
#endif

	t->format_x &= ~(R200_DEPTH_LOG2_MASK | R200_TEXCOORD_MASK);
	if (tObj->Target == GL_TEXTURE_3D) {
		t->format_x |= (log2Depth << R200_DEPTH_LOG2_SHIFT);
		t->format_x |= R200_TEXCOORD_VOLUME;
	} else if (tObj->Target == GL_TEXTURE_CUBE_MAP) {
		ASSERT(log2Width == log2Height);
		t->format |= R300_TX_FORMAT_CUBIC_MAP;
		
		t->format_x |= R200_TEXCOORD_CUBIC_ENV;
		t->pp_cubic_faces = ((log2Width << R200_FACE_WIDTH_1_SHIFT) |
				     (log2Height << R200_FACE_HEIGHT_1_SHIFT) |
				     (log2Width << R200_FACE_WIDTH_2_SHIFT) |
				     (log2Height << R200_FACE_HEIGHT_2_SHIFT) |
				     (log2Width << R200_FACE_WIDTH_3_SHIFT) |
				     (log2Height << R200_FACE_HEIGHT_3_SHIFT) |
				     (log2Width << R200_FACE_WIDTH_4_SHIFT) |
				     (log2Height << R200_FACE_HEIGHT_4_SHIFT));
	}
	
	t->size = (((tObj->Image[0][t->base.firstLevel]->Width - 1) << R300_TX_WIDTHMASK_SHIFT)
			|((tObj->Image[0][t->base.firstLevel]->Height - 1) << R300_TX_HEIGHTMASK_SHIFT))
			|((numLevels - 1) << R300_TX_MAX_MIP_LEVEL_SHIFT);

	/* Only need to round to nearest 32 for textures, but the blitter
	 * requires 64-byte aligned pitches, and we may/may not need the
	 * blitter.   NPOT only!
	 */
	if (baseImage->IsCompressed) {
		t->pitch =
		    (tObj->Image[0][t->base.firstLevel]->Width + 63) & ~(63);
	}
	else if (tObj->Target == GL_TEXTURE_RECTANGLE_NV) {
		unsigned int align = blitWidth - 1;
		t->pitch = ((tObj->Image[0][t->base.firstLevel]->Width *
		      texelBytes) + 63) & ~(63);
		t->size |= R300_TX_SIZE_TXPITCH_EN;
		t->pitch_reg = (((tObj->Image[0][t->base.firstLevel]->Width) + align) & ~align) - 1;
	}
	else {
		t->pitch =
		    ((tObj->Image[0][t->base.firstLevel]->Width *
		      texelBytes) + 63) & ~(63);
	}

	t->dirty_state = TEX_ALL;

	/* FYI: r300UploadTexImages( rmesa, t ) used to be called here */
}


/* ================================================================
 * Texture unit state management
 */

static GLboolean enable_tex_2d(GLcontext * ctx, int unit)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
	struct gl_texture_object *tObj = texUnit->_Current;
	r300TexObjPtr t = (r300TexObjPtr) tObj->DriverData;

	ASSERT(tObj->Target == GL_TEXTURE_2D || tObj->Target == GL_TEXTURE_1D);

	if (t->base.dirty_images[0]) {
		R300_FIREVERTICES(rmesa);
		r300SetTexImages(rmesa, tObj);
		r300UploadTexImages(rmesa, (r300TexObjPtr) tObj->DriverData, 0);
		if (!t->base.memBlock)
			return GL_FALSE;
	}

	return GL_TRUE;
}

#if ENABLE_HW_3D_TEXTURE
static GLboolean enable_tex_3d(GLcontext * ctx, int unit)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
	struct gl_texture_object *tObj = texUnit->_Current;
	r300TexObjPtr t = (r300TexObjPtr) tObj->DriverData;

	/* Need to load the 3d images associated with this unit.
	 */
	if (t->format & R200_TXFORMAT_NON_POWER2) {
		t->format &= ~R200_TXFORMAT_NON_POWER2;
		t->base.dirty_images[0] = ~0;
	}

	ASSERT(tObj->Target == GL_TEXTURE_3D);

	/* R100 & R200 do not support mipmaps for 3D textures.
	 */
	if ((tObj->MinFilter != GL_NEAREST) && (tObj->MinFilter != GL_LINEAR)) {
		return GL_FALSE;
	}

	if (t->base.dirty_images[0]) {
		R300_FIREVERTICES(rmesa);
		r300SetTexImages(rmesa, tObj);
		r300UploadTexImages(rmesa, (r300TexObjPtr) tObj->DriverData, 0);
		if (!t->base.memBlock)
			return GL_FALSE;
	}

	return GL_TRUE;
}
#endif

static GLboolean enable_tex_cube(GLcontext * ctx, int unit)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
	struct gl_texture_object *tObj = texUnit->_Current;
	r300TexObjPtr t = (r300TexObjPtr) tObj->DriverData;
	GLuint face;

	/* Need to load the 2d images associated with this unit.
	 */
	if (t->format & R200_TXFORMAT_NON_POWER2) {
		t->format &= ~R200_TXFORMAT_NON_POWER2;
		for (face = 0; face < 6; face++)
			t->base.dirty_images[face] = ~0;
	}

	ASSERT(tObj->Target == GL_TEXTURE_CUBE_MAP);

	if (t->base.dirty_images[0] || t->base.dirty_images[1] ||
	    t->base.dirty_images[2] || t->base.dirty_images[3] ||
	    t->base.dirty_images[4] || t->base.dirty_images[5]) {
		/* flush */
		R300_FIREVERTICES(rmesa);
		/* layout memory space, once for all faces */
		r300SetTexImages(rmesa, tObj);
	}

	/* upload (per face) */
	for (face = 0; face < 6; face++) {
		if (t->base.dirty_images[face]) {
			r300UploadTexImages(rmesa,
					    (r300TexObjPtr) tObj->DriverData,
					    face);
		}
	}

	if (!t->base.memBlock) {
		/* texmem alloc failed, use s/w fallback */
		return GL_FALSE;
	}

	return GL_TRUE;
}

static GLboolean enable_tex_rect(GLcontext * ctx, int unit)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
	struct gl_texture_object *tObj = texUnit->_Current;
	r300TexObjPtr t = (r300TexObjPtr) tObj->DriverData;

	ASSERT(tObj->Target == GL_TEXTURE_RECTANGLE_NV);

	if (t->base.dirty_images[0]) {
		R300_FIREVERTICES(rmesa);
		r300SetTexImages(rmesa, tObj);
		r300UploadTexImages(rmesa, (r300TexObjPtr) tObj->DriverData, 0);
		if (!t->base.memBlock && !rmesa->prefer_gart_client_texturing)
			return GL_FALSE;
	}

	return GL_TRUE;
}

static GLboolean update_tex_common(GLcontext * ctx, int unit)
{
	r300ContextPtr rmesa = R300_CONTEXT(ctx);
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
	struct gl_texture_object *tObj = texUnit->_Current;
	r300TexObjPtr t = (r300TexObjPtr) tObj->DriverData;

	/* Fallback if there's a texture border */
	if (tObj->Image[0][tObj->BaseLevel]->Border > 0)
		return GL_FALSE;

	/* Update state if this is a different texture object to last
	 * time.
	 */
	if (rmesa->state.texture.unit[unit].texobj != t) {
		if (rmesa->state.texture.unit[unit].texobj != NULL) {
			/* The old texture is no longer bound to this texture unit.
			 * Mark it as such.
			 */

			rmesa->state.texture.unit[unit].texobj->base.bound &=
			    ~(1UL << unit);
		}

		rmesa->state.texture.unit[unit].texobj = t;
		t->base.bound |= (1UL << unit);
		t->dirty_state |= 1 << unit;
		driUpdateTextureLRU((driTextureObject *) t);	/* XXX: should be locked! */
	}

#if R200_MERGED
	FALLBACK(&rmesa->radeon, RADEON_FALLBACK_BORDER_MODE, t->border_fallback);
#endif
		
	return !t->border_fallback;
}

static GLboolean r300UpdateTextureUnit(GLcontext * ctx, int unit)
{
	struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];

	if (texUnit->_ReallyEnabled & (TEXTURE_RECT_BIT)) {
		return (enable_tex_rect(ctx, unit) &&
			update_tex_common(ctx, unit));
	} else if (texUnit->_ReallyEnabled & (TEXTURE_1D_BIT | TEXTURE_2D_BIT)) {
		return (enable_tex_2d(ctx, unit) &&
			update_tex_common(ctx, unit));
	}
#if ENABLE_HW_3D_TEXTURE
	else if (texUnit->_ReallyEnabled & (TEXTURE_3D_BIT)) {
		return (enable_tex_3d(ctx, unit) &&
			update_tex_common(ctx, unit));
	}
#endif
	else if (texUnit->_ReallyEnabled & (TEXTURE_CUBE_BIT)) {
		return (enable_tex_cube(ctx, unit) &&
			update_tex_common(ctx, unit));
	} else if (texUnit->_ReallyEnabled) {
		return GL_FALSE;
	} else {
		return GL_TRUE;
 	}
}

void r300UpdateTextureState(GLcontext * ctx)
{
	GLboolean ok;

	ok = (r300UpdateTextureUnit(ctx, 0) &&
	      r300UpdateTextureUnit(ctx, 1) &&
	      r300UpdateTextureUnit(ctx, 2) &&
	      r300UpdateTextureUnit(ctx, 3) &&
	      r300UpdateTextureUnit(ctx, 4) &&
	      r300UpdateTextureUnit(ctx, 5) &&
	      r300UpdateTextureUnit(ctx, 6) &&
	      r300UpdateTextureUnit(ctx, 7)
	      );

#if R200_MERGED
	FALLBACK(&rmesa->radeon, RADEON_FALLBACK_TEXTURE, !ok);
#endif	
}