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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*
 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
 *
 * 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, sublicense,
 * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS 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.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#ifndef FD3_CONTEXT_H_
#define FD3_CONTEXT_H_

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#include "util/u_upload_mgr.h"

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#include "freedreno_drmif.h"

#include "freedreno_context.h"

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#include "ir3_shader.h"


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struct fd3_context {
	struct fd_context base;

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	/* Keep track of writes to RB_RENDER_CONTROL which need to be patched
	 * once we know whether or not to use GMEM, and GMEM tile pitch.
	 */
	struct util_dynarray rbrc_patches;

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	struct fd_bo *vs_pvt_mem, *fs_pvt_mem;

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	/* This only needs to be 4 * num_of_pipes bytes (ie. 32 bytes).  We
	 * could combine it with another allocation.
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	 */
	struct fd_bo *vsc_size_mem;

	/* vertex buf used for clear/gmem->mem vertices, and mem->gmem
	 * vertices:
	 */
	struct pipe_resource *solid_vbuf;

	/* vertex buf used for mem->gmem tex coords:
	 */
	struct pipe_resource *blit_texcoord_vbuf;
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	/* vertex state for solid_vbuf:
	 *    - solid_vbuf / 12 / R32G32B32_FLOAT
	 */
	struct fd_vertex_state solid_vbuf_state;

	/* vertex state for blit_prog:
	 *    - blit_texcoord_vbuf / 8 / R32G32_FLOAT
	 *    - solid_vbuf / 12 / R32G32B32_FLOAT
	 */
	struct fd_vertex_state blit_vbuf_state;


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	/*
	 * Border color layout *appears* to be as arrays of 0x40 byte
	 * elements, with frag shader elements starting at (16 x 0x40).
	 * But at some point I should probably experiment more with
	 * samplers in vertex shaders to be sure.  Unclear about why
	 * there is this offset when there are separate VS and FS base
	 * addr regs.
	 *
	 * The first 8 bytes of each entry are the requested border
	 * color in fp16.  Unclear about the rest.. could be used for
	 * other formats, or could simply be for aligning the pitch
	 * to 32 pixels.
	 */
#define BORDERCOLOR_SIZE 0x40

	struct u_upload_mgr *border_color_uploader;
	struct pipe_resource *border_color_buf;
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	/* if *any* of bits are set in {v,f}saturate_{s,t,r} */
	bool vsaturate, fsaturate;

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	/* bitmask of sampler which needs coords clamped for vertex
	 * shader:
	 */
	unsigned vsaturate_s, vsaturate_t, vsaturate_r;

	/* bitmask of sampler which needs coords clamped for frag
	 * shader:
	 */
	unsigned fsaturate_s, fsaturate_t, fsaturate_r;
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	/* some state changes require a different shader variant.  Keep
	 * track of this so we know when we need to re-emit shader state
	 * due to variant change.  See fixup_shader_state()
	 */
	struct ir3_shader_key last_key;
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};

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static inline struct fd3_context *
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fd3_context(struct fd_context *ctx)
{
	return (struct fd3_context *)ctx;
}

struct pipe_context *
fd3_context_create(struct pipe_screen *pscreen, void *priv);

#endif /* FD3_CONTEXT_H_ */