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5564 serge 1 
/*
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 * Copyright (C) 2009 Francisco Jerez.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sublicense, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial
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 * portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 */
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#include "nouveau_driver.h"
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#include "nouveau_context.h"
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#include "nouveau_fbo.h"
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#include "nouveau_gldefs.h"
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#include "nouveau_util.h"
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#include "nv20_3d.xml.h"
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#include "nv20_driver.h"
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static inline unsigned
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get_rt_format(mesa_format format)
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{
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	switch (format) {
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	case MESA_FORMAT_B8G8R8X8_UNORM:
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		return NV20_3D_RT_FORMAT_COLOR_X8R8G8B8;
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	case MESA_FORMAT_B8G8R8A8_UNORM:
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		return NV20_3D_RT_FORMAT_COLOR_A8R8G8B8;
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	case MESA_FORMAT_B5G6R5_UNORM:
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		return NV20_3D_RT_FORMAT_COLOR_R5G6B5;
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	case MESA_FORMAT_Z_UNORM16:
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		return NV20_3D_RT_FORMAT_DEPTH_Z16;
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	case MESA_FORMAT_S8_UINT_Z24_UNORM:
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		return NV20_3D_RT_FORMAT_DEPTH_Z24S8;
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	default:
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		assert(0);
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	}
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}
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static void
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setup_hierz_buffer(struct gl_context *ctx)
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{
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	struct nouveau_pushbuf *push = context_push(ctx);
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	struct gl_framebuffer *fb = ctx->DrawBuffer;
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	struct nouveau_framebuffer *nfb = to_nouveau_framebuffer(fb);
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	unsigned pitch = align(fb->Width, 128),
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		height = align(fb->Height, 2),
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		size = pitch * height;
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	if (!nfb->hierz.bo || nfb->hierz.bo->size != size) {
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		nouveau_bo_ref(NULL, &nfb->hierz.bo);
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		nouveau_bo_new(context_dev(ctx), NOUVEAU_BO_VRAM, 0, size,
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			       NULL, &nfb->hierz.bo);
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	}
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	BEGIN_NV04(push, NV25_3D(HIERZ_PITCH), 1);
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	PUSH_DATA (push, pitch);
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	BEGIN_NV04(push, NV25_3D(HIERZ_OFFSET), 1);
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	PUSH_MTHDl(push, NV25_3D(HIERZ_OFFSET), BUFCTX_FB,
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			 nfb->hierz.bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR);
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}
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void
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nv20_emit_framebuffer(struct gl_context *ctx, int emit)
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{
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	struct nouveau_pushbuf *push = context_push(ctx);
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	struct gl_framebuffer *fb = ctx->DrawBuffer;
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	struct nouveau_surface *s;
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	unsigned rt_format = NV20_3D_RT_FORMAT_TYPE_LINEAR;
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	unsigned rt_pitch = 0, zeta_pitch = 0;
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	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
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	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
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		return;
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	PUSH_RESET(push, BUFCTX_FB);
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	/* Render target */
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	if (fb->_ColorDrawBuffers[0]) {
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		s = &to_nouveau_renderbuffer(
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			fb->_ColorDrawBuffers[0])->surface;
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		rt_format |= get_rt_format(s->format);
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		rt_pitch = s->pitch;
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		BEGIN_NV04(push, NV20_3D(COLOR_OFFSET), 1);
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		PUSH_MTHDl(push, NV20_3D(COLOR_OFFSET), BUFCTX_FB,
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				 s->bo, 0, bo_flags);
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	}
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	/* depth/stencil */
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	if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
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		s = &to_nouveau_renderbuffer(
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			fb->Attachment[BUFFER_DEPTH].Renderbuffer)->surface;
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		rt_format |= get_rt_format(s->format);
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		zeta_pitch = s->pitch;
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		BEGIN_NV04(push, NV20_3D(ZETA_OFFSET), 1);
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		PUSH_MTHDl(push, NV20_3D(ZETA_OFFSET), BUFCTX_FB,
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				 s->bo, 0, bo_flags);
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		if (context_chipset(ctx) >= 0x25)
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			setup_hierz_buffer(ctx);
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	} else {
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		rt_format |= get_rt_format(MESA_FORMAT_S8_UINT_Z24_UNORM);
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		zeta_pitch = rt_pitch;
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	}
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	BEGIN_NV04(push, NV20_3D(RT_FORMAT), 2);
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	PUSH_DATA (push, rt_format);
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	PUSH_DATA (push, zeta_pitch << 16 | rt_pitch);
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	/* Recompute the viewport/scissor state. */
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	context_dirty(ctx, VIEWPORT);
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	context_dirty(ctx, SCISSOR);
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	context_dirty(ctx, DEPTH);
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}
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void
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nv20_emit_viewport(struct gl_context *ctx, int emit)
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{
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	struct nouveau_pushbuf *push = context_push(ctx);
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	struct gl_framebuffer *fb = ctx->DrawBuffer;
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	float a[4] = {};
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	get_viewport_translate(ctx, a);
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	BEGIN_NV04(push, NV20_3D(VIEWPORT_TRANSLATE_X), 4);
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	PUSH_DATAp(push, a, 4);
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	BEGIN_NV04(push, NV20_3D(VIEWPORT_CLIP_HORIZ(0)), 1);
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	PUSH_DATA (push, (fb->Width - 1) << 16);
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	BEGIN_NV04(push, NV20_3D(VIEWPORT_CLIP_VERT(0)), 1);
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	PUSH_DATA (push, (fb->Height - 1) << 16);
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	context_dirty(ctx, PROJECTION);
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}