Import a classic DRI driver for nv0x-nv2x.

1 files changed, 123 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nv20_state_fb.c b/src/mesa/drivers/dri/nouveau/nv20_state_fb.c
new file mode 100644
index 0000000000..869acd6e31
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nv20_state_fb.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2009 Francisco Jerez.
+ * 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, 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 COPYRIGHT OWNER(S) 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 "nouveau_driver.h"
+#include "nouveau_context.h"
+#include "nouveau_fbo.h"
+#include "nouveau_gldefs.h"
+#include "nouveau_util.h"
+#include "nouveau_class.h"
+#include "nv20_driver.h"
+
+static inline unsigned
+get_rt_format(gl_format format)
+{
+	switch (format) {
+	case MESA_FORMAT_XRGB8888:
+		return 0x05;
+	case MESA_FORMAT_ARGB8888:
+		return 0x08;
+	case MESA_FORMAT_RGB565:
+		return 0x03;
+	case MESA_FORMAT_Z16:
+		return 0x10;
+	case MESA_FORMAT_Z24_S8:
+		return 0x20;
+	default:
+		assert(0);
+	}
+}
+
+void
+nv20_emit_framebuffer(GLcontext *ctx, int emit)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *kelvin = context_eng3d(ctx);
+	struct nouveau_bo_context *bctx = context_bctx(ctx, FRAMEBUFFER);
+	struct gl_framebuffer *fb = ctx->DrawBuffer;
+	struct nouveau_surface *s;
+	unsigned rt_format = NV20TCL_RT_FORMAT_TYPE_LINEAR;
+	unsigned rt_pitch = 0, zeta_pitch = 0;
+	unsigned bo_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR;
+
+	if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT)
+		return;
+
+	/* Render target */
+	if (fb->_NumColorDrawBuffers) {
+		s = &to_nouveau_renderbuffer(
+			fb->_ColorDrawBuffers[0])->surface;
+
+		rt_format |= get_rt_format(s->format);
+		zeta_pitch = rt_pitch = s->pitch;
+
+		nouveau_bo_markl(bctx, kelvin, NV20TCL_COLOR_OFFSET,
+				 s->bo, 0, bo_flags);
+	}
+
+	/* depth/stencil */
+	if (fb->_DepthBuffer) {
+		s = &to_nouveau_renderbuffer(
+			fb->_DepthBuffer->Wrapped)->surface;
+
+		rt_format |= get_rt_format(s->format);
+		zeta_pitch = s->pitch;
+
+		nouveau_bo_markl(bctx, kelvin, NV20TCL_ZETA_OFFSET,
+				 s->bo, 0, bo_flags);
+	}
+
+	BEGIN_RING(chan, kelvin, NV20TCL_RT_FORMAT, 2);
+	OUT_RING(chan, rt_format);
+	OUT_RING(chan, zeta_pitch << 16 | rt_pitch);
+
+	/* Recompute the viewport/scissor state. */
+	context_dirty(ctx, VIEWPORT);
+	context_dirty(ctx, SCISSOR);
+}
+
+void
+nv20_emit_viewport(GLcontext *ctx, int emit)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *kelvin = context_eng3d(ctx);
+	struct gl_framebuffer *fb = ctx->DrawBuffer;
+	float a[4] = {};
+	int i;
+
+	get_viewport_translate(ctx, a);
+
+	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_TRANSLATE_X, 4);
+	for (i = 0; i < 4; i++)
+		OUT_RINGf(chan, a[i]);
+
+	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_HORIZ(0), 1);
+	OUT_RING(chan, (fb->Width - 1) << 16);
+	BEGIN_RING(chan, kelvin, NV20TCL_VIEWPORT_CLIP_VERT(0), 1);
+	OUT_RING(chan, (fb->Height - 1) << 16);
+
+	context_dirty(ctx, PROJECTION);
+}