1 files changed, 416 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nv10_state_frag.c b/src/mesa/drivers/dri/nouveau/nv10_state_frag.c
new file mode 100644
index 0000000000..c1df26ecce
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nv10_state_frag.c
@@ -0,0 +1,416 @@
+/*
+ * 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_gldefs.h"
+#include "nouveau_class.h"
+#include "nouveau_util.h"
+#include "nv10_driver.h"
+#include "nv20_driver.h"
+
+#define RC_IN_SHIFT_A	24
+#define RC_IN_SHIFT_B	16
+#define RC_IN_SHIFT_C	8
+#define RC_IN_SHIFT_D	0
+#define RC_IN_SHIFT_E	56
+#define RC_IN_SHIFT_F	48
+#define RC_IN_SHIFT_G	40
+
+#define RC_IN_SOURCE(source)				\
+	((uint64_t)NV10TCL_RC_IN_RGB_D_INPUT_##source)
+#define RC_IN_USAGE(usage)					\
+	((uint64_t)NV10TCL_RC_IN_RGB_D_COMPONENT_USAGE_##usage)
+#define RC_IN_MAPPING(mapping)					\
+	((uint64_t)NV10TCL_RC_IN_RGB_D_MAPPING_##mapping)
+
+#define RC_OUT_BIAS	NV10TCL_RC_OUT_RGB_BIAS_BIAS_BY_NEGATIVE_ONE_HALF
+#define RC_OUT_SCALE_1	NV10TCL_RC_OUT_RGB_SCALE_NONE
+#define RC_OUT_SCALE_2	NV10TCL_RC_OUT_RGB_SCALE_SCALE_BY_TWO
+#define RC_OUT_SCALE_4	NV10TCL_RC_OUT_RGB_SCALE_SCALE_BY_FOUR
+
+/* Make the combiner do: spare0_i = A_i * B_i */
+#define RC_OUT_AB	NV10TCL_RC_OUT_RGB_AB_OUTPUT_SPARE0
+/* spare0_i = dot3(A, B) */
+#define RC_OUT_DOT_AB	(NV10TCL_RC_OUT_RGB_AB_OUTPUT_SPARE0 |	\
+			 NV10TCL_RC_OUT_RGB_AB_DOT_PRODUCT)
+/* spare0_i = A_i * B_i + C_i * D_i */
+#define RC_OUT_SUM	NV10TCL_RC_OUT_RGB_SUM_OUTPUT_SPARE0
+
+struct combiner_state {
+	GLcontext *ctx;
+	int unit;
+
+	/* GL state */
+	GLenum mode;
+	GLenum *source;
+	GLenum *operand;
+	GLuint logscale;
+
+	/* Derived HW state */
+	uint64_t in;
+	uint32_t out;
+};
+
+/* Initialize a combiner_state struct from the texture unit
+ * context. */
+#define INIT_COMBINER(chan, ctx, rc, i) do {			\
+		struct gl_tex_env_combine_state *c =		\
+			ctx->Texture.Unit[i]._CurrentCombine;	\
+		(rc)->ctx = ctx;				\
+		(rc)->unit = i;					\
+		(rc)->mode = c->Mode##chan;			\
+		(rc)->source = c->Source##chan;			\
+		(rc)->operand = c->Operand##chan;		\
+		(rc)->logscale = c->ScaleShift##chan;		\
+		(rc)->in = (rc)->out = 0;			\
+	} while (0)
+
+/* Get the RC input source for the specified EXT_texture_env_combine
+ * argument. */
+static uint32_t
+get_input_source(struct combiner_state *rc, int arg)
+{
+	switch (rc->source[arg]) {
+	case GL_TEXTURE:
+		return RC_IN_SOURCE(TEXTURE0) + rc->unit;
+
+	case GL_TEXTURE0:
+		return RC_IN_SOURCE(TEXTURE0);
+
+	case GL_TEXTURE1:
+		return RC_IN_SOURCE(TEXTURE1);
+
+	case GL_TEXTURE2:
+		return RC_IN_SOURCE(TEXTURE2);
+
+	case GL_TEXTURE3:
+		return RC_IN_SOURCE(TEXTURE3);
+
+	case GL_CONSTANT:
+		return context_chipset(rc->ctx) >= 0x20 ?
+			RC_IN_SOURCE(CONSTANT_COLOR0) :
+			RC_IN_SOURCE(CONSTANT_COLOR0) + rc->unit;
+
+	case GL_PRIMARY_COLOR:
+		return RC_IN_SOURCE(PRIMARY_COLOR);
+
+	case GL_PREVIOUS:
+		return rc->unit ? RC_IN_SOURCE(SPARE0)
+			: RC_IN_SOURCE(PRIMARY_COLOR);
+
+	default:
+		assert(0);
+	}
+}
+
+/* Get the RC input mapping for the specified argument, possibly
+ * inverted or biased. */
+#define INVERT 0x1
+#define HALF_BIAS 0x2
+
+static uint32_t
+get_input_mapping(struct combiner_state *rc, int arg, int flags)
+{
+	int map = 0;
+
+	switch (rc->operand[arg]) {
+	case GL_SRC_COLOR:
+	case GL_ONE_MINUS_SRC_COLOR:
+		map |= RC_IN_USAGE(RGB);
+		break;
+
+	case GL_SRC_ALPHA:
+	case GL_ONE_MINUS_SRC_ALPHA:
+		map |= RC_IN_USAGE(ALPHA);
+		break;
+	}
+
+	switch (rc->operand[arg]) {
+	case GL_SRC_COLOR:
+	case GL_SRC_ALPHA:
+		map |= (flags & INVERT ? RC_IN_MAPPING(UNSIGNED_INVERT) :
+			flags & HALF_BIAS ? RC_IN_MAPPING(HALF_BIAS_NORMAL) :
+			RC_IN_MAPPING(UNSIGNED_IDENTITY));
+		break;
+
+	case GL_ONE_MINUS_SRC_COLOR:
+	case GL_ONE_MINUS_SRC_ALPHA:
+		map |= (flags & INVERT ? RC_IN_MAPPING(UNSIGNED_IDENTITY) :
+			flags & HALF_BIAS ? RC_IN_MAPPING(HALF_BIAS_NEGATE) :
+			RC_IN_MAPPING(UNSIGNED_INVERT));
+		break;
+	}
+
+	return map;
+}
+
+/* Bind the RC input variable <var> to the EXT_texture_env_combine
+ * argument <arg>, possibly inverted or biased. */
+#define INPUT_ARG(rc, var, arg, flags)					\
+	(rc)->in |= (get_input_mapping(rc, arg, flags) |		\
+		     get_input_source(rc, arg)) << RC_IN_SHIFT_##var
+
+/* Bind the RC input variable <var> to the RC source <src>. */
+#define INPUT_SRC(rc, var, src, chan)					\
+	(rc)->in |= (RC_IN_SOURCE(src) |				\
+		     RC_IN_USAGE(chan)) << RC_IN_SHIFT_##var
+
+/* Bind the RC input variable <var> to a constant +/-1 */
+#define INPUT_ONE(rc, var, flags)					\
+	(rc)->in |= (RC_IN_SOURCE(ZERO) |				\
+		     (flags & INVERT ? RC_IN_MAPPING(EXPAND_NORMAL) :	\
+		      RC_IN_MAPPING(UNSIGNED_INVERT))) << RC_IN_SHIFT_##var
+
+static void
+setup_combiner(struct combiner_state *rc)
+{
+	switch (rc->mode) {
+	case GL_REPLACE:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ONE(rc, B, 0);
+
+		rc->out = RC_OUT_AB;
+		break;
+
+	case GL_MODULATE:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ARG(rc, B, 1, 0);
+
+		rc->out = RC_OUT_AB;
+		break;
+
+	case GL_ADD:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ONE(rc, B, 0);
+		INPUT_ARG(rc, C, 1, 0);
+		INPUT_ONE(rc, D, 0);
+
+		rc->out = RC_OUT_SUM;
+		break;
+
+	case GL_ADD_SIGNED:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ONE(rc, B, 0);
+		INPUT_ARG(rc, C, 1, 0);
+		INPUT_ONE(rc, D, 0);
+
+		rc->out = RC_OUT_SUM | RC_OUT_BIAS;
+		break;
+
+	case GL_INTERPOLATE:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ARG(rc, B, 2, 0);
+		INPUT_ARG(rc, C, 1, 0);
+		INPUT_ARG(rc, D, 2, INVERT);
+
+		rc->out = RC_OUT_SUM;
+		break;
+
+	case GL_SUBTRACT:
+		INPUT_ARG(rc, A, 0, 0);
+		INPUT_ONE(rc, B, 0);
+		INPUT_ARG(rc, C, 1, 0);
+		INPUT_ONE(rc, D, INVERT);
+
+		rc->out = RC_OUT_SUM;
+		break;
+
+	case GL_DOT3_RGB:
+	case GL_DOT3_RGBA:
+		INPUT_ARG(rc, A, 0, HALF_BIAS);
+		INPUT_ARG(rc, B, 1, HALF_BIAS);
+
+		rc->out = RC_OUT_DOT_AB | RC_OUT_SCALE_4;
+
+		assert(!rc->logscale);
+		break;
+
+	default:
+		assert(0);
+	}
+
+	switch (rc->logscale) {
+	case 0:
+		rc->out |= RC_OUT_SCALE_1;
+		break;
+	case 1:
+		rc->out |= RC_OUT_SCALE_2;
+		break;
+	case 2:
+		rc->out |= RC_OUT_SCALE_4;
+		break;
+	default:
+		assert(0);
+	}
+}
+
+/* Write the register combiner state out to the hardware. */
+static void
+nv10_load_combiner(GLcontext *ctx, int i, struct combiner_state *rc_a,
+		   struct combiner_state *rc_c, uint32_t rc_const)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *celsius = context_eng3d(ctx);
+
+	/* Enable the combiners we're going to need. */
+	if (i == 1) {
+		if (rc_c->out || rc_a->out)
+			rc_c->out |= 0x5 << 27;
+		else
+			rc_c->out |= 0x3 << 27;
+	}
+
+	BEGIN_RING(chan, celsius, NV10TCL_RC_IN_ALPHA(i), 1);
+	OUT_RING(chan, rc_a->in);
+	BEGIN_RING(chan, celsius, NV10TCL_RC_IN_RGB(i), 1);
+	OUT_RING(chan, rc_c->in);
+	BEGIN_RING(chan, celsius, NV10TCL_RC_COLOR(i), 1);
+	OUT_RING(chan, rc_const);
+	BEGIN_RING(chan, celsius, NV10TCL_RC_OUT_ALPHA(i), 1);
+	OUT_RING(chan, rc_a->out);
+	BEGIN_RING(chan, celsius, NV10TCL_RC_OUT_RGB(i), 1);
+	OUT_RING(chan, rc_c->out);
+}
+
+static void
+nv10_load_final(GLcontext *ctx, struct combiner_state *rc, int n)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *celsius = context_eng3d(ctx);
+
+	BEGIN_RING(chan, celsius, NV10TCL_RC_FINAL0, 2);
+	OUT_RING(chan, rc->in);
+	OUT_RING(chan, rc->in >> 32);
+}
+
+static void
+nv20_load_combiner(GLcontext *ctx, int i, struct combiner_state *rc_a,
+		   struct combiner_state *rc_c, uint32_t rc_const)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *kelvin = context_eng3d(ctx);
+
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_IN_ALPHA(i), 1);
+	OUT_RING(chan, rc_a->in);
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_OUT_ALPHA(i), 1);
+	OUT_RING(chan, rc_a->out);
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_IN_RGB(i), 1);
+	OUT_RING(chan, rc_c->in);
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_OUT_RGB(i), 1);
+	OUT_RING(chan, rc_c->out);
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_CONSTANT_COLOR0(i), 1);
+	OUT_RING(chan, rc_const);
+}
+
+static void
+nv20_load_final(GLcontext *ctx, struct combiner_state *rc, int n)
+{
+	struct nouveau_channel *chan = context_chan(ctx);
+	struct nouveau_grobj *kelvin = context_eng3d(ctx);
+
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_FINAL0, 2);
+	OUT_RING(chan, rc->in);
+	OUT_RING(chan, rc->in >> 32);
+
+	BEGIN_RING(chan, kelvin, NV20TCL_RC_ENABLE, 1);
+	OUT_RING(chan, n);
+}
+
+void
+nv10_emit_tex_env(GLcontext *ctx, int emit)
+{
+	const int i = emit - NOUVEAU_STATE_TEX_ENV0;
+	struct combiner_state rc_a, rc_c;
+	uint32_t rc_const;
+
+	/* Compute the new combiner state. */
+	if (ctx->Texture.Unit[i]._ReallyEnabled) {
+		INIT_COMBINER(RGB, ctx, &rc_c, i);
+
+		if (rc_c.mode == GL_DOT3_RGBA)
+			rc_a = rc_c;
+		else
+			INIT_COMBINER(A, ctx, &rc_a, i);
+
+		setup_combiner(&rc_c);
+		setup_combiner(&rc_a);
+
+		rc_const = pack_rgba_f(MESA_FORMAT_ARGB8888,
+				       ctx->Texture.Unit[i].EnvColor);
+
+	} else {
+		rc_a.in = rc_a.out = rc_c.in = rc_c.out = rc_const = 0;
+	}
+
+	if (context_chipset(ctx) >= 0x20)
+		nv20_load_combiner(ctx, i, &rc_a, &rc_c, rc_const);
+	else
+		nv10_load_combiner(ctx, i, &rc_a, &rc_c, rc_const);
+
+	context_dirty(ctx, FRAG);
+}
+
+void
+nv10_emit_frag(GLcontext *ctx, int emit)
+{
+	struct combiner_state rc = {};
+	int n = log2i(ctx->Texture._EnabledUnits) + 1;
+
+	/*
+	 * The final fragment value equation is something like:
+	 *	x_i = A_i * B_i + (1 - A_i) * C_i + D_i
+	 *	x_alpha = G_alpha
+	 * where D_i = E_i * F_i, i one of {red, green, blue}.
+	 */
+	if (ctx->Fog.ColorSumEnabled || ctx->Light.Enabled) {
+		INPUT_SRC(&rc, D, E_TIMES_F, RGB);
+		INPUT_SRC(&rc, F, SECONDARY_COLOR, RGB);
+	}
+
+	if (ctx->Fog.Enabled) {
+		INPUT_SRC(&rc, A, FOG, ALPHA);
+		INPUT_SRC(&rc, C, FOG, RGB);
+		INPUT_SRC(&rc, E, FOG, ALPHA);
+	} else {
+		INPUT_ONE(&rc, A, 0);
+		INPUT_ONE(&rc, C, 0);
+		INPUT_ONE(&rc, E, 0);
+	}
+
+	if (ctx->Texture._EnabledUnits) {
+		INPUT_SRC(&rc, B, SPARE0, RGB);
+		INPUT_SRC(&rc, G, SPARE0, ALPHA);
+	} else {
+		INPUT_SRC(&rc, B, PRIMARY_COLOR, RGB);
+		INPUT_SRC(&rc, G, PRIMARY_COLOR, ALPHA);
+	}
+
+	if (context_chipset(ctx) >= 0x20)
+		nv20_load_final(ctx, &rc, n);
+	else
+		nv10_load_final(ctx, &rc, n);
+}