nv30, nv40: partially non-trivially unify sampler state in nv[34]0_state.c

Many things, like texture wrap modes and min/mag filters are common.

Some others, like annisotropy and lod settings, are not.

1 files changed, 133 insertions, 0 deletions

diff --git a/src/gallium/drivers/nvfx/nvfx_tex.h b/src/gallium/drivers/nvfx/nvfx_tex.h
new file mode 100644
index 00000000000..69187a79e79
--- /dev/null
+++ b/src/gallium/drivers/nvfx/nvfx_tex.h
@@ -0,0 +1,133 @@
+#ifndef NVFX_TEX_H_
+#define NVFX_TEX_H_
+
+static inline unsigned
+nvfx_tex_wrap_mode(unsigned wrap) {
+	unsigned ret;
+
+	switch (wrap) {
+	case PIPE_TEX_WRAP_REPEAT:
+		ret = NV34TCL_TX_WRAP_S_REPEAT;
+		break;
+	case PIPE_TEX_WRAP_MIRROR_REPEAT:
+		ret = NV34TCL_TX_WRAP_S_MIRRORED_REPEAT;
+		break;
+	case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+		ret = NV34TCL_TX_WRAP_S_CLAMP_TO_EDGE;
+		break;
+	case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+		ret = NV34TCL_TX_WRAP_S_CLAMP_TO_BORDER;
+		break;
+	case PIPE_TEX_WRAP_CLAMP:
+		ret = NV34TCL_TX_WRAP_S_CLAMP;
+		break;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
+		ret = NV40TCL_TEX_WRAP_S_MIRROR_CLAMP_TO_EDGE;
+		break;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
+		ret = NV40TCL_TEX_WRAP_S_MIRROR_CLAMP_TO_BORDER;
+		break;
+	case PIPE_TEX_WRAP_MIRROR_CLAMP:
+		ret = NV40TCL_TEX_WRAP_S_MIRROR_CLAMP;
+		break;
+	default:
+		NOUVEAU_ERR("unknown wrap mode: %d\n", wrap);
+		ret = NV34TCL_TX_WRAP_S_REPEAT;
+		break;
+	}
+
+	return ret >> NV34TCL_TX_WRAP_S_SHIFT;
+}
+
+static inline unsigned
+nvfx_tex_wrap_compare_mode(const struct pipe_sampler_state* cso)
+{
+	if (cso->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
+		switch (cso->compare_func) {
+		case PIPE_FUNC_NEVER:
+			return NV34TCL_TX_WRAP_RCOMP_NEVER;
+		case PIPE_FUNC_GREATER:
+			return NV34TCL_TX_WRAP_RCOMP_GREATER;
+		case PIPE_FUNC_EQUAL:
+			return NV34TCL_TX_WRAP_RCOMP_EQUAL;
+		case PIPE_FUNC_GEQUAL:
+			return NV34TCL_TX_WRAP_RCOMP_GEQUAL;
+		case PIPE_FUNC_LESS:
+			return NV34TCL_TX_WRAP_RCOMP_LESS;
+		case PIPE_FUNC_NOTEQUAL:
+			return NV34TCL_TX_WRAP_RCOMP_NOTEQUAL;
+		case PIPE_FUNC_LEQUAL:
+			return NV34TCL_TX_WRAP_RCOMP_LEQUAL;
+		case PIPE_FUNC_ALWAYS:
+			return NV34TCL_TX_WRAP_RCOMP_ALWAYS;
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+
+static inline unsigned nvfx_tex_filter(const struct pipe_sampler_state* cso)
+{
+	unsigned filter = 0;
+	switch (cso->mag_img_filter) {
+	case PIPE_TEX_FILTER_LINEAR:
+		filter |= NV34TCL_TX_FILTER_MAGNIFY_LINEAR;
+		break;
+	case PIPE_TEX_FILTER_NEAREST:
+	default:
+		filter |= NV34TCL_TX_FILTER_MAGNIFY_NEAREST;
+		break;
+	}
+
+	switch (cso->min_img_filter) {
+	case PIPE_TEX_FILTER_LINEAR:
+		switch (cso->min_mip_filter) {
+		case PIPE_TEX_MIPFILTER_NEAREST:
+			filter |= NV34TCL_TX_FILTER_MINIFY_LINEAR_MIPMAP_NEAREST;
+			break;
+		case PIPE_TEX_MIPFILTER_LINEAR:
+			filter |= NV34TCL_TX_FILTER_MINIFY_LINEAR_MIPMAP_LINEAR;
+			break;
+		case PIPE_TEX_MIPFILTER_NONE:
+		default:
+			filter |= NV34TCL_TX_FILTER_MINIFY_LINEAR;
+			break;
+		}
+		break;
+	case PIPE_TEX_FILTER_NEAREST:
+	default:
+		switch (cso->min_mip_filter) {
+		case PIPE_TEX_MIPFILTER_NEAREST:
+			filter |= NV34TCL_TX_FILTER_MINIFY_NEAREST_MIPMAP_NEAREST;
+		break;
+		case PIPE_TEX_MIPFILTER_LINEAR:
+			filter |= NV34TCL_TX_FILTER_MINIFY_NEAREST_MIPMAP_LINEAR;
+			break;
+		case PIPE_TEX_MIPFILTER_NONE:
+		default:
+			filter |= NV34TCL_TX_FILTER_MINIFY_NEAREST;
+			break;
+		}
+		break;
+	}
+	return filter;
+}
+
+static inline unsigned nvfx_tex_border_color(const float* border_color)
+{
+	return ((float_to_ubyte(border_color[3]) << 24) |
+		    (float_to_ubyte(border_color[0]) << 16) |
+		    (float_to_ubyte(border_color[1]) <<  8) |
+		    (float_to_ubyte(border_color[2]) <<  0));
+}
+
+struct nvfx_sampler_state {
+	uint32_t fmt;
+	uint32_t wrap;
+	uint32_t en;
+	uint32_t filt;
+	uint32_t bcol;
+};
+
+#endif /* NVFX_TEX_H_ */