nv04.

1 files changed, 100 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv04/nv04_fragtex.c b/src/gallium/drivers/nv04/nv04_fragtex.c
new file mode 100644
index 00000000000..3db673cd2c1
--- /dev/null
+++ b/src/gallium/drivers/nv04/nv04_fragtex.c
@@ -0,0 +1,100 @@
+#include "nv04_context.h"
+
+static INLINE int log2i(int i)
+{
+	int r = 0;
+
+	if (i & 0xffff0000) {
+		i >>= 16;
+		r += 16;
+	}
+	if (i & 0x0000ff00) {
+		i >>= 8;
+		r += 8;
+	}
+	if (i & 0x000000f0) {
+		i >>= 4;
+		r += 4;
+	}
+	if (i & 0x0000000c) {
+		i >>= 2;
+		r += 2;
+	}
+	if (i & 0x00000002) {
+		r += 1;
+	}
+	return r;
+}
+
+#define _(m,tf)                                                                \
+{                                                                              \
+  PIPE_FORMAT_##m,                                                             \
+  NV04_DX5_TEXTURED_TRIANGLE_FORMAT_COLOR_##tf,                                               \
+}
+
+struct nv04_texture_format {
+	uint	pipe;
+	int     format;
+};
+
+static struct nv04_texture_format
+nv04_texture_formats[] = {
+	_(A8R8G8B8_UNORM, A8R8G8B8),
+	_(X8R8G8B8_UNORM, X8R8G8B8),
+	_(A1R5G5B5_UNORM, A1R5G5B5),
+	_(A4R4G4B4_UNORM, A4R4G4B4),
+	_(L8_UNORM,       Y8      ),
+	_(A8_UNORM,       Y8      ),
+};
+
+static uint32_t
+nv04_fragtex_format(uint pipe_format)
+{
+	struct nv04_texture_format *tf = nv04_texture_formats;
+	char fs[128];
+	int i;
+
+	for (i=0; i< sizeof(nv04_texture_formats)/sizeof(nv04_texture_formats[0]); i++) {
+		if (tf->pipe == pipe_format)
+			return tf->format;
+		tf++;
+	}
+
+	pf_sprint_name(fs, pipe_format);
+	NOUVEAU_ERR("unknown texture format %s\n", fs);
+	return 0;
+}
+
+
+static void
+nv04_fragtex_build(struct nv04_context *nv04, int unit)
+{
+	struct nv04_miptree *nv04mt = nv04->tex_miptree[unit];
+	struct pipe_texture *pt = &nv04mt->base;
+
+	switch (pt->target) {
+	case PIPE_TEXTURE_2D:
+		break;
+	default:
+		NOUVEAU_ERR("Unknown target %d\n", pt->target);
+		return;
+	}
+
+	nv04->fragtex.format = NV04_DX5_TEXTURED_TRIANGLE_FORMAT_ORIGIN_ZOH_CORNER 
+		| NV04_DX5_TEXTURED_TRIANGLE_FORMAT_ORIGIN_FOH_CORNER
+		| nv04_fragtex_format(pt->format)
+		| ( (pt->last_level + 1) << NV04_DX5_TEXTURED_TRIANGLE_FORMAT_MIPMAP_LEVELS_SHIFT )
+		| ( log2i(pt->width[0]) << NV04_DX5_TEXTURED_TRIANGLE_FORMAT_BASE_SIZE_U_SHIFT )
+		| ( log2i(pt->height[0]) << NV04_DX5_TEXTURED_TRIANGLE_FORMAT_BASE_SIZE_V_SHIFT )
+		| NV04_DX5_TEXTURED_TRIANGLE_FORMAT_ADDRESSU_CLAMP_TO_EDGE
+		| NV04_DX5_TEXTURED_TRIANGLE_FORMAT_ADDRESSV_CLAMP_TO_EDGE
+		;
+}
+
+
+void
+nv04_fragtex_bind(struct nv04_context *nv04)
+{
+	nv04_fragtex_build(nv04, 0);
+}
+