Add start of vertex shader backend, will most likely not work correctly yet

1 files changed, 74 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.h b/src/mesa/drivers/dri/nouveau/nouveau_shader.h
new file mode 100644
index 0000000000..2dbae53460
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.h
@@ -0,0 +1,74 @@
+#ifndef __NOUVEAU_SHADER_H__
+#define __NOUVEAU_SHADER_H__
+
+typedef struct _nouveau_regrec         nouveau_regrec;
+typedef struct _nouveau_srcreg         nouveau_srcreg;
+typedef struct _nouveau_dstreg         nouveau_dstreg;
+typedef struct _nouveau_vertex_program nouveau_vertex_program;
+
+/* Instruction flags, used by emit_arith functions */
+#define NOUVEAU_OUT_ABS (1 << 0)
+#define NOUVEAU_OUT_SAT (1 << 1)
+
+typedef enum {
+	UNKNOWN = 0,
+	HW_TEMP,
+	HW_INPUT,
+	HW_CONST,
+	HW_OUTPUT
+} nouveau_regtype;
+
+/* To track a hardware register's state */
+struct _nouveau_regrec {
+	nouveau_regtype file;
+	int             hw_id;
+	int             ref;
+};
+
+struct _nouveau_srcreg {
+	nouveau_regrec *hw;
+	int idx;
+
+	int negate;
+	int swizzle;
+};
+
+struct _nouveau_dstreg {
+	nouveau_regrec *hw;
+	int idx;
+
+	int mask;
+
+	int condup, condreg;
+	int condtest;
+	int condswz;
+};
+
+struct _nouveau_vertex_program {
+	struct vertex_program mesa_program; /* must be first! */
+
+	/* Used to convert from Mesa register state to on-hardware state */
+	long           *temps_in_use;
+	nouveau_regrec  inputs[14];
+	nouveau_regrec  temps[64];
+
+	long           *hwtemps_written;
+	long           *hwtemps_in_use;
+
+	unsigned int   *insns;
+	unsigned int    insns_alloced;
+	unsigned int    inst_count;
+	unsigned int    inst_start;
+};
+
+/* Helper functions */
+void nvsRecInit   (long **rec, int max);
+void nvsBitSet    (long *rec, int bit);
+void nvsBitClear  (long *rec, int bit);
+int  nvsAllocIndex(long *rec, int max);
+
+int nv40TranslateVertexProgram(nouveau_vertex_program *vp);
+//int nv40TranslateFragmentProgram(nouveau_vertex_program *vp);
+
+#endif /* __NOUVEAU_SHADER_H__ */
+