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

1 files changed, 91 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_shader.c b/src/mesa/drivers/dri/nouveau/nouveau_shader.c
new file mode 100644
index 0000000000..ef8f02e910
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_shader.c
@@ -0,0 +1,91 @@
+#include "glheader.h"
+#include "macros.h"
+#include "enums.h"
+
+#include "program.h"
+#include "nouveau_context.h"
+#include "nouveau_shader.h"
+
+static struct program *
+nv40NewProgram(GLcontext *ctx, GLenum target, GLuint id)
+{
+}
+
+static void
+nv40BindProgram(GLcontext *ctx, GLenum target, struct program *prog)
+{
+}
+
+static void
+nv40DeleteProgram(GLcontext *ctx, struct program *prog)
+{
+}
+
+static void
+nv40ProgramStringNotify(GLcontext *ctx, GLenum target,
+		                struct program *prog)
+{
+}
+
+static GLboolean
+nv40IsProgramNative(GLcontext *ctx, GLenum target, struct program *prog)
+{
+}
+
+void
+nouveauInitShaderFuncs(GLcontext *ctx)
+{
+	struct nouveau_context *nmesa = NOUVEAU_CONTEXT(ctx);
+
+	if (nmesa->screen->card_type == NV_40) {
+		ctx->Driver.NewProgram          = nv40NewProgram;
+		ctx->Driver.BindProgram         = nv40BindProgram;
+		ctx->Driver.DeleteProgram       = nv40DeleteProgram;
+		ctx->Driver.ProgramStringNotify = nv40ProgramStringNotify;
+		ctx->Driver.IsProgramNative     = nv40IsProgramNative;
+	}
+}
+
+#define LONGBITS (sizeof(long) * 8)
+void
+nvsBitSet(long *rec, int bit)
+{
+	int ri = bit / LONGBITS;
+	int rb = bit % LONGBITS;
+
+	rec[ri] |= (1 << rb);
+}
+
+void
+nvsBitClear(long *rec, int bit)
+{
+	int ri = bit / LONGBITS;
+	int rb = bit % LONGBITS;
+
+	rec[ri] &= ~(1 << rb);
+}
+
+void
+nvsRecInit(long **rec, int max)
+{
+	int c = (max / LONGBITS) + ((max % LONGBITS) ? 1 : 0);
+	*rec = calloc(c, sizeof(long));
+}
+
+int
+nvsAllocIndex(long *rec, int max)
+{
+	int c = (max / LONGBITS) + ((max % LONGBITS) ? 1 : 0);
+	int i, idx = 0;
+
+	for (i=0;i<c;i++) {
+		idx = ffsl(~rec[i]);
+		if (idx) {
+			nvsBitSet(rec, (idx - 1));
+			break;
+		}
+	}
+
+	return (idx - 1);
+}
+