1 files changed, 321 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv04/nv04_prim_vbuf.c b/src/gallium/drivers/nv04/nv04_prim_vbuf.c
new file mode 100644
index 0000000000..f6458232ae
--- /dev/null
+++ b/src/gallium/drivers/nv04/nv04_prim_vbuf.c
@@ -0,0 +1,321 @@
+
+#include "util/u_debug.h"
+#include "pipe/p_inlines.h"
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_compiler.h"
+
+#include "draw/draw_vbuf.h"
+
+#include "nv04_context.h"
+#include "nv04_state.h"
+
+#define VERTEX_SIZE 40
+#define VERTEX_BUFFER_SIZE (4096*VERTEX_SIZE) // 4096 vertices of 40 bytes each
+
+/**
+ * Primitive renderer for nv04.
+ */
+struct nv04_vbuf_render {
+	struct vbuf_render base;
+
+	struct nv04_context *nv04;   
+
+	/** Vertex buffer */
+	unsigned char* buffer;
+
+	/** Vertex size in bytes */
+	unsigned vertex_size;
+
+	/** Current primitive */
+	unsigned prim;
+};
+
+
+/**
+ * Basically a cast wrapper.
+ */
+static INLINE struct nv04_vbuf_render *
+nv04_vbuf_render( struct vbuf_render *render )
+{
+	assert(render);
+	return (struct nv04_vbuf_render *)render;
+}
+
+
+static const struct vertex_info *
+nv04_vbuf_render_get_vertex_info( struct vbuf_render *render )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+	struct nv04_context *nv04 = nv04_render->nv04;
+	return &nv04->vertex_info;
+}
+
+
+static boolean
+nv04_vbuf_render_allocate_vertices( struct vbuf_render *render,
+		ushort vertex_size,
+		ushort nr_vertices )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+	nv04_render->buffer = (unsigned char*) MALLOC(VERTEX_BUFFER_SIZE);
+	assert(!nv04_render->buffer);
+
+	return nv04_render->buffer ? TRUE : FALSE;
+}
+
+static void *
+nv04_vbuf_render_map_vertices( struct vbuf_render *render )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+	return nv04_render->buffer;
+}
+
+static void
+nv04_vbuf_render_unmap_vertices( struct vbuf_render *render,
+		ushort min_index,
+		ushort max_index )
+{
+}
+
+static boolean 
+nv04_vbuf_render_set_primitive( struct vbuf_render *render, 
+		unsigned prim )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+	if (prim <= PIPE_PRIM_LINE_STRIP)
+		return FALSE;
+
+	nv04_render->prim = prim;
+	return TRUE;
+}
+
+static INLINE void nv04_2triangles(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3, ushort v4, ushort v5)
+{
+	BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xA),49);
+	OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v4,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v5,8);
+	OUT_RING(0xFEDCBA);
+}
+
+static INLINE void nv04_1triangle(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2)
+{
+	BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xD),25);
+	OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+	OUT_RING(0xFED);
+}
+
+static INLINE void nv04_1quad(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3)
+{
+	BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xC),33);
+	OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
+	OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
+	OUT_RING(0xFECEDC);
+}
+
+static void nv04_vbuf_render_triangles_elts(struct nv04_vbuf_render * render, const ushort * indices, uint nr_indices)
+{
+	unsigned char* buffer = render->buffer;
+	struct nv04_context* nv04 = render->nv04;
+	int i;
+
+	for( i=0; i< nr_indices-5; i+=6)
+		nv04_2triangles(nv04,
+				buffer,
+				indices[i+0],
+				indices[i+1],
+				indices[i+2],
+				indices[i+3],
+				indices[i+4],
+				indices[i+5]
+			       );
+	if (i != nr_indices)
+	{
+		nv04_1triangle(nv04,
+				buffer,
+				indices[i+0],
+				indices[i+1],
+				indices[i+2]
+			       );
+		i+=3;
+	}
+	if (i != nr_indices)
+		NOUVEAU_ERR("Houston, we have lost some vertices\n");
+}
+
+static void nv04_vbuf_render_tri_strip_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+	const uint32_t striptbl[]={0x321210,0x543432,0x765654,0x987876,0xBA9A98,0xDCBCBA,0xFEDEDC};
+	unsigned char* buffer = render->buffer;
+	struct nv04_context* nv04 = render->nv04;
+	int i,j;
+
+	for(i = 0; i<nr_indices; i+=14) 
+	{
+		int numvert = MIN2(16, nr_indices - i);
+		int numtri = numvert - 2;
+		if (numvert<3)
+			break;
+
+		BEGIN_RING( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), numvert*8 );
+		for(j = 0; j<numvert; j++)
+			OUT_RINGp( buffer + VERTEX_SIZE * indices [i+j], 8 );
+
+		BEGIN_RING_NI( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2 );
+		for(j = 0; j<numtri/2; j++ )
+			OUT_RING(striptbl[j]);
+		if (numtri%2)
+			OUT_RING(striptbl[numtri/2]&0xFFF);
+	}
+}
+
+static void nv04_vbuf_render_tri_fan_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+	const uint32_t fantbl[]={0x320210,0x540430,0x760650,0x980870,0xBA0A90,0xDC0CB0,0xFE0ED0};
+	unsigned char* buffer = render->buffer;
+	struct nv04_context* nv04 = render->nv04;
+	int i,j;
+
+	BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), 8);
+	OUT_RINGp(buffer + VERTEX_SIZE * indices[0], 8);
+
+	for(i = 1; i<nr_indices; i+=14)
+	{
+		int numvert=MIN2(15, nr_indices - i);
+		int numtri=numvert-2;
+		if (numvert < 3)
+			break;
+
+		BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x1), numvert*8);
+
+		for(j=0;j<numvert;j++)
+			OUT_RINGp( buffer + VERTEX_SIZE * indices[ i+j ], 8 );
+
+		BEGIN_RING_NI(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2);
+		for(j = 0; j<numtri/2; j++)
+			OUT_RING(fantbl[j]);
+		if (numtri%2)
+			OUT_RING(fantbl[numtri/2]&0xFFF);
+	}
+}
+
+static void nv04_vbuf_render_quads_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
+{
+	unsigned char* buffer = render->buffer;
+	struct nv04_context* nv04 = render->nv04;
+	int i;
+
+	for(i = 0; i < nr_indices; i += 4)
+		nv04_1quad(nv04,
+				buffer,
+				indices[i+0],
+				indices[i+1],
+				indices[i+2],
+				indices[i+3]
+			       );
+}
+
+
+static void 
+nv04_vbuf_render_draw( struct vbuf_render *render,
+		const ushort *indices,
+		uint nr_indices)
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+	// emit the indices
+	switch( nv04_render->prim )
+	{
+		case PIPE_PRIM_TRIANGLES:
+			nv04_vbuf_render_triangles_elts(nv04_render, indices, nr_indices);
+			break;
+		case PIPE_PRIM_QUAD_STRIP:
+		case PIPE_PRIM_TRIANGLE_STRIP:
+			nv04_vbuf_render_tri_strip_elts(nv04_render, indices, nr_indices);
+			break;
+		case PIPE_PRIM_TRIANGLE_FAN:
+		case PIPE_PRIM_POLYGON:
+			nv04_vbuf_render_tri_fan_elts(nv04_render, indices, nr_indices);
+			break;
+		case PIPE_PRIM_QUADS:
+			nv04_vbuf_render_quads_elts(nv04_render, indices, nr_indices);
+			break;
+		default:
+			NOUVEAU_ERR("You have to implement primitive %d, young padawan\n", nv04_render->prim);
+			break;
+	}
+}
+
+
+static void
+nv04_vbuf_render_release_vertices( struct vbuf_render *render )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+
+	free(nv04_render->buffer);
+	nv04_render->buffer = NULL;
+}
+
+
+static void
+nv04_vbuf_render_destroy( struct vbuf_render *render )
+{
+	struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
+	FREE(nv04_render);
+}
+
+
+/**
+ * Create a new primitive render.
+ */
+static struct vbuf_render *
+nv04_vbuf_render_create( struct nv04_context *nv04 )
+{
+	struct nv04_vbuf_render *nv04_render = CALLOC_STRUCT(nv04_vbuf_render);
+
+	nv04_render->nv04 = nv04;
+
+	nv04_render->base.max_vertex_buffer_bytes = VERTEX_BUFFER_SIZE;
+	nv04_render->base.max_indices = 65536; 
+	nv04_render->base.get_vertex_info = nv04_vbuf_render_get_vertex_info;
+	nv04_render->base.allocate_vertices = nv04_vbuf_render_allocate_vertices;
+	nv04_render->base.map_vertices = nv04_vbuf_render_map_vertices;
+	nv04_render->base.unmap_vertices = nv04_vbuf_render_unmap_vertices;
+	nv04_render->base.set_primitive = nv04_vbuf_render_set_primitive;
+	nv04_render->base.draw = nv04_vbuf_render_draw;
+	nv04_render->base.release_vertices = nv04_vbuf_render_release_vertices;
+	nv04_render->base.destroy = nv04_vbuf_render_destroy;
+
+	return &nv04_render->base;
+}
+
+
+/**
+ * Create a new primitive vbuf/render stage.
+ */
+struct draw_stage *nv04_draw_vbuf_stage( struct nv04_context *nv04 )
+{
+	struct vbuf_render *render;
+	struct draw_stage *stage;
+
+	render = nv04_vbuf_render_create(nv04);
+	if(!render)
+		return NULL;
+
+	stage = draw_vbuf_stage( nv04->draw, render );
+	if(!stage) {
+		render->destroy(render);
+		return NULL;
+	}
+
+	return stage;
+}