nouveau: implement pipe_screen

Untested on NV3x/NV5x.  Quite possibly broken.

1 files changed, 151 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv40/nv40_screen.c b/src/gallium/drivers/nv40/nv40_screen.c
new file mode 100644
index 0000000000..1941598c64
--- /dev/null
+++ b/src/gallium/drivers/nv40/nv40_screen.c
@@ -0,0 +1,151 @@
+#include "pipe/p_screen.h"
+#include "pipe/p_util.h"
+
+#include "nv40_context.h"
+#include "nv40_screen.h"
+
+static const char *
+nv40_screen_get_name(struct pipe_screen *pscreen)
+{
+	struct nv40_screen *screen = nv40_screen(pscreen);
+	static char buffer[128];
+
+	snprintf(buffer, sizeof(buffer), "NV%02X", screen->chipset);
+	return buffer;
+}
+
+static const char *
+nv40_screen_get_vendor(struct pipe_screen *pscreen)
+{
+	return "nouveau";
+}
+
+static int
+nv40_screen_get_param(struct pipe_screen *pscreen, int param)
+{
+	switch (param) {
+	case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
+		return 16;
+	case PIPE_CAP_NPOT_TEXTURES:
+		return 1;
+	case PIPE_CAP_TWO_SIDED_STENCIL:
+		return 1;
+	case PIPE_CAP_GLSL:
+		return 0;
+	case PIPE_CAP_S3TC:
+		return 0;
+	case PIPE_CAP_ANISOTROPIC_FILTER:
+		return 1;
+	case PIPE_CAP_POINT_SPRITE:
+		return 1;
+	case PIPE_CAP_MAX_RENDER_TARGETS:
+		return 4;
+	case PIPE_CAP_OCCLUSION_QUERY:
+		return 1;
+	case PIPE_CAP_TEXTURE_SHADOW_MAP:
+		return 1;
+	case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
+		return 13;
+	case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
+		return 10;
+	case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
+		return 13;
+	default:
+		NOUVEAU_ERR("Unknown PIPE_CAP %d\n", param);
+		return 0;
+	}
+}
+
+static float
+nv40_screen_get_paramf(struct pipe_screen *pscreen, int param)
+{
+	switch (param) {
+	case PIPE_CAP_MAX_LINE_WIDTH:
+	case PIPE_CAP_MAX_LINE_WIDTH_AA:
+		return 10.0;
+	case PIPE_CAP_MAX_POINT_WIDTH:
+	case PIPE_CAP_MAX_POINT_WIDTH_AA:
+		return 64.0;
+	case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
+		return 16.0;
+	case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
+		return 16.0;
+	case PIPE_CAP_BITMAP_TEXCOORD_BIAS:
+		return 0.0;
+	default:
+		NOUVEAU_ERR("Unknown PIPE_CAP %d\n", param);
+		return 0.0;
+	}
+}
+
+static boolean
+nv40_screen_surface_format_supported(struct pipe_screen *pscreen,
+				     enum pipe_format format, uint type)
+{
+	switch (type) {
+	case PIPE_SURFACE:
+		switch (format) {
+		case PIPE_FORMAT_A8R8G8B8_UNORM:
+		case PIPE_FORMAT_R5G6B5_UNORM: 
+		case PIPE_FORMAT_Z24S8_UNORM:
+		case PIPE_FORMAT_Z16_UNORM:
+			return TRUE;
+		default:
+			break;
+		}
+		break;
+	case PIPE_TEXTURE:
+		switch (format) {
+		case PIPE_FORMAT_A8R8G8B8_UNORM:
+		case PIPE_FORMAT_A1R5G5B5_UNORM:
+		case PIPE_FORMAT_A4R4G4B4_UNORM:
+		case PIPE_FORMAT_R5G6B5_UNORM: 
+		case PIPE_FORMAT_U_L8:
+		case PIPE_FORMAT_U_A8:
+		case PIPE_FORMAT_U_I8:
+		case PIPE_FORMAT_U_A8_L8:
+		case PIPE_FORMAT_Z16_UNORM:
+		case PIPE_FORMAT_Z24S8_UNORM:
+			return TRUE;
+		default:
+			break;
+		}
+		break;
+	default:
+		assert(0);
+	};
+
+	return FALSE;
+}
+
+static void
+nv40_screen_destroy(struct pipe_screen *pscreen)
+{
+	FREE(pscreen);
+}
+
+struct pipe_screen *
+nv40_screen_create(struct pipe_winsys *ws, unsigned chipset)
+{
+	struct nv40_screen *screen = CALLOC_STRUCT(nv40_screen);
+
+	if (!screen)
+		return NULL;
+
+	screen->chipset = chipset;
+
+	screen->pipe.winsys = ws;
+	screen->pipe.destroy = nv40_screen_destroy;
+
+	screen->pipe.get_name = nv40_screen_get_name;
+	screen->pipe.get_vendor = nv40_screen_get_vendor;
+	screen->pipe.get_param = nv40_screen_get_param;
+	screen->pipe.get_paramf = nv40_screen_get_paramf;
+
+	screen->pipe.is_format_supported = nv40_screen_surface_format_supported;
+
+	nv40_screen_init_miptree_functions(&screen->pipe);
+
+	return &screen->pipe;
+}
+