1 files changed, 265 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/nouveau/nouveau_screen.c b/src/gallium/winsys/drm/nouveau/nouveau_screen.c
new file mode 100644
index 00000000000..c6d0c535887
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/nouveau_screen.c
@@ -0,0 +1,265 @@
+#include "utils.h"
+#include "vblank.h"
+#include "xmlpool.h"
+
+#include "pipe/p_context.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_cb_fbo.h"
+
+#include "nouveau_context.h"
+#include "nouveau_drm.h"
+#include "nouveau_dri.h"
+#include "nouveau_local.h"
+#include "nouveau_screen.h"
+#include "nouveau_swapbuffers.h"
+
+#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 11
+#error nouveau_drm.h version does not match expected version
+#endif
+
+/* Extension stuff, enabling of extensions handled by Gallium's GL state
+ * tracker.  But, we still need to define the entry points we want.
+ */
+#define need_GL_ARB_fragment_program
+#define need_GL_ARB_multisample
+#define need_GL_ARB_occlusion_query
+#define need_GL_ARB_point_parameters
+#define need_GL_ARB_shader_objects
+#define need_GL_ARB_texture_compression
+#define need_GL_ARB_vertex_program
+#define need_GL_ARB_vertex_shader
+#define need_GL_ARB_vertex_buffer_object
+#define need_GL_EXT_compiled_vertex_array
+#define need_GL_EXT_fog_coord
+#define need_GL_EXT_secondary_color
+#define need_GL_EXT_framebuffer_object
+#define need_GL_VERSION_2_0
+#define need_GL_VERSION_2_1
+#include "extension_helper.h"
+
+const struct dri_extension card_extensions[] =
+{
+	{ "GL_ARB_multisample", GL_ARB_multisample_functions },
+	{ "GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions },
+	{ "GL_ARB_point_parameters", GL_ARB_point_parameters_functions },
+	{ "GL_ARB_shader_objects", GL_ARB_shader_objects_functions },
+	{ "GL_ARB_shading_language_100", GL_VERSION_2_0_functions },
+	{ "GL_ARB_shading_language_120", GL_VERSION_2_1_functions },
+	{ "GL_ARB_texture_compression", GL_ARB_texture_compression_functions },
+	{ "GL_ARB_vertex_program", GL_ARB_vertex_program_functions },
+	{ "GL_ARB_vertex_shader", GL_ARB_vertex_shader_functions },
+	{ "GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions },
+	{ "GL_EXT_compiled_vertex_array", GL_EXT_compiled_vertex_array_functions },
+	{ "GL_EXT_fog_coord", GL_EXT_fog_coord_functions },
+	{ "GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions },
+	{ "GL_EXT_secondary_color", GL_EXT_secondary_color_functions },
+	{ NULL, 0 }
+};
+
+PUBLIC const char __driConfigOptions[] =
+DRI_CONF_BEGIN
+DRI_CONF_END;
+static const GLuint __driNConfigOptions = 0;
+
+extern const struct dri_extension common_extensions[];
+extern const struct dri_extension nv40_extensions[];
+
+static GLboolean
+nouveau_create_buffer(__DRIscreenPrivate * driScrnPriv,
+		      __DRIdrawablePrivate * driDrawPriv,
+		      const __GLcontextModes *glVis, GLboolean pixmapBuffer)
+{
+	struct nouveau_framebuffer *nvfb;
+	enum pipe_format colour, depth, stencil;
+
+	if (pixmapBuffer)
+		return GL_FALSE;
+
+	nvfb = CALLOC_STRUCT(nouveau_framebuffer);
+	if (!nvfb)
+		return GL_FALSE;
+
+	if (glVis->redBits == 5)
+		colour = PIPE_FORMAT_R5G6B5_UNORM;
+	else
+		colour = PIPE_FORMAT_A8R8G8B8_UNORM;
+
+	if (glVis->depthBits == 16)
+		depth = PIPE_FORMAT_Z16_UNORM;
+	else if (glVis->depthBits == 24)
+		depth = PIPE_FORMAT_Z24S8_UNORM;
+	else
+		depth = PIPE_FORMAT_NONE;
+
+	if (glVis->stencilBits == 8)
+		stencil = PIPE_FORMAT_Z24S8_UNORM;
+	else
+		stencil = PIPE_FORMAT_NONE;
+
+	nvfb->stfb = st_create_framebuffer(glVis, colour, depth, stencil,
+					   driDrawPriv->w, driDrawPriv->h,
+					   (void*)nvfb);
+	if (!nvfb->stfb) {
+		free(nvfb);
+		return  GL_FALSE;
+	}
+
+	driDrawPriv->driverPrivate = (void *)nvfb;
+	return GL_TRUE;
+}
+
+static void
+nouveau_destroy_buffer(__DRIdrawablePrivate * driDrawPriv)
+{
+	struct nouveau_framebuffer *nvfb;
+	
+	nvfb = (struct nouveau_framebuffer *)driDrawPriv->driverPrivate;
+	st_unreference_framebuffer(nvfb->stfb);
+	free(nvfb);
+}
+
+static __DRIconfig **
+nouveau_fill_in_modes(__DRIscreenPrivate *psp,
+		      unsigned pixel_bits, unsigned depth_bits,
+		      unsigned stencil_bits, GLboolean have_back_buffer)
+{
+	__DRIconfig **configs;
+	unsigned depth_buffer_factor;
+	unsigned back_buffer_factor;
+	GLenum fb_format;
+	GLenum fb_type;
+
+	static const GLenum back_buffer_modes[] = {
+		GLX_NONE, GLX_SWAP_UNDEFINED_OML,
+	};
+
+	uint8_t depth_bits_array[3];
+	uint8_t stencil_bits_array[3];
+	uint8_t msaa_samples_array[1];
+
+	depth_bits_array[0] = 0;
+	depth_bits_array[1] = depth_bits;
+	depth_bits_array[2] = depth_bits;
+
+	/* Just like with the accumulation buffer, always provide some modes
+	 * with a stencil buffer.  It will be a sw fallback, but some apps won't
+	 * care about that.
+	 */
+	stencil_bits_array[0] = 0;
+	stencil_bits_array[1] = 0;
+	if (depth_bits == 24)
+		stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
+	stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
+
+	msaa_samples_array[0] = 0;
+
+	depth_buffer_factor =
+		((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
+	back_buffer_factor = (have_back_buffer) ? 3 : 1;
+
+	if (pixel_bits == 16) {
+		fb_format = GL_RGB;
+		fb_type = GL_UNSIGNED_SHORT_5_6_5;
+	}
+	else {
+		fb_format = GL_BGRA;
+		fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
+	}
+
+	configs = driCreateConfigs(fb_format, fb_type,
+				   depth_bits_array, stencil_bits_array,
+				   depth_buffer_factor, back_buffer_modes,
+				   back_buffer_factor, msaa_samples_array, 1);
+	if (configs == NULL) {
+	 fprintf(stderr, "[%s:%u] Error creating FBConfig!\n",
+			 __func__, __LINE__);
+		return NULL;
+	}
+
+	return configs;
+}
+
+static const __DRIconfig **
+nouveau_screen_create(__DRIscreenPrivate *psp)
+{
+	struct nouveau_dri *nv_dri = psp->pDevPriv;
+	struct nouveau_screen *nv_screen;
+	static const __DRIversion ddx_expected =
+		{ 0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL };
+	static const __DRIversion dri_expected = { 4, 0, 0 };
+	static const __DRIversion drm_expected =
+		{ 0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL };
+	int ret;
+
+	if (!driCheckDriDdxDrmVersions2("nouveau",
+					&psp->dri_version, &dri_expected,
+					&psp->ddx_version, &ddx_expected,
+					&psp->drm_version, &drm_expected)) {
+		return NULL;
+	}
+
+	if (drm_expected.patch != psp->drm_version.patch) {
+		fprintf(stderr, "Incompatible DRM patch level.\n"
+				"Expected: %d\n" "Current : %d\n",
+			drm_expected.patch, psp->drm_version.patch);
+		return NULL;
+	}
+
+	driInitExtensions(NULL, card_extensions, GL_FALSE);
+
+	if (psp->devPrivSize != sizeof(struct nouveau_dri)) {
+		NOUVEAU_ERR("DRI struct mismatch between DDX/DRI\n");
+		return GL_FALSE;
+	}
+
+	nv_screen = CALLOC_STRUCT(nouveau_screen);
+	if (!nv_screen)
+		return GL_FALSE;
+	nv_screen->driScrnPriv = psp;
+	psp->private = (void *)nv_screen;
+
+	driParseOptionInfo(&nv_screen->option_cache,
+			   __driConfigOptions, __driNConfigOptions);
+
+	if ((ret = nouveau_device_open_existing(&nv_screen->device, 0,
+						psp->fd, 0))) {
+		NOUVEAU_ERR("Failed opening nouveau device: %d\n", ret);
+		return GL_FALSE;
+	}
+
+	nv_screen->front_offset = nv_dri->front_offset;
+	nv_screen->front_pitch  = nv_dri->front_pitch * (nv_dri->bpp / 8);
+	nv_screen->front_cpp = nv_dri->bpp / 8;
+	nv_screen->front_height = nv_dri->height;
+
+	return (const __DRIconfig **)
+		nouveau_fill_in_modes(psp, nv_dri->bpp,
+				      (nv_dri->bpp == 16) ? 16 : 24,
+				      (nv_dri->bpp == 16) ? 0 : 8, 1);
+}
+
+static void
+nouveau_screen_destroy(__DRIscreenPrivate *driScrnPriv)
+{
+	struct nouveau_screen *nv_screen = driScrnPriv->private;
+
+	driScrnPriv->private = NULL;
+	FREE(nv_screen);
+}
+
+const struct __DriverAPIRec
+driDriverAPI = {
+	.InitScreen	= nouveau_screen_create,
+	.DestroyScreen	= nouveau_screen_destroy,
+	.CreateContext	= nouveau_context_create,
+	.DestroyContext	= nouveau_context_destroy,
+	.CreateBuffer	= nouveau_create_buffer,
+	.DestroyBuffer	= nouveau_destroy_buffer,
+	.SwapBuffers	= nouveau_swap_buffers,
+	.MakeCurrent	= nouveau_context_bind,
+	.UnbindContext	= nouveau_context_unbind,
+	.CopySubBuffer	= nouveau_copy_sub_buffer,
+
+	.InitScreen2	= NULL, /* one day, I promise! */
+};
+