r300: half float support
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index bb0e6db..24c51d4 100644
--- a/src/mesa/drivers/dri/r300/r300_context.c
+++ b/src/mesa/drivers/dri/r300/r300_context.c
@@ -97,6 +97,7 @@
/* *INDENT-OFF* */
{"GL_ARB_depth_texture", NULL},
{"GL_ARB_fragment_program", NULL},
+ {"GL_ARB_half_float_vertex", NULL},
{"GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions},
{"GL_ARB_multitexture", NULL},
{"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
diff --git a/src/mesa/drivers/dri/r300/r300_draw.c b/src/mesa/drivers/dri/r300/r300_draw.c
index 3dcd986..2219821 100644
--- a/src/mesa/drivers/dri/r300/r300_draw.c
+++ b/src/mesa/drivers/dri/r300/r300_draw.c
@@ -56,6 +56,8 @@
switch (type) {
case GL_DOUBLE:
return sizeof(GLdouble);
+ case GL_HALF_FLOAT:
+ return sizeof(GLhalfARB);
case GL_FLOAT:
return sizeof(GLfloat);
case GL_INT:
@@ -385,6 +387,18 @@
r300_attr._signed = 0;
r300_attr.normalize = 0;
break;
+ case GL_HALF_FLOAT:
+ switch (input->Size) {
+ case 1:
+ case 2:
+ r300_attr.data_type = R300_DATA_TYPE_FLT16_2;
+ break;
+ case 3:
+ case 4:
+ r300_attr.data_type = R300_DATA_TYPE_FLT16_4;
+ break;
+ }
+ break;
case GL_SHORT:
r300_attr._signed = 1;
r300_attr.normalize = input->Normalized;
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index ea684e7..d18ebab 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -230,6 +230,9 @@
# define R300_DATA_TYPE_SHORT_4 7
# define R300_DATA_TYPE_VECTOR_3_TTT 8
# define R300_DATA_TYPE_VECTOR_3_EET 9
+# define R300_DATA_TYPE_FLT16_2 11
+# define R300_DATA_TYPE_FLT16_4 12
+
# define R300_SKIP_DWORDS_SHIFT 4
# define R300_DST_VEC_LOC_SHIFT 8
# define R300_LAST_VEC (1 << 13)