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authorAlex Deucher <alexdeucher@gmail.com>2009-10-29 19:42:12 -0400
committerAlex Deucher <alexdeucher@gmail.com>2009-10-29 19:42:52 -0400
commitb924579bd4afaf5daa9df8d4f120f42fa20cafc6 (patch)
treede2d0ffa46bd105e09cf079741705ca9634f425c /src/mesa/drivers/dri
parentd0b6147291fe42d7d733b3d0e5b10c4f4f08030f (diff)
r600: Add support for ARB_depth_clamp
Diffstat (limited to 'src/mesa/drivers/dri')
-rw-r--r--src/mesa/drivers/dri/r600/r600_context.c1
-rw-r--r--src/mesa/drivers/dri/r600/r700_state.c15
2 files changed, 14 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/r600/r600_context.c b/src/mesa/drivers/dri/r600/r600_context.c
index 6de151d51b..dbd233729c 100644
--- a/src/mesa/drivers/dri/r600/r600_context.c
+++ b/src/mesa/drivers/dri/r600/r600_context.c
@@ -94,6 +94,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
static const struct dri_extension card_extensions[] = {
/* *INDENT-OFF* */
+ {"GL_ARB_depth_clamp", NULL},
{"GL_ARB_depth_texture", NULL},
{"GL_ARB_fragment_program", NULL},
{"GL_ARB_occlusion_query", GL_ARB_occlusion_query_functions},
diff --git a/src/mesa/drivers/dri/r600/r700_state.c b/src/mesa/drivers/dri/r600/r700_state.c
index 2b42bfa3f9..b278887266 100644
--- a/src/mesa/drivers/dri/r600/r700_state.c
+++ b/src/mesa/drivers/dri/r600/r700_state.c
@@ -1030,6 +1030,7 @@ static void r700UpdateWindow(GLcontext * ctx, int id) //--------------------
GLfloat tz = v[MAT_TZ] * depthScale;
R600_STATECHANGE(context, vpt);
+ R600_STATECHANGE(context, cl);
r700->viewport[id].PA_CL_VPORT_XSCALE.f32All = sx;
r700->viewport[id].PA_CL_VPORT_XOFFSET.f32All = tx;
@@ -1040,6 +1041,18 @@ static void r700UpdateWindow(GLcontext * ctx, int id) //--------------------
r700->viewport[id].PA_CL_VPORT_ZSCALE.f32All = sz;
r700->viewport[id].PA_CL_VPORT_ZOFFSET.f32All = tz;
+ if (ctx->Transform.DepthClamp) {
+ r700->viewport[id].PA_SC_VPORT_ZMIN_0.f32All = MIN2(ctx->Viewport.Near, ctx->Viewport.Far);
+ r700->viewport[id].PA_SC_VPORT_ZMAX_0.f32All = MAX2(ctx->Viewport.Near, ctx->Viewport.Far);
+ SETbit(r700->PA_CL_CLIP_CNTL.u32All, ZCLIP_NEAR_DISABLE_bit);
+ SETbit(r700->PA_CL_CLIP_CNTL.u32All, ZCLIP_FAR_DISABLE_bit);
+ } else {
+ r700->viewport[id].PA_SC_VPORT_ZMIN_0.f32All = 0.0;
+ r700->viewport[id].PA_SC_VPORT_ZMAX_0.f32All = 1.0;
+ CLEARbit(r700->PA_CL_CLIP_CNTL.u32All, ZCLIP_NEAR_DISABLE_bit);
+ CLEARbit(r700->PA_CL_CLIP_CNTL.u32All, ZCLIP_FAR_DISABLE_bit);
+ }
+
r700->viewport[id].enabled = GL_TRUE;
r700SetScissor(context);
@@ -1345,8 +1358,6 @@ void r700SetScissor(context_t *context) //---------------
SETfield(r700->viewport[id].PA_SC_VPORT_SCISSOR_0_BR.u32All, y2,
PA_SC_VPORT_SCISSOR_0_BR__BR_Y_shift, PA_SC_VPORT_SCISSOR_0_BR__BR_Y_mask);
- r700->viewport[id].PA_SC_VPORT_ZMIN_0.u32All = 0;
- r700->viewport[id].PA_SC_VPORT_ZMAX_0.u32All = 0x3F800000;
r700->viewport[id].enabled = GL_TRUE;
}