glClear() placeholder code

It draws something!

3 files changed, 42 insertions, 5 deletions

diff --git a/src/mesa/drivers/dri/glamo/glamo_context.c b/src/mesa/drivers/dri/glamo/glamo_context.c
index 6e86faf32e..77ae4349d9 100644
--- a/src/mesa/drivers/dri/glamo/glamo_context.c
+++ b/src/mesa/drivers/dri/glamo/glamo_context.c
@@ -178,8 +178,8 @@ void glamoDestroyContext(__DRIcontext *driContextPriv)
 }
 
 
-static void glamo_update_renderbuffers(__DRIcontext *context,
-                                       __DRIdrawable *drawable)
+void glamo_update_renderbuffers(__DRIcontext *context,
+                                __DRIdrawable *drawable)
 {
 	unsigned int attachments[10];
 	__DRIbuffer *buffers;
diff --git a/src/mesa/drivers/dri/glamo/glamo_context.h b/src/mesa/drivers/dri/glamo/glamo_context.h
index 624cfde239..ed4f525a8a 100644
--- a/src/mesa/drivers/dri/glamo/glamo_context.h
+++ b/src/mesa/drivers/dri/glamo/glamo_context.h
@@ -77,5 +77,7 @@ extern GLboolean glamoMakeCurrent(__DRIcontext *driContextPriv,
                                   __DRIdrawable *driDrawPriv,
                                   __DRIdrawable *driReadPriv);
 extern GLboolean glamoUnbindContext(__DRIcontext *driContextPriv);
+extern void glamo_update_renderbuffers(__DRIcontext *context,
+                                       __DRIdrawable *drawable);
 
 #endif   /* __GLAMO_CONTEXT_H */
diff --git a/src/mesa/drivers/dri/glamo/glamo_state.c b/src/mesa/drivers/dri/glamo/glamo_state.c
index 795d62b058..d7bbf1c3fd 100644
--- a/src/mesa/drivers/dri/glamo/glamo_state.c
+++ b/src/mesa/drivers/dri/glamo/glamo_state.c
@@ -107,11 +107,11 @@ static void glamoClear(GLcontext *ctx, GLbitfield mask)
 
 		glamoDRMAddCommandBO(gCtx, GLAMO_REG_2D_DST_ADDRL, grb->bo);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_PITCH,
-		                   grb->width & 0x7ff);
+		                   grb->pitch & 0x7ff);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_HEIGHT,
 		                   grb->height);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_PAT_FG, 0xabcd);
-		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_COMMAND2, 0xff); /* set */
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_COMMAND2, 0xf0 << 8);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_X, fb->_Xmin);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_Y, fb->_Ymin);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_RECT_WIDTH,
@@ -120,7 +120,18 @@ static void glamoClear(GLcontext *ctx, GLbitfield mask)
 		                   fb->_Ymax-fb->_Ymin);
 		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_COMMAND3, 0);
 
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_PAT_FG, 0x1234);
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_X, fb->_Xmin+1);
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_DST_Y, fb->_Ymin+1);
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_RECT_WIDTH,
+		                   fb->_Xmax-fb->_Xmin-2);
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_RECT_HEIGHT,
+		                   fb->_Ymax-fb->_Ymin-2);
+		glamoDRMAddCommand(gCtx, GLAMO_REG_2D_COMMAND3, 0);
+
 	}
+
+	glamoDRMDispatch(gCtx);
 }
 
 
@@ -140,7 +151,31 @@ static void glamoShadeModel(GLcontext *ctx, GLenum mode)
 static void glamoViewport(GLcontext *ctx, GLint x, GLint y,
                           GLsizei width, GLsizei height )
 {
-	printf("glamoViewport\n"); fflush(stdout);
+	struct glamo_context *gCtx = GLAMO_CONTEXT(ctx);
+	__DRIcontext *driContext = gCtx->driContext;
+	void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
+			 GLsizei w, GLsizei h);
+
+	if ( !driContext->driScreenPriv->dri2.enabled ) return;
+
+	/* TODO: Flush before fiddling with fake front buffer */
+
+	if ( ctx->DrawBuffer->Name == 0 ) {
+
+		glamo_update_renderbuffers(driContext,
+		                           driContext->driDrawablePriv);
+		if ( driContext->driDrawablePriv
+		                              != driContext->driReadablePriv ) {
+			glamo_update_renderbuffers(driContext,
+				                   driContext->driReadablePriv);
+		}
+
+	}
+
+	old_viewport = ctx->Driver.Viewport;
+	ctx->Driver.Viewport = NULL;
+	gCtx->driDrawable = driContext->driDrawablePriv;
+	ctx->Driver.Viewport = old_viewport;
 }