nouveau: add hw-dependent function to update modelview*projection matrix

7 files changed, 85 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index 1e13324b98..ae0a6d5c9e 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.c
@@ -210,6 +210,7 @@ GLboolean nouveauCreateContext( const __GLcontextModes *glVisual,
 	_swsetup_CreateContext( ctx );
 
 	_math_matrix_ctr(&nmesa->viewport);
+	_math_matrix_ctr(&nmesa->model_proj);
 
 	nouveauDDInitStateFuncs( ctx );
 	nouveauSpanInitFunctions( ctx );
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.h b/src/mesa/drivers/dri/nouveau/nouveau_context.h
index 778c4401e4..94d729daef 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.h
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.h
@@ -86,6 +86,9 @@ typedef struct nouveau_hw_func_t {
 				 nouveau_renderbuffer_t *depth);
 	/* Update anything that depends on the window position/size */
 	void      (*WindowMoved)(struct nouveau_context *);
+
+	/* Update projection matrix */
+	void	(*UpdateModelProjMatrix)(struct nouveau_context *);
 } nouveau_hw_func;
 
 typedef struct nouveau_context {
@@ -117,6 +120,9 @@ typedef struct nouveau_context {
 	GLuint color_offset;
 	GLuint specular_offset;
 
+	/* Projection*modelview matrix */
+	GLmatrix model_proj;
+
 	/* Vertex state */
 	GLuint vertex_size;
 	GLubyte *verts;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_state.c b/src/mesa/drivers/dri/nouveau/nouveau_state.c
index f618dcfc99..6c63b12c46 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_state.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_state.c
@@ -100,6 +100,16 @@ static void nouveauDepthRange(GLcontext *ctx, GLclampd near, GLclampd far)
     nouveauCalcViewport(ctx);
 }
 
+static void nouveauUpdateModelProjMatrix(GLcontext *ctx)
+{
+	nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
+
+	_math_matrix_mul_matrix(&(nmesa->model_proj), &(ctx->_ModelProjectMatrix),
+		ctx->ModelviewMatrixStack.Top);
+
+	nmesa->hw_func.UpdateModelProjMatrix(nmesa);
+}
+
 static void nouveauDDUpdateHWState(GLcontext *ctx)
 {
     nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
@@ -141,6 +151,13 @@ static void nouveauDDUpdateHWState(GLcontext *ctx)
 
 static void nouveauDDInvalidateState(GLcontext *ctx, GLuint new_state)
 {
+	if ( new_state & _NEW_PROJECTION ) {
+		nouveauUpdateModelProjMatrix(ctx);
+	}
+        if ( new_state & _NEW_MODELVIEW ) {
+		nouveauUpdateModelProjMatrix(ctx);
+	}
+
     _swrast_InvalidateState( ctx, new_state );
     _swsetup_InvalidateState( ctx, new_state );
     _vbo_InvalidateState( ctx, new_state );
diff --git a/src/mesa/drivers/dri/nouveau/nv10_state.c b/src/mesa/drivers/dri/nouveau/nv10_state.c
index 79d567b25d..9c63bd118a 100644
--- a/src/mesa/drivers/dri/nouveau/nv10_state.c
+++ b/src/mesa/drivers/dri/nouveau/nv10_state.c
@@ -750,6 +750,51 @@ static void nv10TextureMatrix(GLcontext *ctx, GLuint unit, const GLmatrix *mat)
         OUT_RING_CACHEp(mat->m, 16);
 }
 
+static void nv10UpdateModelProjMatrix(nouveauContextPtr nmesa)
+{
+	GLcontext *ctx = nmesa->glCtx;
+	GLfloat w = ((GLfloat) ctx->Viewport.Width) * 0.5;
+	GLfloat h = ((GLfloat) ctx->Viewport.Height) * 0.5;
+	GLfloat max_depth = (ctx->Viewport.Near + ctx->Viewport.Far) * 0.5;
+	GLfloat projection[16];
+	int i;
+
+	if (ctx->DrawBuffer) {
+		if (ctx->DrawBuffer->_DepthBuffer) {
+			switch (ctx->DrawBuffer->_DepthBuffer->DepthBits) {
+				case 16:
+					max_depth *= 32767.0;
+					break;
+				case 24:
+					max_depth *= 16777215.0;
+					break;
+			}
+		}
+	}
+
+	/* Rescale for viewport */
+	for (i=0; i<4; i++) {
+		projection[i] = w * nmesa->model_proj.m[i];
+	}
+	for (i=0; i<4; i++) {
+		projection[i+4] = -h * nmesa->model_proj.m[i+4];
+	}
+	for (i=0; i<4; i++) {
+		projection[i+8] = max_depth * nmesa->model_proj.m[i+8];
+	}
+	for (i=0; i<4; i++) {
+		projection[i+12] = nmesa->model_proj.m[i+12];
+	}
+
+	for (i=0; i<16; i++) {
+		printf("%d\t%.3f\t%.3f\n", i,
+			nmesa->model_proj.m[i], projection[i]);
+	}
+
+	BEGIN_RING_SIZE(NvSub3D, NV10_TCL_PRIMITIVE_3D_PROJECTION_MATRIX(0), 16);
+	OUT_RINGp(projection, 16);
+}
+
 /* Update anything that depends on the window position/size */
 static void nv10WindowMoved(nouveauContextPtr nmesa)
 {
@@ -1011,4 +1056,5 @@ void nv10InitStateFuncs(GLcontext *ctx, struct dd_function_table *func)
 	nmesa->hw_func.InitCard		= nv10InitCard;
 	nmesa->hw_func.BindBuffers	= nv10BindBuffers;
 	nmesa->hw_func.WindowMoved	= nv10WindowMoved;
+	nmesa->hw_func.UpdateModelProjMatrix = nv10UpdateModelProjMatrix;
 }
diff --git a/src/mesa/drivers/dri/nouveau/nv20_state.c b/src/mesa/drivers/dri/nouveau/nv20_state.c
index 6b583980a4..c6efa6b72c 100644
--- a/src/mesa/drivers/dri/nouveau/nv20_state.c
+++ b/src/mesa/drivers/dri/nouveau/nv20_state.c
@@ -636,6 +636,10 @@ static void nv20TextureMatrix(GLcontext *ctx, GLuint unit, const GLmatrix *mat)
         OUT_RING_CACHEp(mat->m, 16);
 }
 
+static void nv20UpdateModelProjMatrix(nouveauContextPtr nmesa)
+{
+}
+
 /* Update anything that depends on the window position/size */
 static void nv20WindowMoved(nouveauContextPtr nmesa)
 {
@@ -820,5 +824,6 @@ void nv20InitStateFuncs(GLcontext *ctx, struct dd_function_table *func)
 	nmesa->hw_func.InitCard		= nv20InitCard;
 	nmesa->hw_func.BindBuffers	= nv20BindBuffers;
 	nmesa->hw_func.WindowMoved	= nv20WindowMoved;
+	nmesa->hw_func.UpdateModelProjMatrix = nv20UpdateModelProjMatrix;
 }
 
diff --git a/src/mesa/drivers/dri/nouveau/nv30_state.c b/src/mesa/drivers/dri/nouveau/nv30_state.c
index cd3ee98688..ebd9e1c514 100644
--- a/src/mesa/drivers/dri/nouveau/nv30_state.c
+++ b/src/mesa/drivers/dri/nouveau/nv30_state.c
@@ -767,6 +767,10 @@ static void nv30TextureMatrix(GLcontext *ctx, GLuint unit, const GLmatrix *mat)
 	}
 }
 
+static void nv30UpdateModelProjMatrix(nouveauContextPtr nmesa)
+{
+}
+
 static void nv30WindowMoved(nouveauContextPtr nmesa)
 {
 	GLcontext *ctx = nmesa->glCtx;
@@ -998,5 +1002,6 @@ void nv30InitStateFuncs(GLcontext *ctx, struct dd_function_table *func)
 	   nmesa->hw_func.InitCard	= nv30InitCard;
 	nmesa->hw_func.BindBuffers	= nv30BindBuffers;
 	nmesa->hw_func.WindowMoved	= nv30WindowMoved;
+	nmesa->hw_func.UpdateModelProjMatrix = nv30UpdateModelProjMatrix;
 }
 
diff --git a/src/mesa/drivers/dri/nouveau/nv50_state.c b/src/mesa/drivers/dri/nouveau/nv50_state.c
index a9236f093c..66a18c4a15 100644
--- a/src/mesa/drivers/dri/nouveau/nv50_state.c
+++ b/src/mesa/drivers/dri/nouveau/nv50_state.c
@@ -520,6 +520,10 @@ static void nv50TextureMatrix(GLcontext *ctx, GLuint unit, const GLmatrix *mat)
 	/* Only with shaders */
 }
 
+static void nv50UpdateModelProjMatrix(nouveauContextPtr nmesa)
+{
+}
+
 static void nv50WindowMoved(nouveauContextPtr nmesa)
 {
 	GLcontext *ctx = nmesa->glCtx;
@@ -638,4 +642,5 @@ void nv50InitStateFuncs(GLcontext *ctx, struct dd_function_table *func)
 	nmesa->hw_func.InitCard		= nv50InitCard;
 	nmesa->hw_func.BindBuffers	= nv50BindBuffers;
 	nmesa->hw_func.WindowMoved	= nv50WindowMoved;
+	nmesa->hw_func.UpdateModelProjMatrix = nv50UpdateModelProjMatrix;
 }