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authorBrian <brian.paul@tungstengraphics.com>2007-11-29 08:12:33 -0700
committerBrian <brian.paul@tungstengraphics.com>2007-11-29 08:13:16 -0700
commit61fbc816570820757afdbc3cd04cd475b337ad4f (patch)
tree3ea8b8bfab2f4d3d0247f2492ccc8b5741f24dbf
parenta2ab143b751b85ecb6b9807982ef6dab254f4b93 (diff)
New ctx->Driver.Map/UnmapTexture() functions for accessing textures from t_vb_program.c
-rw-r--r--src/mesa/drivers/common/driverfuncs.c2
-rw-r--r--src/mesa/main/config.h2
-rw-r--r--src/mesa/main/dd.h5
-rw-r--r--src/mesa/tnl/t_vb_program.c48
4 files changed, 56 insertions, 1 deletions
diff --git a/src/mesa/drivers/common/driverfuncs.c b/src/mesa/drivers/common/driverfuncs.c
index 1e7c279875..03fbab69e3 100644
--- a/src/mesa/drivers/common/driverfuncs.c
+++ b/src/mesa/drivers/common/driverfuncs.c
@@ -112,6 +112,8 @@ _mesa_init_driver_functions(struct dd_function_table *driver)
driver->DeleteTexture = _mesa_delete_texture_object;
driver->NewTextureImage = _mesa_new_texture_image;
driver->FreeTexImageData = _mesa_free_texture_image_data;
+ driver->MapTexture = NULL;
+ driver->UnmapTexture = NULL;
driver->TextureMemCpy = _mesa_memcpy;
driver->IsTextureResident = NULL;
driver->PrioritizeTexture = NULL;
diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h
index 8eb02beb4c..ab0f035b45 100644
--- a/src/mesa/main/config.h
+++ b/src/mesa/main/config.h
@@ -213,7 +213,7 @@
/** For GL_ARB_vertex_shader */
/*@{*/
#define MAX_VERTEX_ATTRIBS 16
-#define MAX_VERTEX_TEXTURE_IMAGE_UNITS 0
+#define MAX_VERTEX_TEXTURE_IMAGE_UNITS MAX_TEXTURE_UNITS
#define MAX_COMBINED_TEXTURE_IMAGE_UNITS (MAX_TEXTURE_IMAGE_UNITS + MAX_VERTEX_TEXTURE_IMAGE_UNITS)
/*@}*/
diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index caa50dd682..77d27bb03d 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -493,6 +493,11 @@ struct dd_function_table {
*/
void (*FreeTexImageData)( GLcontext *ctx, struct gl_texture_image *tImage );
+ /** Map texture image data into user space */
+ void (*MapTexture)( GLcontext *ctx, struct gl_texture_object *tObj );
+ /** Unmap texture images from user space */
+ void (*UnmapTexture)( GLcontext *ctx, struct gl_texture_object *tObj );
+
/**
* Note: no context argument. This function doesn't initially look
* like it belongs here, except that the driver is the only entity
diff --git a/src/mesa/tnl/t_vb_program.c b/src/mesa/tnl/t_vb_program.c
index cd49e9baf0..addaf76127 100644
--- a/src/mesa/tnl/t_vb_program.c
+++ b/src/mesa/tnl/t_vb_program.c
@@ -246,6 +246,50 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine)
/**
+ * Map the texture images which the vertex program will access (if any).
+ */
+static void
+map_textures(GLcontext *ctx, const struct gl_vertex_program *vp)
+{
+ GLuint u;
+
+ if (!ctx->Driver.MapTexture)
+ return;
+
+ for (u = 0; u < ctx->Const.MaxVertexTextureImageUnits; u++) {
+ if (vp->Base.TexturesUsed[u]) {
+ /* Note: _Current *should* correspond to the target indicated
+ * in TexturesUsed[u].
+ */
+ ctx->Driver.MapTexture(ctx, ctx->Texture.Unit[u]._Current);
+ }
+ }
+}
+
+
+/**
+ * Unmap the texture images which were used by the vertex program (if any).
+ */
+static void
+unmap_textures(GLcontext *ctx, const struct gl_vertex_program *vp)
+{
+ GLuint u;
+
+ if (!ctx->Driver.MapTexture)
+ return;
+
+ for (u = 0; u < ctx->Const.MaxVertexTextureImageUnits; u++) {
+ if (vp->Base.TexturesUsed[u]) {
+ /* Note: _Current *should* correspond to the target indicated
+ * in TexturesUsed[u].
+ */
+ ctx->Driver.UnmapTexture(ctx, ctx->Texture.Unit[u]._Current);
+ }
+ }
+}
+
+
+/**
* This function executes vertex programs
*/
static GLboolean
@@ -278,6 +322,8 @@ run_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage )
}
}
+ map_textures(ctx, program);
+
for (i = 0; i < VB->Count; i++) {
GLuint attr;
@@ -329,6 +375,8 @@ run_vp( GLcontext *ctx, struct tnl_pipeline_stage *stage )
#endif
}
+ unmap_textures(ctx, program);
+
/* Fixup fog and point size results if needed */
if (program->IsNVProgram) {
if (ctx->Fog.Enabled &&