Commit: 6d8394d38b17e602535c75a866332f4427adbfad
Author: Campbell Barton
Date: Fri Jan 25 07:13:02 2019 +1100
Branches: master
https://developer.blender.org/rB6d8394d38b17e602535c75a866332f4427adbfad
DRW: support clipping for camera objects
===================================================================
M source/blender/draw/intern/DRW_render.h
M source/blender/draw/intern/draw_builtin_shader.c
M source/blender/draw/intern/draw_common.c
M source/blender/draw/intern/draw_common.h
M source/blender/draw/modes/object_mode.c
M source/blender/gpu/shaders/gpu_shader_instance_camera_vert.glsl
===================================================================
diff --git a/source/blender/draw/intern/DRW_render.h
b/source/blender/draw/intern/DRW_render.h
index 395d9483deb..884b35c4acb 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -94,16 +94,6 @@ typedef struct BoundSphere {
float center[3], radius;
} BoundSphere;
-/**
- * Support selecting shaders with different options compiled in.
- * Needed for clipping support because it means using a separate set of
shaders.
- */
-typedef enum eDRW_ShaderSlot {
- DRW_SHADER_SLOT_DEFAULT = 0,
- DRW_SHADER_SLOT_CLIPPED = 1,
-} eDRW_ShaderSlot;
-#define DRW_SHADER_SLOT_LEN 2
-
/* declare members as empty (unused) */
typedef char DRWViewportEmptyList;
diff --git a/source/blender/draw/intern/draw_builtin_shader.c
b/source/blender/draw/intern/draw_builtin_shader.c
index 5c0c005cb9d..6a70b91d67a 100644
--- a/source/blender/draw/intern/draw_builtin_shader.c
+++ b/source/blender/draw/intern/draw_builtin_shader.c
@@ -44,6 +44,8 @@ extern char datatoc_drw_shader_3D_smooth_color_vert_glsl[];
extern char datatoc_gpu_shader_uniform_color_frag_glsl[];
extern char datatoc_gpu_shader_3D_smooth_color_frag_glsl[];
extern char datatoc_gpu_shader_depth_only_frag_glsl[];
+extern char datatoc_gpu_shader_flat_color_frag_glsl[];
+extern char datatoc_gpu_shader_instance_camera_vert_glsl[];
/* cache of built-in shaders (each is created on first use) */
static struct {
@@ -88,6 +90,15 @@ static GPUShader
*drw_shader_get_builtin_shader_clipped(eGPUBuiltinShader shader
.frag = (const char
*[]){datatoc_gpu_shader_depth_only_frag_glsl, NULL},
.defs = (const char *[]){world_clip_def,
NULL}});
break;
+ case GPU_SHADER_CAMERA:
+ if (r_test_only) {
+ break;
+ }
+ shader = DRW_shader_create_from_arrays({
+ .vert = (const char *[]){world_clip_lib,
datatoc_gpu_shader_instance_camera_vert_glsl, NULL},
+ .frag = (const char
*[]){datatoc_gpu_shader_flat_color_frag_glsl, NULL},
+ .defs = (const char *[]){world_clip_def,
NULL}});
+ break;
default:
/* Unsupported, caller asserts. */
if (r_test_only) {
diff --git a/source/blender/draw/intern/draw_common.c
b/source/blender/draw/intern/draw_common.c
index 437e6f63095..e7a129071b6 100644
--- a/source/blender/draw/intern/draw_common.c
+++ b/source/blender/draw/intern/draw_common.c
@@ -38,6 +38,7 @@
#include "BKE_colorband.h"
#include "draw_common.h"
+#include "draw_builtin_shader.h"
#if 0
#define UI_COLOR_RGB_FROM_U8(r, g, b, v4) \
@@ -515,9 +516,9 @@ DRWShadingGroup *shgroup_instance_outline(DRWPass *pass,
struct GPUBatch *geom,
return grp;
}
-DRWShadingGroup *shgroup_camera_instance(DRWPass *pass, struct GPUBatch *geom)
+DRWShadingGroup *shgroup_camera_instance(DRWPass *pass, struct GPUBatch *geom,
eDRW_ShaderSlot shader_slot)
{
- GPUShader *sh_inst = GPU_shader_get_builtin_shader(GPU_SHADER_CAMERA);
+ GPUShader *sh_inst = DRW_shader_get_builtin_shader(GPU_SHADER_CAMERA,
shader_slot);
DRW_shgroup_instance_format(g_formats.instance_camera, {
{"color", DRW_ATTRIB_FLOAT, 3},
@@ -528,7 +529,9 @@ DRWShadingGroup *shgroup_camera_instance(DRWPass *pass,
struct GPUBatch *geom)
});
DRWShadingGroup *grp = DRW_shgroup_instance_create(sh_inst, pass, geom,
g_formats.instance_camera);
-
+ if (shader_slot == DRW_SHADER_SLOT_CLIPPED) {
+ DRW_shgroup_world_clip_planes_from_rv3d(grp,
DRW_context_state_get()->rv3d);
+ }
return grp;
}
diff --git a/source/blender/draw/intern/draw_common.h
b/source/blender/draw/intern/draw_common.h
index 854a8abbea9..2190db8bf31 100644
--- a/source/blender/draw/intern/draw_common.h
+++ b/source/blender/draw/intern/draw_common.h
@@ -39,6 +39,16 @@ struct ModifierData;
struct ParticleSystem;
struct PTCacheEdit;
+/**
+ * Support selecting shaders with different options compiled in.
+ * Needed for clipping support because it means using a separate set of
shaders.
+ */
+typedef enum eDRW_ShaderSlot {
+ DRW_SHADER_SLOT_DEFAULT = 0,
+ DRW_SHADER_SLOT_CLIPPED = 1,
+} eDRW_ShaderSlot;
+#define DRW_SHADER_SLOT_LEN 2
+
#define UBO_FIRST_COLOR colorWire
#define UBO_LAST_COLOR colorGridAxisZ
@@ -144,7 +154,7 @@ struct DRWShadingGroup *shgroup_instance_scaled(struct
DRWPass *pass, struct GPU
struct DRWShadingGroup *shgroup_instance(struct DRWPass *pass, struct GPUBatch
*geom);
struct DRWShadingGroup *shgroup_instance_alpha(struct DRWPass *pass, struct
GPUBatch *geom);
struct DRWShadingGroup *shgroup_instance_outline(struct DRWPass *pass, struct
GPUBatch *geom, int *baseid);
-struct DRWShadingGroup *shgroup_camera_instance(struct DRWPass *pass, struct
GPUBatch *geom);
+struct DRWShadingGroup *shgroup_camera_instance(struct DRWPass *pass, struct
GPUBatch *geom, eDRW_ShaderSlot shader_slot);
struct DRWShadingGroup *shgroup_distance_lines_instance(struct DRWPass *pass,
struct GPUBatch *geom);
struct DRWShadingGroup *shgroup_spot_instance(struct DRWPass *pass, struct
GPUBatch *geom);
struct DRWShadingGroup *shgroup_instance_mball_handles(struct DRWPass *pass);
diff --git a/source/blender/draw/modes/object_mode.c
b/source/blender/draw/modes/object_mode.c
index 0757403ad01..52a173e433f 100644
--- a/source/blender/draw/modes/object_mode.c
+++ b/source/blender/draw/modes/object_mode.c
@@ -1243,13 +1243,13 @@ static void OBJECT_cache_init(void *vedata)
/* Camera */
geom = DRW_cache_camera_get();
- sgl->camera = shgroup_camera_instance(sgl->non_meshes, geom);
+ sgl->camera = shgroup_camera_instance(sgl->non_meshes, geom,
draw_ctx->shader_slot);
geom = DRW_cache_camera_frame_get();
- sgl->camera_frame = shgroup_camera_instance(sgl->non_meshes,
geom);
+ sgl->camera_frame = shgroup_camera_instance(sgl->non_meshes,
geom, draw_ctx->shader_slot);
geom = DRW_cache_camera_tria_get();
- sgl->camera_tria = shgroup_camera_instance(sgl->non_meshes,
geom);
+ sgl->camera_tria = shgroup_camera_instance(sgl->non_meshes,
geom, draw_ctx->shader_slot);
geom = DRW_cache_plain_axes_get();
sgl->camera_focus = shgroup_instance(sgl->non_meshes, geom);
diff --git a/source/blender/gpu/shaders/gpu_shader_instance_camera_vert.glsl
b/source/blender/gpu/shaders/gpu_shader_instance_camera_vert.glsl
index 805ecd6085f..07328385838 100644
--- a/source/blender/gpu/shaders/gpu_shader_instance_camera_vert.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_instance_camera_vert.glsl
@@ -1,5 +1,8 @@
uniform mat4 ViewProjectionMatrix;
+#ifdef USE_WORLD_CLIP_PLANES
+uniform mat4 ModelMatrix;
+#endif
/* ---- Instantiated Attribs ---- */
in float pos;
@@ -47,4 +50,8 @@ void main()
gl_Position = ViewProjectionMatrix * InstanceModelMatrix * vec4(pPos,
1.0);
finalColor = vec4(color, 1.0);
+
+#ifdef USE_WORLD_CLIP_PLANES
+ world_clip_planes_calc_clip_distance((ModelMatrix * InstanceModelMatrix
* vec4(pPos, 1.0)).xyz);
+#endif
}
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