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DrawManager: Add support for writting to depth without depth testing. 

Disabling depth test will prevent from writting to depth buffer.
Add DRW_STATE_DEPTH_ALWAYS to always pass the depth test and write to depth.
This commit is contained in:
Clément Foucault 2017-06-22 18:53:36 +02:00
parent 5b2e596ce9
commit 06cc5e4994
2 changed files with 17 additions and 13 deletions
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25
source/blender/draw/intern/DRW_render.h
View File

@ -241,18 +241,19 @@ typedef enum {
DRW_STATE_DEPTH_LESS = (1 << 2),
DRW_STATE_DEPTH_EQUAL = (1 << 3),
DRW_STATE_DEPTH_GREATER = (1 << 4),
DRW_STATE_CULL_BACK = (1 << 5),
DRW_STATE_CULL_FRONT = (1 << 6),
DRW_STATE_WIRE = (1 << 7),
DRW_STATE_WIRE_LARGE = (1 << 8),
DRW_STATE_POINT = (1 << 9),
DRW_STATE_STIPPLE_2 = (1 << 10),
DRW_STATE_STIPPLE_3 = (1 << 11),
DRW_STATE_STIPPLE_4 = (1 << 12),
DRW_STATE_BLEND = (1 << 13),
DRW_STATE_ADDITIVE = (1 << 14),
DRW_STATE_MULTIPLY = (1 << 15),
DRW_STATE_CLIP_PLANES = (1 << 16),
DRW_STATE_DEPTH_ALWAYS = (1 << 5),
DRW_STATE_CULL_BACK = (1 << 6),
DRW_STATE_CULL_FRONT = (1 << 7),
DRW_STATE_WIRE = (1 << 8),
DRW_STATE_WIRE_LARGE = (1 << 9),
DRW_STATE_POINT = (1 << 10),
DRW_STATE_STIPPLE_2 = (1 << 11),
DRW_STATE_STIPPLE_3 = (1 << 12),
DRW_STATE_STIPPLE_4 = (1 << 13),
DRW_STATE_BLEND = (1 << 14),
DRW_STATE_ADDITIVE = (1 << 15),
DRW_STATE_MULTIPLY = (1 << 16),
DRW_STATE_CLIP_PLANES = (1 << 17),
DRW_STATE_WRITE_STENCIL_SELECT = (1 << 27),
DRW_STATE_WRITE_STENCIL_ACTIVE = (1 << 28),

5
source/blender/draw/intern/draw_manager.c
View File

@ -1340,7 +1340,7 @@ static void DRW_state_set(DRWState state)
{
DRWState test;
if (CHANGED_ANY_STORE_VAR(
DRW_STATE_DEPTH_LESS | DRW_STATE_DEPTH_EQUAL | DRW_STATE_DEPTH_GREATER,
DRW_STATE_DEPTH_LESS | DRW_STATE_DEPTH_EQUAL | DRW_STATE_DEPTH_GREATER | DRW_STATE_DEPTH_ALWAYS,
test))
{
if (test) {
@ -1355,6 +1355,9 @@ static void DRW_state_set(DRWState state)
else if (state & DRW_STATE_DEPTH_GREATER) {
glDepthFunc(GL_GREATER);
}
else if (state & DRW_STATE_DEPTH_ALWAYS) {
glDepthFunc(GL_ALWAYS);
}
else {
BLI_assert(0);
}