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Merge pull request #18677 from BastiaanOlij/add_no_blend

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Add no-blend canvas item render_mode
This commit is contained in:
Juan Linietsky 2018-05-07 09:44:17 -03:00 committed by GitHub
commit 35322c0678
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 31 additions and 2 deletions
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3
doc/classes/CanvasItemMaterial.xml
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@ -36,6 +36,9 @@
<constant name="BLEND_MODE_PREMULT_ALPHA" value="4" enum="BlendMode">
Mix blending mode. Colors are assumed to be premultiplied by the alpha (opacity) value.
</constant>
<constant name="BLEND_MODE_DISABLED" value="5" enum="BlendMode">
Disable blending mode. Colors including alpha are written as is. Only applicable for render targets with a transparent background. No lighting will be applied.
</constant>
<constant name="LIGHT_MODE_NORMAL" value="0" enum="LightMode">
Render the material using both light and non-light sensitive material properties.
</constant>

19
drivers/gles3/rasterizer_canvas_gles3.cpp
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@ -1210,6 +1210,9 @@ void RasterizerCanvasGLES3::canvas_render_items(Item *p_item_list, int p_z, cons
if (shader_ptr->canvas_item.uses_screen_texture && !state.canvas_texscreen_used) {
//copy if not copied before
_copy_texscreen(Rect2());
// blend mode will have been enabled so make sure we disable it again later on
last_blend_mode = last_blend_mode != RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_DISABLED ? last_blend_mode : -1;
}
if (shader_ptr != shader_cache) {
@ -1281,14 +1284,30 @@ void RasterizerCanvasGLES3::canvas_render_items(Item *p_item_list, int p_z, cons
}
int blend_mode = shader_cache ? shader_cache->canvas_item.blend_mode : RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_MIX;
if (blend_mode == RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_DISABLED && (!storage->frame.current_rt || !storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_TRANSPARENT])) {
blend_mode = RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_MIX;
}
bool unshaded = shader_cache && (shader_cache->canvas_item.light_mode == RasterizerStorageGLES3::Shader::CanvasItem::LIGHT_MODE_UNSHADED || blend_mode != RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_MIX);
bool reclip = false;
if (last_blend_mode != blend_mode) {
if (last_blend_mode == RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_DISABLED) {
// re-enable it
glEnable(GL_BLEND);
} else if (blend_mode == RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_DISABLED) {
// disable it
glDisable(GL_BLEND);
}
switch (blend_mode) {
case RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_DISABLED: {
// nothing to do here
} break;
case RasterizerStorageGLES3::Shader::CanvasItem::BLEND_MODE_MIX: {
glBlendEquation(GL_FUNC_ADD);
if (storage->frame.current_rt && storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_TRANSPARENT]) {
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

1
drivers/gles3/rasterizer_storage_gles3.cpp
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@ -1615,6 +1615,7 @@ void RasterizerStorageGLES3::_update_shader(Shader *p_shader) const {
shaders.actions_canvas.render_mode_values["blend_sub"] = Pair<int *, int>(&p_shader->canvas_item.blend_mode, Shader::CanvasItem::BLEND_MODE_SUB);
shaders.actions_canvas.render_mode_values["blend_mul"] = Pair<int *, int>(&p_shader->canvas_item.blend_mode, Shader::CanvasItem::BLEND_MODE_MUL);
shaders.actions_canvas.render_mode_values["blend_premul_alpha"] = Pair<int *, int>(&p_shader->canvas_item.blend_mode, Shader::CanvasItem::BLEND_MODE_PMALPHA);
shaders.actions_canvas.render_mode_values["blend_disabled"] = Pair<int *, int>(&p_shader->canvas_item.blend_mode, Shader::CanvasItem::BLEND_MODE_DISABLED);
shaders.actions_canvas.render_mode_values["unshaded"] = Pair<int *, int>(&p_shader->canvas_item.light_mode, Shader::CanvasItem::LIGHT_MODE_UNSHADED);
shaders.actions_canvas.render_mode_values["light_only"] = Pair<int *, int>(&p_shader->canvas_item.light_mode, Shader::CanvasItem::LIGHT_MODE_LIGHT_ONLY);

1
drivers/gles3/rasterizer_storage_gles3.h
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@ -420,6 +420,7 @@ public:
BLEND_MODE_SUB,
BLEND_MODE_MUL,
BLEND_MODE_PMALPHA,
BLEND_MODE_DISABLED,
};
int blend_mode;

2
scene/2d/canvas_item.cpp
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@ -94,6 +94,7 @@ void CanvasItemMaterial::_update_shader() {
case BLEND_MODE_SUB: code += "blend_sub"; break;
case BLEND_MODE_MUL: code += "blend_mul"; break;
case BLEND_MODE_PREMULT_ALPHA: code += "blend_premul_alpha"; break;
case BLEND_MODE_DISABLED: code += "blend_disabled"; break;
}
switch (light_mode) {
@ -1105,6 +1106,7 @@ void CanvasItem::_bind_methods() {
BIND_ENUM_CONSTANT(BLEND_MODE_SUB);
BIND_ENUM_CONSTANT(BLEND_MODE_MUL);
BIND_ENUM_CONSTANT(BLEND_MODE_PREMULT_ALPHA);
BIND_ENUM_CONSTANT(BLEND_MODE_DISABLED);
BIND_CONSTANT(NOTIFICATION_TRANSFORM_CHANGED);
BIND_CONSTANT(NOTIFICATION_DRAW);

6
scene/2d/canvas_item.h
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@ -54,7 +54,8 @@ public:
BLEND_MODE_ADD,
BLEND_MODE_SUB,
BLEND_MODE_MUL,
BLEND_MODE_PREMULT_ALPHA
BLEND_MODE_PREMULT_ALPHA,
BLEND_MODE_DISABLED
};
enum LightMode {
@ -145,7 +146,8 @@ public:
BLEND_MODE_ADD,
BLEND_MODE_SUB,
BLEND_MODE_MUL,
BLEND_MODE_PREMULT_ALPHA
BLEND_MODE_PREMULT_ALPHA,
BLEND_MODE_DISABLED
};
private:

1
servers/visual/shader_types.cpp
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@ -231,6 +231,7 @@ ShaderTypes::ShaderTypes() {
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("blend_sub");
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("blend_mul");
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("blend_premul_alpha");
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("blend_disabled");
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("unshaded");
shader_modes[VS::SHADER_CANVAS_ITEM].modes.insert("light_only");