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Add multiview to the opengl3 driver

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This commit is contained in:
David Snopek 2022-09-04 09:56:24 -05:00
parent a8c805be29
commit 398ee08375
24 changed files with 423 additions and 81 deletions
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41
drivers/gles3/shaders/scene.glsl
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@ -16,6 +16,7 @@ DISABLE_LIGHT_OMNI = false
DISABLE_LIGHT_SPOT = false
DISABLE_FOG = false
USE_RADIANCE_MAP = true
USE_MULTIVIEW = false
#[vertex]
@ -153,6 +154,15 @@ layout(std140) uniform SceneData { // ubo:2
}
scene_data;
#ifdef USE_MULTIVIEW
layout(std140) uniform MultiviewData { // ubo:8
highp mat4 projection_matrix_view[MAX_VIEWS];
highp mat4 inv_projection_matrix_view[MAX_VIEWS];
highp vec4 eye_offset[MAX_VIEWS];
}
multiview_data;
#endif
uniform highp mat4 world_transform;
#ifdef USE_LIGHTMAP
@ -250,8 +260,14 @@ void main() {
#if defined(OVERRIDE_POSITION)
highp vec4 position;
#endif
highp mat4 projection_matrix = scene_data.projection_matrix;
highp mat4 inv_projection_matrix = scene_data.inv_projection_matrix;
#ifdef USE_MULTIVIEW
mat4 projection_matrix = multiview_data.projection_matrix_view[ViewIndex];
mat4 inv_projection_matrix = multiview_data.inv_projection_matrix_view[ViewIndex];
#else
mat4 projection_matrix = scene_data.projection_matrix;
mat4 inv_projection_matrix = scene_data.inv_projection_matrix;
#endif //USE_MULTIVIEW
#ifdef USE_INSTANCING
vec4 instance_custom = vec4(unpackHalf2x16(instance_color_custom_data.z), unpackHalf2x16(instance_color_custom_data.w));
@ -339,7 +355,6 @@ void main() {
/* clang-format off */
#[fragment]
// Default to SPECULAR_SCHLICK_GGX.
#if !defined(SPECULAR_DISABLED) && !defined(SPECULAR_SCHLICK_GGX) && !defined(SPECULAR_TOON)
#define SPECULAR_SCHLICK_GGX
@ -463,6 +478,15 @@ layout(std140) uniform SceneData { // ubo:2
}
scene_data;
#ifdef USE_MULTIVIEW
layout(std140) uniform MultiviewData { // ubo:8
highp mat4 projection_matrix_view[MAX_VIEWS];
highp mat4 inv_projection_matrix_view[MAX_VIEWS];
highp vec4 eye_offset[MAX_VIEWS];
}
multiview_data;
#endif
/* clang-format off */
#GLOBALS
@ -530,8 +554,13 @@ uniform highp samplerCubeShadow positional_shadow; // texunit:-4
#endif // !defined(DISABLE_LIGHT_OMNI) && !defined(DISABLE_LIGHT_SPOT)
uniform highp sampler2D screen_texture; // texunit:-5
#ifdef USE_MULTIVIEW
uniform highp sampler2DArray depth_buffer; // texunit:-6
uniform highp sampler2DArray screen_texture; // texunit:-5
#else
uniform highp sampler2D depth_buffer; // texunit:-6
uniform highp sampler2D screen_texture; // texunit:-5
#endif
uniform highp mat4 world_transform;
uniform mediump float opaque_prepass_threshold;
@ -884,7 +913,11 @@ vec4 fog_process(vec3 vertex) {
void main() {
//lay out everything, whatever is unused is optimized away anyway
vec3 vertex = vertex_interp;
#ifdef USE_MULTIVIEW
vec3 view = -normalize(vertex_interp - multiview_data.eye_offset[ViewIndex].xyz);
#else
vec3 view = -normalize(vertex_interp);
#endif
vec3 albedo = vec3(1.0);
vec3 backlight = vec3(0.0);
vec4 transmittance_color = vec4(0.0, 0.0, 0.0, 1.0);