From 398ee08375e1acc2354dcb8b9edbf2902a59fcf1 Mon Sep 17 00:00:00 2001 From: David Snopek Date: Sun, 4 Sep 2022 09:56:24 -0500 Subject: Add multiview to the opengl3 driver --- drivers/gles3/shaders/scene.glsl | 41 ++++++++++++++++++++++++++++++++++---- drivers/gles3/shaders/tonemap.glsl | 20 +++++++++++++++++++ 2 files changed, 57 insertions(+), 4 deletions(-) (limited to 'drivers/gles3/shaders') diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl index efd6036ba9..2bd93796bd 100644 --- a/drivers/gles3/shaders/scene.glsl +++ b/drivers/gles3/shaders/scene.glsl @@ -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); diff --git a/drivers/gles3/shaders/tonemap.glsl b/drivers/gles3/shaders/tonemap.glsl index a478cf9170..0b769e77f2 100644 --- a/drivers/gles3/shaders/tonemap.glsl +++ b/drivers/gles3/shaders/tonemap.glsl @@ -44,7 +44,11 @@ in vec2 uv_interp; layout(location = 0) out vec4 frag_color; +#ifdef USE_MULTIVIEW +uniform highp sampler2DArray source; //texunit:0 +#else uniform highp sampler2D source; //texunit:0 +#endif #if defined(USE_GLOW_LEVEL1) || defined(USE_GLOW_LEVEL2) || defined(USE_GLOW_LEVEL3) || defined(USE_GLOW_LEVEL4) || defined(USE_GLOW_LEVEL5) || defined(USE_GLOW_LEVEL6) || defined(USE_GLOW_LEVEL7) #define USING_GLOW // only use glow when at least one glow level is selected @@ -191,10 +195,17 @@ vec3 apply_fxaa(vec3 color, vec2 uv_interp, vec2 pixel_size) { const float FXAA_REDUCE_MUL = (1.0 / 8.0); const float FXAA_SPAN_MAX = 8.0; +#ifdef USE_MULTIVIEW + vec3 rgbNW = textureLod(source, vec3(uv_interp + vec2(-1.0, -1.0) * pixel_size, ViewIndex), 0.0).xyz; + vec3 rgbNE = textureLod(source, vec3(uv_interp + vec2(1.0, -1.0) * pixel_size, ViewIndex), 0.0).xyz; + vec3 rgbSW = textureLod(source, vec3(uv_interp + vec2(-1.0, 1.0) * pixel_size, ViewIndex), 0.0).xyz; + vec3 rgbSE = textureLod(source, vec3(uv_interp + vec2(1.0, 1.0) * pixel_size, ViewIndex), 0.0).xyz; +#else vec3 rgbNW = textureLod(source, uv_interp + vec2(-1.0, -1.0) * pixel_size, 0.0).xyz; vec3 rgbNE = textureLod(source, uv_interp + vec2(1.0, -1.0) * pixel_size, 0.0).xyz; vec3 rgbSW = textureLod(source, uv_interp + vec2(-1.0, 1.0) * pixel_size, 0.0).xyz; vec3 rgbSE = textureLod(source, uv_interp + vec2(1.0, 1.0) * pixel_size, 0.0).xyz; +#endif vec3 rgbM = color; vec3 luma = vec3(0.299, 0.587, 0.114); float lumaNW = dot(rgbNW, luma); @@ -219,8 +230,13 @@ vec3 apply_fxaa(vec3 color, vec2 uv_interp, vec2 pixel_size) { dir * rcpDirMin)) * pixel_size; +#ifdef USE_MULTIVIEW + vec3 rgbA = 0.5 * (textureLod(source, vec3(uv_interp + dir * (1.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz + textureLod(source, vec3(uv_interp + dir * (2.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz); + vec3 rgbB = rgbA * 0.5 + 0.25 * (textureLod(source, vec3(uv_interp + dir * -0.5, ViewIndex), 0.0).xyz + textureLod(source, vec3(uv_interp + dir * 0.5, ViewIndex), 0.0).xyz); +#else vec3 rgbA = 0.5 * (textureLod(source, uv_interp + dir * (1.0 / 3.0 - 0.5), 0.0).xyz + textureLod(source, uv_interp + dir * (2.0 / 3.0 - 0.5), 0.0).xyz); vec3 rgbB = rgbA * 0.5 + 0.25 * (textureLod(source, uv_interp + dir * -0.5, 0.0).xyz + textureLod(source, uv_interp + dir * 0.5, 0.0).xyz); +#endif float lumaB = dot(rgbB, luma); if ((lumaB < lumaMin) || (lumaB > lumaMax)) { @@ -231,7 +247,11 @@ vec3 apply_fxaa(vec3 color, vec2 uv_interp, vec2 pixel_size) { } void main() { +#ifdef USE_MULTIVIEW + vec4 color = textureLod(source, vec3(uv_interp, ViewIndex), 0.0); +#else vec4 color = textureLod(source, uv_interp, 0.0); +#endif #ifdef USE_FXAA color.rgb = apply_fxaa(color.rgb, uv_interp, pixel_size); -- cgit v1.2.3