From 707c8c1e95d8db2d84909e7957b4dc9138e05599 Mon Sep 17 00:00:00 2001 From: Vitaliy Date: Sun, 25 Oct 2020 20:01:03 +0300 Subject: Shaders for Android (GLES 2) (#10506) Shader support for OpenGL ES 2 devices (Android) Co-authored-by: sfan5 --- client/shaders/nodes_shader/opengl_fragment.glsl | 13 ++++---- client/shaders/nodes_shader/opengl_vertex.glsl | 42 ++++++++++++------------ 2 files changed, 28 insertions(+), 27 deletions(-) (limited to 'client/shaders/nodes_shader') diff --git a/client/shaders/nodes_shader/opengl_fragment.glsl b/client/shaders/nodes_shader/opengl_fragment.glsl index 36d47d1f5..82c87073a 100644 --- a/client/shaders/nodes_shader/opengl_fragment.glsl +++ b/client/shaders/nodes_shader/opengl_fragment.glsl @@ -15,11 +15,12 @@ varying vec3 vPosition; // cameraOffset + worldPosition (for large coordinates the limits of float // precision must be considered). varying vec3 worldPosition; - +varying lowp vec4 varColor; +varying mediump vec2 varTexCoord; varying vec3 eyeVec; const float fogStart = FOG_START; -const float fogShadingParameter = 1 / ( 1 - fogStart); +const float fogShadingParameter = 1.0 / ( 1.0 - fogStart); #ifdef ENABLE_TONE_MAPPING @@ -56,13 +57,13 @@ vec4 applyToneMapping(vec4 color) void main(void) { vec3 color; - vec2 uv = gl_TexCoord[0].st; + vec2 uv = varTexCoord.st; vec4 base = texture2D(baseTexture, uv).rgba; - #ifdef USE_DISCARD // If alpha is zero, we can just discard the pixel. This fixes transparency - // on GPUs like GC7000L, where GL_ALPHA_TEST is not implemented in mesa. + // on GPUs like GC7000L, where GL_ALPHA_TEST is not implemented in mesa, + // and also on GLES 2, where GL_ALPHA_TEST is missing entirely. if (base.a == 0.0) { discard; } @@ -70,7 +71,7 @@ void main(void) color = base.rgb; - vec4 col = vec4(color.rgb * gl_Color.rgb, 1.0); + vec4 col = vec4(color.rgb * varColor.rgb, 1.0); #ifdef ENABLE_TONE_MAPPING col = applyToneMapping(col); diff --git a/client/shaders/nodes_shader/opengl_vertex.glsl b/client/shaders/nodes_shader/opengl_vertex.glsl index 56bff09a8..cb344f6e6 100644 --- a/client/shaders/nodes_shader/opengl_vertex.glsl +++ b/client/shaders/nodes_shader/opengl_vertex.glsl @@ -1,4 +1,3 @@ -uniform mat4 mWorldViewProj; uniform mat4 mWorld; // Color of the light emitted by the sun. @@ -16,7 +15,8 @@ varying vec3 vPosition; // cameraOffset + worldPosition (for large coordinates the limits of float // precision must be considered). varying vec3 worldPosition; - +varying lowp vec4 varColor; +varying mediump vec2 varTexCoord; varying vec3 eyeVec; // Color of the light emitted by the light sources. @@ -81,13 +81,13 @@ float snoise(vec3 p) void main(void) { - gl_TexCoord[0] = gl_MultiTexCoord0; + varTexCoord = inTexCoord0.st; float disp_x; float disp_z; // OpenGL < 4.3 does not support continued preprocessor lines #if (MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES) || (MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS) - vec4 pos2 = mWorld * gl_Vertex; + vec4 pos2 = mWorld * inVertexPosition; float tOffset = (pos2.x + pos2.y) * 0.001 + pos2.z * 0.002; disp_x = (smoothTriangleWave(animationTimer * 23.0 + tOffset) + smoothTriangleWave(animationTimer * 11.0 + tOffset)) * 0.4; @@ -96,43 +96,43 @@ void main(void) smoothTriangleWave(animationTimer * 13.0 + tOffset)) * 0.5; #endif - worldPosition = (mWorld * gl_Vertex).xyz; + worldPosition = (mWorld * inVertexPosition).xyz; // OpenGL < 4.3 does not support continued preprocessor lines #if (MATERIAL_TYPE == TILE_MATERIAL_WAVING_LIQUID_TRANSPARENT || MATERIAL_TYPE == TILE_MATERIAL_WAVING_LIQUID_OPAQUE || MATERIAL_TYPE == TILE_MATERIAL_WAVING_LIQUID_BASIC) && ENABLE_WAVING_WATER // Generate waves with Perlin-type noise. // The constants are calibrated such that they roughly // correspond to the old sine waves. - vec4 pos = gl_Vertex; + vec4 pos = inVertexPosition; vec3 wavePos = worldPosition + cameraOffset; // The waves are slightly compressed along the z-axis to get // wave-fronts along the x-axis. - wavePos.x /= WATER_WAVE_LENGTH * 3; - wavePos.z /= WATER_WAVE_LENGTH * 2; - wavePos.z += animationTimer * WATER_WAVE_SPEED * 10; - pos.y += (snoise(wavePos) - 1) * WATER_WAVE_HEIGHT * 5; + wavePos.x /= WATER_WAVE_LENGTH * 3.0; + wavePos.z /= WATER_WAVE_LENGTH * 2.0; + wavePos.z += animationTimer * WATER_WAVE_SPEED * 10.0; + pos.y += (snoise(wavePos) - 1.0) * WATER_WAVE_HEIGHT * 5.0; gl_Position = mWorldViewProj * pos; #elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_LEAVES && ENABLE_WAVING_LEAVES - vec4 pos = gl_Vertex; + vec4 pos = inVertexPosition; pos.x += disp_x; pos.y += disp_z * 0.1; pos.z += disp_z; gl_Position = mWorldViewProj * pos; #elif MATERIAL_TYPE == TILE_MATERIAL_WAVING_PLANTS && ENABLE_WAVING_PLANTS - vec4 pos = gl_Vertex; - if (gl_TexCoord[0].y < 0.05) { + vec4 pos = inVertexPosition; + if (varTexCoord.y < 0.05) { pos.x += disp_x; pos.z += disp_z; } gl_Position = mWorldViewProj * pos; #else - gl_Position = mWorldViewProj * gl_Vertex; + gl_Position = mWorldViewProj * inVertexPosition; #endif vPosition = gl_Position.xyz; - eyeVec = -(gl_ModelViewMatrix * gl_Vertex).xyz; + eyeVec = -(mWorldView * inVertexPosition).xyz; // Calculate color. // Red, green and blue components are pre-multiplied with @@ -141,16 +141,16 @@ void main(void) // The pre-baked colors are halved to prevent overflow. vec4 color; // The alpha gives the ratio of sunlight in the incoming light. - float nightRatio = 1 - gl_Color.a; - color.rgb = gl_Color.rgb * (gl_Color.a * dayLight.rgb + - nightRatio * artificialLight.rgb) * 2; - color.a = 1; + float nightRatio = 1.0 - inVertexColor.a; + color.rgb = inVertexColor.rgb * (inVertexColor.a * dayLight.rgb + + nightRatio * artificialLight.rgb) * 2.0; + color.a = 1.0; // Emphase blue a bit in darker places // See C++ implementation in mapblock_mesh.cpp final_color_blend() - float brightness = (color.r + color.g + color.b) / 3; + float brightness = (color.r + color.g + color.b) / 3.0; color.b += max(0.0, 0.021 - abs(0.2 * brightness - 0.021) + 0.07 * brightness); - gl_FrontColor = gl_BackColor = clamp(color, 0.0, 1.0); + varColor = clamp(color, 0.0, 1.0); } -- cgit v1.2.3