summaryrefslogtreecommitdiffstats
path: root/gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc')
-rw-r--r--gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc1218
1 files changed, 1218 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc b/gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc
new file mode 100644
index 0000000000..1c1ff51927
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/GLES1Shaders.inc
@@ -0,0 +1,1218 @@
+//
+// Copyright 2018 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// GLES1Shaders.inc: Defines GLES1 emulation shader.
+
+// The following variables are added in GLES1Renderer::initializeRendererProgram
+// bool clip_plane_enables
+// bool enable_alpha_test
+// bool enable_clip_planes
+// bool enable_color_material
+// bool enable_draw_texture
+// bool enable_fog
+// bool enable_lighting
+// bool enable_normalize
+// bool enable_rescale_normal
+// bool enable_texture_2d[kMaxTexUnits]
+// bool enable_texture_cube_map[kMaxTexUnits]
+// bool light_enables[kMaxLights]
+// bool light_model_two_sided
+// bool point_rasterization
+// bool point_sprite_coord_replace
+// bool point_sprite_enabled
+// bool shade_model_flat
+// int texture_format[kMaxTexUnits];
+// int texture_env_mode[kMaxTexUnits];
+// int combine_rgb[kMaxTexUnits];
+// int combine_alpha[kMaxTexUnits];
+// int src0_rgb[kMaxTexUnits];
+// int src0_alpha[kMaxTexUnits];
+// int src1_rgb[kMaxTexUnits];
+// int src1_alpha[kMaxTexUnits];
+// int src2_rgb[kMaxTexUnits];
+// int src2_alpha[kMaxTexUnits];
+// int op0_rgb[kMaxTexUnits];
+// int op0_alpha[kMaxTexUnits];
+// int op1_rgb[kMaxTexUnits];
+// int op1_alpha[kMaxTexUnits];
+// int op2_rgb[kMaxTexUnits];
+// int op2_alpha[kMaxTexUnits];
+// int alpha_func;
+// int fog_mode;
+
+constexpr char kGLES1DrawVShaderHeader[] = R"(#version 300 es
+precision highp float;
+
+#define kMaxTexUnits 4
+#define kMaxLights 8
+)";
+
+constexpr char kGLES1DrawVShader[] = R"(
+
+in vec4 pos;
+in vec3 normal;
+in vec4 color;
+in float pointsize;
+in vec4 texcoord0;
+in vec4 texcoord1;
+in vec4 texcoord2;
+in vec4 texcoord3;
+
+uniform mat4 projection;
+uniform mat4 modelview;
+uniform mat4 modelview_invtr;
+uniform mat4 texture_matrix[kMaxTexUnits];
+
+// Point rasterization//////////////////////////////////////////////////////////
+
+uniform float point_size_min;
+uniform float point_size_max;
+uniform vec3 point_distance_attenuation;
+
+// Shading: flat shading, lighting, and materials///////////////////////////////
+
+uniform vec4 material_ambient;
+uniform vec4 material_diffuse;
+uniform vec4 material_specular;
+uniform vec4 material_emissive;
+uniform float material_specular_exponent;
+
+uniform vec4 light_model_scene_ambient;
+
+uniform vec4 light_ambients[kMaxLights];
+uniform vec4 light_diffuses[kMaxLights];
+uniform vec4 light_speculars[kMaxLights];
+uniform vec4 light_positions[kMaxLights];
+uniform vec3 light_directions[kMaxLights];
+uniform float light_spotlight_exponents[kMaxLights];
+uniform float light_spotlight_cutoff_angles[kMaxLights];
+uniform float light_attenuation_consts[kMaxLights];
+uniform float light_attenuation_linears[kMaxLights];
+uniform float light_attenuation_quadratics[kMaxLights];
+
+// GL_OES_draw_texture uniforms/////////////////////////////////////////////////
+
+uniform vec4 draw_texture_coords;
+uniform vec2 draw_texture_dims;
+uniform vec4 draw_texture_normalized_crop_rect[kMaxTexUnits];
+
+// Varyings/////////////////////////////////////////////////////////////////////
+
+out vec4 pos_varying;
+out vec3 normal_varying;
+out vec4 color_varying;
+flat out vec4 color_varying_flat;
+out vec4 texcoord0_varying;
+out vec4 texcoord1_varying;
+out vec4 texcoord2_varying;
+out vec4 texcoord3_varying;
+
+float posDot(vec3 a, vec3 b)
+{
+ return max(dot(a, b), 0.0);
+}
+
+vec4 doLighting(vec4 vertexColor)
+{
+ vec4 materialAmbientActual = material_ambient;
+ vec4 materialDiffuseActual = material_diffuse;
+
+ if (enable_color_material)
+ {
+ materialAmbientActual = vertexColor;
+ materialDiffuseActual = vertexColor;
+ }
+
+ vec4 lightingResult = material_emissive + materialAmbientActual * light_model_scene_ambient;
+
+ for (int i = 0; i < kMaxLights; i++)
+ {
+
+ if (!light_enables[i])
+ continue;
+
+ vec4 lightAmbient = light_ambients[i];
+ vec4 lightDiffuse = light_diffuses[i];
+ vec4 lightSpecular = light_speculars[i];
+ vec4 lightPos = light_positions[i];
+ vec3 lightDir = light_directions[i];
+ float attConst = light_attenuation_consts[i];
+ float attLinear = light_attenuation_linears[i];
+ float attQuadratic = light_attenuation_quadratics[i];
+ float spotAngle = light_spotlight_cutoff_angles[i];
+ float spotExponent = light_spotlight_exponents[i];
+
+ vec3 toLight;
+ if (lightPos.w == 0.0)
+ {
+ toLight = lightPos.xyz;
+ }
+ else
+ {
+ toLight = (lightPos.xyz / lightPos.w - pos_varying.xyz);
+ }
+
+ float lightDist = length(toLight);
+ vec3 h = normalize(toLight) + vec3(0.0, 0.0, 1.0);
+ float ndotL = posDot(normal_varying, normalize(toLight));
+ float ndoth = posDot(normal_varying, normalize(h));
+
+ float specAtt;
+
+ if (ndotL != 0.0)
+ {
+ specAtt = 1.0;
+ }
+ else
+ {
+ specAtt = 0.0;
+ }
+
+ float att;
+
+ if (lightPos.w != 0.0)
+ {
+ float attDenom =
+ (attConst + attLinear * lightDist + attQuadratic * lightDist * lightDist);
+ att = 1.0 / attDenom;
+ }
+ else
+ {
+ att = 1.0;
+ }
+
+ float spot;
+
+ float spotAngleCos = cos(radians(spotAngle));
+ vec3 toSurfaceDir = -normalize(toLight);
+ float spotDot = posDot(toSurfaceDir, normalize(lightDir));
+
+ if (spotAngle == 180.0 || lightPos.w == 0.0)
+ {
+ spot = 1.0;
+ }
+ else
+ {
+ if (spotDot < spotAngleCos)
+ {
+ spot = 0.0;
+ }
+ else
+ {
+ spot = pow(spotDot, spotExponent);
+ }
+ }
+
+ vec4 contrib = materialAmbientActual * lightAmbient;
+ contrib += ndotL * materialDiffuseActual * lightDiffuse;
+ if (ndoth > 0.0 && material_specular_exponent > 0.0)
+ {
+ contrib += specAtt * pow(ndoth, material_specular_exponent) * material_specular *
+ lightSpecular;
+ }
+ else
+ {
+ if (ndoth > 0.0)
+ {
+ contrib += specAtt * material_specular * lightSpecular;
+ }
+ }
+ contrib *= att * spot;
+ lightingResult += contrib;
+ }
+
+ return lightingResult;
+}
+
+const vec4 drawTextureVertices[6] = vec4[](
+ vec4(0.0, 0.0, 0.0, 1.0),
+ vec4(1.0, 0.0, 0.0, 1.0),
+ vec4(1.0, 1.0, 0.0, 1.0),
+ vec4(0.0, 0.0, 0.0, 1.0),
+ vec4(1.0, 1.0, 0.0, 1.0),
+ vec4(0.0, 1.0, 0.0, 1.0));
+
+vec4 drawTexturePosition(int vertexId)
+{
+
+ float drawTexX = draw_texture_coords[0];
+ float drawTexY = draw_texture_coords[1];
+ float drawTexZ = draw_texture_coords[2];
+ float drawTexW = draw_texture_dims[0];
+ float drawTexH = draw_texture_dims[1];
+
+ return vec4(drawTexX, drawTexY, drawTexZ, 0.0) +
+ drawTextureVertices[vertexId] *
+ vec4(drawTexW, drawTexH, 1.0, 1.0);
+}
+
+vec4 drawTextureTexCoord(int vertexId, int textureUnit)
+{
+ float texCropU = draw_texture_normalized_crop_rect[textureUnit].x;
+ float texCropV = draw_texture_normalized_crop_rect[textureUnit].y;
+ float texCropW = draw_texture_normalized_crop_rect[textureUnit].z;
+ float texCropH = draw_texture_normalized_crop_rect[textureUnit].w;
+
+ return vec4(texCropU, texCropV, 0.0, 0.0) +
+ drawTextureVertices[vertexId] *
+ vec4(texCropW, texCropH, 0.0, 0.0);
+}
+
+vec4 calcWorldPosition(vec4 posInput)
+{
+ return modelview * posInput;
+}
+
+vec4 calcNdcFromWorldPosition(vec4 worldPos)
+{
+ return projection * worldPos;
+}
+
+float calcPointSize(vec4 ndcPos)
+{
+ float dist = length(ndcPos.z);
+ float attConst = point_distance_attenuation[0];
+ float attLinear = point_distance_attenuation[1];
+ float attQuad = point_distance_attenuation[2];
+ float attPart = attConst + attLinear * dist + attQuad * dist * dist;
+ float attPointSize = pointsize / pow(attPart, 0.5);
+
+ return clamp(attPointSize, point_size_min, point_size_max);
+}
+
+vec3 calcNormal(vec3 normalInput)
+{
+ mat3 mvInvTr3 = mat3(modelview_invtr);
+ vec3 result = mvInvTr3 * normalInput;
+
+ if (enable_rescale_normal)
+ {
+ float rescale = 1.0;
+ vec3 rescaleVec = vec3(mvInvTr3[2]);
+ float len = length(rescaleVec);
+ if (len > 0.0)
+ {
+ rescale = 1.0 / len;
+ }
+ result *= rescale;
+ }
+
+ if (enable_normalize)
+ {
+ result = normalize(result);
+ }
+
+ return result;
+}
+
+void main()
+{
+ if (enable_draw_texture)
+ {
+ int vertexId = gl_VertexID;
+ vec4 posDrawTexture = drawTexturePosition(vertexId);
+
+ gl_Position = posDrawTexture;
+ pos_varying = posDrawTexture;
+
+ normal_varying = normal;
+
+ gl_PointSize = pointsize;
+
+ texcoord0_varying = drawTextureTexCoord(vertexId, 0);
+ texcoord1_varying = drawTextureTexCoord(vertexId, 1);
+ texcoord2_varying = drawTextureTexCoord(vertexId, 2);
+ texcoord3_varying = drawTextureTexCoord(vertexId, 3);
+ }
+ else
+ {
+ vec4 worldPos = calcWorldPosition(pos);
+ vec4 ndcPos = calcNdcFromWorldPosition(worldPos);
+
+ gl_Position = ndcPos;
+ pos_varying = worldPos;
+
+ normal_varying = calcNormal(normal);
+
+ // Avoid calculating point size stuff
+ // if we are not rendering points.
+ if (point_rasterization)
+ {
+ gl_PointSize = calcPointSize(ndcPos);
+ }
+ else
+ {
+ gl_PointSize = pointsize;
+ }
+
+ texcoord0_varying = texture_matrix[0] * texcoord0;
+ texcoord1_varying = texture_matrix[1] * texcoord1;
+ texcoord2_varying = texture_matrix[2] * texcoord2;
+ texcoord3_varying = texture_matrix[3] * texcoord3;
+ }
+
+ vec4 vertex_color = color;
+
+ if (enable_lighting)
+ {
+ vertex_color = doLighting(color);
+ }
+
+ vertex_color = clamp(vertex_color, vec4(0), vec4(1));
+
+ color_varying = vertex_color;
+ color_varying_flat = vertex_color;
+}
+)";
+
+constexpr char kGLES1DrawFShaderVersion[] = R"(#version 300 es
+)";
+
+constexpr char kGLES1DrawFShaderHeader[] = R"(precision highp float;
+
+// Defines for GL constants
+#define kMaxTexUnits 4
+#define kMaxClipPlanes 6
+
+#define kModulate 0x2100
+#define kDecal 0x2101
+#define kCombine 0x8570
+#define kReplace 0x1E01
+#define kBlend 0x0BE2
+#define kAdd 0x0104
+
+#define kAddSigned 0x8574
+#define kInterpolate 0x8575
+#define kSubtract 0x84E7
+#define kDot3Rgb 0x86AE
+#define kDot3Rgba 0x86AF
+
+#define kAlpha 0x1906
+#define kRGB 0x1907
+#define kRGBA 0x1908
+#define kLuminance 0x1909
+#define kLuminanceAlpha 0x190A
+
+#define kTexture 0x1702
+#define kConstant 0x8576
+#define kPrimaryColor 0x8577
+#define kPrevious 0x8578
+
+#define kSrcColor 0x0300
+#define kOneMinusSrcColor 0x0301
+#define kSrcAlpha 0x0302
+#define kOneMinusSrcAlpha 0x0303
+
+#define kLinear 0x2601
+#define kExp 0x0800
+#define kExp2 0x0801
+
+#define kNever 0x0200
+#define kLess 0x0201
+#define kEqual 0x0202
+#define kLequal 0x0203
+#define kGreater 0x0204
+#define kNotequal 0x0205
+#define kGequal 0x0206
+#define kAlways 0x0207
+#define kZero 0x0
+#define kOne 0x1
+
+#define kAnd 0u
+#define kAndInverted 1u
+#define kAndReverse 2u
+#define kClear 3u
+#define kCopy 4u
+#define kCopyInverted 5u
+#define kEquiv 6u
+#define kInvert 7u
+#define kNand 8u
+#define kNoop 9u
+#define kNor 10u
+#define kOr 11u
+#define kOrInverted 12u
+#define kOrReverse 13u
+#define kSet 14u
+#define kXor 15u
+)";
+
+constexpr char kGLES1DrawFShaderUniformDefs[] = R"(
+
+// Texture units ///////////////////////////////////////////////////////////////
+
+// These are not arrays because hw support for arrays
+// of samplers is rather lacking.
+
+uniform sampler2D tex_sampler0;
+uniform samplerCube tex_cube_sampler0;
+
+uniform sampler2D tex_sampler1;
+uniform samplerCube tex_cube_sampler1;
+
+uniform sampler2D tex_sampler2;
+uniform samplerCube tex_cube_sampler2;
+
+uniform sampler2D tex_sampler3;
+uniform samplerCube tex_cube_sampler3;
+
+uniform vec4 texture_env_color[kMaxTexUnits];
+uniform float texture_env_rgb_scale[kMaxTexUnits];
+uniform float texture_env_alpha_scale[kMaxTexUnits];
+
+// Vertex attributes////////////////////////////////////////////////////////////
+
+in vec4 pos_varying;
+in vec3 normal_varying;
+in vec4 color_varying;
+flat in vec4 color_varying_flat;
+in vec4 texcoord0_varying;
+in vec4 texcoord1_varying;
+in vec4 texcoord2_varying;
+in vec4 texcoord3_varying;
+
+// Alpha test///////////////////////////////////////////////////////////////////
+
+uniform float alpha_test_ref;
+
+// Fog /////////////////////////////////////////////////////////////////////////
+
+uniform float fog_density;
+uniform float fog_start;
+uniform float fog_end;
+uniform vec4 fog_color;
+
+// User clip plane /////////////////////////////////////////////////////////////
+
+uniform vec4 clip_planes[kMaxClipPlanes];
+
+// Logic Op ////////////////////////////////////////////////////////////////////
+
+// Format is:
+// - 4x4 bits depicting the bit width of each channel of color output
+// - 4 bits for the op based on LogicalOperation's packing
+uniform highp uint logic_op;
+
+// Point rasterization//////////////////////////////////////////////////////////
+
+// GL_OES_draw_texture//////////////////////////////////////////////////////////
+)";
+
+constexpr char kGLES1DrawFShaderOutputDef[] = R"(
+out vec4 frag_color;
+)";
+
+constexpr char kGLES1DrawFShaderFramebufferFetchOutputDef[] = R"(
+inout vec4 frag_color;
+)";
+
+constexpr char kGLES1DrawFShaderFramebufferFetchNonCoherentOutputDef[] = R"(
+layout(noncoherent) inout vec4 frag_color;
+)";
+
+constexpr char kGLES1DrawFShaderFunctions[] = R"(
+
+bool doAlphaTest(vec4 currentFragment)
+{
+ bool shouldPassAlpha = false;
+ float incAlpha = currentFragment.a;
+
+ switch (alpha_func)
+ {
+ case kNever:
+ shouldPassAlpha = false;
+ break;
+ case kLess:
+ shouldPassAlpha = incAlpha < alpha_test_ref;
+ break;
+ case kLequal:
+ shouldPassAlpha = incAlpha <= alpha_test_ref;
+ break;
+ case kEqual:
+ shouldPassAlpha = incAlpha == alpha_test_ref;
+ break;
+ case kGequal:
+ shouldPassAlpha = incAlpha >= alpha_test_ref;
+ break;
+ case kGreater:
+ shouldPassAlpha = incAlpha > alpha_test_ref;
+ break;
+ case kNotequal:
+ shouldPassAlpha = incAlpha != alpha_test_ref;
+ break;
+ case kAlways:
+ default:
+ shouldPassAlpha = true;
+ break;
+ }
+
+ return shouldPassAlpha;
+}
+
+bool doClipPlaneTest()
+{
+ bool res = true;
+
+ for (int i = 0; i < kMaxClipPlanes; i++)
+ {
+ if (clip_plane_enables[i])
+ {
+ float dist = dot(clip_planes[i].xyz, pos_varying.xyz) + clip_planes[i].w * pos_varying.w;
+ res = res && (dist >= 0.0);
+ }
+ }
+
+ return res;
+}
+
+vec4 doFog(vec4 currentFragment)
+{
+
+ float eyeDist = -pos_varying.z / pos_varying.w;
+ float f = 1.0;
+ switch (fog_mode)
+ {
+ case kExp:
+ f = exp(-fog_density * eyeDist);
+ break;
+ case kExp2:
+ f = exp(-(pow(fog_density * eyeDist, 2.0)));
+ break;
+ case kLinear:
+ f = (fog_end - eyeDist) / (fog_end - fog_start);
+ break;
+ default:
+ break;
+ }
+
+ f = clamp(f, 0.0, 1.0);
+ vec4 result = vec4(f * currentFragment.rgb + (1.0 - f) * fog_color.rgb, currentFragment.a);
+ return result;
+}
+)";
+
+constexpr char kGLES1DrawFShaderLogicOpFramebufferFetchDisabled[] = R"(
+vec4 applyLogicOp(vec4 currentFragment)
+{
+ return currentFragment;
+}
+)";
+
+// applyLogicOp takes logic-op information from a packed uniform and applies it to the color
+// attachment using framebuffer fetch. See the description of logic_op above for the format of the
+// uniform.
+//
+// In particular, 4 bits in logic_op (at offset 16) contain the packed logical operation (of
+// LogicalOperation type). Based on the selected operation, the formula specified in the spec is
+// applied (applied as bitwise operations on unorm values).
+constexpr char kGLES1DrawFShaderLogicOpFramebufferFetchEnabled[] = R"(
+vec4 applyLogicOp(vec4 currentFragment)
+{
+ vec4 previousFragment = frag_color;
+
+ mediump uvec4 channelWidths = uvec4(logic_op & 0xFu,
+ logic_op >> 4u & 0xFu,
+ logic_op >> 8u & 0xFu,
+ logic_op >> 12u & 0xFu);
+
+ mediump uvec4 channelMasks = (uvec4(1) << channelWidths) - 1u;
+
+ mediump uvec4 src = uvec4(round(currentFragment * vec4(channelMasks)));
+ mediump uvec4 dst = uvec4(round(previousFragment * vec4(channelMasks)));
+ mediump uvec4 result;
+
+ switch (logic_op >> 16u & 0xFu)
+ {
+ case kAnd:
+ result = src & dst;
+ break;
+ case kAndInverted:
+ result = ~src & dst;
+ break;
+ case kAndReverse:
+ result = src & ~dst;
+ break;
+ case kClear:
+ result = uvec4(0);
+ break;
+ case kCopy:
+ result = src;
+ break;
+ case kCopyInverted:
+ result = ~src;
+ break;
+ case kEquiv:
+ result = ~(src ^ dst);
+ break;
+ case kInvert:
+ result = ~dst;
+ break;
+ case kNand:
+ result = ~(src & dst);
+ break;
+ case kNoop:
+ result = dst;
+ break;
+ case kNor:
+ result = ~(src | dst);
+ break;
+ case kOr:
+ result = src | dst;
+ break;
+ case kOrInverted:
+ result = ~src | dst;
+ break;
+ case kOrReverse:
+ result = src | ~dst;
+ break;
+ case kSet:
+ result = channelMasks;
+ break;
+ case kXor:
+ result = src ^ dst;
+ break;
+ }
+
+ result &= channelMasks;
+
+ // Avoid division by zero for formats without alpha
+ channelMasks.a = max(channelMasks.a, 1u);
+
+ return vec4(result) / vec4(channelMasks);
+}
+)";
+
+constexpr char kGLES1DrawFShaderMultitexturing[] = R"(
+
+bool isTextureUnitEnabled(int unit)
+{
+ return enable_texture_2d[unit] || enable_texture_cube_map[unit];
+}
+
+vec4 getTextureColor(int unit)
+{
+ vec4 res;
+
+ switch (unit)
+ {
+ case 0:
+ if (enable_texture_2d[0])
+ {
+ res = texture(tex_sampler0, texcoord0_varying.xy);
+ }
+ else if (enable_texture_cube_map[0])
+ {
+ res = texture(tex_cube_sampler0, texcoord0_varying.xyz);
+ }
+ break;
+ case 1:
+ if (enable_texture_2d[1])
+ {
+ res = texture(tex_sampler1, texcoord1_varying.xy);
+ }
+ else if (enable_texture_cube_map[1])
+ {
+ res = texture(tex_cube_sampler1, texcoord1_varying.xyz);
+ }
+ break;
+ case 2:
+ if (enable_texture_2d[2])
+ {
+ res = texture(tex_sampler2, texcoord2_varying.xy);
+ }
+ else if (enable_texture_cube_map[2])
+ {
+ res = texture(tex_cube_sampler2, texcoord2_varying.xyz);
+ }
+ break;
+ case 3:
+ if (enable_texture_2d[3])
+ {
+ res = texture(tex_sampler3, texcoord3_varying.xy);
+ }
+ else if (enable_texture_cube_map[3])
+ {
+ // TODO: Weird stuff happens
+ // res = texture(tex_cube_sampler3, texcoord3_varying.xyz);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return res;
+}
+
+vec4 getPointSpriteTextureColor(int unit)
+{
+ vec4 res;
+
+ switch (unit)
+ {
+ case 0:
+ if (enable_texture_2d[0])
+ {
+ res = texture(tex_sampler0, gl_PointCoord.xy);
+ }
+ break;
+ case 1:
+ if (enable_texture_2d[1])
+ {
+ res = texture(tex_sampler1, gl_PointCoord.xy);
+ }
+ break;
+ case 2:
+ if (enable_texture_2d[2])
+ {
+ res = texture(tex_sampler2, gl_PointCoord.xy);
+ }
+ break;
+ case 3:
+ if (enable_texture_2d[3])
+ {
+ res = texture(tex_sampler3, gl_PointCoord.xy);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return res;
+}
+
+vec3 textureCombineSrcnOpnRgb(int srcnRgb,
+ int opnRgb,
+ vec4 textureEnvColor,
+ vec4 vertexColor,
+ vec4 texturePrevColor,
+ vec4 textureColor)
+{
+ vec3 res;
+ vec4 op;
+
+ switch (srcnRgb)
+ {
+ case kTexture:
+ op = textureColor;
+ break;
+ case kConstant:
+ op = textureEnvColor;
+ break;
+ case kPrimaryColor:
+ op = vertexColor;
+ break;
+ case kPrevious:
+ op = texturePrevColor;
+ break;
+ default:
+ op = texturePrevColor;
+ break;
+ }
+
+ switch (opnRgb)
+ {
+ case kSrcColor:
+ res = op.rgb;
+ break;
+ case kOneMinusSrcColor:
+ res = 1.0 - op.rgb;
+ break;
+ case kSrcAlpha:
+ res = vec3(op.a, op.a, op.a);
+ break;
+ case kOneMinusSrcAlpha:
+ res = vec3(1.0 - op.a, 1.0 - op.a, 1.0 - op.a);
+ break;
+ default:
+ break;
+ }
+
+ return res;
+}
+
+float textureCombineSrcnOpnAlpha(int srcn,
+ int opn,
+ vec4 textureEnvColor,
+ vec4 vertexColor,
+ vec4 texturePrevColor,
+ vec4 textureColor)
+{
+ float res;
+ vec4 op;
+
+ switch (srcn)
+ {
+ case kTexture:
+ op = textureColor;
+ break;
+ case kConstant:
+ op = textureEnvColor;
+ break;
+ case kPrimaryColor:
+ op = vertexColor;
+ break;
+ case kPrevious:
+ op = texturePrevColor;
+ break;
+ default:
+ op = texturePrevColor;
+ break;
+ }
+
+ switch (opn)
+ {
+ case kSrcAlpha:
+ res = op.a;
+ break;
+ case kOneMinusSrcAlpha:
+ res = 1.0 - op.a;
+ break;
+ default:
+ break;
+ }
+
+ return res;
+}
+
+vec4 textureCombine(int combineRgb,
+ int combineAlpha,
+ int src0Rgb,
+ int src0Alpha,
+ int src1Rgb,
+ int src1Alpha,
+ int src2Rgb,
+ int src2Alpha,
+ int op0Rgb,
+ int op0Alpha,
+ int op1Rgb,
+ int op1Alpha,
+ int op2Rgb,
+ int op2Alpha,
+ vec4 textureEnvColor,
+ float rgbScale,
+ float alphaScale,
+ vec4 vertexColor,
+ vec4 texturePrevColor,
+ vec4 textureColor)
+{
+
+ vec3 resRgb;
+ float resAlpha;
+
+ vec3 arg0Rgb;
+ float arg0Alpha;
+ vec3 arg1Rgb;
+ float arg1Alpha;
+ vec3 arg2Rgb;
+ float arg2Alpha;
+ float dotVal;
+
+ arg0Rgb = textureCombineSrcnOpnRgb(src0Rgb, op0Rgb, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+ arg0Alpha = textureCombineSrcnOpnAlpha(src0Alpha, op0Alpha, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+
+ if (combineRgb != kReplace)
+ {
+ arg1Rgb = textureCombineSrcnOpnRgb(src1Rgb, op1Rgb, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+ }
+
+ if (combineAlpha != kReplace)
+ {
+ arg1Alpha = textureCombineSrcnOpnAlpha(src1Alpha, op1Alpha, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+ }
+
+ if (combineRgb == kInterpolate)
+ {
+ arg2Rgb = textureCombineSrcnOpnRgb(src2Rgb, op2Rgb, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+ }
+
+ if (combineAlpha == kInterpolate)
+ {
+ arg2Alpha = textureCombineSrcnOpnAlpha(src2Alpha, op2Alpha, textureEnvColor, vertexColor,
+ texturePrevColor, textureColor);
+ }
+
+ switch (combineRgb)
+ {
+ case kReplace:
+ resRgb = arg0Rgb;
+ break;
+ case kModulate:
+ resRgb = arg0Rgb * arg1Rgb;
+ break;
+ case kAdd:
+ resRgb = arg0Rgb + arg1Rgb;
+ break;
+ case kAddSigned:
+ resRgb = arg0Rgb + arg1Rgb - 0.5;
+ break;
+ case kInterpolate:
+ resRgb = arg0Rgb * arg2Rgb + arg1Rgb * (1.0 - arg2Rgb);
+ break;
+ case kSubtract:
+ resRgb = arg0Rgb - arg1Rgb;
+ break;
+ default:
+ break;
+ }
+
+ switch (combineAlpha)
+ {
+ case kReplace:
+ resAlpha = arg0Alpha;
+ break;
+ case kModulate:
+ resAlpha = arg0Alpha * arg1Alpha;
+ break;
+ case kAdd:
+ resAlpha = arg0Alpha + arg1Alpha;
+ break;
+ case kAddSigned:
+ resAlpha = arg0Alpha + arg1Alpha - 0.5;
+ break;
+ case kInterpolate:
+ resAlpha = arg0Alpha * arg2Alpha + arg1Alpha * (1.0 - arg2Alpha);
+ break;
+ case kSubtract:
+ resAlpha = arg0Alpha - arg1Alpha;
+ break;
+ default:
+ break;
+ }
+
+ if (combineRgb == kDot3Rgb || combineRgb == kDot3Rgba)
+ {
+ dotVal = 4.0 * dot(arg0Rgb - 0.5, arg1Rgb - 0.5);
+
+ if (combineRgb == kDot3Rgb)
+ {
+ return vec4(dotVal, dotVal, dotVal, resAlpha);
+ }
+ else
+ {
+ return vec4(dotVal, dotVal, dotVal, dotVal);
+ }
+ }
+ else
+ {
+ return vec4(resRgb, resAlpha);
+ }
+}
+
+vec4 textureFunction(int unit,
+ int texFormat,
+ int envMode,
+ int combineRgb,
+ int combineAlpha,
+ int src0Rgb,
+ int src0Alpha,
+ int src1Rgb,
+ int src1Alpha,
+ int src2Rgb,
+ int src2Alpha,
+ int op0Rgb,
+ int op0Alpha,
+ int op1Rgb,
+ int op1Alpha,
+ int op2Rgb,
+ int op2Alpha,
+ vec4 textureEnvColor,
+ float rgbScale,
+ float alphaScale,
+ vec4 vertexColor,
+ vec4 texturePrevColor,
+ vec4 textureColor)
+{
+
+ if (!isTextureUnitEnabled(unit))
+ {
+ return texturePrevColor;
+ }
+
+ vec4 res;
+
+ switch (envMode)
+ {
+ case kReplace:
+ switch (texFormat)
+ {
+ case kAlpha:
+ res.rgb = texturePrevColor.rgb;
+ res.a = textureColor.a;
+ break;
+ case kRGBA:
+ case kLuminanceAlpha:
+ res.rgba = textureColor.rgba;
+ break;
+ case kRGB:
+ case kLuminance:
+ default:
+ res.rgb = textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ }
+ break;
+ case kModulate:
+ switch (texFormat)
+ {
+ case kAlpha:
+ res.rgb = texturePrevColor.rgb;
+ res.a = texturePrevColor.a * textureColor.a;
+ break;
+ case kRGBA:
+ case kLuminanceAlpha:
+ res.rgba = texturePrevColor.rgba * textureColor.rgba;
+ break;
+ case kRGB:
+ case kLuminance:
+ default:
+ res.rgb = texturePrevColor.rgb * textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ }
+ break;
+ case kDecal:
+ switch (texFormat)
+ {
+ case kRGB:
+ res.rgb = textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ case kRGBA:
+ res.rgb = texturePrevColor.rgb * (1.0 - textureColor.a) +
+ textureColor.rgb * textureColor.a;
+ res.a = texturePrevColor.a;
+ break;
+ case kAlpha:
+ case kLuminance:
+ case kLuminanceAlpha:
+ default:
+ res.rgb = texturePrevColor.rgb * textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ }
+ break;
+ case kBlend:
+ switch (texFormat)
+ {
+ case kAlpha:
+ res.rgb = texturePrevColor.rgb;
+ res.a = textureColor.a * texturePrevColor.a;
+ break;
+ case kLuminance:
+ case kRGB:
+ res.rgb = texturePrevColor.rgb * (1.0 - textureColor.rgb) +
+ textureEnvColor.rgb * textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ case kLuminanceAlpha:
+ case kRGBA:
+ default:
+ res.rgb = texturePrevColor.rgb * (1.0 - textureColor.rgb) +
+ textureEnvColor.rgb * textureColor.rgb;
+ res.a = textureColor.a * texturePrevColor.a;
+ break;
+ }
+ break;
+ case kAdd:
+ switch (texFormat)
+ {
+ case kAlpha:
+ res.rgb = texturePrevColor.rgb;
+ res.a = textureColor.a * texturePrevColor.a;
+ break;
+ case kLuminance:
+ case kRGB:
+ res.rgb = texturePrevColor.rgb + textureColor.rgb;
+ res.a = texturePrevColor.a;
+ break;
+ case kLuminanceAlpha:
+ case kRGBA:
+ default:
+ res.rgb = texturePrevColor.rgb + textureColor.rgb;
+ res.a = textureColor.a * texturePrevColor.a;
+ break;
+ }
+ break;
+ case kCombine:
+ res = textureCombine(combineRgb, combineAlpha, src0Rgb, src0Alpha, src1Rgb, src1Alpha,
+ src2Rgb, src2Alpha, op0Rgb, op0Alpha, op1Rgb, op1Alpha, op2Rgb,
+ op2Alpha, textureEnvColor, rgbScale, alphaScale, vertexColor,
+ texturePrevColor, textureColor);
+ res.rgb *= rgbScale;
+ res.a *= alphaScale;
+ break;
+ default:
+ break;
+ }
+
+ return clamp(res, 0.0, 1.0);
+}
+)";
+
+constexpr char kGLES1DrawFShaderMain[] = R"(
+void main()
+{
+ if (enable_clip_planes && !enable_draw_texture)
+ {
+ if (!doClipPlaneTest())
+ {
+ discard;
+ }
+ }
+
+ vec4 vertex_color;
+
+ if (shade_model_flat)
+ {
+ vertex_color = color_varying_flat;
+ }
+ else
+ {
+ vertex_color = color_varying;
+ }
+
+ vec4 currentFragment = vertex_color;
+
+ vec4 texturePrevColor = currentFragment;
+
+ for (int i = 0; i < kMaxTexUnits; i++)
+ {
+ vec4 textureColor;
+
+ if (point_rasterization && point_sprite_enabled &&
+ point_sprite_coord_replace[i]) {
+ textureColor = getPointSpriteTextureColor(i);
+ } else {
+ textureColor = getTextureColor(i);
+ }
+
+ currentFragment = textureFunction(
+ i, texture_format[i], texture_env_mode[i], combine_rgb[i], combine_alpha[i],
+ src0_rgb[i], src0_alpha[i], src1_rgb[i], src1_alpha[i], src2_rgb[i], src2_alpha[i],
+ op0_rgb[i], op0_alpha[i], op1_rgb[i], op1_alpha[i], op2_rgb[i], op2_alpha[i],
+ texture_env_color[i], texture_env_rgb_scale[i], texture_env_alpha_scale[i],
+ vertex_color, texturePrevColor, textureColor);
+
+ texturePrevColor = currentFragment;
+ }
+
+ if (enable_fog)
+ {
+ currentFragment = doFog(currentFragment);
+ }
+
+ if (enable_alpha_test && !doAlphaTest(currentFragment))
+ {
+ discard;
+ }
+
+ frag_color = applyLogicOp(currentFragment);
+}
+)";
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-02 11:38:03 +0000