Trying something crazy --- maybe
Allen Webster
parent
ac0bd78485
commit
99dc2fc570
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@ -57,7 +57,7 @@ internal void
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#ifdef OS_LINUX
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gl__error_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const char *message, const void *userParam){
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#else
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gl__error_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, char *message, void *userParam){
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gl__error_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, char *message, void *userParam){
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#endif
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switch (id){
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case 131218:
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@ -70,85 +70,85 @@ gl__error_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsiz
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InvalidPath;
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}break;
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}
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}
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}
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char *gl__header = R"foo(#version 150
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)foo";
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char *gl__header = R"foo(#version 130
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)foo";
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char *gl__vertex = R"foo(
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uniform vec2 view_t;
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uniform mat2x2 view_m;
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in vec2 vertex_p;
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in vec3 vertex_t;
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in uint vertex_c;
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in float vertex_ht;
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smooth out vec4 fragment_color;
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smooth out vec3 uvw;
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smooth out vec2 xy;
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smooth out vec2 adjusted_half_dim;
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smooth out float half_thickness;
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void main(void)
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{
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gl_Position = vec4(view_m*(vertex_p - view_t), 0.0, 1.0);
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char *gl__vertex = R"foo(
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uniform vec2 view_t;
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uniform mat2x2 view_m;
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in vec2 vertex_p;
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in vec3 vertex_t;
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in uint vertex_c;
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in float vertex_ht;
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smooth out vec4 fragment_color;
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smooth out vec3 uvw;
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smooth out vec2 xy;
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smooth out vec2 adjusted_half_dim;
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smooth out float half_thickness;
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void main(void)
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{
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gl_Position = vec4(view_m*(vertex_p - view_t), 0.0, 1.0);
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fragment_color.b = (float((vertex_c )&0xFFu))/255.0;
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fragment_color.g = (float((vertex_c>> 8u)&0xFFu))/255.0;
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fragment_color.r = (float((vertex_c>>16u)&0xFFu))/255.0;
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fragment_color.a = (float((vertex_c>>24u)&0xFFu))/255.0;
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uvw = vertex_t;
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vec2 center = vertex_t.xy;
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vec2 half_dim = abs(vertex_p - center);
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adjusted_half_dim = half_dim - vertex_t.zz + vec2(0.5, 0.5);
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half_thickness = vertex_ht;
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xy = vertex_p;
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}
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)foo";
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fragment_color.g = (float((vertex_c>> 8u)&0xFFu))/255.0;
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fragment_color.r = (float((vertex_c>>16u)&0xFFu))/255.0;
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fragment_color.a = (float((vertex_c>>24u)&0xFFu))/255.0;
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uvw = vertex_t;
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vec2 center = vertex_t.xy;
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vec2 half_dim = abs(vertex_p - center);
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adjusted_half_dim = half_dim - vertex_t.zz + vec2(0.5, 0.5);
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half_thickness = vertex_ht;
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xy = vertex_p;
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}
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)foo";
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char *gl__fragment = R"foo(
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smooth in vec4 fragment_color;
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smooth in vec3 uvw;
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smooth in vec2 xy;
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smooth in vec2 adjusted_half_dim;
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smooth in float half_thickness;
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uniform sampler2DArray sampler;
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out vec4 out_color;
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char *gl__fragment = R"foo(
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smooth in vec4 fragment_color;
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smooth in vec3 uvw;
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smooth in vec2 xy;
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smooth in vec2 adjusted_half_dim;
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smooth in float half_thickness;
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uniform sampler2DArray sampler;
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out vec4 out_color;
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float rectangle_sd(vec2 p, vec2 b){
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vec2 d = abs(p) - b;
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return(length(max(d, vec2(0.0, 0.0))) + min(max(d.x, d.y), 0.0));
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}
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float rectangle_sd(vec2 p, vec2 b){
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vec2 d = abs(p) - b;
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return(length(max(d, vec2(0.0, 0.0))) + min(max(d.x, d.y), 0.0));
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}
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void main(void)
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{
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float has_thickness = (step(0.49, half_thickness));
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float does_not_have_thickness = 1.0 - has_thickness;
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void main(void)
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{
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float has_thickness = (step(0.49, half_thickness));
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float does_not_have_thickness = 1.0 - has_thickness;
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float sample_value = texture(sampler, uvw).r;
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sample_value *= does_not_have_thickness;
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float sample_value = texture(sampler, uvw).r;
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sample_value *= does_not_have_thickness;
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vec2 center = uvw.xy;
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float roundness = uvw.z;
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float sd = rectangle_sd(xy - center, adjusted_half_dim);
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sd = sd - roundness;
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sd = abs(sd + half_thickness) - half_thickness;
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float shape_value = 1.0 - smoothstep(-1.0, 0.0, sd);
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shape_value *= has_thickness;
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vec2 center = uvw.xy;
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float roundness = uvw.z;
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float sd = rectangle_sd(xy - center, adjusted_half_dim);
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sd = sd - roundness;
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sd = abs(sd + half_thickness) - half_thickness;
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float shape_value = 1.0 - smoothstep(-1.0, 0.0, sd);
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shape_value *= has_thickness;
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out_color = vec4(fragment_color.xyz, fragment_color.a*(sample_value + shape_value));
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}
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)foo";
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out_color = vec4(fragment_color.xyz, fragment_color.a*(sample_value + shape_value));
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}
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)foo";
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#define AttributeList(X) \
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X(vertex_p) \
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X(vertex_t) \
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X(vertex_c) \
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X(vertex_ht)
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X(vertex_p) \
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X(vertex_t) \
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X(vertex_c) \
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X(vertex_ht)
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#define UniformList(X) \
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X(view_t) \
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X(view_m) \
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X(sampler)
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X(view_t) \
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X(view_m) \
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X(sampler)
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struct GL_Program{
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struct GL_Program{
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u32 program;
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#define GetAttributeLocation(N) i32 N;
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AttributeList(GetAttributeLocation)
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@ -156,10 +156,10 @@ struct GL_Program{
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#define GetUniformLocation(N) i32 N;
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UniformList(GetUniformLocation)
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#undef GetUniformLocation
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};
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};
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internal GL_Program
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gl__make_program(char *header, char *vertex, char *fragment){
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internal GL_Program
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gl__make_program(char *header, char *vertex, char *fragment){
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if (header == 0){
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header = "";
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}
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@ -208,13 +208,13 @@ gl__make_program(char *header, char *vertex, char *fragment){
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UniformList(GetUniformLocation)
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#undef GetUniformLocation
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return(result);
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}
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}
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#define GLOffsetStruct(p,m) ((void*)(OffsetOfMemberStruct(p,m)))
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#define GLOffset(S,m) ((void*)(OffsetOfMember(S,m)))
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internal void
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gl_render(Render_Target *t){
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internal void
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gl_render(Render_Target *t){
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Font_Set *font_set = (Font_Set*)t->font_set;
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local_persist b32 first_opengl_call = true;
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@ -354,7 +354,8 @@ gl_render(Render_Target *t){
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}
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glFlush();
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}
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}
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// BOTTOM
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// BOTTOM
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