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added color quad and hue slider

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This commit is contained in:
omigamedev
2017-03-21 09:56:33 +00:00
parent 13fa84a02c
commit 03a5212e56
6 changed files with 202 additions and 28 deletions
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46
engine/app.cpp
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@@ -89,6 +89,48 @@ void App::initShaders()
"void main(){"
" frag = col;"
"}";
static const char* shader_color_quad_v =
SHADER_VERSION
"uniform mat4 mvp;"
"in vec4 pos;"
"in vec2 uvs;"
"out vec3 uv;"
"void main(){"
" gl_Position = mvp * pos;"
" uv = vec3(uvs, pos.w);"
"}";
static const char* shader_color_quad_f =
SHADER_VERSION
"uniform vec4 col;"
"in vec3 uv;"
"out vec4 frag;"
"void main(){"
" vec4 gradient_x = mix(col, vec4(1, 1, 1, 1), uv.x);"
" frag = mix(gradient_x, vec4(0, 0, 0, 1), uv.y);"
"}";
static const char* shader_color_hue_v =
SHADER_VERSION
"uniform mat4 mvp;"
"in vec4 pos;"
"in vec2 uvs;"
"out vec3 uv;"
"void main(){"
" gl_Position = mvp * pos;"
" uv = vec3(uvs, pos.w);"
"}";
static const char* shader_color_hue_f =
SHADER_VERSION
"uniform vec4 col;"
"in vec3 uv;"
"out vec4 frag;"
"vec3 hsv2rgb(vec3 c) {"
" vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);"
" vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);"
" return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);"
"}"
"void main(){"
" frag = vec4(hsv2rgb(vec3(uv.y, 1, 1)), 1);"
"}";
static const char* shader_font_v =
SHADER_VERSION
"uniform mat4 mvp;"
@@ -115,6 +157,10 @@ void App::initShaders()
LOG("Failed to create shader Texture");
if (!ShaderManager::create(kShader::Color, shader_color_v, shader_color_f))
LOG("Failed to create shader Color");
if (!ShaderManager::create(kShader::ColorQuad, shader_color_quad_v, shader_color_quad_f))
LOG("Failed to create shader ColorQuad");
if (!ShaderManager::create(kShader::ColorHue, shader_color_hue_v, shader_color_hue_f))
LOG("Failed to create shader ColorHue");
if (!ShaderManager::create(kShader::UVs, shader_v, shader_uv_f))
LOG("Failed to create shader UVs");
if (!ShaderManager::create(kShader::Font, shader_font_v, shader_font_f))