177 lines
6.4 KiB
Go
177 lines
6.4 KiB
Go
package rl
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const (
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// Texture parameters (equivalent to OpenGL defines)
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TextureWrapS = 0x2802 // GL_TEXTURE_WRAP_S
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TextureWrapT = 0x2803 // GL_TEXTURE_WRAP_T
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TextureMagFilter = 0x2800 // GL_TEXTURE_MAG_FILTER
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TextureMinFilter = 0x2801 // GL_TEXTURE_MIN_FILTER
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TextureFilterNearest = 0x2600 // GL_NEAREST
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TextureFilterLinear = 0x2601 // GL_LINEAR
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TextureFilterMipNearest = 0x2700 // GL_NEAREST_MIPMAP_NEAREST
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TextureFilterNearestMipLinear = 0x2702 // GL_NEAREST_MIPMAP_LINEAR
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TextureFilterLinearMipNearest = 0x2701 // GL_LINEAR_MIPMAP_NEAREST
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TextureFilterMipLinear = 0x2703 // GL_LINEAR_MIPMAP_LINEAR
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TextureFilterAnisotropic = 0x3000 // Anisotropic filter (custom identifier)
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TextureMipmapBiasRatio = 0x4000 // Texture mipmap bias, percentage ratio (custom identifier)
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TextureWrapRepeat = 0x2901 // GL_REPEAT
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TextureWrapClamp = 0x812F // GL_CLAMP_TO_EDGE
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TextureWrapMirrorRepeat = 0x8370 // GL_MIRRORED_REPEAT
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TextureWrapMirrorClamp = 0x8742 // GL_MIRROR_CLAMP_EXT
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// Matrix modes (equivalent to OpenGL)
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Modelview = 0x1700 // GL_MODELVIEW
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Projection = 0x1701 // GL_PROJECTION
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Texture = 0x1702 // GL_TEXTURE
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// Primitive assembly draw modes
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Lines = 0x0001 // GL_LINES
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Triangles = 0x0004 // GL_TRIANGLES
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Quads = 0x0007 // GL_QUADS
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// GL equivalent data types
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UnsignedByte = 0x1401 // GL_UNSIGNED_BYTE
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Float = 0x1406 // GL_FLOAT
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// Buffer usage hint
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StreamDraw = 0x88E0 // GL_STREAM_DRAW
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StreamRead = 0x88E1 // GL_STREAM_READ
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StreamCopy = 0x88E2 // GL_STREAM_COPY
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StaticDraw = 0x88E4 // GL_STATIC_DRAW
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StaticRead = 0x88E5 // GL_STATIC_READ
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StaticCopy = 0x88E6 // GL_STATIC_COPY
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DynamicDraw = 0x88E8 // GL_DYNAMIC_DRAW
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DynamicRead = 0x88E9 // GL_DYNAMIC_READ
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DynamicCopy = 0x88EA // GL_DYNAMIC_COPY
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// GL Shader type
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FragmentShader = 0x8B30 // GL_FRAGMENT_SHADER
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VertexShader = 0x8B31 // GL_VERTEX_SHADER
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ComputeShader = 0x91B9 // GL_COMPUTE_SHADER
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// GL blending factors
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Zero = 0 // GL_ZERO
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One = 1 // GL_ONE
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SrcColor = 0x0300 // GL_SRC_COLOR
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OneMinusSrcColor = 0x0301 // GL_ONE_MINUS_SRC_COLOR
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SrcAlpha = 0x0302 // GL_SRC_ALPHA
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OneMinusSrcAlpha = 0x0303 // GL_ONE_MINUS_SRC_ALPHA
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DstAlpha = 0x0304 // GL_DST_ALPHA
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OneMinusDstAlpha = 0x0305 // GL_ONE_MINUS_DST_ALPHA
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DstColor = 0x0306 // GL_DST_COLOR
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OneMinusDstColor = 0x0307 // GL_ONE_MINUS_DST_COLOR
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SrcAlphaSaturate = 0x0308 // GL_SRC_ALPHA_SATURATE
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ConstantColor = 0x8001 // GL_CONSTANT_COLOR
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OneMinusConstantColor = 0x8002 // GL_ONE_MINUS_CONSTANT_COLOR
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ConstantAlpha = 0x8003 // GL_CONSTANT_ALPHA
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OneMinusConstantAlpha = 0x8004 // GL_ONE_MINUS_CONSTANT_ALPHA
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// GL blending functions/equations
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FuncAdd = 0x8006 // GL_FUNC_ADD
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Min = 0x8007 // GL_MIN
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Max = 0x8008 // GL_MAX
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FuncSubtract = 0x800A // GL_FUNC_SUBTRACT
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FuncReverseSubtract = 0x800B // GL_FUNC_REVERSE_SUBTRACT
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BlendEquation = 0x8009 // GL_BLEND_EQUATION
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BlendEquationRgb = BlendEquation // GL_BLEND_EQUATION_RGB (Same as BLEND_EQUATION)
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BlendEquationAlpha = 0x883D // GL_BLEND_EQUATION_ALPHA
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BlendDstRgb = 0x80C8 // GL_BLEND_DST_RGB
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BlendSrcRgb = 0x80C9 // GL_BLEND_SRC_RGB
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BlendDstAlpha = 0x80CA // GL_BLEND_DST_ALPHA
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BlendSrcAlpha = 0x80CB // GL_BLEND_SRC_ALPHA
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BlendColor = 0x8005 // GL_BLEND_COLOR
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ReadFramebuffer = 0x8CA8 // GL_READ_FRAMEBUFFER
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DrawFramebuffer = 0x8CA9 // GL_DRAW_FRAMEBUFFER
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)
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// VertexBuffer - Dynamic vertex buffers (position + texcoords + colors + indices arrays)
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type VertexBuffer struct {
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ElementCount int32 // Number of elements in the buffer (QUADS)
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Vertices *float32 // Vertex position (XYZ - 3 components per vertex) (shader-location = 0)
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Texcoords *float32 // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1)
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Normals *float32 // Vertex normal (XYZ - 3 components per vertex) (shader-location = 2)
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Colors *uint8 // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3)
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Indices *uint32 // Vertex indices (in case vertex data comes indexed) (6 indices per quad)
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VaoId uint32 // OpenGL Vertex Array Object id
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VboId [5]uint32 // OpenGL Vertex Buffer Objects id (5 types of vertex data)
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}
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// DrawCall - Draw call type
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// NOTE: Only texture changes register a new draw, other state-change-related elements are not
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// used at this moment (vaoId, shaderId, matrices), raylib just forces a batch draw call if any
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// of those state-change happens (this is done in core module)
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type DrawCall struct {
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Mode int32
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VertexCount int32
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VertexAlignment int32
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TextureId uint32
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}
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// RenderBatch type
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type RenderBatch struct {
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BufferCount int32
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CurrentBuffer int32
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VertexBuffer *VertexBuffer
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Draws *DrawCall
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DrawCounter int32
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DurrentDepth float32
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}
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// OpenGL version
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const (
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Opengl11 int32 = 1
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Opengl21 int32 = 2
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Opengl33 int32 = 3
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Opengl43 int32 = 4
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OpenglEs20 int32 = 5
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)
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// GlVersion type
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type GlVersion = int32
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// Shader attribute data types
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const (
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ShaderAttribFloat int32 = 0
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ShaderAttribVec2 int32 = 1
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ShaderAttribVec3 int32 = 2
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ShaderAttribVec4 int32 = 3
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)
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// ShaderAttributeDataType type
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type ShaderAttributeDataType = int32
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// Framebuffer attachment type
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// NOTE: By default up to 8 color channels defined but it can be more
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const (
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AttachmentColorChannel0 int32 = 0
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AttachmentColorChannel1 int32 = 1
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AttachmentColorChannel2 int32 = 2
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AttachmentColorChannel3 int32 = 3
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AttachmentColorChannel4 int32 = 4
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AttachmentColorChannel5 int32 = 5
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AttachmentColorChannel6 int32 = 6
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AttachmentColorChannel7 int32 = 7
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AttachmentDepth int32 = 100
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AttachmentStencil int32 = 200
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)
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// FramebufferAttachType type
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type FramebufferAttachType = int32
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// Framebuffer texture attachment type
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const (
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AttachmentCubemapPositiveX int32 = 0
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AttachmentCubemapNegativeX int32 = 1
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AttachmentCubemapPositiveY int32 = 2
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AttachmentCubemapNegativeY int32 = 3
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AttachmentCubemapPositiveZ int32 = 4
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AttachmentCubemapNegativeZ int32 = 5
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AttachmentTexture2d int32 = 100
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AttachmentRenderbuffer int32 = 200
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)
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// FramebufferAttachTextureType type
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type FramebufferAttachTextureType = int32
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