Long game play cause horizonal lines that widen engulfing screen

Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.

---- Minecraft Crash Report ----
// My bad.

Time: 2/9/14 11:07 AM
Description: Manually triggered debug crash

java.lang.Throwable
	at azi.p(SourceFile:1385)
	at azi.ah(SourceFile:760)
	at azi.f(SourceFile:711)
	at net.minecraft.client.main.Main.main(SourceFile:152)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at bka.a(SourceFile:289)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bkf['Barlock_James'/1243180, l='MpServer', x=-184.66, y=65.12, z=341.48]]
	Chunk stats: MultiplayerChunkCache: 600, 600
	Level seed: 0
	Level generator: ID 02 - largeBiomes, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-124,64,256), Chunk: (at 4,4,0 in -8,16; contains blocks -128,0,256 to -113,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 4070231 game time, 4073525 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 89 total; [wb['item.item.egg'/1242914, l='MpServer', x=-199.34, y=63.13, z=340.13], vg['Sheep'/1242915, l='MpServer', x=-200.73, y=63.00, z=357.98], ux['Chicken'/1242912, l='MpServer', x=-199.53, y=63.00, z=337.81], wb['item.item.egg'/1242913, l='MpServer', x=-197.19, y=63.13, z=338.94], ux['Chicken'/1242918, l='MpServer', x=-194.84, y=63.00, z=362.97], vg['Sheep'/1242919, l='MpServer', x=-194.53, y=63.00, z=361.01], vg['Sheep'/1242916, l='MpServer', x=-196.72, y=63.00, z=353.38], vg['Sheep'/1242917, l='MpServer', x=-196.50, y=63.00, z=352.16], vg['Sheep'/1242920, l='MpServer', x=-188.66, y=63.00, z=368.88], vg['Sheep'/1242921, l='MpServer', x=-194.31, y=63.00, z=362.13], uy['Cow'/1242935, l='MpServer', x=-182.31, y=63.00, z=347.47], uy['Cow'/1242939, l='MpServer', x=-188.28, y=63.00, z=345.59], uy['Cow'/1242938, l='MpServer', x=-179.59, y=63.00, z=345.25], ux['Chicken'/1242937, l='MpServer', x=-190.81, y=63.00, z=348.81], uy['Cow'/1242936, l='MpServer', x=-190.03, y=63.00, z=345.03], wb['item.item.egg'/1242943, l='MpServer', x=-191.25, y=63.13, z=351.25], uy['Cow'/1242942, l='MpServer', x=-186.09, y=63.00, z=344.16], uy['Cow'/1242941, l='MpServer', x=-184.28, y=63.00, z=343.50], ux['Chicken'/1242940, l='MpServer', x=-191.19, y=63.00, z=349.53], ux['Chicken'/1242880, l='MpServer', x=-223.56, y=62.44, z=373.56], uv['Bat'/1242882, l='MpServer', x=-231.28, y=26.01, z=420.50], uv['Bat'/1242891, l='MpServer', x=-199.38, y=61.32, z=302.47], vg['Sheep'/1243013, l='MpServer', x=-141.50, y=71.00, z=315.44], uv['Bat'/1242892, l='MpServer', x=-201.63, y=63.10, z=312.28], vg['Sheep'/1243012, l='MpServer', x=-128.34, y=70.00, z=299.19], vg['Sheep'/1243014, l='MpServer', x=-129.78, y=75.00, z=323.19], vj['Squid'/1242895, l='MpServer', x=-204.10, y=53.31, z=329.34], vj['Squid'/1242897, l='MpServer', x=-204.45, y=53.40, z=331.50], vj['Squid'/1242896, l='MpServer', x=-203.47, y=53.44, z=329.50], uv['Bat'/1242899, l='MpServer', x=-199.38, y=63.10, z=321.75], vj['Squid'/1242898, l='MpServer', x=-205.50, y=53.00, z=330.50], uv['Bat'/1242901, l='MpServer', x=-200.50, y=63.10, z=321.75], uv['Bat'/1242900, l='MpServer', x=-200.34, y=63.10, z=321.75], vg['Sheep'/1242903, l='MpServer', x=-199.53, y=63.00, z=344.16], uv['Bat'/1242902, l='MpServer', x=-199.72, y=61.10, z=320.00], vg['Sheep'/1243024, l='MpServer', x=-117.37, y=77.00, z=290.53], ux['Chicken'/1242905, l='MpServer', x=-196.53, y=63.00, z=341.41], vg['Sheep'/1243025, l='MpServer', x=-119.28, y=71.00, z=290.63], ux['Chicken'/1242904, l='MpServer', x=-196.47, y=63.00, z=337.81], vg['Sheep'/1243026, l='MpServer', x=-122.50, y=84.00, z=324.50], ux['Chicken'/1242907, l='MpServer', x=-199.47, y=63.00, z=343.19], vg['Sheep'/1242906, l='MpServer', x=-199.50, y=63.00, z=348.81], vg['Sheep'/1242909, l='MpServer', x=-196.78, y=63.00, z=349.78], vg['Sheep'/1242908, l='MpServer', x=-196.31, y=63.00, z=345.50], ux['Chicken'/1243030, l='MpServer', x=-118.81, y=72.00, z=396.72], ux['Chicken'/1242911, l='MpServer', x=-196.56, y=63.00, z=342.44], ux['Chicken'/1242910, l='MpServer', x=-200.13, y=63.00, z=338.53], vg['Sheep'/1242983, l='MpServer', x=-172.03, y=64.00, z=294.94], uv['Bat'/1242981, l='MpServer', x=-167.47, y=48.10, z=285.28], wb['item.item.egg'/1242864, l='MpServer', x=-228.81, y=61.13, z=378.09], vj['Squid'/1242865, l='MpServer', x=-227.97, y=61.00, z=382.63], ux['Chicken'/1242866, l='MpServer', x=-225.56, y=62.63, z=399.56], wd['entity.MinecartChest.name'/1242984, l='MpServer', x=-175.50, y=63.50, z=337.47], ux['Chicken'/1242863, l='MpServer', x=-228.53, y=61.95, z=382.47], uv['Bat'/1242859, l='MpServer', x=-236.03, y=31.00, z=338.19], bkf['Barlock_James'/1243180, l='MpServer', x=-184.66, y=65.12, z=341.48], uv['Bat'/1242858, l='MpServer', x=-231.50, y=26.10, z=337.78], uv['Bat'/1243002, l='MpServer', x=-159.25, y=15.10, z=417.25], uv['Bat'/1242848, l='MpServer', x=-254.75, y=13.10, z=359.47], ux['Chicken'/1243000, l='MpServer', x=-142.47, y=79.19, z=377.24], ux['Chicken'/1242846, l='MpServer', x=-244.75, y=62.34, z=336.13], vg['Sheep'/1242948, l='MpServer', x=-188.75, y=63.00, z=357.25], uv['Bat'/1242847, l='MpServer', x=-251.06, y=13.00, z=364.53], vg['Sheep'/1242949, l='MpServer', x=-190.91, y=63.00, z=356.50], vg['Sheep'/1242950, l='MpServer', x=-187.59, y=63.00, z=358.41], wb['item.item.egg'/1242845, l='MpServer', x=-243.13, y=62.13, z=336.28], vg['Sheep'/1242951, l='MpServer', x=-188.50, y=63.00, z=356.06], wb['item.item.egg'/1242944, l='MpServer', x=-188.94, y=63.13, z=348.81], ux['Chicken'/1242843, l='MpServer', x=-255.47, y=63.00, z=336.63], vg['Sheep'/1242945, l='MpServer', x=-190.84, y=63.00, z=350.94], vg['Sheep'/1242946, l='MpServer', x=-189.28, y=63.00, z=351.50], vg['Sheep'/1242947, l='MpServer', x=-184.28, y=63.00, z=355.50], wb['item.item.egg'/1242956, l='MpServer', x=-189.47, y=63.13, z=353.41], vg['Sheep'/1242957, l='MpServer', x=-187.28, y=63.00, z=361.34], ux['Chicken'/1242958, l='MpServer', x=-186.34, y=63.00, z=361.06], vg['Sheep'/1242959, l='MpServer', x=-193.44, y=63.00, z=360.25], vg['Sheep'/1242952, l='MpServer', x=-188.84, y=63.00, z=358.84], ux['Chicken'/1242953, l='MpServer', x=-191.19, y=63.00, z=353.53], vg['Sheep'/1242954, l='MpServer', x=-186.47, y=63.00, z=360.16], vg['Sheep'/1242955, l='MpServer', x=-190.84, y=63.00, z=352.56], ux['Chicken'/1242965, l='MpServer', x=-187.41, y=63.00, z=369.10], vg['Sheep'/1242964, l='MpServer', x=-186.47, y=63.00, z=368.22], ux['Chicken'/1242827, l='MpServer', x=-261.44, y=62.21, z=353.59], ux['Chicken'/1242961, l='MpServer', x=-190.47, y=63.00, z=353.88], ux['Chicken'/1242826, l='MpServer', x=-257.19, y=63.08, z=350.81], vg['Sheep'/1242960, l='MpServer', x=-189.75, y=63.00, z=352.94], vg['Sheep'/1242963, l='MpServer', x=-186.45, y=63.00, z=369.55], vg['Sheep'/1242962, l='MpServer', x=-187.28, y=63.00, z=362.50], ux['Chicken'/1242823, l='MpServer', x=-257.59, y=72.00, z=278.53]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bka.a(SourceFile:289)
	at azi.b(SourceFile:1952)
	at azi.f(SourceFile:720)
	at net.minecraft.client.main.Main.main(SourceFile:152)

-- System Details --
Details:
	Minecraft Version: 1.7.4
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 182542440 bytes (174 MB) / 560463872 bytes (534 MB) up to 954728448 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 28227 (1580712 bytes; 1 MB) allocated, 2 (112 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 102
	Launched Version: 1.7.4
	LWJGL: 2.9.1
	OpenGL: AMD Radeon HD 6700 Series GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 4134 (231504 bytes; 0 MB) allocated, 34 (1904 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)

OpenGL: AMD Radeon HD 6700 Series GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.

Ancient graphics driver. Install Catalyst 13.12 http://support.amd.com/en-us/download/desktop?os=Windows+7+-+64

... and remove the dust-bunnies from the cooling fins and fans of your graphics card ...